diff options
Diffstat (limited to 'source/blender/blenkernel/intern/particle.c')
| -rw-r--r-- | source/blender/blenkernel/intern/particle.c | 7757 |
1 files changed, 4089 insertions, 3668 deletions
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c index 35869c44b87..9e121d279ba 100644 --- a/source/blender/blenkernel/intern/particle.c +++ b/source/blender/blenkernel/intern/particle.c @@ -21,7 +21,6 @@ * \ingroup bke */ - #include <stdlib.h> #include <math.h> #include <string.h> @@ -69,7 +68,7 @@ #include "BKE_library.h" #include "BKE_modifier.h" #include "BKE_mesh.h" -#include "BKE_cdderivedmesh.h" /* for weight_to_rgb() */ +#include "BKE_cdderivedmesh.h" /* for weight_to_rgb() */ #include "BKE_pointcache.h" #include "BKE_scene.h" #include "BKE_deform.h" @@ -88,46 +87,69 @@ float PSYS_FRAND_BASE[PSYS_FRAND_COUNT]; void psys_init_rng(void) { - RNG *rng = BLI_rng_new_srandom(5831); /* arbitrary */ - for (int i = 0; i < PSYS_FRAND_COUNT; ++i) { - PSYS_FRAND_BASE[i] = BLI_rng_get_float(rng); - PSYS_FRAND_SEED_OFFSET[i] = (unsigned int)BLI_rng_get_int(rng); - PSYS_FRAND_SEED_MULTIPLIER[i] = (unsigned int)BLI_rng_get_int(rng); - } - BLI_rng_free(rng); + RNG *rng = BLI_rng_new_srandom(5831); /* arbitrary */ + for (int i = 0; i < PSYS_FRAND_COUNT; ++i) { + PSYS_FRAND_BASE[i] = BLI_rng_get_float(rng); + PSYS_FRAND_SEED_OFFSET[i] = (unsigned int)BLI_rng_get_int(rng); + PSYS_FRAND_SEED_MULTIPLIER[i] = (unsigned int)BLI_rng_get_int(rng); + } + BLI_rng_free(rng); } -static void get_child_modifier_parameters(ParticleSettings *part, ParticleThreadContext *ctx, - ChildParticle *cpa, short cpa_from, int cpa_num, float *cpa_fuv, float *orco, ParticleTexture *ptex); -static void get_cpa_texture(Mesh *mesh, ParticleSystem *psys, ParticleSettings *part, ParticleData *par, - int child_index, int face_index, const float fw[4], float *orco, ParticleTexture *ptex, int event, float cfra); +static void get_child_modifier_parameters(ParticleSettings *part, + ParticleThreadContext *ctx, + ChildParticle *cpa, + short cpa_from, + int cpa_num, + float *cpa_fuv, + float *orco, + ParticleTexture *ptex); +static void get_cpa_texture(Mesh *mesh, + ParticleSystem *psys, + ParticleSettings *part, + ParticleData *par, + int child_index, + int face_index, + const float fw[4], + float *orco, + ParticleTexture *ptex, + int event, + float cfra); /* few helpers for countall etc. */ int count_particles(ParticleSystem *psys) { - ParticleSettings *part = psys->part; - PARTICLE_P; - int tot = 0; - - LOOP_SHOWN_PARTICLES { - if (pa->alive == PARS_UNBORN && (part->flag & PART_UNBORN) == 0) {} - else if (pa->alive == PARS_DEAD && (part->flag & PART_DIED) == 0) {} - else tot++; - } - return tot; + ParticleSettings *part = psys->part; + PARTICLE_P; + int tot = 0; + + LOOP_SHOWN_PARTICLES + { + if (pa->alive == PARS_UNBORN && (part->flag & PART_UNBORN) == 0) { + } + else if (pa->alive == PARS_DEAD && (part->flag & PART_DIED) == 0) { + } + else + tot++; + } + return tot; } int count_particles_mod(ParticleSystem *psys, int totgr, int cur) { - ParticleSettings *part = psys->part; - PARTICLE_P; - int tot = 0; - - LOOP_SHOWN_PARTICLES { - if (pa->alive == PARS_UNBORN && (part->flag & PART_UNBORN) == 0) {} - else if (pa->alive == PARS_DEAD && (part->flag & PART_DIED) == 0) {} - else if (p % totgr == cur) tot++; - } - return tot; + ParticleSettings *part = psys->part; + PARTICLE_P; + int tot = 0; + + LOOP_SHOWN_PARTICLES + { + if (pa->alive == PARS_UNBORN && (part->flag & PART_UNBORN) == 0) { + } + else if (pa->alive == PARS_DEAD && (part->flag & PART_DIED) == 0) { + } + else if (p % totgr == cur) + tot++; + } + return tot; } /* we allocate path cache memory in chunks instead of a big contiguous * chunk, windows' memory allocater fails to find big blocks of memory often */ @@ -136,1192 +158,1241 @@ int count_particles_mod(ParticleSystem *psys, int totgr, int cur) static ParticleCacheKey *pcache_key_segment_endpoint_safe(ParticleCacheKey *key) { - return (key->segments > 0) ? (key + (key->segments - 1)) : key; + return (key->segments > 0) ? (key + (key->segments - 1)) : key; } static ParticleCacheKey **psys_alloc_path_cache_buffers(ListBase *bufs, int tot, int totkeys) { - LinkData *buf; - ParticleCacheKey **cache; - int i, totkey, totbufkey; + LinkData *buf; + ParticleCacheKey **cache; + int i, totkey, totbufkey; - tot = MAX2(tot, 1); - totkey = 0; - cache = MEM_callocN(tot * sizeof(void *), "PathCacheArray"); + tot = MAX2(tot, 1); + totkey = 0; + cache = MEM_callocN(tot * sizeof(void *), "PathCacheArray"); - while (totkey < tot) { - totbufkey = MIN2(tot - totkey, PATH_CACHE_BUF_SIZE); - buf = MEM_callocN(sizeof(LinkData), "PathCacheLinkData"); - buf->data = MEM_callocN(sizeof(ParticleCacheKey) * totbufkey * totkeys, "ParticleCacheKey"); + while (totkey < tot) { + totbufkey = MIN2(tot - totkey, PATH_CACHE_BUF_SIZE); + buf = MEM_callocN(sizeof(LinkData), "PathCacheLinkData"); + buf->data = MEM_callocN(sizeof(ParticleCacheKey) * totbufkey * totkeys, "ParticleCacheKey"); - for (i = 0; i < totbufkey; i++) - cache[totkey + i] = ((ParticleCacheKey *)buf->data) + i * totkeys; + for (i = 0; i < totbufkey; i++) + cache[totkey + i] = ((ParticleCacheKey *)buf->data) + i * totkeys; - totkey += totbufkey; - BLI_addtail(bufs, buf); - } + totkey += totbufkey; + BLI_addtail(bufs, buf); + } - return cache; + return cache; } static void psys_free_path_cache_buffers(ParticleCacheKey **cache, ListBase *bufs) { - LinkData *buf; + LinkData *buf; - if (cache) - MEM_freeN(cache); + if (cache) + MEM_freeN(cache); - for (buf = bufs->first; buf; buf = buf->next) - MEM_freeN(buf->data); - BLI_freelistN(bufs); + for (buf = bufs->first; buf; buf = buf->next) + MEM_freeN(buf->data); + BLI_freelistN(bufs); } /************************************************/ -/* Getting stuff */ +/* Getting stuff */ /************************************************/ /* get object's active particle system safely */ ParticleSystem *psys_get_current(Object *ob) { - ParticleSystem *psys; - if (ob == NULL) return NULL; + ParticleSystem *psys; + if (ob == NULL) + return NULL; - for (psys = ob->particlesystem.first; psys; psys = psys->next) { - if (psys->flag & PSYS_CURRENT) - return psys; - } + for (psys = ob->particlesystem.first; psys; psys = psys->next) { + if (psys->flag & PSYS_CURRENT) + return psys; + } - return NULL; + return NULL; } short psys_get_current_num(Object *ob) { - ParticleSystem *psys; - short i; + ParticleSystem *psys; + short i; - if (ob == NULL) return 0; + if (ob == NULL) + return 0; - for (psys = ob->particlesystem.first, i = 0; psys; psys = psys->next, i++) - if (psys->flag & PSYS_CURRENT) - return i; + for (psys = ob->particlesystem.first, i = 0; psys; psys = psys->next, i++) + if (psys->flag & PSYS_CURRENT) + return i; - return i; + return i; } void psys_set_current_num(Object *ob, int index) { - ParticleSystem *psys; - short i; - - if (ob == NULL) return; - - for (psys = ob->particlesystem.first, i = 0; psys; psys = psys->next, i++) { - if (i == index) - psys->flag |= PSYS_CURRENT; - else - psys->flag &= ~PSYS_CURRENT; - } + ParticleSystem *psys; + short i; + + if (ob == NULL) + return; + + for (psys = ob->particlesystem.first, i = 0; psys; psys = psys->next, i++) { + if (i == index) + psys->flag |= PSYS_CURRENT; + else + psys->flag &= ~PSYS_CURRENT; + } } struct LatticeDeformData *psys_create_lattice_deform_data(ParticleSimulationData *sim) { - struct LatticeDeformData *lattice_deform_data = NULL; - - if (psys_in_edit_mode(sim->depsgraph, sim->psys) == 0) { - Object *lattice = NULL; - ModifierData *md = (ModifierData *)psys_get_modifier(sim->ob, sim->psys); - bool for_render = DEG_get_mode(sim->depsgraph) == DAG_EVAL_RENDER; - int mode = for_render ? eModifierMode_Render : eModifierMode_Realtime; - - for (; md; md = md->next) { - if (md->type == eModifierType_Lattice) { - if (md->mode & mode) { - LatticeModifierData *lmd = (LatticeModifierData *)md; - lattice = lmd->object; - sim->psys->lattice_strength = lmd->strength; - } - - break; - } - } - if (lattice) - lattice_deform_data = init_latt_deform(lattice, NULL); - } - - return lattice_deform_data; + struct LatticeDeformData *lattice_deform_data = NULL; + + if (psys_in_edit_mode(sim->depsgraph, sim->psys) == 0) { + Object *lattice = NULL; + ModifierData *md = (ModifierData *)psys_get_modifier(sim->ob, sim->psys); + bool for_render = DEG_get_mode(sim->depsgraph) == DAG_EVAL_RENDER; + int mode = for_render ? eModifierMode_Render : eModifierMode_Realtime; + + for (; md; md = md->next) { + if (md->type == eModifierType_Lattice) { + if (md->mode & mode) { + LatticeModifierData *lmd = (LatticeModifierData *)md; + lattice = lmd->object; + sim->psys->lattice_strength = lmd->strength; + } + + break; + } + } + if (lattice) + lattice_deform_data = init_latt_deform(lattice, NULL); + } + + return lattice_deform_data; } void psys_disable_all(Object *ob) { - ParticleSystem *psys = ob->particlesystem.first; + ParticleSystem *psys = ob->particlesystem.first; - for (; psys; psys = psys->next) - psys->flag |= PSYS_DISABLED; + for (; psys; psys = psys->next) + psys->flag |= PSYS_DISABLED; } void psys_enable_all(Object *ob) { - ParticleSystem *psys = ob->particlesystem.first; + ParticleSystem *psys = ob->particlesystem.first; - for (; psys; psys = psys->next) - psys->flag &= ~PSYS_DISABLED; + for (; psys; psys = psys->next) + psys->flag &= ~PSYS_DISABLED; } ParticleSystem *psys_orig_get(ParticleSystem *psys) { - if (psys->orig_psys == NULL) { - return psys; - } - return psys->orig_psys; + if (psys->orig_psys == NULL) { + return psys; + } + return psys->orig_psys; } -struct ParticleSystem *psys_eval_get(Depsgraph *depsgraph, - Object *object, - ParticleSystem *psys) +struct ParticleSystem *psys_eval_get(Depsgraph *depsgraph, Object *object, ParticleSystem *psys) { - Object *object_eval = DEG_get_evaluated_object(depsgraph, object); - if (object_eval == object) { - return psys; - } - ParticleSystem *psys_eval = object_eval->particlesystem.first; - while (psys_eval != NULL) { - if (psys_eval->orig_psys == psys) { - return psys_eval; - } - psys_eval = psys_eval->next; - } - return psys_eval; + Object *object_eval = DEG_get_evaluated_object(depsgraph, object); + if (object_eval == object) { + return psys; + } + ParticleSystem *psys_eval = object_eval->particlesystem.first; + while (psys_eval != NULL) { + if (psys_eval->orig_psys == psys) { + return psys_eval; + } + psys_eval = psys_eval->next; + } + return psys_eval; } static PTCacheEdit *psys_orig_edit_get(ParticleSystem *psys) { - if (psys->orig_psys == NULL) { - return psys->edit; - } - return psys->orig_psys->edit; + if (psys->orig_psys == NULL) { + return psys->edit; + } + return psys->orig_psys->edit; } bool psys_in_edit_mode(Depsgraph *depsgraph, const ParticleSystem *psys) { - const ViewLayer *view_layer = DEG_get_input_view_layer(depsgraph); - if (view_layer->basact == NULL) { - /* TODO(sergey): Needs double-check with multi-object edit. */ - return false; - } - const bool use_render_params = (DEG_get_mode(depsgraph) == DAG_EVAL_RENDER); - const Object *object = view_layer->basact->object; - if (object->mode != OB_MODE_PARTICLE_EDIT) { - return false; - } - const ParticleSystem *psys_orig = psys_orig_get((ParticleSystem *)psys); - return (psys_orig->edit || psys->pointcache->edit) && - (use_render_params == false); + const ViewLayer *view_layer = DEG_get_input_view_layer(depsgraph); + if (view_layer->basact == NULL) { + /* TODO(sergey): Needs double-check with multi-object edit. */ + return false; + } + const bool use_render_params = (DEG_get_mode(depsgraph) == DAG_EVAL_RENDER); + const Object *object = view_layer->basact->object; + if (object->mode != OB_MODE_PARTICLE_EDIT) { + return false; + } + const ParticleSystem *psys_orig = psys_orig_get((ParticleSystem *)psys); + return (psys_orig->edit || psys->pointcache->edit) && (use_render_params == false); } bool psys_check_enabled(Object *ob, ParticleSystem *psys, const bool use_render_params) { - ParticleSystemModifierData *psmd; + ParticleSystemModifierData *psmd; - if (psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE || !psys->part) - return 0; + if (psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE || !psys->part) + return 0; - psmd = psys_get_modifier(ob, psys); - if (use_render_params) { - if (!(psmd->modifier.mode & eModifierMode_Render)) - return 0; - } - else if (!(psmd->modifier.mode & eModifierMode_Realtime)) - return 0; + psmd = psys_get_modifier(ob, psys); + if (use_render_params) { + if (!(psmd->modifier.mode & eModifierMode_Render)) + return 0; + } + else if (!(psmd->modifier.mode & eModifierMode_Realtime)) + return 0; - return 1; + return 1; } bool psys_check_edited(ParticleSystem *psys) { - if (psys->part && psys->part->type == PART_HAIR) - return (psys->flag & PSYS_EDITED || (psys->edit && psys->edit->edited)); - else - return (psys->pointcache->edit && psys->pointcache->edit->edited); + if (psys->part && psys->part->type == PART_HAIR) + return (psys->flag & PSYS_EDITED || (psys->edit && psys->edit->edited)); + else + return (psys->pointcache->edit && psys->pointcache->edit->edited); } void psys_find_group_weights(ParticleSettings *part) { - /* Find object pointers based on index. If the collection is linked from - * another library linking may not have the object pointers available on - * file load, so we have to retrieve them later. See T49273. */ - const ListBase instance_collection_objects = BKE_collection_object_cache_get(part->instance_collection); - - for (ParticleDupliWeight *dw = part->instance_weights.first; dw; dw = dw->next) { - if (dw->ob == NULL) { - Base *base = BLI_findlink(&instance_collection_objects, dw->index); - if (base != NULL) { - dw->ob = base->object; - } - } - } + /* Find object pointers based on index. If the collection is linked from + * another library linking may not have the object pointers available on + * file load, so we have to retrieve them later. See T49273. */ + const ListBase instance_collection_objects = BKE_collection_object_cache_get( + part->instance_collection); + + for (ParticleDupliWeight *dw = part->instance_weights.first; dw; dw = dw->next) { + if (dw->ob == NULL) { + Base *base = BLI_findlink(&instance_collection_objects, dw->index); + if (base != NULL) { + dw->ob = base->object; + } + } + } } void psys_check_group_weights(ParticleSettings *part) { - ParticleDupliWeight *dw, *tdw; - - if (part->ren_as != PART_DRAW_GR || !part->instance_collection) { - BLI_freelistN(&part->instance_weights); - return; - } - - /* Find object pointers. */ - psys_find_group_weights(part); - - /* Remove NULL objects, that were removed from the collection. */ - dw = part->instance_weights.first; - while (dw) { - if (dw->ob == NULL || !BKE_collection_has_object_recursive(part->instance_collection, dw->ob)) { - tdw = dw->next; - BLI_freelinkN(&part->instance_weights, dw); - dw = tdw; - } - else { - dw = dw->next; - } - } - - /* Add new objects in the collection. */ - int index = 0; - FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN(part->instance_collection, object) - { - dw = part->instance_weights.first; - while (dw && dw->ob != object) { - dw = dw->next; - } - - if (!dw) { - dw = MEM_callocN(sizeof(ParticleDupliWeight), "ParticleDupliWeight"); - dw->ob = object; - dw->count = 1; - BLI_addtail(&part->instance_weights, dw); - } - - dw->index = index++; - } - FOREACH_COLLECTION_OBJECT_RECURSIVE_END; - - /* Ensure there is an element marked as current. */ - int current = 0; - for (dw = part->instance_weights.first; dw; dw = dw->next) { - if (dw->flag & PART_DUPLIW_CURRENT) { - current = 1; - break; - } - } - - if (!current) { - dw = part->instance_weights.first; - if (dw) - dw->flag |= PART_DUPLIW_CURRENT; - } + ParticleDupliWeight *dw, *tdw; + + if (part->ren_as != PART_DRAW_GR || !part->instance_collection) { + BLI_freelistN(&part->instance_weights); + return; + } + + /* Find object pointers. */ + psys_find_group_weights(part); + + /* Remove NULL objects, that were removed from the collection. */ + dw = part->instance_weights.first; + while (dw) { + if (dw->ob == NULL || + !BKE_collection_has_object_recursive(part->instance_collection, dw->ob)) { + tdw = dw->next; + BLI_freelinkN(&part->instance_weights, dw); + dw = tdw; + } + else { + dw = dw->next; + } + } + + /* Add new objects in the collection. */ + int index = 0; + FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (part->instance_collection, object) { + dw = part->instance_weights.first; + while (dw && dw->ob != object) { + dw = dw->next; + } + + if (!dw) { + dw = MEM_callocN(sizeof(ParticleDupliWeight), "ParticleDupliWeight"); + dw->ob = object; + dw->count = 1; + BLI_addtail(&part->instance_weights, dw); + } + + dw->index = index++; + } + FOREACH_COLLECTION_OBJECT_RECURSIVE_END; + + /* Ensure there is an element marked as current. */ + int current = 0; + for (dw = part->instance_weights.first; dw; dw = dw->next) { + if (dw->flag & PART_DUPLIW_CURRENT) { + current = 1; + break; + } + } + + if (!current) { + dw = part->instance_weights.first; + if (dw) + dw->flag |= PART_DUPLIW_CURRENT; + } } int psys_uses_gravity(ParticleSimulationData *sim) { - return sim->scene->physics_settings.flag & PHYS_GLOBAL_GRAVITY && sim->psys->part && sim->psys->part->effector_weights->global_gravity != 0.0f; + return sim->scene->physics_settings.flag & PHYS_GLOBAL_GRAVITY && sim->psys->part && + sim->psys->part->effector_weights->global_gravity != 0.0f; } /************************************************/ -/* Freeing stuff */ +/* Freeing stuff */ /************************************************/ static void fluid_free_settings(SPHFluidSettings *fluid) { - if (fluid) - MEM_freeN(fluid); + if (fluid) + MEM_freeN(fluid); } /** Free (or release) any data used by this particle settings (does not free the partsett itself). */ void BKE_particlesettings_free(ParticleSettings *part) { - int a; + int a; - BKE_animdata_free((ID *)part, false); + BKE_animdata_free((ID *)part, false); - for (a = 0; a < MAX_MTEX; a++) { - MEM_SAFE_FREE(part->mtex[a]); - } + for (a = 0; a < MAX_MTEX; a++) { + MEM_SAFE_FREE(part->mtex[a]); + } - if (part->clumpcurve) - curvemapping_free(part->clumpcurve); - if (part->roughcurve) - curvemapping_free(part->roughcurve); - if (part->twistcurve) - curvemapping_free(part->twistcurve); + if (part->clumpcurve) + curvemapping_free(part->clumpcurve); + if (part->roughcurve) + curvemapping_free(part->roughcurve); + if (part->twistcurve) + curvemapping_free(part->twistcurve); - BKE_partdeflect_free(part->pd); - BKE_partdeflect_free(part->pd2); + BKE_partdeflect_free(part->pd); + BKE_partdeflect_free(part->pd2); - MEM_SAFE_FREE(part->effector_weights); + MEM_SAFE_FREE(part->effector_weights); - BLI_freelistN(&part->instance_weights); + BLI_freelistN(&part->instance_weights); - boid_free_settings(part->boids); - fluid_free_settings(part->fluid); + boid_free_settings(part->boids); + fluid_free_settings(part->fluid); } void free_hair(Object *object, ParticleSystem *psys, int dynamics) { - PARTICLE_P; - - LOOP_PARTICLES { - if (pa->hair) - MEM_freeN(pa->hair); - pa->hair = NULL; - pa->totkey = 0; - } - - psys->flag &= ~PSYS_HAIR_DONE; - - if (psys->clmd) { - if (dynamics) { - modifier_free((ModifierData *)psys->clmd); - psys->clmd = NULL; - PTCacheID pid; - BKE_ptcache_id_from_particles(&pid, object, psys); - BKE_ptcache_id_clear(&pid, PTCACHE_CLEAR_ALL, 0); - } - else { - cloth_free_modifier(psys->clmd); - } - } - - if (psys->hair_in_mesh) - BKE_id_free(NULL, psys->hair_in_mesh); - psys->hair_in_mesh = NULL; - - if (psys->hair_out_mesh) - BKE_id_free(NULL, psys->hair_out_mesh); - psys->hair_out_mesh = NULL; + PARTICLE_P; + + LOOP_PARTICLES + { + if (pa->hair) + MEM_freeN(pa->hair); + pa->hair = NULL; + pa->totkey = 0; + } + + psys->flag &= ~PSYS_HAIR_DONE; + + if (psys->clmd) { + if (dynamics) { + modifier_free((ModifierData *)psys->clmd); + psys->clmd = NULL; + PTCacheID pid; + BKE_ptcache_id_from_particles(&pid, object, psys); + BKE_ptcache_id_clear(&pid, PTCACHE_CLEAR_ALL, 0); + } + else { + cloth_free_modifier(psys->clmd); + } + } + + if (psys->hair_in_mesh) + BKE_id_free(NULL, psys->hair_in_mesh); + psys->hair_in_mesh = NULL; + + if (psys->hair_out_mesh) + BKE_id_free(NULL, psys->hair_out_mesh); + psys->hair_out_mesh = NULL; } void free_keyed_keys(ParticleSystem *psys) { - PARTICLE_P; - - if (psys->part->type == PART_HAIR) - return; - - if (psys->particles && psys->particles->keys) { - MEM_freeN(psys->particles->keys); - - LOOP_PARTICLES { - if (pa->keys) { - pa->keys = NULL; - pa->totkey = 0; - } - } - } + PARTICLE_P; + + if (psys->part->type == PART_HAIR) + return; + + if (psys->particles && psys->particles->keys) { + MEM_freeN(psys->particles->keys); + + LOOP_PARTICLES + { + if (pa->keys) { + pa->keys = NULL; + pa->totkey = 0; + } + } + } } static void free_child_path_cache(ParticleSystem *psys) { - psys_free_path_cache_buffers(psys->childcache, &psys->childcachebufs); - psys->childcache = NULL; - psys->totchildcache = 0; + psys_free_path_cache_buffers(psys->childcache, &psys->childcachebufs); + psys->childcache = NULL; + psys->totchildcache = 0; } void psys_free_path_cache(ParticleSystem *psys, PTCacheEdit *edit) { - if (edit) { - psys_free_path_cache_buffers(edit->pathcache, &edit->pathcachebufs); - edit->pathcache = NULL; - edit->totcached = 0; - } - if (psys) { - psys_free_path_cache_buffers(psys->pathcache, &psys->pathcachebufs); - psys->pathcache = NULL; - psys->totcached = 0; - - free_child_path_cache(psys); - } + if (edit) { + psys_free_path_cache_buffers(edit->pathcache, &edit->pathcachebufs); + edit->pathcache = NULL; + edit->totcached = 0; + } + if (psys) { + psys_free_path_cache_buffers(psys->pathcache, &psys->pathcachebufs); + psys->pathcache = NULL; + psys->totcached = 0; + + free_child_path_cache(psys); + } } void psys_free_children(ParticleSystem *psys) { - if (psys->child) { - MEM_freeN(psys->child); - psys->child = NULL; - psys->totchild = 0; - } + if (psys->child) { + MEM_freeN(psys->child); + psys->child = NULL; + psys->totchild = 0; + } - free_child_path_cache(psys); + free_child_path_cache(psys); } void psys_free_particles(ParticleSystem *psys) { - PARTICLE_P; - - if (psys->particles) { - /* Even though psys->part should never be NULL, this can happen as an exception during deletion. - * See ID_REMAP_SKIP/FORCE/FLAG_NEVER_NULL_USAGE in BKE_library_remap. */ - if (psys->part && psys->part->type == PART_HAIR) { - LOOP_PARTICLES { - if (pa->hair) - MEM_freeN(pa->hair); - } - } - - if (psys->particles->keys) - MEM_freeN(psys->particles->keys); - - if (psys->particles->boid) - MEM_freeN(psys->particles->boid); - - MEM_freeN(psys->particles); - psys->particles = NULL; - psys->totpart = 0; - } + PARTICLE_P; + + if (psys->particles) { + /* Even though psys->part should never be NULL, this can happen as an exception during deletion. + * See ID_REMAP_SKIP/FORCE/FLAG_NEVER_NULL_USAGE in BKE_library_remap. */ + if (psys->part && psys->part->type == PART_HAIR) { + LOOP_PARTICLES + { + if (pa->hair) + MEM_freeN(pa->hair); + } + } + + if (psys->particles->keys) + MEM_freeN(psys->particles->keys); + + if (psys->particles->boid) + MEM_freeN(psys->particles->boid); + + MEM_freeN(psys->particles); + psys->particles = NULL; + psys->totpart = 0; + } } void psys_free_pdd(ParticleSystem *psys) { - if (psys->pdd) { - if (psys->pdd->cdata) - MEM_freeN(psys->pdd->cdata); - psys->pdd->cdata = NULL; - - if (psys->pdd->vdata) - MEM_freeN(psys->pdd->vdata); - psys->pdd->vdata = NULL; - - if (psys->pdd->ndata) - MEM_freeN(psys->pdd->ndata); - psys->pdd->ndata = NULL; - - if (psys->pdd->vedata) - MEM_freeN(psys->pdd->vedata); - psys->pdd->vedata = NULL; - - psys->pdd->totpoint = 0; - psys->pdd->totpart = 0; - psys->pdd->partsize = 0; - } + if (psys->pdd) { + if (psys->pdd->cdata) + MEM_freeN(psys->pdd->cdata); + psys->pdd->cdata = NULL; + + if (psys->pdd->vdata) + MEM_freeN(psys->pdd->vdata); + psys->pdd->vdata = NULL; + + if (psys->pdd->ndata) + MEM_freeN(psys->pdd->ndata); + psys->pdd->ndata = NULL; + + if (psys->pdd->vedata) + MEM_freeN(psys->pdd->vedata); + psys->pdd->vedata = NULL; + + psys->pdd->totpoint = 0; + psys->pdd->totpart = 0; + psys->pdd->partsize = 0; + } } /* free everything */ void psys_free(Object *ob, ParticleSystem *psys) { - if (psys) { - int nr = 0; - ParticleSystem *tpsys; - - psys_free_path_cache(psys, NULL); - - /* NOTE: We pass dynamics=0 to free_hair() to prevent it from doing an - * unneeded clear of the cache. But for historical reason that code path - * was only clearing cloth part of modifier data. - * - * Part of the story there is that particle evaluation is trying to not - * re-allocate thew ModifierData itself, and limits all allocations to - * the cloth part of it. - * - * Why evaluation is relying on hair_free() and in some specific code - * paths there is beyond me. - */ - free_hair(ob, psys, 0); - if (psys->clmd != NULL) { - modifier_free((ModifierData *)psys->clmd); - } - - psys_free_particles(psys); - - if (psys->edit && psys->free_edit) - psys->free_edit(psys->edit); - - if (psys->child) { - MEM_freeN(psys->child); - psys->child = NULL; - psys->totchild = 0; - } - - /* check if we are last non-visible particle system */ - for (tpsys = ob->particlesystem.first; tpsys; tpsys = tpsys->next) { - if (tpsys->part) { - if (ELEM(tpsys->part->ren_as, PART_DRAW_OB, PART_DRAW_GR)) { - nr++; - break; - } - } - } - /* clear do-not-draw-flag */ - if (!nr) - ob->transflag &= ~OB_DUPLIPARTS; - - psys->part = NULL; - - if ((psys->flag & PSYS_SHARED_CACHES) == 0) { - BKE_ptcache_free_list(&psys->ptcaches); - } - psys->pointcache = NULL; - - BLI_freelistN(&psys->targets); - - BLI_bvhtree_free(psys->bvhtree); - BLI_kdtree_3d_free(psys->tree); - - if (psys->fluid_springs) - MEM_freeN(psys->fluid_springs); - - BKE_effectors_free(psys->effectors); - - if (psys->pdd) { - psys_free_pdd(psys); - MEM_freeN(psys->pdd); - } - - BKE_particle_batch_cache_free(psys); - - MEM_freeN(psys); - } + if (psys) { + int nr = 0; + ParticleSystem *tpsys; + + psys_free_path_cache(psys, NULL); + + /* NOTE: We pass dynamics=0 to free_hair() to prevent it from doing an + * unneeded clear of the cache. But for historical reason that code path + * was only clearing cloth part of modifier data. + * + * Part of the story there is that particle evaluation is trying to not + * re-allocate thew ModifierData itself, and limits all allocations to + * the cloth part of it. + * + * Why evaluation is relying on hair_free() and in some specific code + * paths there is beyond me. + */ + free_hair(ob, psys, 0); + if (psys->clmd != NULL) { + modifier_free((ModifierData *)psys->clmd); + } + + psys_free_particles(psys); + + if (psys->edit && psys->free_edit) + psys->free_edit(psys->edit); + + if (psys->child) { + MEM_freeN(psys->child); + psys->child = NULL; + psys->totchild = 0; + } + + /* check if we are last non-visible particle system */ + for (tpsys = ob->particlesystem.first; tpsys; tpsys = tpsys->next) { + if (tpsys->part) { + if (ELEM(tpsys->part->ren_as, PART_DRAW_OB, PART_DRAW_GR)) { + nr++; + break; + } + } + } + /* clear do-not-draw-flag */ + if (!nr) + ob->transflag &= ~OB_DUPLIPARTS; + + psys->part = NULL; + + if ((psys->flag & PSYS_SHARED_CACHES) == 0) { + BKE_ptcache_free_list(&psys->ptcaches); + } + psys->pointcache = NULL; + + BLI_freelistN(&psys->targets); + + BLI_bvhtree_free(psys->bvhtree); + BLI_kdtree_3d_free(psys->tree); + + if (psys->fluid_springs) + MEM_freeN(psys->fluid_springs); + + BKE_effectors_free(psys->effectors); + + if (psys->pdd) { + psys_free_pdd(psys); + MEM_freeN(psys->pdd); + } + + BKE_particle_batch_cache_free(psys); + + MEM_freeN(psys); + } } void psys_copy_particles(ParticleSystem *psys_dst, ParticleSystem *psys_src) { - /* Free existing particles. */ - if (psys_dst->particles != psys_src->particles) { - psys_free_particles(psys_dst); - } - if (psys_dst->child != psys_src->child) { - psys_free_children(psys_dst); - } - /* Restore counters. */ - psys_dst->totpart = psys_src->totpart; - psys_dst->totchild = psys_src->totchild; - /* Copy particles and children. */ - psys_dst->particles = MEM_dupallocN(psys_src->particles); - psys_dst->child = MEM_dupallocN(psys_src->child); - if (psys_dst->part->type == PART_HAIR) { - ParticleData *pa; - int p; - for (p = 0, pa = psys_dst->particles; p < psys_dst->totpart; p++, pa++) { - pa->hair = MEM_dupallocN(pa->hair); - } - } - if (psys_dst->particles && (psys_dst->particles->keys || psys_dst->particles->boid)) { - ParticleKey *key = psys_dst->particles->keys; - BoidParticle *boid = psys_dst->particles->boid; - ParticleData *pa; - int p; - if (key != NULL) { - key = MEM_dupallocN(key); - } - if (boid != NULL) { - boid = MEM_dupallocN(boid); - } - for (p = 0, pa = psys_dst->particles; p < psys_dst->totpart; p++, pa++) { - if (boid != NULL) { - pa->boid = boid++; - } - if (key != NULL) { - pa->keys = key; - key += pa->totkey; - } - } - } + /* Free existing particles. */ + if (psys_dst->particles != psys_src->particles) { + psys_free_particles(psys_dst); + } + if (psys_dst->child != psys_src->child) { + psys_free_children(psys_dst); + } + /* Restore counters. */ + psys_dst->totpart = psys_src->totpart; + psys_dst->totchild = psys_src->totchild; + /* Copy particles and children. */ + psys_dst->particles = MEM_dupallocN(psys_src->particles); + psys_dst->child = MEM_dupallocN(psys_src->child); + if (psys_dst->part->type == PART_HAIR) { + ParticleData *pa; + int p; + for (p = 0, pa = psys_dst->particles; p < psys_dst->totpart; p++, pa++) { + pa->hair = MEM_dupallocN(pa->hair); + } + } + if (psys_dst->particles && (psys_dst->particles->keys || psys_dst->particles->boid)) { + ParticleKey *key = psys_dst->particles->keys; + BoidParticle *boid = psys_dst->particles->boid; + ParticleData *pa; + int p; + if (key != NULL) { + key = MEM_dupallocN(key); + } + if (boid != NULL) { + boid = MEM_dupallocN(boid); + } + for (p = 0, pa = psys_dst->particles; p < psys_dst->totpart; p++, pa++) { + if (boid != NULL) { + pa->boid = boid++; + } + if (key != NULL) { + pa->keys = key; + key += pa->totkey; + } + } + } } /************************************************/ -/* Interpolation */ +/* Interpolation */ /************************************************/ -static float interpolate_particle_value(float v1, float v2, float v3, float v4, const float w[4], int four) +static float interpolate_particle_value( + float v1, float v2, float v3, float v4, const float w[4], int four) { - float value; + float value; - value = w[0] * v1 + w[1] * v2 + w[2] * v3; - if (four) - value += w[3] * v4; + value = w[0] * v1 + w[1] * v2 + w[2] * v3; + if (four) + value += w[3] * v4; - CLAMP(value, 0.f, 1.f); + CLAMP(value, 0.f, 1.f); - return value; + return value; } -void psys_interpolate_particle(short type, ParticleKey keys[4], float dt, ParticleKey *result, bool velocity) +void psys_interpolate_particle( + short type, ParticleKey keys[4], float dt, ParticleKey *result, bool velocity) { - float t[4]; - - if (type < 0) { - interp_cubic_v3(result->co, result->vel, keys[1].co, keys[1].vel, keys[2].co, keys[2].vel, dt); - } - else { - key_curve_position_weights(dt, t, type); - - interp_v3_v3v3v3v3(result->co, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); - - if (velocity) { - float temp[3]; - - if (dt > 0.999f) { - key_curve_position_weights(dt - 0.001f, t, type); - interp_v3_v3v3v3v3(temp, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); - sub_v3_v3v3(result->vel, result->co, temp); - } - else { - key_curve_position_weights(dt + 0.001f, t, type); - interp_v3_v3v3v3v3(temp, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); - sub_v3_v3v3(result->vel, temp, result->co); - } - } - } + float t[4]; + + if (type < 0) { + interp_cubic_v3(result->co, result->vel, keys[1].co, keys[1].vel, keys[2].co, keys[2].vel, dt); + } + else { + key_curve_position_weights(dt, t, type); + + interp_v3_v3v3v3v3(result->co, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); + + if (velocity) { + float temp[3]; + + if (dt > 0.999f) { + key_curve_position_weights(dt - 0.001f, t, type); + interp_v3_v3v3v3v3(temp, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); + sub_v3_v3v3(result->vel, result->co, temp); + } + else { + key_curve_position_weights(dt + 0.001f, t, type); + interp_v3_v3v3v3v3(temp, keys[0].co, keys[1].co, keys[2].co, keys[3].co, t); + sub_v3_v3v3(result->vel, temp, result->co); + } + } + } } - typedef struct ParticleInterpolationData { - HairKey *hkey[2]; + HairKey *hkey[2]; - Mesh *mesh; - MVert *mvert[2]; + Mesh *mesh; + MVert *mvert[2]; - int keyed; - ParticleKey *kkey[2]; + int keyed; + ParticleKey *kkey[2]; - PointCache *cache; - PTCacheMem *pm; + PointCache *cache; + PTCacheMem *pm; - PTCacheEditPoint *epoint; - PTCacheEditKey *ekey[2]; + PTCacheEditPoint *epoint; + PTCacheEditKey *ekey[2]; - float birthtime, dietime; - int bspline; + float birthtime, dietime; + int bspline; } ParticleInterpolationData; /* Assumes pointcache->mem_cache exists, so for disk cached particles call psys_make_temp_pointcache() before use */ /* It uses ParticleInterpolationData->pm to store the current memory cache frame so it's thread safe. */ -static void get_pointcache_keys_for_time(Object *UNUSED(ob), PointCache *cache, PTCacheMem **cur, int index, float t, ParticleKey *key1, ParticleKey *key2) +static void get_pointcache_keys_for_time(Object *UNUSED(ob), + PointCache *cache, + PTCacheMem **cur, + int index, + float t, + ParticleKey *key1, + ParticleKey *key2) { - static PTCacheMem *pm = NULL; - int index1, index2; - - if (index < 0) { /* initialize */ - *cur = cache->mem_cache.first; - - if (*cur) - *cur = (*cur)->next; - } - else { - if (*cur) { - while (*cur && (*cur)->next && (float)(*cur)->frame < t) - *cur = (*cur)->next; - - pm = *cur; - - index2 = BKE_ptcache_mem_index_find(pm, index); - index1 = BKE_ptcache_mem_index_find(pm->prev, index); - if (index2 < 0) { - return; - } - - BKE_ptcache_make_particle_key(key2, index2, pm->data, (float)pm->frame); - if (index1 < 0) - copy_particle_key(key1, key2, 1); - else - BKE_ptcache_make_particle_key(key1, index1, pm->prev->data, (float)pm->prev->frame); - } - else if (cache->mem_cache.first) { - pm = cache->mem_cache.first; - index2 = BKE_ptcache_mem_index_find(pm, index); - if (index2 < 0) { - return; - } - BKE_ptcache_make_particle_key(key2, index2, pm->data, (float)pm->frame); - copy_particle_key(key1, key2, 1); - } - } + static PTCacheMem *pm = NULL; + int index1, index2; + + if (index < 0) { /* initialize */ + *cur = cache->mem_cache.first; + + if (*cur) + *cur = (*cur)->next; + } + else { + if (*cur) { + while (*cur && (*cur)->next && (float)(*cur)->frame < t) + *cur = (*cur)->next; + + pm = *cur; + + index2 = BKE_ptcache_mem_index_find(pm, index); + index1 = BKE_ptcache_mem_index_find(pm->prev, index); + if (index2 < 0) { + return; + } + + BKE_ptcache_make_particle_key(key2, index2, pm->data, (float)pm->frame); + if (index1 < 0) + copy_particle_key(key1, key2, 1); + else + BKE_ptcache_make_particle_key(key1, index1, pm->prev->data, (float)pm->prev->frame); + } + else if (cache->mem_cache.first) { + pm = cache->mem_cache.first; + index2 = BKE_ptcache_mem_index_find(pm, index); + if (index2 < 0) { + return; + } + BKE_ptcache_make_particle_key(key2, index2, pm->data, (float)pm->frame); + copy_particle_key(key1, key2, 1); + } + } } -static int get_pointcache_times_for_particle(PointCache *cache, int index, float *start, float *end) +static int get_pointcache_times_for_particle(PointCache *cache, + int index, + float *start, + float *end) { - PTCacheMem *pm; - int ret = 0; - - for (pm = cache->mem_cache.first; pm; pm = pm->next) { - if (BKE_ptcache_mem_index_find(pm, index) >= 0) { - *start = pm->frame; - ret++; - break; - } - } - - for (pm = cache->mem_cache.last; pm; pm = pm->prev) { - if (BKE_ptcache_mem_index_find(pm, index) >= 0) { - *end = pm->frame; - ret++; - break; - } - } - - return ret == 2; + PTCacheMem *pm; + int ret = 0; + + for (pm = cache->mem_cache.first; pm; pm = pm->next) { + if (BKE_ptcache_mem_index_find(pm, index) >= 0) { + *start = pm->frame; + ret++; + break; + } + } + + for (pm = cache->mem_cache.last; pm; pm = pm->prev) { + if (BKE_ptcache_mem_index_find(pm, index) >= 0) { + *end = pm->frame; + ret++; + break; + } + } + + return ret == 2; } float psys_get_dietime_from_cache(PointCache *cache, int index) { - PTCacheMem *pm; - int dietime = 10000000; /* some max value so that we can default to pa->time+lifetime */ + PTCacheMem *pm; + int dietime = 10000000; /* some max value so that we can default to pa->time+lifetime */ - for (pm = cache->mem_cache.last; pm; pm = pm->prev) { - if (BKE_ptcache_mem_index_find(pm, index) >= 0) - return (float)pm->frame; - } + for (pm = cache->mem_cache.last; pm; pm = pm->prev) { + if (BKE_ptcache_mem_index_find(pm, index) >= 0) + return (float)pm->frame; + } - return (float)dietime; + return (float)dietime; } -static void init_particle_interpolation(Object *ob, ParticleSystem *psys, ParticleData *pa, ParticleInterpolationData *pind) +static void init_particle_interpolation(Object *ob, + ParticleSystem *psys, + ParticleData *pa, + ParticleInterpolationData *pind) { - if (pind->epoint) { - PTCacheEditPoint *point = pind->epoint; - - pind->ekey[0] = point->keys; - pind->ekey[1] = point->totkey > 1 ? point->keys + 1 : NULL; - - pind->birthtime = *(point->keys->time); - pind->dietime = *((point->keys + point->totkey - 1)->time); - } - else if (pind->keyed) { - ParticleKey *key = pa->keys; - pind->kkey[0] = key; - pind->kkey[1] = pa->totkey > 1 ? key + 1 : NULL; - - pind->birthtime = key->time; - pind->dietime = (key + pa->totkey - 1)->time; - } - else if (pind->cache) { - float start = 0.0f, end = 0.0f; - get_pointcache_keys_for_time(ob, pind->cache, &pind->pm, -1, 0.0f, NULL, NULL); - pind->birthtime = pa ? pa->time : pind->cache->startframe; - pind->dietime = pa ? pa->dietime : pind->cache->endframe; - - if (get_pointcache_times_for_particle(pind->cache, pa - psys->particles, &start, &end)) { - pind->birthtime = MAX2(pind->birthtime, start); - pind->dietime = MIN2(pind->dietime, end); - } - } - else { - HairKey *key = pa->hair; - pind->hkey[0] = key; - pind->hkey[1] = key + 1; - - pind->birthtime = key->time; - pind->dietime = (key + pa->totkey - 1)->time; - - if (pind->mesh) { - pind->mvert[0] = &pind->mesh->mvert[pa->hair_index]; - pind->mvert[1] = pind->mvert[0] + 1; - } - } + if (pind->epoint) { + PTCacheEditPoint *point = pind->epoint; + + pind->ekey[0] = point->keys; + pind->ekey[1] = point->totkey > 1 ? point->keys + 1 : NULL; + + pind->birthtime = *(point->keys->time); + pind->dietime = *((point->keys + point->totkey - 1)->time); + } + else if (pind->keyed) { + ParticleKey *key = pa->keys; + pind->kkey[0] = key; + pind->kkey[1] = pa->totkey > 1 ? key + 1 : NULL; + + pind->birthtime = key->time; + pind->dietime = (key + pa->totkey - 1)->time; + } + else if (pind->cache) { + float start = 0.0f, end = 0.0f; + get_pointcache_keys_for_time(ob, pind->cache, &pind->pm, -1, 0.0f, NULL, NULL); + pind->birthtime = pa ? pa->time : pind->cache->startframe; + pind->dietime = pa ? pa->dietime : pind->cache->endframe; + + if (get_pointcache_times_for_particle(pind->cache, pa - psys->particles, &start, &end)) { + pind->birthtime = MAX2(pind->birthtime, start); + pind->dietime = MIN2(pind->dietime, end); + } + } + else { + HairKey *key = pa->hair; + pind->hkey[0] = key; + pind->hkey[1] = key + 1; + + pind->birthtime = key->time; + pind->dietime = (key + pa->totkey - 1)->time; + + if (pind->mesh) { + pind->mvert[0] = &pind->mesh->mvert[pa->hair_index]; + pind->mvert[1] = pind->mvert[0] + 1; + } + } } static void edit_to_particle(ParticleKey *key, PTCacheEditKey *ekey) { - copy_v3_v3(key->co, ekey->co); - if (ekey->vel) { - copy_v3_v3(key->vel, ekey->vel); - } - key->time = *(ekey->time); + copy_v3_v3(key->co, ekey->co); + if (ekey->vel) { + copy_v3_v3(key->vel, ekey->vel); + } + key->time = *(ekey->time); } static void hair_to_particle(ParticleKey *key, HairKey *hkey) { - copy_v3_v3(key->co, hkey->co); - key->time = hkey->time; + copy_v3_v3(key->co, hkey->co); + key->time = hkey->time; } static void mvert_to_particle(ParticleKey *key, MVert *mvert, HairKey *hkey) { - copy_v3_v3(key->co, mvert->co); - key->time = hkey->time; + copy_v3_v3(key->co, mvert->co); + key->time = hkey->time; } -static void do_particle_interpolation(ParticleSystem *psys, int p, ParticleData *pa, float t, ParticleInterpolationData *pind, ParticleKey *result) +static void do_particle_interpolation(ParticleSystem *psys, + int p, + ParticleData *pa, + float t, + ParticleInterpolationData *pind, + ParticleKey *result) { - PTCacheEditPoint *point = pind->epoint; - ParticleKey keys[4]; - int point_vel = (point && point->keys->vel); - float real_t, dfra, keytime, invdt = 1.f; - - /* billboards wont fill in all of these, so start cleared */ - memset(keys, 0, sizeof(keys)); - - /* interpret timing and find keys */ - if (point) { - if (result->time < 0.0f) - real_t = -result->time; - else - real_t = *(pind->ekey[0]->time) + t * (*(pind->ekey[0][point->totkey - 1].time) - *(pind->ekey[0]->time)); - - while (*(pind->ekey[1]->time) < real_t) - pind->ekey[1]++; - - pind->ekey[0] = pind->ekey[1] - 1; - } - else if (pind->keyed) { - /* we have only one key, so let's use that */ - if (pind->kkey[1] == NULL) { - copy_particle_key(result, pind->kkey[0], 1); - return; - } - - if (result->time < 0.0f) - real_t = -result->time; - else - real_t = pind->kkey[0]->time + t * (pind->kkey[0][pa->totkey - 1].time - pind->kkey[0]->time); - - if (psys->part->phystype == PART_PHYS_KEYED && psys->flag & PSYS_KEYED_TIMING) { - ParticleTarget *pt = psys->targets.first; - - pt = pt->next; - - while (pt && pa->time + pt->time < real_t) - pt = pt->next; - - if (pt) { - pt = pt->prev; - - if (pa->time + pt->time + pt->duration > real_t) - real_t = pa->time + pt->time; - } - else - real_t = pa->time + ((ParticleTarget *)psys->targets.last)->time; - } - - CLAMP(real_t, pa->time, pa->dietime); - - while (pind->kkey[1]->time < real_t) - pind->kkey[1]++; - - pind->kkey[0] = pind->kkey[1] - 1; - } - else if (pind->cache) { - if (result->time < 0.0f) /* flag for time in frames */ - real_t = -result->time; - else - real_t = pa->time + t * (pa->dietime - pa->time); - } - else { - if (result->time < 0.0f) - real_t = -result->time; - else - real_t = pind->hkey[0]->time + t * (pind->hkey[0][pa->totkey - 1].time - pind->hkey[0]->time); - - while (pind->hkey[1]->time < real_t) { - pind->hkey[1]++; - pind->mvert[1]++; - } - - pind->hkey[0] = pind->hkey[1] - 1; - } - - /* set actual interpolation keys */ - if (point) { - edit_to_particle(keys + 1, pind->ekey[0]); - edit_to_particle(keys + 2, pind->ekey[1]); - } - else if (pind->mesh) { - pind->mvert[0] = pind->mvert[1] - 1; - mvert_to_particle(keys + 1, pind->mvert[0], pind->hkey[0]); - mvert_to_particle(keys + 2, pind->mvert[1], pind->hkey[1]); - } - else if (pind->keyed) { - memcpy(keys + 1, pind->kkey[0], sizeof(ParticleKey)); - memcpy(keys + 2, pind->kkey[1], sizeof(ParticleKey)); - } - else if (pind->cache) { - get_pointcache_keys_for_time(NULL, pind->cache, &pind->pm, p, real_t, keys + 1, keys + 2); - } - else { - hair_to_particle(keys + 1, pind->hkey[0]); - hair_to_particle(keys + 2, pind->hkey[1]); - } - - /* set secondary interpolation keys for hair */ - if (!pind->keyed && !pind->cache && !point_vel) { - if (point) { - if (pind->ekey[0] != point->keys) - edit_to_particle(keys, pind->ekey[0] - 1); - else - edit_to_particle(keys, pind->ekey[0]); - } - else if (pind->mesh) { - if (pind->hkey[0] != pa->hair) - mvert_to_particle(keys, pind->mvert[0] - 1, pind->hkey[0] - 1); - else - mvert_to_particle(keys, pind->mvert[0], pind->hkey[0]); - } - else { - if (pind->hkey[0] != pa->hair) - hair_to_particle(keys, pind->hkey[0] - 1); - else - hair_to_particle(keys, pind->hkey[0]); - } - - if (point) { - if (pind->ekey[1] != point->keys + point->totkey - 1) - edit_to_particle(keys + 3, pind->ekey[1] + 1); - else - edit_to_particle(keys + 3, pind->ekey[1]); - } - else if (pind->mesh) { - if (pind->hkey[1] != pa->hair + pa->totkey - 1) - mvert_to_particle(keys + 3, pind->mvert[1] + 1, pind->hkey[1] + 1); - else - mvert_to_particle(keys + 3, pind->mvert[1], pind->hkey[1]); - } - else { - if (pind->hkey[1] != pa->hair + pa->totkey - 1) - hair_to_particle(keys + 3, pind->hkey[1] + 1); - else - hair_to_particle(keys + 3, pind->hkey[1]); - } - } - - dfra = keys[2].time - keys[1].time; - keytime = (real_t - keys[1].time) / dfra; - - /* convert velocity to timestep size */ - if (pind->keyed || pind->cache || point_vel) { - invdt = dfra * 0.04f * (psys ? psys->part->timetweak : 1.f); - mul_v3_fl(keys[1].vel, invdt); - mul_v3_fl(keys[2].vel, invdt); - interp_qt_qtqt(result->rot, keys[1].rot, keys[2].rot, keytime); - } - - /* now we should have in chronologiacl order k1<=k2<=t<=k3<=k4 with keytime between [0, 1]->[k2, k3] (k1 & k4 used for cardinal & bspline interpolation)*/ - psys_interpolate_particle((pind->keyed || pind->cache || point_vel) ? -1 /* signal for cubic interpolation */ - : (pind->bspline ? KEY_BSPLINE : KEY_CARDINAL), - keys, keytime, result, 1); - - /* the velocity needs to be converted back from cubic interpolation */ - if (pind->keyed || pind->cache || point_vel) - mul_v3_fl(result->vel, 1.f / invdt); + PTCacheEditPoint *point = pind->epoint; + ParticleKey keys[4]; + int point_vel = (point && point->keys->vel); + float real_t, dfra, keytime, invdt = 1.f; + + /* billboards wont fill in all of these, so start cleared */ + memset(keys, 0, sizeof(keys)); + + /* interpret timing and find keys */ + if (point) { + if (result->time < 0.0f) + real_t = -result->time; + else + real_t = *(pind->ekey[0]->time) + + t * (*(pind->ekey[0][point->totkey - 1].time) - *(pind->ekey[0]->time)); + + while (*(pind->ekey[1]->time) < real_t) + pind->ekey[1]++; + + pind->ekey[0] = pind->ekey[1] - 1; + } + else if (pind->keyed) { + /* we have only one key, so let's use that */ + if (pind->kkey[1] == NULL) { + copy_particle_key(result, pind->kkey[0], 1); + return; + } + + if (result->time < 0.0f) + real_t = -result->time; + else + real_t = pind->kkey[0]->time + + t * (pind->kkey[0][pa->totkey - 1].time - pind->kkey[0]->time); + + if (psys->part->phystype == PART_PHYS_KEYED && psys->flag & PSYS_KEYED_TIMING) { + ParticleTarget *pt = psys->targets.first; + + pt = pt->next; + + while (pt && pa->time + pt->time < real_t) + pt = pt->next; + + if (pt) { + pt = pt->prev; + + if (pa->time + pt->time + pt->duration > real_t) + real_t = pa->time + pt->time; + } + else + real_t = pa->time + ((ParticleTarget *)psys->targets.last)->time; + } + + CLAMP(real_t, pa->time, pa->dietime); + + while (pind->kkey[1]->time < real_t) + pind->kkey[1]++; + + pind->kkey[0] = pind->kkey[1] - 1; + } + else if (pind->cache) { + if (result->time < 0.0f) /* flag for time in frames */ + real_t = -result->time; + else + real_t = pa->time + t * (pa->dietime - pa->time); + } + else { + if (result->time < 0.0f) + real_t = -result->time; + else + real_t = pind->hkey[0]->time + + t * (pind->hkey[0][pa->totkey - 1].time - pind->hkey[0]->time); + + while (pind->hkey[1]->time < real_t) { + pind->hkey[1]++; + pind->mvert[1]++; + } + + pind->hkey[0] = pind->hkey[1] - 1; + } + + /* set actual interpolation keys */ + if (point) { + edit_to_particle(keys + 1, pind->ekey[0]); + edit_to_particle(keys + 2, pind->ekey[1]); + } + else if (pind->mesh) { + pind->mvert[0] = pind->mvert[1] - 1; + mvert_to_particle(keys + 1, pind->mvert[0], pind->hkey[0]); + mvert_to_particle(keys + 2, pind->mvert[1], pind->hkey[1]); + } + else if (pind->keyed) { + memcpy(keys + 1, pind->kkey[0], sizeof(ParticleKey)); + memcpy(keys + 2, pind->kkey[1], sizeof(ParticleKey)); + } + else if (pind->cache) { + get_pointcache_keys_for_time(NULL, pind->cache, &pind->pm, p, real_t, keys + 1, keys + 2); + } + else { + hair_to_particle(keys + 1, pind->hkey[0]); + hair_to_particle(keys + 2, pind->hkey[1]); + } + + /* set secondary interpolation keys for hair */ + if (!pind->keyed && !pind->cache && !point_vel) { + if (point) { + if (pind->ekey[0] != point->keys) + edit_to_particle(keys, pind->ekey[0] - 1); + else + edit_to_particle(keys, pind->ekey[0]); + } + else if (pind->mesh) { + if (pind->hkey[0] != pa->hair) + mvert_to_particle(keys, pind->mvert[0] - 1, pind->hkey[0] - 1); + else + mvert_to_particle(keys, pind->mvert[0], pind->hkey[0]); + } + else { + if (pind->hkey[0] != pa->hair) + hair_to_particle(keys, pind->hkey[0] - 1); + else + hair_to_particle(keys, pind->hkey[0]); + } + + if (point) { + if (pind->ekey[1] != point->keys + point->totkey - 1) + edit_to_particle(keys + 3, pind->ekey[1] + 1); + else + edit_to_particle(keys + 3, pind->ekey[1]); + } + else if (pind->mesh) { + if (pind->hkey[1] != pa->hair + pa->totkey - 1) + mvert_to_particle(keys + 3, pind->mvert[1] + 1, pind->hkey[1] + 1); + else + mvert_to_particle(keys + 3, pind->mvert[1], pind->hkey[1]); + } + else { + if (pind->hkey[1] != pa->hair + pa->totkey - 1) + hair_to_particle(keys + 3, pind->hkey[1] + 1); + else + hair_to_particle(keys + 3, pind->hkey[1]); + } + } + + dfra = keys[2].time - keys[1].time; + keytime = (real_t - keys[1].time) / dfra; + + /* convert velocity to timestep size */ + if (pind->keyed || pind->cache || point_vel) { + invdt = dfra * 0.04f * (psys ? psys->part->timetweak : 1.f); + mul_v3_fl(keys[1].vel, invdt); + mul_v3_fl(keys[2].vel, invdt); + interp_qt_qtqt(result->rot, keys[1].rot, keys[2].rot, keytime); + } + + /* now we should have in chronologiacl order k1<=k2<=t<=k3<=k4 with keytime between [0, 1]->[k2, k3] (k1 & k4 used for cardinal & bspline interpolation)*/ + psys_interpolate_particle((pind->keyed || pind->cache || point_vel) ? + -1 /* signal for cubic interpolation */ + : + (pind->bspline ? KEY_BSPLINE : KEY_CARDINAL), + keys, + keytime, + result, + 1); + + /* the velocity needs to be converted back from cubic interpolation */ + if (pind->keyed || pind->cache || point_vel) + mul_v3_fl(result->vel, 1.f / invdt); } static void interpolate_pathcache(ParticleCacheKey *first, float t, ParticleCacheKey *result) { - int i = 0; - ParticleCacheKey *cur = first; - - /* scale the requested time to fit the entire path even if the path is cut early */ - t *= (first + first->segments)->time; - - while (i < first->segments && cur->time < t) - cur++; - - if (cur->time == t) - *result = *cur; - else { - float dt = (t - (cur - 1)->time) / (cur->time - (cur - 1)->time); - interp_v3_v3v3(result->co, (cur - 1)->co, cur->co, dt); - interp_v3_v3v3(result->vel, (cur - 1)->vel, cur->vel, dt); - interp_qt_qtqt(result->rot, (cur - 1)->rot, cur->rot, dt); - result->time = t; - } - - /* first is actual base rotation, others are incremental from first */ - if (cur == first || cur - 1 == first) - copy_qt_qt(result->rot, first->rot); - else - mul_qt_qtqt(result->rot, first->rot, result->rot); + int i = 0; + ParticleCacheKey *cur = first; + + /* scale the requested time to fit the entire path even if the path is cut early */ + t *= (first + first->segments)->time; + + while (i < first->segments && cur->time < t) + cur++; + + if (cur->time == t) + *result = *cur; + else { + float dt = (t - (cur - 1)->time) / (cur->time - (cur - 1)->time); + interp_v3_v3v3(result->co, (cur - 1)->co, cur->co, dt); + interp_v3_v3v3(result->vel, (cur - 1)->vel, cur->vel, dt); + interp_qt_qtqt(result->rot, (cur - 1)->rot, cur->rot, dt); + result->time = t; + } + + /* first is actual base rotation, others are incremental from first */ + if (cur == first || cur - 1 == first) + copy_qt_qt(result->rot, first->rot); + else + mul_qt_qtqt(result->rot, first->rot, result->rot); } /************************************************/ -/* Particles on a dm */ +/* Particles on a dm */ /************************************************/ /* interpolate a location on a face based on face coordinates */ -void psys_interpolate_face(MVert *mvert, MFace *mface, MTFace *tface, float (*orcodata)[3], - float w[4], float vec[3], float nor[3], float utan[3], float vtan[3], +void psys_interpolate_face(MVert *mvert, + MFace *mface, + MTFace *tface, + float (*orcodata)[3], + float w[4], + float vec[3], + float nor[3], + float utan[3], + float vtan[3], float orco[3]) { - float *v1 = 0, *v2 = 0, *v3 = 0, *v4 = 0; - float e1[3], e2[3], s1, s2, t1, t2; - float *uv1, *uv2, *uv3, *uv4; - float n1[3], n2[3], n3[3], n4[3]; - float tuv[4][2]; - float *o1, *o2, *o3, *o4; - - v1 = mvert[mface->v1].co; - v2 = mvert[mface->v2].co; - v3 = mvert[mface->v3].co; - - normal_short_to_float_v3(n1, mvert[mface->v1].no); - normal_short_to_float_v3(n2, mvert[mface->v2].no); - normal_short_to_float_v3(n3, mvert[mface->v3].no); - - if (mface->v4) { - v4 = mvert[mface->v4].co; - normal_short_to_float_v3(n4, mvert[mface->v4].no); - - interp_v3_v3v3v3v3(vec, v1, v2, v3, v4, w); - - if (nor) { - if (mface->flag & ME_SMOOTH) - interp_v3_v3v3v3v3(nor, n1, n2, n3, n4, w); - else - normal_quad_v3(nor, v1, v2, v3, v4); - } - } - else { - interp_v3_v3v3v3(vec, v1, v2, v3, w); - - if (nor) { - if (mface->flag & ME_SMOOTH) - interp_v3_v3v3v3(nor, n1, n2, n3, w); - else - normal_tri_v3(nor, v1, v2, v3); - } - } - - /* calculate tangent vectors */ - if (utan && vtan) { - if (tface) { - uv1 = tface->uv[0]; - uv2 = tface->uv[1]; - uv3 = tface->uv[2]; - uv4 = tface->uv[3]; - } - else { - uv1 = tuv[0]; uv2 = tuv[1]; uv3 = tuv[2]; uv4 = tuv[3]; - map_to_sphere(uv1, uv1 + 1, v1[0], v1[1], v1[2]); - map_to_sphere(uv2, uv2 + 1, v2[0], v2[1], v2[2]); - map_to_sphere(uv3, uv3 + 1, v3[0], v3[1], v3[2]); - if (v4) - map_to_sphere(uv4, uv4 + 1, v4[0], v4[1], v4[2]); - } - - if (v4) { - s1 = uv3[0] - uv1[0]; - s2 = uv4[0] - uv1[0]; - - t1 = uv3[1] - uv1[1]; - t2 = uv4[1] - uv1[1]; - - sub_v3_v3v3(e1, v3, v1); - sub_v3_v3v3(e2, v4, v1); - } - else { - s1 = uv2[0] - uv1[0]; - s2 = uv3[0] - uv1[0]; - - t1 = uv2[1] - uv1[1]; - t2 = uv3[1] - uv1[1]; - - sub_v3_v3v3(e1, v2, v1); - sub_v3_v3v3(e2, v3, v1); - } - - vtan[0] = (s1 * e2[0] - s2 * e1[0]); - vtan[1] = (s1 * e2[1] - s2 * e1[1]); - vtan[2] = (s1 * e2[2] - s2 * e1[2]); - - utan[0] = (t1 * e2[0] - t2 * e1[0]); - utan[1] = (t1 * e2[1] - t2 * e1[1]); - utan[2] = (t1 * e2[2] - t2 * e1[2]); - } - - if (orco) { - if (orcodata) { - o1 = orcodata[mface->v1]; - o2 = orcodata[mface->v2]; - o3 = orcodata[mface->v3]; - - if (mface->v4) { - o4 = orcodata[mface->v4]; - - interp_v3_v3v3v3v3(orco, o1, o2, o3, o4, w); - } - else { - interp_v3_v3v3v3(orco, o1, o2, o3, w); - } - } - else { - copy_v3_v3(orco, vec); - } - } + float *v1 = 0, *v2 = 0, *v3 = 0, *v4 = 0; + float e1[3], e2[3], s1, s2, t1, t2; + float *uv1, *uv2, *uv3, *uv4; + float n1[3], n2[3], n3[3], n4[3]; + float tuv[4][2]; + float *o1, *o2, *o3, *o4; + + v1 = mvert[mface->v1].co; + v2 = mvert[mface->v2].co; + v3 = mvert[mface->v3].co; + + normal_short_to_float_v3(n1, mvert[mface->v1].no); + normal_short_to_float_v3(n2, mvert[mface->v2].no); + normal_short_to_float_v3(n3, mvert[mface->v3].no); + + if (mface->v4) { + v4 = mvert[mface->v4].co; + normal_short_to_float_v3(n4, mvert[mface->v4].no); + + interp_v3_v3v3v3v3(vec, v1, v2, v3, v4, w); + + if (nor) { + if (mface->flag & ME_SMOOTH) + interp_v3_v3v3v3v3(nor, n1, n2, n3, n4, w); + else + normal_quad_v3(nor, v1, v2, v3, v4); + } + } + else { + interp_v3_v3v3v3(vec, v1, v2, v3, w); + + if (nor) { + if (mface->flag & ME_SMOOTH) + interp_v3_v3v3v3(nor, n1, n2, n3, w); + else + normal_tri_v3(nor, v1, v2, v3); + } + } + + /* calculate tangent vectors */ + if (utan && vtan) { + if (tface) { + uv1 = tface->uv[0]; + uv2 = tface->uv[1]; + uv3 = tface->uv[2]; + uv4 = tface->uv[3]; + } + else { + uv1 = tuv[0]; + uv2 = tuv[1]; + uv3 = tuv[2]; + uv4 = tuv[3]; + map_to_sphere(uv1, uv1 + 1, v1[0], v1[1], v1[2]); + map_to_sphere(uv2, uv2 + 1, v2[0], v2[1], v2[2]); + map_to_sphere(uv3, uv3 + 1, v3[0], v3[1], v3[2]); + if (v4) + map_to_sphere(uv4, uv4 + 1, v4[0], v4[1], v4[2]); + } + + if (v4) { + s1 = uv3[0] - uv1[0]; + s2 = uv4[0] - uv1[0]; + + t1 = uv3[1] - uv1[1]; + t2 = uv4[1] - uv1[1]; + + sub_v3_v3v3(e1, v3, v1); + sub_v3_v3v3(e2, v4, v1); + } + else { + s1 = uv2[0] - uv1[0]; + s2 = uv3[0] - uv1[0]; + + t1 = uv2[1] - uv1[1]; + t2 = uv3[1] - uv1[1]; + + sub_v3_v3v3(e1, v2, v1); + sub_v3_v3v3(e2, v3, v1); + } + + vtan[0] = (s1 * e2[0] - s2 * e1[0]); + vtan[1] = (s1 * e2[1] - s2 * e1[1]); + vtan[2] = (s1 * e2[2] - s2 * e1[2]); + + utan[0] = (t1 * e2[0] - t2 * e1[0]); + utan[1] = (t1 * e2[1] - t2 * e1[1]); + utan[2] = (t1 * e2[2] - t2 * e1[2]); + } + + if (orco) { + if (orcodata) { + o1 = orcodata[mface->v1]; + o2 = orcodata[mface->v2]; + o3 = orcodata[mface->v3]; + + if (mface->v4) { + o4 = orcodata[mface->v4]; + + interp_v3_v3v3v3v3(orco, o1, o2, o3, o4, w); + } + else { + interp_v3_v3v3v3(orco, o1, o2, o3, w); + } + } + else { + copy_v3_v3(orco, vec); + } + } } void psys_interpolate_uvs(const MTFace *tface, int quad, const float w[4], float uvco[2]) { - float v10 = tface->uv[0][0]; - float v11 = tface->uv[0][1]; - float v20 = tface->uv[1][0]; - float v21 = tface->uv[1][1]; - float v30 = tface->uv[2][0]; - float v31 = tface->uv[2][1]; - float v40, v41; - - if (quad) { - v40 = tface->uv[3][0]; - v41 = tface->uv[3][1]; - - uvco[0] = w[0] * v10 + w[1] * v20 + w[2] * v30 + w[3] * v40; - uvco[1] = w[0] * v11 + w[1] * v21 + w[2] * v31 + w[3] * v41; - } - else { - uvco[0] = w[0] * v10 + w[1] * v20 + w[2] * v30; - uvco[1] = w[0] * v11 + w[1] * v21 + w[2] * v31; - } + float v10 = tface->uv[0][0]; + float v11 = tface->uv[0][1]; + float v20 = tface->uv[1][0]; + float v21 = tface->uv[1][1]; + float v30 = tface->uv[2][0]; + float v31 = tface->uv[2][1]; + float v40, v41; + + if (quad) { + v40 = tface->uv[3][0]; + v41 = tface->uv[3][1]; + + uvco[0] = w[0] * v10 + w[1] * v20 + w[2] * v30 + w[3] * v40; + uvco[1] = w[0] * v11 + w[1] * v21 + w[2] * v31 + w[3] * v41; + } + else { + uvco[0] = w[0] * v10 + w[1] * v20 + w[2] * v30; + uvco[1] = w[0] * v11 + w[1] * v21 + w[2] * v31; + } } void psys_interpolate_mcol(const MCol *mcol, int quad, const float w[4], MCol *mc) { - const char *cp1, *cp2, *cp3, *cp4; - char *cp; - - cp = (char *)mc; - cp1 = (const char *)&mcol[0]; - cp2 = (const char *)&mcol[1]; - cp3 = (const char *)&mcol[2]; - - if (quad) { - cp4 = (char *)&mcol[3]; - - cp[0] = (int)(w[0] * cp1[0] + w[1] * cp2[0] + w[2] * cp3[0] + w[3] * cp4[0]); - cp[1] = (int)(w[0] * cp1[1] + w[1] * cp2[1] + w[2] * cp3[1] + w[3] * cp4[1]); - cp[2] = (int)(w[0] * cp1[2] + w[1] * cp2[2] + w[2] * cp3[2] + w[3] * cp4[2]); - cp[3] = (int)(w[0] * cp1[3] + w[1] * cp2[3] + w[2] * cp3[3] + w[3] * cp4[3]); - } - else { - cp[0] = (int)(w[0] * cp1[0] + w[1] * cp2[0] + w[2] * cp3[0]); - cp[1] = (int)(w[0] * cp1[1] + w[1] * cp2[1] + w[2] * cp3[1]); - cp[2] = (int)(w[0] * cp1[2] + w[1] * cp2[2] + w[2] * cp3[2]); - cp[3] = (int)(w[0] * cp1[3] + w[1] * cp2[3] + w[2] * cp3[3]); - } + const char *cp1, *cp2, *cp3, *cp4; + char *cp; + + cp = (char *)mc; + cp1 = (const char *)&mcol[0]; + cp2 = (const char *)&mcol[1]; + cp3 = (const char *)&mcol[2]; + + if (quad) { + cp4 = (char *)&mcol[3]; + + cp[0] = (int)(w[0] * cp1[0] + w[1] * cp2[0] + w[2] * cp3[0] + w[3] * cp4[0]); + cp[1] = (int)(w[0] * cp1[1] + w[1] * cp2[1] + w[2] * cp3[1] + w[3] * cp4[1]); + cp[2] = (int)(w[0] * cp1[2] + w[1] * cp2[2] + w[2] * cp3[2] + w[3] * cp4[2]); + cp[3] = (int)(w[0] * cp1[3] + w[1] * cp2[3] + w[2] * cp3[3] + w[3] * cp4[3]); + } + else { + cp[0] = (int)(w[0] * cp1[0] + w[1] * cp2[0] + w[2] * cp3[0]); + cp[1] = (int)(w[0] * cp1[1] + w[1] * cp2[1] + w[2] * cp3[1]); + cp[2] = (int)(w[0] * cp1[2] + w[1] * cp2[2] + w[2] * cp3[2]); + cp[3] = (int)(w[0] * cp1[3] + w[1] * cp2[3] + w[2] * cp3[3]); + } } -static float psys_interpolate_value_from_verts(Mesh *mesh, short from, int index, const float fw[4], const float *values) +static float psys_interpolate_value_from_verts( + Mesh *mesh, short from, int index, const float fw[4], const float *values) { - if (values == 0 || index == -1) - return 0.0; - - switch (from) { - case PART_FROM_VERT: - return values[index]; - case PART_FROM_FACE: - case PART_FROM_VOLUME: - { - MFace *mf = &mesh->mface[index]; - return interpolate_particle_value(values[mf->v1], values[mf->v2], values[mf->v3], values[mf->v4], fw, mf->v4); - } - - } - return 0.0f; + if (values == 0 || index == -1) + return 0.0; + + switch (from) { + case PART_FROM_VERT: + return values[index]; + case PART_FROM_FACE: + case PART_FROM_VOLUME: { + MFace *mf = &mesh->mface[index]; + return interpolate_particle_value( + values[mf->v1], values[mf->v2], values[mf->v3], values[mf->v4], fw, mf->v4); + } + } + return 0.0f; } /* conversion of pa->fw to origspace layer coordinates */ static void psys_w_to_origspace(const float w[4], float uv[2]) { - uv[0] = w[1] + w[2]; - uv[1] = w[2] + w[3]; + uv[0] = w[1] + w[2]; + uv[1] = w[2] + w[3]; } /* conversion of pa->fw to weights in face from origspace */ static void psys_origspace_to_w(OrigSpaceFace *osface, int quad, const float w[4], float neww[4]) { - float v[4][3], co[3]; - - v[0][0] = osface->uv[0][0]; v[0][1] = osface->uv[0][1]; v[0][2] = 0.0f; - v[1][0] = osface->uv[1][0]; v[1][1] = osface->uv[1][1]; v[1][2] = 0.0f; - v[2][0] = osface->uv[2][0]; v[2][1] = osface->uv[2][1]; v[2][2] = 0.0f; - - psys_w_to_origspace(w, co); - co[2] = 0.0f; - - if (quad) { - v[3][0] = osface->uv[3][0]; v[3][1] = osface->uv[3][1]; v[3][2] = 0.0f; - interp_weights_poly_v3(neww, v, 4, co); - } - else { - interp_weights_poly_v3(neww, v, 3, co); - neww[3] = 0.0f; - } + float v[4][3], co[3]; + + v[0][0] = osface->uv[0][0]; + v[0][1] = osface->uv[0][1]; + v[0][2] = 0.0f; + v[1][0] = osface->uv[1][0]; + v[1][1] = osface->uv[1][1]; + v[1][2] = 0.0f; + v[2][0] = osface->uv[2][0]; + v[2][1] = osface->uv[2][1]; + v[2][2] = 0.0f; + + psys_w_to_origspace(w, co); + co[2] = 0.0f; + + if (quad) { + v[3][0] = osface->uv[3][0]; + v[3][1] = osface->uv[3][1]; + v[3][2] = 0.0f; + interp_weights_poly_v3(neww, v, 4, co); + } + else { + interp_weights_poly_v3(neww, v, 3, co); + neww[3] = 0.0f; + } } /** @@ -1336,1119 +1407,1302 @@ static void psys_origspace_to_w(OrigSpaceFace *osface, int quad, const float w[4 * one for each final \a mesh_final polygon, containing all its tessfaces indices. * \return The \a mesh_final tessface index. */ -int psys_particle_dm_face_lookup( - Mesh *mesh_final, Mesh *mesh_original, - int findex_orig, const float fw[4], struct LinkNode **poly_nodes) +int psys_particle_dm_face_lookup(Mesh *mesh_final, + Mesh *mesh_original, + int findex_orig, + const float fw[4], + struct LinkNode **poly_nodes) { - MFace *mtessface_final; - OrigSpaceFace *osface_final; - int pindex_orig; - float uv[2], (*faceuv)[2]; - - const int *index_mf_to_mpoly_deformed = NULL; - const int *index_mf_to_mpoly = NULL; - const int *index_mp_to_orig = NULL; - - const int totface_final = mesh_final->totface; - const int totface_deformed = mesh_original ? mesh_original->totface : totface_final; - - if (ELEM(0, totface_final, totface_deformed)) { - return DMCACHE_NOTFOUND; - } - - index_mf_to_mpoly = CustomData_get_layer(&mesh_final->fdata, CD_ORIGINDEX); - index_mp_to_orig = CustomData_get_layer(&mesh_final->pdata, CD_ORIGINDEX); - BLI_assert(index_mf_to_mpoly); - - if (mesh_original) { - index_mf_to_mpoly_deformed = CustomData_get_layer(&mesh_original->fdata, CD_ORIGINDEX); - } - else { - BLI_assert(mesh_final->runtime.deformed_only); - index_mf_to_mpoly_deformed = index_mf_to_mpoly; - } - BLI_assert(index_mf_to_mpoly_deformed); - - pindex_orig = index_mf_to_mpoly_deformed[findex_orig]; - - if (mesh_original == NULL) { - mesh_original = mesh_final; - } - - index_mf_to_mpoly_deformed = NULL; - - mtessface_final = mesh_final->mface; - osface_final = CustomData_get_layer(&mesh_final->fdata, CD_ORIGSPACE); - - if (osface_final == NULL) { - /* Assume we don't need osface_final data, and we get a direct 1-1 mapping... */ - if (findex_orig < totface_final) { - //printf("\tNO CD_ORIGSPACE, assuming not needed\n"); - return findex_orig; - } - else { - printf("\tNO CD_ORIGSPACE, error out of range\n"); - return DMCACHE_NOTFOUND; - } - } - else if (findex_orig >= mesh_original->totface) { - return DMCACHE_NOTFOUND; /* index not in the original mesh */ - } - - psys_w_to_origspace(fw, uv); - - if (poly_nodes) { - /* we can have a restricted linked list of faces to check, faster! */ - LinkNode *tessface_node = poly_nodes[pindex_orig]; - - for (; tessface_node; tessface_node = tessface_node->next) { - int findex_dst = POINTER_AS_INT(tessface_node->link); - faceuv = osface_final[findex_dst].uv; - - /* check that this intersects - Its possible this misses :/ - - * could also check its not between */ - if (mtessface_final[findex_dst].v4) { - if (isect_point_quad_v2(uv, faceuv[0], faceuv[1], faceuv[2], faceuv[3])) { - return findex_dst; - } - } - else if (isect_point_tri_v2(uv, faceuv[0], faceuv[1], faceuv[2])) { - return findex_dst; - } - } - } - else { /* if we have no node, try every face */ - for (int findex_dst = 0; findex_dst < totface_final; findex_dst++) { - /* If current tessface from 'final' DM and orig tessface (given by index) map to the same orig poly... */ - if (BKE_mesh_origindex_mface_mpoly(index_mf_to_mpoly, index_mp_to_orig, findex_dst) == pindex_orig) { - faceuv = osface_final[findex_dst].uv; - - /* check that this intersects - Its possible this misses :/ - - * could also check its not between */ - if (mtessface_final[findex_dst].v4) { - if (isect_point_quad_v2(uv, faceuv[0], faceuv[1], faceuv[2], faceuv[3])) { - return findex_dst; - } - } - else if (isect_point_tri_v2(uv, faceuv[0], faceuv[1], faceuv[2])) { - return findex_dst; - } - } - } - } - - return DMCACHE_NOTFOUND; + MFace *mtessface_final; + OrigSpaceFace *osface_final; + int pindex_orig; + float uv[2], (*faceuv)[2]; + + const int *index_mf_to_mpoly_deformed = NULL; + const int *index_mf_to_mpoly = NULL; + const int *index_mp_to_orig = NULL; + + const int totface_final = mesh_final->totface; + const int totface_deformed = mesh_original ? mesh_original->totface : totface_final; + + if (ELEM(0, totface_final, totface_deformed)) { + return DMCACHE_NOTFOUND; + } + + index_mf_to_mpoly = CustomData_get_layer(&mesh_final->fdata, CD_ORIGINDEX); + index_mp_to_orig = CustomData_get_layer(&mesh_final->pdata, CD_ORIGINDEX); + BLI_assert(index_mf_to_mpoly); + + if (mesh_original) { + index_mf_to_mpoly_deformed = CustomData_get_layer(&mesh_original->fdata, CD_ORIGINDEX); + } + else { + BLI_assert(mesh_final->runtime.deformed_only); + index_mf_to_mpoly_deformed = index_mf_to_mpoly; + } + BLI_assert(index_mf_to_mpoly_deformed); + + pindex_orig = index_mf_to_mpoly_deformed[findex_orig]; + + if (mesh_original == NULL) { + mesh_original = mesh_final; + } + + index_mf_to_mpoly_deformed = NULL; + + mtessface_final = mesh_final->mface; + osface_final = CustomData_get_layer(&mesh_final->fdata, CD_ORIGSPACE); + + if (osface_final == NULL) { + /* Assume we don't need osface_final data, and we get a direct 1-1 mapping... */ + if (findex_orig < totface_final) { + //printf("\tNO CD_ORIGSPACE, assuming not needed\n"); + return findex_orig; + } + else { + printf("\tNO CD_ORIGSPACE, error out of range\n"); + return DMCACHE_NOTFOUND; + } + } + else if (findex_orig >= mesh_original->totface) { + return DMCACHE_NOTFOUND; /* index not in the original mesh */ + } + + psys_w_to_origspace(fw, uv); + + if (poly_nodes) { + /* we can have a restricted linked list of faces to check, faster! */ + LinkNode *tessface_node = poly_nodes[pindex_orig]; + + for (; tessface_node; tessface_node = tessface_node->next) { + int findex_dst = POINTER_AS_INT(tessface_node->link); + faceuv = osface_final[findex_dst].uv; + + /* check that this intersects - Its possible this misses :/ - + * could also check its not between */ + if (mtessface_final[findex_dst].v4) { + if (isect_point_quad_v2(uv, faceuv[0], faceuv[1], faceuv[2], faceuv[3])) { + return findex_dst; + } + } + else if (isect_point_tri_v2(uv, faceuv[0], faceuv[1], faceuv[2])) { + return findex_dst; + } + } + } + else { /* if we have no node, try every face */ + for (int findex_dst = 0; findex_dst < totface_final; findex_dst++) { + /* If current tessface from 'final' DM and orig tessface (given by index) map to the same orig poly... */ + if (BKE_mesh_origindex_mface_mpoly(index_mf_to_mpoly, index_mp_to_orig, findex_dst) == + pindex_orig) { + faceuv = osface_final[findex_dst].uv; + + /* check that this intersects - Its possible this misses :/ - + * could also check its not between */ + if (mtessface_final[findex_dst].v4) { + if (isect_point_quad_v2(uv, faceuv[0], faceuv[1], faceuv[2], faceuv[3])) { + return findex_dst; + } + } + else if (isect_point_tri_v2(uv, faceuv[0], faceuv[1], faceuv[2])) { + return findex_dst; + } + } + } + } + + return DMCACHE_NOTFOUND; } -static int psys_map_index_on_dm(Mesh *mesh, int from, int index, int index_dmcache, const float fw[4], float UNUSED(foffset), int *mapindex, float mapfw[4]) +static int psys_map_index_on_dm(Mesh *mesh, + int from, + int index, + int index_dmcache, + const float fw[4], + float UNUSED(foffset), + int *mapindex, + float mapfw[4]) { - if (index < 0) - return 0; - - if (mesh->runtime.deformed_only || index_dmcache == DMCACHE_ISCHILD) { - /* for meshes that are either only deformed or for child particles, the - * index and fw do not require any mapping, so we can directly use it */ - if (from == PART_FROM_VERT) { - if (index >= mesh->totvert) - return 0; - - *mapindex = index; - } - else { /* FROM_FACE/FROM_VOLUME */ - if (index >= mesh->totface) - return 0; - - *mapindex = index; - copy_v4_v4(mapfw, fw); - } - } - else { - /* for other meshes that have been modified, we try to map the particle - * to their new location, which means a different index, and for faces - * also a new face interpolation weights */ - if (from == PART_FROM_VERT) { - if (index_dmcache == DMCACHE_NOTFOUND || index_dmcache > mesh->totvert) - return 0; - - *mapindex = index_dmcache; - } - else { /* FROM_FACE/FROM_VOLUME */ - /* find a face on the derived mesh that uses this face */ - MFace *mface; - OrigSpaceFace *osface; - int i; - - i = index_dmcache; - - if (i == DMCACHE_NOTFOUND || i >= mesh->totface) - return 0; - - *mapindex = i; - - /* modify the original weights to become - * weights for the derived mesh face */ - osface = CustomData_get_layer(&mesh->fdata, CD_ORIGSPACE); - mface = &mesh->mface[i]; - - if (osface == NULL) - mapfw[0] = mapfw[1] = mapfw[2] = mapfw[3] = 0.0f; - else - psys_origspace_to_w(&osface[i], mface->v4, fw, mapfw); - } - } - - return 1; + if (index < 0) + return 0; + + if (mesh->runtime.deformed_only || index_dmcache == DMCACHE_ISCHILD) { + /* for meshes that are either only deformed or for child particles, the + * index and fw do not require any mapping, so we can directly use it */ + if (from == PART_FROM_VERT) { + if (index >= mesh->totvert) + return 0; + + *mapindex = index; + } + else { /* FROM_FACE/FROM_VOLUME */ + if (index >= mesh->totface) + return 0; + + *mapindex = index; + copy_v4_v4(mapfw, fw); + } + } + else { + /* for other meshes that have been modified, we try to map the particle + * to their new location, which means a different index, and for faces + * also a new face interpolation weights */ + if (from == PART_FROM_VERT) { + if (index_dmcache == DMCACHE_NOTFOUND || index_dmcache > mesh->totvert) + return 0; + + *mapindex = index_dmcache; + } + else { /* FROM_FACE/FROM_VOLUME */ + /* find a face on the derived mesh that uses this face */ + MFace *mface; + OrigSpaceFace *osface; + int i; + + i = index_dmcache; + + if (i == DMCACHE_NOTFOUND || i >= mesh->totface) + return 0; + + *mapindex = i; + + /* modify the original weights to become + * weights for the derived mesh face */ + osface = CustomData_get_layer(&mesh->fdata, CD_ORIGSPACE); + mface = &mesh->mface[i]; + + if (osface == NULL) + mapfw[0] = mapfw[1] = mapfw[2] = mapfw[3] = 0.0f; + else + psys_origspace_to_w(&osface[i], mface->v4, fw, mapfw); + } + } + + return 1; } /* interprets particle data to get a point on a mesh in object space */ -void psys_particle_on_dm(Mesh *mesh_final, int from, int index, int index_dmcache, - const float fw[4], float foffset, float vec[3], float nor[3], float utan[3], float vtan[3], +void psys_particle_on_dm(Mesh *mesh_final, + int from, + int index, + int index_dmcache, + const float fw[4], + float foffset, + float vec[3], + float nor[3], + float utan[3], + float vtan[3], float orco[3]) { - float tmpnor[3], mapfw[4]; - float (*orcodata)[3]; - int mapindex; - - if (!psys_map_index_on_dm(mesh_final, from, index, index_dmcache, fw, foffset, &mapindex, mapfw)) { - if (vec) { vec[0] = vec[1] = vec[2] = 0.0; } - if (nor) { nor[0] = nor[1] = 0.0; nor[2] = 1.0; } - if (orco) { orco[0] = orco[1] = orco[2] = 0.0; } - if (utan) { utan[0] = utan[1] = utan[2] = 0.0; } - if (vtan) { vtan[0] = vtan[1] = vtan[2] = 0.0; } - - return; - } - - orcodata = CustomData_get_layer(&mesh_final->vdata, CD_ORCO); - - if (from == PART_FROM_VERT) { - copy_v3_v3(vec, mesh_final->mvert[mapindex].co); - - if (nor) { - normal_short_to_float_v3(nor, mesh_final->mvert[mapindex].no); - normalize_v3(nor); - } - - if (orco) { - if (orcodata) { - copy_v3_v3(orco, orcodata[mapindex]); - } - else { - copy_v3_v3(orco, vec); - } - } - - if (utan && vtan) { - utan[0] = utan[1] = utan[2] = 0.0f; - vtan[0] = vtan[1] = vtan[2] = 0.0f; - } - } - else { /* PART_FROM_FACE / PART_FROM_VOLUME */ - MFace *mface; - MTFace *mtface; - MVert *mvert; - - mface = &mesh_final->mface[mapindex]; - mvert = mesh_final->mvert; - mtface = mesh_final->mtface; - - if (mtface) - mtface += mapindex; - - if (from == PART_FROM_VOLUME) { - psys_interpolate_face(mvert, mface, mtface, orcodata, mapfw, vec, tmpnor, utan, vtan, orco); - if (nor) - copy_v3_v3(nor, tmpnor); - - normalize_v3(tmpnor); /* XXX Why not normalize tmpnor before copying it into nor??? -- mont29 */ - mul_v3_fl(tmpnor, -foffset); - add_v3_v3(vec, tmpnor); - } - else - psys_interpolate_face(mvert, mface, mtface, orcodata, mapfw, vec, nor, utan, vtan, orco); - } + float tmpnor[3], mapfw[4]; + float(*orcodata)[3]; + int mapindex; + + if (!psys_map_index_on_dm( + mesh_final, from, index, index_dmcache, fw, foffset, &mapindex, mapfw)) { + if (vec) { + vec[0] = vec[1] = vec[2] = 0.0; + } + if (nor) { + nor[0] = nor[1] = 0.0; + nor[2] = 1.0; + } + if (orco) { + orco[0] = orco[1] = orco[2] = 0.0; + } + if (utan) { + utan[0] = utan[1] = utan[2] = 0.0; + } + if (vtan) { + vtan[0] = vtan[1] = vtan[2] = 0.0; + } + + return; + } + + orcodata = CustomData_get_layer(&mesh_final->vdata, CD_ORCO); + + if (from == PART_FROM_VERT) { + copy_v3_v3(vec, mesh_final->mvert[mapindex].co); + + if (nor) { + normal_short_to_float_v3(nor, mesh_final->mvert[mapindex].no); + normalize_v3(nor); + } + + if (orco) { + if (orcodata) { + copy_v3_v3(orco, orcodata[mapindex]); + } + else { + copy_v3_v3(orco, vec); + } + } + + if (utan && vtan) { + utan[0] = utan[1] = utan[2] = 0.0f; + vtan[0] = vtan[1] = vtan[2] = 0.0f; + } + } + else { /* PART_FROM_FACE / PART_FROM_VOLUME */ + MFace *mface; + MTFace *mtface; + MVert *mvert; + + mface = &mesh_final->mface[mapindex]; + mvert = mesh_final->mvert; + mtface = mesh_final->mtface; + + if (mtface) + mtface += mapindex; + + if (from == PART_FROM_VOLUME) { + psys_interpolate_face(mvert, mface, mtface, orcodata, mapfw, vec, tmpnor, utan, vtan, orco); + if (nor) + copy_v3_v3(nor, tmpnor); + + normalize_v3( + tmpnor); /* XXX Why not normalize tmpnor before copying it into nor??? -- mont29 */ + mul_v3_fl(tmpnor, -foffset); + add_v3_v3(vec, tmpnor); + } + else + psys_interpolate_face(mvert, mface, mtface, orcodata, mapfw, vec, nor, utan, vtan, orco); + } } float psys_particle_value_from_verts(Mesh *mesh, short from, ParticleData *pa, float *values) { - float mapfw[4]; - int mapindex; + float mapfw[4]; + int mapindex; - if (!psys_map_index_on_dm(mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, &mapindex, mapfw)) - return 0.0f; + if (!psys_map_index_on_dm( + mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, &mapindex, mapfw)) + return 0.0f; - return psys_interpolate_value_from_verts(mesh, from, mapindex, mapfw, values); + return psys_interpolate_value_from_verts(mesh, from, mapindex, mapfw, values); } ParticleSystemModifierData *psys_get_modifier(Object *ob, ParticleSystem *psys) { - ModifierData *md; - ParticleSystemModifierData *psmd; - - for (md = ob->modifiers.first; md; md = md->next) { - if (md->type == eModifierType_ParticleSystem) { - psmd = (ParticleSystemModifierData *) md; - if (psmd->psys == psys) { - return psmd; - } - } - } - return NULL; + ModifierData *md; + ParticleSystemModifierData *psmd; + + for (md = ob->modifiers.first; md; md = md->next) { + if (md->type == eModifierType_ParticleSystem) { + psmd = (ParticleSystemModifierData *)md; + if (psmd->psys == psys) { + return psmd; + } + } + } + return NULL; } /************************************************/ -/* Particles on a shape */ +/* Particles on a shape */ /************************************************/ /* ready for future use */ -static void psys_particle_on_shape(int UNUSED(distr), int UNUSED(index), - float *UNUSED(fuv), float vec[3], float nor[3], float utan[3], float vtan[3], +static void psys_particle_on_shape(int UNUSED(distr), + int UNUSED(index), + float *UNUSED(fuv), + float vec[3], + float nor[3], + float utan[3], + float vtan[3], float orco[3]) { - /* TODO */ - float zerovec[3] = {0.0f, 0.0f, 0.0f}; - if (vec) { - copy_v3_v3(vec, zerovec); - } - if (nor) { - copy_v3_v3(nor, zerovec); - } - if (utan) { - copy_v3_v3(utan, zerovec); - } - if (vtan) { - copy_v3_v3(vtan, zerovec); - } - if (orco) { - copy_v3_v3(orco, zerovec); - } + /* TODO */ + float zerovec[3] = {0.0f, 0.0f, 0.0f}; + if (vec) { + copy_v3_v3(vec, zerovec); + } + if (nor) { + copy_v3_v3(nor, zerovec); + } + if (utan) { + copy_v3_v3(utan, zerovec); + } + if (vtan) { + copy_v3_v3(vtan, zerovec); + } + if (orco) { + copy_v3_v3(orco, zerovec); + } } /************************************************/ -/* Particles on emitter */ +/* Particles on emitter */ /************************************************/ void psys_emitter_customdata_mask(ParticleSystem *psys, CustomData_MeshMasks *r_cddata_masks) { - MTex *mtex; - int i; - - if (!psys->part) - return; - - for (i = 0; i < MAX_MTEX; i++) { - mtex = psys->part->mtex[i]; - if (mtex && mtex->mapto && (mtex->texco & TEXCO_UV)) - r_cddata_masks->fmask |= CD_MASK_MTFACE; - } - - if (psys->part->tanfac != 0.0f) - r_cddata_masks->fmask |= CD_MASK_MTFACE; - - /* ask for vertexgroups if we need them */ - for (i = 0; i < PSYS_TOT_VG; i++) { - if (psys->vgroup[i]) { - r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT; - break; - } - } - - /* particles only need this if they are after a non deform modifier, and - * the modifier stack will only create them in that case. */ - r_cddata_masks->lmask |= CD_MASK_ORIGSPACE_MLOOP; - /* XXX Check we do need all those? */ - r_cddata_masks->vmask |= CD_MASK_ORIGINDEX; - r_cddata_masks->emask |= CD_MASK_ORIGINDEX; - r_cddata_masks->pmask |= CD_MASK_ORIGINDEX; - - r_cddata_masks->vmask |= CD_MASK_ORCO; + MTex *mtex; + int i; + + if (!psys->part) + return; + + for (i = 0; i < MAX_MTEX; i++) { + mtex = psys->part->mtex[i]; + if (mtex && mtex->mapto && (mtex->texco & TEXCO_UV)) + r_cddata_masks->fmask |= CD_MASK_MTFACE; + } + + if (psys->part->tanfac != 0.0f) + r_cddata_masks->fmask |= CD_MASK_MTFACE; + + /* ask for vertexgroups if we need them */ + for (i = 0; i < PSYS_TOT_VG; i++) { + if (psys->vgroup[i]) { + r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT; + break; + } + } + + /* particles only need this if they are after a non deform modifier, and + * the modifier stack will only create them in that case. */ + r_cddata_masks->lmask |= CD_MASK_ORIGSPACE_MLOOP; + /* XXX Check we do need all those? */ + r_cddata_masks->vmask |= CD_MASK_ORIGINDEX; + r_cddata_masks->emask |= CD_MASK_ORIGINDEX; + r_cddata_masks->pmask |= CD_MASK_ORIGINDEX; + + r_cddata_masks->vmask |= CD_MASK_ORCO; } -void psys_particle_on_emitter(ParticleSystemModifierData *psmd, int from, int index, int index_dmcache, - float fuv[4], float foffset, float vec[3], float nor[3], float utan[3], float vtan[3], +void psys_particle_on_emitter(ParticleSystemModifierData *psmd, + int from, + int index, + int index_dmcache, + float fuv[4], + float foffset, + float vec[3], + float nor[3], + float utan[3], + float vtan[3], float orco[3]) { - if (psmd && psmd->mesh_final) { - if (psmd->psys->part->distr == PART_DISTR_GRID && psmd->psys->part->from != PART_FROM_VERT) { - if (vec) - copy_v3_v3(vec, fuv); - - if (orco) - copy_v3_v3(orco, fuv); - return; - } - /* we cant use the num_dmcache */ - psys_particle_on_dm(psmd->mesh_final, from, index, index_dmcache, fuv, foffset, vec, nor, utan, vtan, orco); - } - else - psys_particle_on_shape(from, index, fuv, vec, nor, utan, vtan, orco); - + if (psmd && psmd->mesh_final) { + if (psmd->psys->part->distr == PART_DISTR_GRID && psmd->psys->part->from != PART_FROM_VERT) { + if (vec) + copy_v3_v3(vec, fuv); + + if (orco) + copy_v3_v3(orco, fuv); + return; + } + /* we cant use the num_dmcache */ + psys_particle_on_dm( + psmd->mesh_final, from, index, index_dmcache, fuv, foffset, vec, nor, utan, vtan, orco); + } + else + psys_particle_on_shape(from, index, fuv, vec, nor, utan, vtan, orco); } /************************************************/ -/* Path Cache */ +/* Path Cache */ /************************************************/ void precalc_guides(ParticleSimulationData *sim, ListBase *effectors) { - EffectedPoint point; - ParticleKey state; - EffectorData efd; - EffectorCache *eff; - ParticleSystem *psys = sim->psys; - EffectorWeights *weights = sim->psys->part->effector_weights; - GuideEffectorData *data; - PARTICLE_P; - - if (!effectors) - return; - - LOOP_PARTICLES { - psys_particle_on_emitter(sim->psmd, sim->psys->part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, state.co, 0, 0, 0, 0); - - mul_m4_v3(sim->ob->obmat, state.co); - mul_mat3_m4_v3(sim->ob->obmat, state.vel); - - pd_point_from_particle(sim, pa, &state, &point); - - for (eff = effectors->first; eff; eff = eff->next) { - if (eff->pd->forcefield != PFIELD_GUIDE) - continue; - - if (!eff->guide_data) - eff->guide_data = MEM_callocN(sizeof(GuideEffectorData) * psys->totpart, "GuideEffectorData"); - - data = eff->guide_data + p; - - sub_v3_v3v3(efd.vec_to_point, state.co, eff->guide_loc); - copy_v3_v3(efd.nor, eff->guide_dir); - efd.distance = len_v3(efd.vec_to_point); - - copy_v3_v3(data->vec_to_point, efd.vec_to_point); - data->strength = effector_falloff(eff, &efd, &point, weights); - } - } + EffectedPoint point; + ParticleKey state; + EffectorData efd; + EffectorCache *eff; + ParticleSystem *psys = sim->psys; + EffectorWeights *weights = sim->psys->part->effector_weights; + GuideEffectorData *data; + PARTICLE_P; + + if (!effectors) + return; + + LOOP_PARTICLES + { + psys_particle_on_emitter(sim->psmd, + sim->psys->part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + state.co, + 0, + 0, + 0, + 0); + + mul_m4_v3(sim->ob->obmat, state.co); + mul_mat3_m4_v3(sim->ob->obmat, state.vel); + + pd_point_from_particle(sim, pa, &state, &point); + + for (eff = effectors->first; eff; eff = eff->next) { + if (eff->pd->forcefield != PFIELD_GUIDE) + continue; + + if (!eff->guide_data) + eff->guide_data = MEM_callocN(sizeof(GuideEffectorData) * psys->totpart, + "GuideEffectorData"); + + data = eff->guide_data + p; + + sub_v3_v3v3(efd.vec_to_point, state.co, eff->guide_loc); + copy_v3_v3(efd.nor, eff->guide_dir); + efd.distance = len_v3(efd.vec_to_point); + + copy_v3_v3(data->vec_to_point, efd.vec_to_point); + data->strength = effector_falloff(eff, &efd, &point, weights); + } + } } -int do_guides(Depsgraph *depsgraph, ParticleSettings *part, ListBase *effectors, ParticleKey *state, int index, float time) +int do_guides(Depsgraph *depsgraph, + ParticleSettings *part, + ListBase *effectors, + ParticleKey *state, + int index, + float time) { - CurveMapping *clumpcurve = (part->child_flag & PART_CHILD_USE_CLUMP_CURVE) ? part->clumpcurve : NULL; - CurveMapping *roughcurve = (part->child_flag & PART_CHILD_USE_ROUGH_CURVE) ? part->roughcurve : NULL; - EffectorCache *eff; - PartDeflect *pd; - Curve *cu; - GuideEffectorData *data; - - float effect[3] = {0.0f, 0.0f, 0.0f}, veffect[3] = {0.0f, 0.0f, 0.0f}; - float guidevec[4], guidedir[3], rot2[4], temp[3]; - float guidetime, radius, weight, angle, totstrength = 0.0f; - float vec_to_point[3]; - - if (effectors) for (eff = effectors->first; eff; eff = eff->next) { - pd = eff->pd; - - if (pd->forcefield != PFIELD_GUIDE) - continue; - - data = eff->guide_data + index; - - if (data->strength <= 0.0f) - continue; - - guidetime = time / (1.0f - pd->free_end); - - if (guidetime > 1.0f) - continue; - - cu = (Curve *)eff->ob->data; - - if (pd->flag & PFIELD_GUIDE_PATH_ADD) { - if (where_on_path(eff->ob, data->strength * guidetime, guidevec, guidedir, NULL, &radius, &weight) == 0) - return 0; - } - else { - if (where_on_path(eff->ob, guidetime, guidevec, guidedir, NULL, &radius, &weight) == 0) - return 0; - } - - mul_m4_v3(eff->ob->obmat, guidevec); - mul_mat3_m4_v3(eff->ob->obmat, guidedir); - - normalize_v3(guidedir); - - copy_v3_v3(vec_to_point, data->vec_to_point); - - if (guidetime != 0.0f) { - /* curve direction */ - cross_v3_v3v3(temp, eff->guide_dir, guidedir); - angle = dot_v3v3(eff->guide_dir, guidedir) / (len_v3(eff->guide_dir)); - angle = saacos(angle); - axis_angle_to_quat(rot2, temp, angle); - mul_qt_v3(rot2, vec_to_point); - - /* curve tilt */ - axis_angle_to_quat(rot2, guidedir, guidevec[3] - eff->guide_loc[3]); - mul_qt_v3(rot2, vec_to_point); - } - - /* curve taper */ - if (cu->taperobj) - mul_v3_fl(vec_to_point, BKE_displist_calc_taper(depsgraph, eff->scene, cu->taperobj, (int)(data->strength * guidetime * 100.0f), 100)); - - else { /* curve size*/ - if (cu->flag & CU_PATH_RADIUS) { - mul_v3_fl(vec_to_point, radius); - } - } - - if (clumpcurve) - curvemapping_changed_all(clumpcurve); - if (roughcurve) - curvemapping_changed_all(roughcurve); - - { - ParticleKey key; - float par_co[3] = {0.0f, 0.0f, 0.0f}; - float par_vel[3] = {0.0f, 0.0f, 0.0f}; - float par_rot[4] = {1.0f, 0.0f, 0.0f, 0.0f}; - float orco_offset[3] = {0.0f, 0.0f, 0.0f}; - - copy_v3_v3(key.co, vec_to_point); - do_kink(&key, par_co, par_vel, par_rot, guidetime, pd->kink_freq, pd->kink_shape, pd->kink_amp, 0.f, pd->kink, pd->kink_axis, 0, 0); - do_clump(&key, par_co, guidetime, orco_offset, pd->clump_fac, pd->clump_pow, 1.0f, - part->child_flag & PART_CHILD_USE_CLUMP_NOISE, part->clump_noise_size, clumpcurve); - copy_v3_v3(vec_to_point, key.co); - } - - add_v3_v3(vec_to_point, guidevec); - - //sub_v3_v3v3(pa_loc, pa_loc, pa_zero); - madd_v3_v3fl(effect, vec_to_point, data->strength); - madd_v3_v3fl(veffect, guidedir, data->strength); - totstrength += data->strength; - - if (pd->flag & PFIELD_GUIDE_PATH_WEIGHT) - totstrength *= weight; - } - - if (totstrength != 0.0f) { - if (totstrength > 1.0f) - mul_v3_fl(effect, 1.0f / totstrength); - CLAMP(totstrength, 0.0f, 1.0f); - //add_v3_v3(effect, pa_zero); - interp_v3_v3v3(state->co, state->co, effect, totstrength); - - normalize_v3(veffect); - mul_v3_fl(veffect, len_v3(state->vel)); - copy_v3_v3(state->vel, veffect); - return 1; - } - return 0; + CurveMapping *clumpcurve = (part->child_flag & PART_CHILD_USE_CLUMP_CURVE) ? part->clumpcurve : + NULL; + CurveMapping *roughcurve = (part->child_flag & PART_CHILD_USE_ROUGH_CURVE) ? part->roughcurve : + NULL; + EffectorCache *eff; + PartDeflect *pd; + Curve *cu; + GuideEffectorData *data; + + float effect[3] = {0.0f, 0.0f, 0.0f}, veffect[3] = {0.0f, 0.0f, 0.0f}; + float guidevec[4], guidedir[3], rot2[4], temp[3]; + float guidetime, radius, weight, angle, totstrength = 0.0f; + float vec_to_point[3]; + + if (effectors) + for (eff = effectors->first; eff; eff = eff->next) { + pd = eff->pd; + + if (pd->forcefield != PFIELD_GUIDE) + continue; + + data = eff->guide_data + index; + + if (data->strength <= 0.0f) + continue; + + guidetime = time / (1.0f - pd->free_end); + + if (guidetime > 1.0f) + continue; + + cu = (Curve *)eff->ob->data; + + if (pd->flag & PFIELD_GUIDE_PATH_ADD) { + if (where_on_path( + eff->ob, data->strength * guidetime, guidevec, guidedir, NULL, &radius, &weight) == + 0) + return 0; + } + else { + if (where_on_path(eff->ob, guidetime, guidevec, guidedir, NULL, &radius, &weight) == 0) + return 0; + } + + mul_m4_v3(eff->ob->obmat, guidevec); + mul_mat3_m4_v3(eff->ob->obmat, guidedir); + + normalize_v3(guidedir); + + copy_v3_v3(vec_to_point, data->vec_to_point); + + if (guidetime != 0.0f) { + /* curve direction */ + cross_v3_v3v3(temp, eff->guide_dir, guidedir); + angle = dot_v3v3(eff->guide_dir, guidedir) / (len_v3(eff->guide_dir)); + angle = saacos(angle); + axis_angle_to_quat(rot2, temp, angle); + mul_qt_v3(rot2, vec_to_point); + + /* curve tilt */ + axis_angle_to_quat(rot2, guidedir, guidevec[3] - eff->guide_loc[3]); + mul_qt_v3(rot2, vec_to_point); + } + + /* curve taper */ + if (cu->taperobj) + mul_v3_fl(vec_to_point, + BKE_displist_calc_taper(depsgraph, + eff->scene, + cu->taperobj, + (int)(data->strength * guidetime * 100.0f), + 100)); + + else { /* curve size*/ + if (cu->flag & CU_PATH_RADIUS) { + mul_v3_fl(vec_to_point, radius); + } + } + + if (clumpcurve) + curvemapping_changed_all(clumpcurve); + if (roughcurve) + curvemapping_changed_all(roughcurve); + + { + ParticleKey key; + float par_co[3] = {0.0f, 0.0f, 0.0f}; + float par_vel[3] = {0.0f, 0.0f, 0.0f}; + float par_rot[4] = {1.0f, 0.0f, 0.0f, 0.0f}; + float orco_offset[3] = {0.0f, 0.0f, 0.0f}; + + copy_v3_v3(key.co, vec_to_point); + do_kink(&key, + par_co, + par_vel, + par_rot, + guidetime, + pd->kink_freq, + pd->kink_shape, + pd->kink_amp, + 0.f, + pd->kink, + pd->kink_axis, + 0, + 0); + do_clump(&key, + par_co, + guidetime, + orco_offset, + pd->clump_fac, + pd->clump_pow, + 1.0f, + part->child_flag & PART_CHILD_USE_CLUMP_NOISE, + part->clump_noise_size, + clumpcurve); + copy_v3_v3(vec_to_point, key.co); + } + + add_v3_v3(vec_to_point, guidevec); + + //sub_v3_v3v3(pa_loc, pa_loc, pa_zero); + madd_v3_v3fl(effect, vec_to_point, data->strength); + madd_v3_v3fl(veffect, guidedir, data->strength); + totstrength += data->strength; + + if (pd->flag & PFIELD_GUIDE_PATH_WEIGHT) + totstrength *= weight; + } + + if (totstrength != 0.0f) { + if (totstrength > 1.0f) + mul_v3_fl(effect, 1.0f / totstrength); + CLAMP(totstrength, 0.0f, 1.0f); + //add_v3_v3(effect, pa_zero); + interp_v3_v3v3(state->co, state->co, effect, totstrength); + + normalize_v3(veffect); + mul_v3_fl(veffect, len_v3(state->vel)); + copy_v3_v3(state->vel, veffect); + return 1; + } + return 0; } -static void do_path_effectors(ParticleSimulationData *sim, int i, ParticleCacheKey *ca, int k, int steps, float *UNUSED(rootco), float effector, float UNUSED(dfra), float UNUSED(cfra), float *length, float *vec) +static void do_path_effectors(ParticleSimulationData *sim, + int i, + ParticleCacheKey *ca, + int k, + int steps, + float *UNUSED(rootco), + float effector, + float UNUSED(dfra), + float UNUSED(cfra), + float *length, + float *vec) { - float force[3] = {0.0f, 0.0f, 0.0f}; - ParticleKey eff_key; - EffectedPoint epoint; + float force[3] = {0.0f, 0.0f, 0.0f}; + ParticleKey eff_key; + EffectedPoint epoint; - /* Don't apply effectors for dynamic hair, otherwise the effectors don't get applied twice. */ - if (sim->psys->flag & PSYS_HAIR_DYNAMICS) - return; + /* Don't apply effectors for dynamic hair, otherwise the effectors don't get applied twice. */ + if (sim->psys->flag & PSYS_HAIR_DYNAMICS) + return; - copy_v3_v3(eff_key.co, (ca - 1)->co); - copy_v3_v3(eff_key.vel, (ca - 1)->vel); - copy_qt_qt(eff_key.rot, (ca - 1)->rot); + copy_v3_v3(eff_key.co, (ca - 1)->co); + copy_v3_v3(eff_key.vel, (ca - 1)->vel); + copy_qt_qt(eff_key.rot, (ca - 1)->rot); - pd_point_from_particle(sim, sim->psys->particles + i, &eff_key, &epoint); - BKE_effectors_apply(sim->psys->effectors, sim->colliders, sim->psys->part->effector_weights, &epoint, force, NULL); + pd_point_from_particle(sim, sim->psys->particles + i, &eff_key, &epoint); + BKE_effectors_apply(sim->psys->effectors, + sim->colliders, + sim->psys->part->effector_weights, + &epoint, + force, + NULL); - mul_v3_fl(force, effector * powf((float)k / (float)steps, 100.0f * sim->psys->part->eff_hair) / (float)steps); + mul_v3_fl(force, + effector * powf((float)k / (float)steps, 100.0f * sim->psys->part->eff_hair) / + (float)steps); - add_v3_v3(force, vec); + add_v3_v3(force, vec); - normalize_v3(force); + normalize_v3(force); - if (k < steps) - sub_v3_v3v3(vec, (ca + 1)->co, ca->co); + if (k < steps) + sub_v3_v3v3(vec, (ca + 1)->co, ca->co); - madd_v3_v3v3fl(ca->co, (ca - 1)->co, force, *length); + madd_v3_v3v3fl(ca->co, (ca - 1)->co, force, *length); - if (k < steps) - *length = len_v3(vec); + if (k < steps) + *length = len_v3(vec); } -static void offset_child(ChildParticle *cpa, ParticleKey *par, float *par_rot, ParticleKey *child, float flat, float radius) +static void offset_child(ChildParticle *cpa, + ParticleKey *par, + float *par_rot, + ParticleKey *child, + float flat, + float radius) { - copy_v3_v3(child->co, cpa->fuv); - mul_v3_fl(child->co, radius); + copy_v3_v3(child->co, cpa->fuv); + mul_v3_fl(child->co, radius); - child->co[0] *= flat; + child->co[0] *= flat; - copy_v3_v3(child->vel, par->vel); + copy_v3_v3(child->vel, par->vel); - if (par_rot) { - mul_qt_v3(par_rot, child->co); - copy_qt_qt(child->rot, par_rot); - } - else - unit_qt(child->rot); + if (par_rot) { + mul_qt_v3(par_rot, child->co); + copy_qt_qt(child->rot, par_rot); + } + else + unit_qt(child->rot); - add_v3_v3(child->co, par->co); + add_v3_v3(child->co, par->co); } float *psys_cache_vgroup(Mesh *mesh, ParticleSystem *psys, int vgroup) { - float *vg = 0; - - if (vgroup < 0) { - /* hair dynamics pinning vgroup */ - - } - else if (psys->vgroup[vgroup]) { - MDeformVert *dvert = mesh->dvert; - if (dvert) { - int totvert = mesh->totvert, i; - vg = MEM_callocN(sizeof(float) * totvert, "vg_cache"); - if (psys->vg_neg & (1 << vgroup)) { - for (i = 0; i < totvert; i++) - vg[i] = 1.0f - defvert_find_weight(&dvert[i], psys->vgroup[vgroup] - 1); - } - else { - for (i = 0; i < totvert; i++) - vg[i] = defvert_find_weight(&dvert[i], psys->vgroup[vgroup] - 1); - } - } - } - return vg; + float *vg = 0; + + if (vgroup < 0) { + /* hair dynamics pinning vgroup */ + } + else if (psys->vgroup[vgroup]) { + MDeformVert *dvert = mesh->dvert; + if (dvert) { + int totvert = mesh->totvert, i; + vg = MEM_callocN(sizeof(float) * totvert, "vg_cache"); + if (psys->vg_neg & (1 << vgroup)) { + for (i = 0; i < totvert; i++) + vg[i] = 1.0f - defvert_find_weight(&dvert[i], psys->vgroup[vgroup] - 1); + } + else { + for (i = 0; i < totvert; i++) + vg[i] = defvert_find_weight(&dvert[i], psys->vgroup[vgroup] - 1); + } + } + } + return vg; } void psys_find_parents(ParticleSimulationData *sim, const bool use_render_params) { - ParticleSystem *psys = sim->psys; - ParticleSettings *part = sim->psys->part; - KDTree_3d *tree; - ChildParticle *cpa; - ParticleTexture ptex; - int p, totparent, totchild = sim->psys->totchild; - float co[3], orco[3]; - int from = PART_FROM_FACE; - totparent = (int)(totchild * part->parents * 0.3f); - - if (use_render_params && part->child_nbr && part->ren_child_nbr) - totparent *= (float)part->child_nbr / (float)part->ren_child_nbr; - - /* hard limit, workaround for it being ignored above */ - if (sim->psys->totpart < totparent) { - totparent = sim->psys->totpart; - } - - tree = BLI_kdtree_3d_new(totparent); - - for (p = 0, cpa = sim->psys->child; p < totparent; p++, cpa++) { - psys_particle_on_emitter(sim->psmd, from, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, co, 0, 0, 0, orco); - - /* Check if particle doesn't exist because of texture influence. Insert only existing particles into kdtree. */ - get_cpa_texture(sim->psmd->mesh_final, psys, part, psys->particles + cpa->pa[0], p, cpa->num, cpa->fuv, orco, &ptex, PAMAP_DENS | PAMAP_CHILD, psys->cfra); - - if (ptex.exist >= psys_frand(psys, p + 24)) { - BLI_kdtree_3d_insert(tree, p, orco); - } - } - - BLI_kdtree_3d_balance(tree); - - for (; p < totchild; p++, cpa++) { - psys_particle_on_emitter(sim->psmd, from, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, co, 0, 0, 0, orco); - cpa->parent = BLI_kdtree_3d_find_nearest(tree, orco, NULL); - } - - BLI_kdtree_3d_free(tree); + ParticleSystem *psys = sim->psys; + ParticleSettings *part = sim->psys->part; + KDTree_3d *tree; + ChildParticle *cpa; + ParticleTexture ptex; + int p, totparent, totchild = sim->psys->totchild; + float co[3], orco[3]; + int from = PART_FROM_FACE; + totparent = (int)(totchild * part->parents * 0.3f); + + if (use_render_params && part->child_nbr && part->ren_child_nbr) + totparent *= (float)part->child_nbr / (float)part->ren_child_nbr; + + /* hard limit, workaround for it being ignored above */ + if (sim->psys->totpart < totparent) { + totparent = sim->psys->totpart; + } + + tree = BLI_kdtree_3d_new(totparent); + + for (p = 0, cpa = sim->psys->child; p < totparent; p++, cpa++) { + psys_particle_on_emitter( + sim->psmd, from, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, co, 0, 0, 0, orco); + + /* Check if particle doesn't exist because of texture influence. Insert only existing particles into kdtree. */ + get_cpa_texture(sim->psmd->mesh_final, + psys, + part, + psys->particles + cpa->pa[0], + p, + cpa->num, + cpa->fuv, + orco, + &ptex, + PAMAP_DENS | PAMAP_CHILD, + psys->cfra); + + if (ptex.exist >= psys_frand(psys, p + 24)) { + BLI_kdtree_3d_insert(tree, p, orco); + } + } + + BLI_kdtree_3d_balance(tree); + + for (; p < totchild; p++, cpa++) { + psys_particle_on_emitter( + sim->psmd, from, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, co, 0, 0, 0, orco); + cpa->parent = BLI_kdtree_3d_find_nearest(tree, orco, NULL); + } + + BLI_kdtree_3d_free(tree); } -static bool psys_thread_context_init_path( - ParticleThreadContext *ctx, ParticleSimulationData *sim, Scene *scene, - float cfra, const bool editupdate, const bool use_render_params) +static bool psys_thread_context_init_path(ParticleThreadContext *ctx, + ParticleSimulationData *sim, + Scene *scene, + float cfra, + const bool editupdate, + const bool use_render_params) { - ParticleSystem *psys = sim->psys; - ParticleSettings *part = psys->part; - int totparent = 0, between = 0; - int segments = 1 << part->draw_step; - int totchild = psys->totchild; - - psys_thread_context_init(ctx, sim); - - /*---start figuring out what is actually wanted---*/ - if (psys_in_edit_mode(sim->depsgraph, psys)) { - ParticleEditSettings *pset = &scene->toolsettings->particle; - - if ((use_render_params == 0) && (psys_orig_edit_get(psys) == NULL || pset->flag & PE_DRAW_PART) == 0) - totchild = 0; - - segments = 1 << pset->draw_step; - } - - if (totchild && part->childtype == PART_CHILD_FACES) { - totparent = (int)(totchild * part->parents * 0.3f); - - if (use_render_params && part->child_nbr && part->ren_child_nbr) - totparent *= (float)part->child_nbr / (float)part->ren_child_nbr; - - /* part->parents could still be 0 so we can't test with totparent */ - between = 1; - } - - if (use_render_params) - segments = 1 << part->ren_step; - else { - totchild = (int)((float)totchild * (float)part->disp / 100.0f); - totparent = MIN2(totparent, totchild); - } - - if (totchild == 0) - return false; - - /* fill context values */ - ctx->between = between; - ctx->segments = segments; - if (ELEM(part->kink, PART_KINK_SPIRAL)) - ctx->extra_segments = max_ii(part->kink_extra_steps, 1); - else - ctx->extra_segments = 0; - ctx->totchild = totchild; - ctx->totparent = totparent; - ctx->parent_pass = 0; - ctx->cfra = cfra; - ctx->editupdate = editupdate; - - psys->lattice_deform_data = psys_create_lattice_deform_data(&ctx->sim); - - /* cache all relevant vertex groups if they exist */ - ctx->vg_length = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_LENGTH); - ctx->vg_clump = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_CLUMP); - ctx->vg_kink = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_KINK); - ctx->vg_rough1 = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGH1); - ctx->vg_rough2 = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGH2); - ctx->vg_roughe = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGHE); - ctx->vg_twist = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_TWIST); - if (psys->part->flag & PART_CHILD_EFFECT) - ctx->vg_effector = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_EFFECTOR); - - /* prepare curvemapping tables */ - if ((part->child_flag & PART_CHILD_USE_CLUMP_CURVE) && part->clumpcurve) { - ctx->clumpcurve = curvemapping_copy(part->clumpcurve); - curvemapping_changed_all(ctx->clumpcurve); - } - else { - ctx->clumpcurve = NULL; - } - if ((part->child_flag & PART_CHILD_USE_ROUGH_CURVE) && part->roughcurve) { - ctx->roughcurve = curvemapping_copy(part->roughcurve); - curvemapping_changed_all(ctx->roughcurve); - } - else { - ctx->roughcurve = NULL; - } - if ((part->child_flag & PART_CHILD_USE_TWIST_CURVE) && part->twistcurve) { - ctx->twistcurve = curvemapping_copy(part->twistcurve); - curvemapping_changed_all(ctx->twistcurve); - } - else { - ctx->twistcurve = NULL; - } - - return true; + ParticleSystem *psys = sim->psys; + ParticleSettings *part = psys->part; + int totparent = 0, between = 0; + int segments = 1 << part->draw_step; + int totchild = psys->totchild; + + psys_thread_context_init(ctx, sim); + + /*---start figuring out what is actually wanted---*/ + if (psys_in_edit_mode(sim->depsgraph, psys)) { + ParticleEditSettings *pset = &scene->toolsettings->particle; + + if ((use_render_params == 0) && + (psys_orig_edit_get(psys) == NULL || pset->flag & PE_DRAW_PART) == 0) + totchild = 0; + + segments = 1 << pset->draw_step; + } + + if (totchild && part->childtype == PART_CHILD_FACES) { + totparent = (int)(totchild * part->parents * 0.3f); + + if (use_render_params && part->child_nbr && part->ren_child_nbr) + totparent *= (float)part->child_nbr / (float)part->ren_child_nbr; + + /* part->parents could still be 0 so we can't test with totparent */ + between = 1; + } + + if (use_render_params) + segments = 1 << part->ren_step; + else { + totchild = (int)((float)totchild * (float)part->disp / 100.0f); + totparent = MIN2(totparent, totchild); + } + + if (totchild == 0) + return false; + + /* fill context values */ + ctx->between = between; + ctx->segments = segments; + if (ELEM(part->kink, PART_KINK_SPIRAL)) + ctx->extra_segments = max_ii(part->kink_extra_steps, 1); + else + ctx->extra_segments = 0; + ctx->totchild = totchild; + ctx->totparent = totparent; + ctx->parent_pass = 0; + ctx->cfra = cfra; + ctx->editupdate = editupdate; + + psys->lattice_deform_data = psys_create_lattice_deform_data(&ctx->sim); + + /* cache all relevant vertex groups if they exist */ + ctx->vg_length = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_LENGTH); + ctx->vg_clump = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_CLUMP); + ctx->vg_kink = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_KINK); + ctx->vg_rough1 = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGH1); + ctx->vg_rough2 = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGH2); + ctx->vg_roughe = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_ROUGHE); + ctx->vg_twist = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_TWIST); + if (psys->part->flag & PART_CHILD_EFFECT) + ctx->vg_effector = psys_cache_vgroup(ctx->mesh, psys, PSYS_VG_EFFECTOR); + + /* prepare curvemapping tables */ + if ((part->child_flag & PART_CHILD_USE_CLUMP_CURVE) && part->clumpcurve) { + ctx->clumpcurve = curvemapping_copy(part->clumpcurve); + curvemapping_changed_all(ctx->clumpcurve); + } + else { + ctx->clumpcurve = NULL; + } + if ((part->child_flag & PART_CHILD_USE_ROUGH_CURVE) && part->roughcurve) { + ctx->roughcurve = curvemapping_copy(part->roughcurve); + curvemapping_changed_all(ctx->roughcurve); + } + else { + ctx->roughcurve = NULL; + } + if ((part->child_flag & PART_CHILD_USE_TWIST_CURVE) && part->twistcurve) { + ctx->twistcurve = curvemapping_copy(part->twistcurve); + curvemapping_changed_all(ctx->twistcurve); + } + else { + ctx->twistcurve = NULL; + } + + return true; } static void psys_task_init_path(ParticleTask *task, ParticleSimulationData *sim) { - /* init random number generator */ - int seed = 31415926 + sim->psys->seed; + /* init random number generator */ + int seed = 31415926 + sim->psys->seed; - task->rng_path = BLI_rng_new(seed); + task->rng_path = BLI_rng_new(seed); } /* note: this function must be thread safe, except for branching! */ -static void psys_thread_create_path(ParticleTask *task, struct ChildParticle *cpa, ParticleCacheKey *child_keys, int i) +static void psys_thread_create_path(ParticleTask *task, + struct ChildParticle *cpa, + ParticleCacheKey *child_keys, + int i) { - ParticleThreadContext *ctx = task->ctx; - Object *ob = ctx->sim.ob; - ParticleSystem *psys = ctx->sim.psys; - ParticleSettings *part = psys->part; - ParticleCacheKey **cache = psys->childcache; - PTCacheEdit *edit = psys_orig_edit_get(psys); - ParticleCacheKey **pcache = psys_in_edit_mode(ctx->sim.depsgraph, psys) && edit ? edit->pathcache : psys->pathcache; - ParticleCacheKey *child, *key[4]; - ParticleTexture ptex; - float *cpa_fuv = 0, *par_rot = 0, rot[4]; - float orco[3], hairmat[4][4], dvec[3], off1[4][3], off2[4][3]; - float eff_length, eff_vec[3], weight[4]; - int k, cpa_num; - short cpa_from; - - if (!pcache) - return; - - if (ctx->between) { - ParticleData *pa = psys->particles + cpa->pa[0]; - int w, needupdate; - float foffset, wsum = 0.f; - float co[3]; - float p_min = part->parting_min; - float p_max = part->parting_max; - /* Virtual parents don't work nicely with parting. */ - float p_fac = part->parents > 0.f ? 0.f : part->parting_fac; - - if (ctx->editupdate) { - needupdate = 0; - w = 0; - while (w < 4 && cpa->pa[w] >= 0) { - if (edit->points[cpa->pa[w]].flag & PEP_EDIT_RECALC) { - needupdate = 1; - break; - } - w++; - } - - if (!needupdate) - return; - else - memset(child_keys, 0, sizeof(*child_keys) * (ctx->segments + 1)); - } - - /* get parent paths */ - for (w = 0; w < 4; w++) { - if (cpa->pa[w] >= 0) { - key[w] = pcache[cpa->pa[w]]; - weight[w] = cpa->w[w]; - } - else { - key[w] = pcache[0]; - weight[w] = 0.f; - } - } - - /* modify weights to create parting */ - if (p_fac > 0.f) { - const ParticleCacheKey *key_0_last = pcache_key_segment_endpoint_safe(key[0]); - for (w = 0; w < 4; w++) { - if (w && (weight[w] > 0.f)) { - const ParticleCacheKey *key_w_last = pcache_key_segment_endpoint_safe(key[w]); - float d; - if (part->flag & PART_CHILD_LONG_HAIR) { - /* For long hair use tip distance/root distance as parting factor instead of root to tip angle. */ - float d1 = len_v3v3(key[0]->co, key[w]->co); - float d2 = len_v3v3(key_0_last->co, key_w_last->co); - - d = d1 > 0.f ? d2 / d1 - 1.f : 10000.f; - } - else { - float v1[3], v2[3]; - sub_v3_v3v3(v1, key_0_last->co, key[0]->co); - sub_v3_v3v3(v2, key_w_last->co, key[w]->co); - normalize_v3(v1); - normalize_v3(v2); - - d = RAD2DEGF(saacos(dot_v3v3(v1, v2))); - } - - if (p_max > p_min) - d = (d - p_min) / (p_max - p_min); - else - d = (d - p_min) <= 0.f ? 0.f : 1.f; - - CLAMP(d, 0.f, 1.f); - - if (d > 0.f) - weight[w] *= (1.f - d); - } - wsum += weight[w]; - } - for (w = 0; w < 4; w++) - weight[w] /= wsum; - - interp_v4_v4v4(weight, cpa->w, weight, p_fac); - } - - /* get the original coordinates (orco) for texture usage */ - cpa_num = cpa->num; - - foffset = cpa->foffset; - cpa_fuv = cpa->fuv; - cpa_from = PART_FROM_FACE; - - psys_particle_on_emitter(ctx->sim.psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa->fuv, foffset, co, 0, 0, 0, orco); - - mul_m4_v3(ob->obmat, co); - - for (w = 0; w < 4; w++) - sub_v3_v3v3(off1[w], co, key[w]->co); - - psys_mat_hair_to_global(ob, ctx->sim.psmd->mesh_final, psys->part->from, pa, hairmat); - } - else { - ParticleData *pa = psys->particles + cpa->parent; - float co[3]; - if (ctx->editupdate) { - if (!(edit->points[cpa->parent].flag & PEP_EDIT_RECALC)) - return; - - memset(child_keys, 0, sizeof(*child_keys) * (ctx->segments + 1)); - } - - /* get the parent path */ - key[0] = pcache[cpa->parent]; - - /* get the original coordinates (orco) for texture usage */ - cpa_from = part->from; - - /* - * NOTE: Should in theory be the same as: - * cpa_num = psys_particle_dm_face_lookup( - * ctx->sim.psmd->dm_final, - * ctx->sim.psmd->dm_deformed, - * pa->num, pa->fuv, - * NULL); - */ - cpa_num = (ELEM(pa->num_dmcache, DMCACHE_ISCHILD, DMCACHE_NOTFOUND)) - ? pa->num - : pa->num_dmcache; - - /* XXX hack to avoid messed up particle num and subsequent crash (#40733) */ - if (cpa_num > ctx->sim.psmd->mesh_final->totface) - cpa_num = 0; - cpa_fuv = pa->fuv; - - psys_particle_on_emitter(ctx->sim.psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa_fuv, pa->foffset, co, 0, 0, 0, orco); - - psys_mat_hair_to_global(ob, ctx->sim.psmd->mesh_final, psys->part->from, pa, hairmat); - } - - child_keys->segments = ctx->segments; - - /* get different child parameters from textures & vgroups */ - get_child_modifier_parameters(part, ctx, cpa, cpa_from, cpa_num, cpa_fuv, orco, &ptex); - - if (ptex.exist < psys_frand(psys, i + 24)) { - child_keys->segments = -1; - return; - } - - /* create the child path */ - for (k = 0, child = child_keys; k <= ctx->segments; k++, child++) { - if (ctx->between) { - int w = 0; - - zero_v3(child->co); - zero_v3(child->vel); - unit_qt(child->rot); - - for (w = 0; w < 4; w++) { - copy_v3_v3(off2[w], off1[w]); - - if (part->flag & PART_CHILD_LONG_HAIR) { - /* Use parent rotation (in addition to emission location) to determine child offset. */ - if (k) - mul_qt_v3((key[w] + k)->rot, off2[w]); - - /* Fade the effect of rotation for even lengths in the end */ - project_v3_v3v3(dvec, off2[w], (key[w] + k)->vel); - madd_v3_v3fl(off2[w], dvec, -(float)k / (float)ctx->segments); - } - - add_v3_v3(off2[w], (key[w] + k)->co); - } - - /* child position is the weighted sum of parent positions */ - interp_v3_v3v3v3v3(child->co, off2[0], off2[1], off2[2], off2[3], weight); - interp_v3_v3v3v3v3(child->vel, (key[0] + k)->vel, (key[1] + k)->vel, (key[2] + k)->vel, (key[3] + k)->vel, weight); - - copy_qt_qt(child->rot, (key[0] + k)->rot); - } - else { - if (k) { - mul_qt_qtqt(rot, (key[0] + k)->rot, key[0]->rot); - par_rot = rot; - } - else { - par_rot = key[0]->rot; - } - /* offset the child from the parent position */ - offset_child(cpa, (ParticleKey *)(key[0] + k), par_rot, (ParticleKey *)child, part->childflat, part->childrad); - } - - child->time = (float)k / (float)ctx->segments; - } - - /* apply effectors */ - if (part->flag & PART_CHILD_EFFECT) { - for (k = 0, child = child_keys; k <= ctx->segments; k++, child++) { - if (k) { - do_path_effectors(&ctx->sim, cpa->pa[0], child, k, ctx->segments, child_keys->co, ptex.effector, 0.0f, ctx->cfra, &eff_length, eff_vec); - } - else { - sub_v3_v3v3(eff_vec, (child + 1)->co, child->co); - eff_length = len_v3(eff_vec); - } - } - } - - { - ParticleData *pa = NULL; - ParticleCacheKey *par = NULL; - float par_co[3]; - float par_orco[3]; - - if (ctx->totparent) { - if (i >= ctx->totparent) { - pa = &psys->particles[cpa->parent]; - /* this is now threadsafe, virtual parents are calculated before rest of children */ - BLI_assert(cpa->parent < psys->totchildcache); - par = cache[cpa->parent]; - } - } - else if (cpa->parent >= 0) { - pa = &psys->particles[cpa->parent]; - par = pcache[cpa->parent]; - - /* If particle is unexisting, try to pick a viable parent from particles used for interpolation. */ - for (k = 0; k < 4 && pa && (pa->flag & PARS_UNEXIST); k++) { - if (cpa->pa[k] >= 0) { - pa = &psys->particles[cpa->pa[k]]; - par = pcache[cpa->pa[k]]; - } - } - - if (pa->flag & PARS_UNEXIST) pa = NULL; - } - - if (pa) { - ListBase modifiers; - BLI_listbase_clear(&modifiers); - - psys_particle_on_emitter(ctx->sim.psmd, part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, - par_co, NULL, NULL, NULL, par_orco); - - psys_apply_child_modifiers(ctx, &modifiers, cpa, &ptex, orco, hairmat, child_keys, par, par_orco); - } - else - zero_v3(par_orco); - } - - /* Hide virtual parents */ - if (i < ctx->totparent) - child_keys->segments = -1; + ParticleThreadContext *ctx = task->ctx; + Object *ob = ctx->sim.ob; + ParticleSystem *psys = ctx->sim.psys; + ParticleSettings *part = psys->part; + ParticleCacheKey **cache = psys->childcache; + PTCacheEdit *edit = psys_orig_edit_get(psys); + ParticleCacheKey **pcache = psys_in_edit_mode(ctx->sim.depsgraph, psys) && edit ? + edit->pathcache : + psys->pathcache; + ParticleCacheKey *child, *key[4]; + ParticleTexture ptex; + float *cpa_fuv = 0, *par_rot = 0, rot[4]; + float orco[3], hairmat[4][4], dvec[3], off1[4][3], off2[4][3]; + float eff_length, eff_vec[3], weight[4]; + int k, cpa_num; + short cpa_from; + + if (!pcache) + return; + + if (ctx->between) { + ParticleData *pa = psys->particles + cpa->pa[0]; + int w, needupdate; + float foffset, wsum = 0.f; + float co[3]; + float p_min = part->parting_min; + float p_max = part->parting_max; + /* Virtual parents don't work nicely with parting. */ + float p_fac = part->parents > 0.f ? 0.f : part->parting_fac; + + if (ctx->editupdate) { + needupdate = 0; + w = 0; + while (w < 4 && cpa->pa[w] >= 0) { + if (edit->points[cpa->pa[w]].flag & PEP_EDIT_RECALC) { + needupdate = 1; + break; + } + w++; + } + + if (!needupdate) + return; + else + memset(child_keys, 0, sizeof(*child_keys) * (ctx->segments + 1)); + } + + /* get parent paths */ + for (w = 0; w < 4; w++) { + if (cpa->pa[w] >= 0) { + key[w] = pcache[cpa->pa[w]]; + weight[w] = cpa->w[w]; + } + else { + key[w] = pcache[0]; + weight[w] = 0.f; + } + } + + /* modify weights to create parting */ + if (p_fac > 0.f) { + const ParticleCacheKey *key_0_last = pcache_key_segment_endpoint_safe(key[0]); + for (w = 0; w < 4; w++) { + if (w && (weight[w] > 0.f)) { + const ParticleCacheKey *key_w_last = pcache_key_segment_endpoint_safe(key[w]); + float d; + if (part->flag & PART_CHILD_LONG_HAIR) { + /* For long hair use tip distance/root distance as parting factor instead of root to tip angle. */ + float d1 = len_v3v3(key[0]->co, key[w]->co); + float d2 = len_v3v3(key_0_last->co, key_w_last->co); + + d = d1 > 0.f ? d2 / d1 - 1.f : 10000.f; + } + else { + float v1[3], v2[3]; + sub_v3_v3v3(v1, key_0_last->co, key[0]->co); + sub_v3_v3v3(v2, key_w_last->co, key[w]->co); + normalize_v3(v1); + normalize_v3(v2); + + d = RAD2DEGF(saacos(dot_v3v3(v1, v2))); + } + + if (p_max > p_min) + d = (d - p_min) / (p_max - p_min); + else + d = (d - p_min) <= 0.f ? 0.f : 1.f; + + CLAMP(d, 0.f, 1.f); + + if (d > 0.f) + weight[w] *= (1.f - d); + } + wsum += weight[w]; + } + for (w = 0; w < 4; w++) + weight[w] /= wsum; + + interp_v4_v4v4(weight, cpa->w, weight, p_fac); + } + + /* get the original coordinates (orco) for texture usage */ + cpa_num = cpa->num; + + foffset = cpa->foffset; + cpa_fuv = cpa->fuv; + cpa_from = PART_FROM_FACE; + + psys_particle_on_emitter( + ctx->sim.psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa->fuv, foffset, co, 0, 0, 0, orco); + + mul_m4_v3(ob->obmat, co); + + for (w = 0; w < 4; w++) + sub_v3_v3v3(off1[w], co, key[w]->co); + + psys_mat_hair_to_global(ob, ctx->sim.psmd->mesh_final, psys->part->from, pa, hairmat); + } + else { + ParticleData *pa = psys->particles + cpa->parent; + float co[3]; + if (ctx->editupdate) { + if (!(edit->points[cpa->parent].flag & PEP_EDIT_RECALC)) + return; + + memset(child_keys, 0, sizeof(*child_keys) * (ctx->segments + 1)); + } + + /* get the parent path */ + key[0] = pcache[cpa->parent]; + + /* get the original coordinates (orco) for texture usage */ + cpa_from = part->from; + + /* + * NOTE: Should in theory be the same as: + * cpa_num = psys_particle_dm_face_lookup( + * ctx->sim.psmd->dm_final, + * ctx->sim.psmd->dm_deformed, + * pa->num, pa->fuv, + * NULL); + */ + cpa_num = (ELEM(pa->num_dmcache, DMCACHE_ISCHILD, DMCACHE_NOTFOUND)) ? pa->num : + pa->num_dmcache; + + /* XXX hack to avoid messed up particle num and subsequent crash (#40733) */ + if (cpa_num > ctx->sim.psmd->mesh_final->totface) + cpa_num = 0; + cpa_fuv = pa->fuv; + + psys_particle_on_emitter(ctx->sim.psmd, + cpa_from, + cpa_num, + DMCACHE_ISCHILD, + cpa_fuv, + pa->foffset, + co, + 0, + 0, + 0, + orco); + + psys_mat_hair_to_global(ob, ctx->sim.psmd->mesh_final, psys->part->from, pa, hairmat); + } + + child_keys->segments = ctx->segments; + + /* get different child parameters from textures & vgroups */ + get_child_modifier_parameters(part, ctx, cpa, cpa_from, cpa_num, cpa_fuv, orco, &ptex); + + if (ptex.exist < psys_frand(psys, i + 24)) { + child_keys->segments = -1; + return; + } + + /* create the child path */ + for (k = 0, child = child_keys; k <= ctx->segments; k++, child++) { + if (ctx->between) { + int w = 0; + + zero_v3(child->co); + zero_v3(child->vel); + unit_qt(child->rot); + + for (w = 0; w < 4; w++) { + copy_v3_v3(off2[w], off1[w]); + + if (part->flag & PART_CHILD_LONG_HAIR) { + /* Use parent rotation (in addition to emission location) to determine child offset. */ + if (k) + mul_qt_v3((key[w] + k)->rot, off2[w]); + + /* Fade the effect of rotation for even lengths in the end */ + project_v3_v3v3(dvec, off2[w], (key[w] + k)->vel); + madd_v3_v3fl(off2[w], dvec, -(float)k / (float)ctx->segments); + } + + add_v3_v3(off2[w], (key[w] + k)->co); + } + + /* child position is the weighted sum of parent positions */ + interp_v3_v3v3v3v3(child->co, off2[0], off2[1], off2[2], off2[3], weight); + interp_v3_v3v3v3v3(child->vel, + (key[0] + k)->vel, + (key[1] + k)->vel, + (key[2] + k)->vel, + (key[3] + k)->vel, + weight); + + copy_qt_qt(child->rot, (key[0] + k)->rot); + } + else { + if (k) { + mul_qt_qtqt(rot, (key[0] + k)->rot, key[0]->rot); + par_rot = rot; + } + else { + par_rot = key[0]->rot; + } + /* offset the child from the parent position */ + offset_child(cpa, + (ParticleKey *)(key[0] + k), + par_rot, + (ParticleKey *)child, + part->childflat, + part->childrad); + } + + child->time = (float)k / (float)ctx->segments; + } + + /* apply effectors */ + if (part->flag & PART_CHILD_EFFECT) { + for (k = 0, child = child_keys; k <= ctx->segments; k++, child++) { + if (k) { + do_path_effectors(&ctx->sim, + cpa->pa[0], + child, + k, + ctx->segments, + child_keys->co, + ptex.effector, + 0.0f, + ctx->cfra, + &eff_length, + eff_vec); + } + else { + sub_v3_v3v3(eff_vec, (child + 1)->co, child->co); + eff_length = len_v3(eff_vec); + } + } + } + + { + ParticleData *pa = NULL; + ParticleCacheKey *par = NULL; + float par_co[3]; + float par_orco[3]; + + if (ctx->totparent) { + if (i >= ctx->totparent) { + pa = &psys->particles[cpa->parent]; + /* this is now threadsafe, virtual parents are calculated before rest of children */ + BLI_assert(cpa->parent < psys->totchildcache); + par = cache[cpa->parent]; + } + } + else if (cpa->parent >= 0) { + pa = &psys->particles[cpa->parent]; + par = pcache[cpa->parent]; + + /* If particle is unexisting, try to pick a viable parent from particles used for interpolation. */ + for (k = 0; k < 4 && pa && (pa->flag & PARS_UNEXIST); k++) { + if (cpa->pa[k] >= 0) { + pa = &psys->particles[cpa->pa[k]]; + par = pcache[cpa->pa[k]]; + } + } + + if (pa->flag & PARS_UNEXIST) + pa = NULL; + } + + if (pa) { + ListBase modifiers; + BLI_listbase_clear(&modifiers); + + psys_particle_on_emitter(ctx->sim.psmd, + part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + par_co, + NULL, + NULL, + NULL, + par_orco); + + psys_apply_child_modifiers( + ctx, &modifiers, cpa, &ptex, orco, hairmat, child_keys, par, par_orco); + } + else + zero_v3(par_orco); + } + + /* Hide virtual parents */ + if (i < ctx->totparent) + child_keys->segments = -1; } -static void exec_child_path_cache(TaskPool * __restrict UNUSED(pool), void *taskdata, int UNUSED(threadid)) +static void exec_child_path_cache(TaskPool *__restrict UNUSED(pool), + void *taskdata, + int UNUSED(threadid)) { - ParticleTask *task = taskdata; - ParticleThreadContext *ctx = task->ctx; - ParticleSystem *psys = ctx->sim.psys; - ParticleCacheKey **cache = psys->childcache; - ChildParticle *cpa; - int i; - - cpa = psys->child + task->begin; - for (i = task->begin; i < task->end; ++i, ++cpa) { - BLI_assert(i < psys->totchildcache); - psys_thread_create_path(task, cpa, cache[i], i); - } + ParticleTask *task = taskdata; + ParticleThreadContext *ctx = task->ctx; + ParticleSystem *psys = ctx->sim.psys; + ParticleCacheKey **cache = psys->childcache; + ChildParticle *cpa; + int i; + + cpa = psys->child + task->begin; + for (i = task->begin; i < task->end; ++i, ++cpa) { + BLI_assert(i < psys->totchildcache); + psys_thread_create_path(task, cpa, cache[i], i); + } } -void psys_cache_child_paths( - ParticleSimulationData *sim, float cfra, - const bool editupdate, const bool use_render_params) +void psys_cache_child_paths(ParticleSimulationData *sim, + float cfra, + const bool editupdate, + const bool use_render_params) { - TaskScheduler *task_scheduler; - TaskPool *task_pool; - ParticleThreadContext ctx; - ParticleTask *tasks_parent, *tasks_child; - int numtasks_parent, numtasks_child; - int i, totchild, totparent; - - if (sim->psys->flag & PSYS_GLOBAL_HAIR) - return; - - /* create a task pool for child path tasks */ - if (!psys_thread_context_init_path(&ctx, sim, sim->scene, cfra, editupdate, use_render_params)) - return; - - task_scheduler = BLI_task_scheduler_get(); - task_pool = BLI_task_pool_create(task_scheduler, &ctx); - totchild = ctx.totchild; - totparent = ctx.totparent; - - if (editupdate && sim->psys->childcache && totchild == sim->psys->totchildcache) { - /* just overwrite the existing cache */ - } - else { - /* clear out old and create new empty path cache */ - free_child_path_cache(sim->psys); - - sim->psys->childcache = psys_alloc_path_cache_buffers(&sim->psys->childcachebufs, totchild, ctx.segments + ctx.extra_segments + 1); - sim->psys->totchildcache = totchild; - } - - /* cache parent paths */ - ctx.parent_pass = 1; - psys_tasks_create(&ctx, 0, totparent, &tasks_parent, &numtasks_parent); - for (i = 0; i < numtasks_parent; ++i) { - ParticleTask *task = &tasks_parent[i]; - - psys_task_init_path(task, sim); - BLI_task_pool_push(task_pool, exec_child_path_cache, task, false, TASK_PRIORITY_LOW); - } - BLI_task_pool_work_and_wait(task_pool); - - /* cache child paths */ - ctx.parent_pass = 0; - psys_tasks_create(&ctx, totparent, totchild, &tasks_child, &numtasks_child); - for (i = 0; i < numtasks_child; ++i) { - ParticleTask *task = &tasks_child[i]; - - psys_task_init_path(task, sim); - BLI_task_pool_push(task_pool, exec_child_path_cache, task, false, TASK_PRIORITY_LOW); - } - BLI_task_pool_work_and_wait(task_pool); - - BLI_task_pool_free(task_pool); - - psys_tasks_free(tasks_parent, numtasks_parent); - psys_tasks_free(tasks_child, numtasks_child); - - psys_thread_context_free(&ctx); + TaskScheduler *task_scheduler; + TaskPool *task_pool; + ParticleThreadContext ctx; + ParticleTask *tasks_parent, *tasks_child; + int numtasks_parent, numtasks_child; + int i, totchild, totparent; + + if (sim->psys->flag & PSYS_GLOBAL_HAIR) + return; + + /* create a task pool for child path tasks */ + if (!psys_thread_context_init_path(&ctx, sim, sim->scene, cfra, editupdate, use_render_params)) + return; + + task_scheduler = BLI_task_scheduler_get(); + task_pool = BLI_task_pool_create(task_scheduler, &ctx); + totchild = ctx.totchild; + totparent = ctx.totparent; + + if (editupdate && sim->psys->childcache && totchild == sim->psys->totchildcache) { + /* just overwrite the existing cache */ + } + else { + /* clear out old and create new empty path cache */ + free_child_path_cache(sim->psys); + + sim->psys->childcache = psys_alloc_path_cache_buffers( + &sim->psys->childcachebufs, totchild, ctx.segments + ctx.extra_segments + 1); + sim->psys->totchildcache = totchild; + } + + /* cache parent paths */ + ctx.parent_pass = 1; + psys_tasks_create(&ctx, 0, totparent, &tasks_parent, &numtasks_parent); + for (i = 0; i < numtasks_parent; ++i) { + ParticleTask *task = &tasks_parent[i]; + + psys_task_init_path(task, sim); + BLI_task_pool_push(task_pool, exec_child_path_cache, task, false, TASK_PRIORITY_LOW); + } + BLI_task_pool_work_and_wait(task_pool); + + /* cache child paths */ + ctx.parent_pass = 0; + psys_tasks_create(&ctx, totparent, totchild, &tasks_child, &numtasks_child); + for (i = 0; i < numtasks_child; ++i) { + ParticleTask *task = &tasks_child[i]; + + psys_task_init_path(task, sim); + BLI_task_pool_push(task_pool, exec_child_path_cache, task, false, TASK_PRIORITY_LOW); + } + BLI_task_pool_work_and_wait(task_pool); + + BLI_task_pool_free(task_pool); + + psys_tasks_free(tasks_parent, numtasks_parent); + psys_tasks_free(tasks_child, numtasks_child); + + psys_thread_context_free(&ctx); } /* figure out incremental rotations along path starting from unit quat */ -static void cache_key_incremental_rotation(ParticleCacheKey *key0, ParticleCacheKey *key1, ParticleCacheKey *key2, float *prev_tangent, int i) +static void cache_key_incremental_rotation(ParticleCacheKey *key0, + ParticleCacheKey *key1, + ParticleCacheKey *key2, + float *prev_tangent, + int i) { - float cosangle, angle, tangent[3], normal[3], q[4]; - - switch (i) { - case 0: - /* start from second key */ - break; - case 1: - /* calculate initial tangent for incremental rotations */ - sub_v3_v3v3(prev_tangent, key0->co, key1->co); - normalize_v3(prev_tangent); - unit_qt(key1->rot); - break; - default: - sub_v3_v3v3(tangent, key0->co, key1->co); - normalize_v3(tangent); - - cosangle = dot_v3v3(tangent, prev_tangent); - - /* note we do the comparison on cosangle instead of - * angle, since floating point accuracy makes it give - * different results across platforms */ - if (cosangle > 0.999999f) { - copy_v4_v4(key1->rot, key2->rot); - } - else { - angle = saacos(cosangle); - cross_v3_v3v3(normal, prev_tangent, tangent); - axis_angle_to_quat(q, normal, angle); - mul_qt_qtqt(key1->rot, q, key2->rot); - } - - copy_v3_v3(prev_tangent, tangent); - } + float cosangle, angle, tangent[3], normal[3], q[4]; + + switch (i) { + case 0: + /* start from second key */ + break; + case 1: + /* calculate initial tangent for incremental rotations */ + sub_v3_v3v3(prev_tangent, key0->co, key1->co); + normalize_v3(prev_tangent); + unit_qt(key1->rot); + break; + default: + sub_v3_v3v3(tangent, key0->co, key1->co); + normalize_v3(tangent); + + cosangle = dot_v3v3(tangent, prev_tangent); + + /* note we do the comparison on cosangle instead of + * angle, since floating point accuracy makes it give + * different results across platforms */ + if (cosangle > 0.999999f) { + copy_v4_v4(key1->rot, key2->rot); + } + else { + angle = saacos(cosangle); + cross_v3_v3v3(normal, prev_tangent, tangent); + axis_angle_to_quat(q, normal, angle); + mul_qt_qtqt(key1->rot, q, key2->rot); + } + + copy_v3_v3(prev_tangent, tangent); + } } /** @@ -2458,827 +2712,854 @@ static void cache_key_incremental_rotation(ParticleCacheKey *key0, ParticleCache * - Cached path data is also used to determine cut position for the editmode tool. */ void psys_cache_paths(ParticleSimulationData *sim, float cfra, const bool use_render_params) { - PARTICLE_PSMD; - ParticleEditSettings *pset = &sim->scene->toolsettings->particle; - ParticleSystem *psys = sim->psys; - ParticleSettings *part = psys->part; - ParticleCacheKey *ca, **cache; - - Mesh *hair_mesh = (psys->part->type == PART_HAIR && psys->flag & PSYS_HAIR_DYNAMICS) ? psys->hair_out_mesh : NULL; - - ParticleKey result; - - Material *ma; - ParticleInterpolationData pind; - ParticleTexture ptex; - - PARTICLE_P; - - float birthtime = 0.0, dietime = 0.0; - float t, time = 0.0, dfra = 1.0 /* , frs_sec = sim->scene->r.frs_sec*/ /*UNUSED*/; - float col[4] = {0.5f, 0.5f, 0.5f, 1.0f}; - float prev_tangent[3] = {0.0f, 0.0f, 0.0f}, hairmat[4][4]; - float rotmat[3][3]; - int k; - int segments = (int)pow(2.0, (double)((use_render_params) ? part->ren_step : part->draw_step)); - int totpart = psys->totpart; - float length, vec[3]; - float *vg_effector = NULL; - float *vg_length = NULL, pa_length = 1.0f; - int keyed, baked; - - /* we don't have anything valid to create paths from so let's quit here */ - if ((psys->flag & PSYS_HAIR_DONE || psys->flag & PSYS_KEYED || psys->pointcache) == 0) - return; - - if (psys_in_edit_mode(sim->depsgraph, psys)) - if ((psys->edit == NULL || pset->flag & PE_DRAW_PART) == 0) - return; - - keyed = psys->flag & PSYS_KEYED; - baked = psys->pointcache->mem_cache.first && psys->part->type != PART_HAIR; - - /* clear out old and create new empty path cache */ - psys_free_path_cache(psys, psys->edit); - cache = psys->pathcache = psys_alloc_path_cache_buffers(&psys->pathcachebufs, totpart, segments + 1); - - psys->lattice_deform_data = psys_create_lattice_deform_data(sim); - ma = give_current_material(sim->ob, psys->part->omat); - if (ma && (psys->part->draw_col == PART_DRAW_COL_MAT)) - copy_v3_v3(col, &ma->r); - - if ((psys->flag & PSYS_GLOBAL_HAIR) == 0) { - if ((psys->part->flag & PART_CHILD_EFFECT) == 0) - vg_effector = psys_cache_vgroup(psmd->mesh_final, psys, PSYS_VG_EFFECTOR); - - if (!psys->totchild) - vg_length = psys_cache_vgroup(psmd->mesh_final, psys, PSYS_VG_LENGTH); - } - - /* ensure we have tessfaces to be used for mapping */ - if (part->from != PART_FROM_VERT) { - BKE_mesh_tessface_ensure(psmd->mesh_final); - } - - /*---first main loop: create all actual particles' paths---*/ - LOOP_PARTICLES { - if (!psys->totchild) { - psys_get_texture(sim, pa, &ptex, PAMAP_LENGTH, 0.f); - pa_length = ptex.length * (1.0f - part->randlength * psys_frand(psys, psys->seed + p)); - if (vg_length) - pa_length *= psys_particle_value_from_verts(psmd->mesh_final, part->from, pa, vg_length); - } - - pind.keyed = keyed; - pind.cache = baked ? psys->pointcache : NULL; - pind.epoint = NULL; - pind.bspline = (psys->part->flag & PART_HAIR_BSPLINE); - pind.mesh = hair_mesh; - - memset(cache[p], 0, sizeof(*cache[p]) * (segments + 1)); - - cache[p]->segments = segments; - - /*--get the first data points--*/ - init_particle_interpolation(sim->ob, sim->psys, pa, &pind); - - /* hairmat is needed for for non-hair particle too so we get proper rotations */ - psys_mat_hair_to_global(sim->ob, psmd->mesh_final, psys->part->from, pa, hairmat); - copy_v3_v3(rotmat[0], hairmat[2]); - copy_v3_v3(rotmat[1], hairmat[1]); - copy_v3_v3(rotmat[2], hairmat[0]); - - if (part->draw & PART_ABS_PATH_TIME) { - birthtime = MAX2(pind.birthtime, part->path_start); - dietime = MIN2(pind.dietime, part->path_end); - } - else { - float tb = pind.birthtime; - birthtime = tb + part->path_start * (pind.dietime - tb); - dietime = tb + part->path_end * (pind.dietime - tb); - } - - if (birthtime >= dietime) { - cache[p]->segments = -1; - continue; - } - - dietime = birthtime + pa_length * (dietime - birthtime); - - /*--interpolate actual path from data points--*/ - for (k = 0, ca = cache[p]; k <= segments; k++, ca++) { - time = (float)k / (float)segments; - t = birthtime + time * (dietime - birthtime); - result.time = -t; - do_particle_interpolation(psys, p, pa, t, &pind, &result); - copy_v3_v3(ca->co, result.co); - - /* dynamic hair is in object space */ - /* keyed and baked are already in global space */ - if (hair_mesh) - mul_m4_v3(sim->ob->obmat, ca->co); - else if (!keyed && !baked && !(psys->flag & PSYS_GLOBAL_HAIR)) - mul_m4_v3(hairmat, ca->co); - - copy_v3_v3(ca->col, col); - } - - if (part->type == PART_HAIR) { - HairKey *hkey; - - for (k = 0, hkey = pa->hair; k < pa->totkey; ++k, ++hkey) { - mul_v3_m4v3(hkey->world_co, hairmat, hkey->co); - } - } - - /*--modify paths and calculate rotation & velocity--*/ - - if (!(psys->flag & PSYS_GLOBAL_HAIR)) { - /* apply effectors */ - if ((psys->part->flag & PART_CHILD_EFFECT) == 0) { - float effector = 1.0f; - if (vg_effector) - effector *= psys_particle_value_from_verts(psmd->mesh_final, psys->part->from, pa, vg_effector); - - sub_v3_v3v3(vec, (cache[p] + 1)->co, cache[p]->co); - length = len_v3(vec); - - for (k = 1, ca = cache[p] + 1; k <= segments; k++, ca++) - do_path_effectors(sim, p, ca, k, segments, cache[p]->co, effector, dfra, cfra, &length, vec); - } - - /* apply guide curves to path data */ - if (sim->psys->effectors && (psys->part->flag & PART_CHILD_EFFECT) == 0) { - for (k = 0, ca = cache[p]; k <= segments; k++, ca++) - /* ca is safe to cast, since only co and vel are used */ - do_guides(sim->depsgraph, sim->psys->part, sim->psys->effectors, (ParticleKey *)ca, p, (float)k / (float)segments); - } - - /* lattices have to be calculated separately to avoid mixups between effector calculations */ - if (psys->lattice_deform_data) { - for (k = 0, ca = cache[p]; k <= segments; k++, ca++) - calc_latt_deform(psys->lattice_deform_data, ca->co, psys->lattice_strength); - } - } - - /* finally do rotation & velocity */ - for (k = 1, ca = cache[p] + 1; k <= segments; k++, ca++) { - cache_key_incremental_rotation(ca, ca - 1, ca - 2, prev_tangent, k); - - if (k == segments) - copy_qt_qt(ca->rot, (ca - 1)->rot); - - /* set velocity */ - sub_v3_v3v3(ca->vel, ca->co, (ca - 1)->co); - - if (k == 1) - copy_v3_v3((ca - 1)->vel, ca->vel); - - ca->time = (float)k / (float)segments; - } - /* First rotation is based on emitting face orientation. - * This is way better than having flipping rotations resulting - * from using a global axis as a rotation pole (vec_to_quat()). - * It's not an ideal solution though since it disregards the - * initial tangent, but taking that in to account will allow - * the possibility of flipping again. -jahka - */ - mat3_to_quat_is_ok(cache[p]->rot, rotmat); - } - - psys->totcached = totpart; - - if (psys->lattice_deform_data) { - end_latt_deform(psys->lattice_deform_data); - psys->lattice_deform_data = NULL; - } - - if (vg_effector) - MEM_freeN(vg_effector); - - if (vg_length) - MEM_freeN(vg_length); + PARTICLE_PSMD; + ParticleEditSettings *pset = &sim->scene->toolsettings->particle; + ParticleSystem *psys = sim->psys; + ParticleSettings *part = psys->part; + ParticleCacheKey *ca, **cache; + + Mesh *hair_mesh = (psys->part->type == PART_HAIR && psys->flag & PSYS_HAIR_DYNAMICS) ? + psys->hair_out_mesh : + NULL; + + ParticleKey result; + + Material *ma; + ParticleInterpolationData pind; + ParticleTexture ptex; + + PARTICLE_P; + + float birthtime = 0.0, dietime = 0.0; + float t, time = 0.0, dfra = 1.0 /* , frs_sec = sim->scene->r.frs_sec*/ /*UNUSED*/; + float col[4] = {0.5f, 0.5f, 0.5f, 1.0f}; + float prev_tangent[3] = {0.0f, 0.0f, 0.0f}, hairmat[4][4]; + float rotmat[3][3]; + int k; + int segments = (int)pow(2.0, (double)((use_render_params) ? part->ren_step : part->draw_step)); + int totpart = psys->totpart; + float length, vec[3]; + float *vg_effector = NULL; + float *vg_length = NULL, pa_length = 1.0f; + int keyed, baked; + + /* we don't have anything valid to create paths from so let's quit here */ + if ((psys->flag & PSYS_HAIR_DONE || psys->flag & PSYS_KEYED || psys->pointcache) == 0) + return; + + if (psys_in_edit_mode(sim->depsgraph, psys)) + if ((psys->edit == NULL || pset->flag & PE_DRAW_PART) == 0) + return; + + keyed = psys->flag & PSYS_KEYED; + baked = psys->pointcache->mem_cache.first && psys->part->type != PART_HAIR; + + /* clear out old and create new empty path cache */ + psys_free_path_cache(psys, psys->edit); + cache = psys->pathcache = psys_alloc_path_cache_buffers( + &psys->pathcachebufs, totpart, segments + 1); + + psys->lattice_deform_data = psys_create_lattice_deform_data(sim); + ma = give_current_material(sim->ob, psys->part->omat); + if (ma && (psys->part->draw_col == PART_DRAW_COL_MAT)) + copy_v3_v3(col, &ma->r); + + if ((psys->flag & PSYS_GLOBAL_HAIR) == 0) { + if ((psys->part->flag & PART_CHILD_EFFECT) == 0) + vg_effector = psys_cache_vgroup(psmd->mesh_final, psys, PSYS_VG_EFFECTOR); + + if (!psys->totchild) + vg_length = psys_cache_vgroup(psmd->mesh_final, psys, PSYS_VG_LENGTH); + } + + /* ensure we have tessfaces to be used for mapping */ + if (part->from != PART_FROM_VERT) { + BKE_mesh_tessface_ensure(psmd->mesh_final); + } + + /*---first main loop: create all actual particles' paths---*/ + LOOP_PARTICLES + { + if (!psys->totchild) { + psys_get_texture(sim, pa, &ptex, PAMAP_LENGTH, 0.f); + pa_length = ptex.length * (1.0f - part->randlength * psys_frand(psys, psys->seed + p)); + if (vg_length) + pa_length *= psys_particle_value_from_verts(psmd->mesh_final, part->from, pa, vg_length); + } + + pind.keyed = keyed; + pind.cache = baked ? psys->pointcache : NULL; + pind.epoint = NULL; + pind.bspline = (psys->part->flag & PART_HAIR_BSPLINE); + pind.mesh = hair_mesh; + + memset(cache[p], 0, sizeof(*cache[p]) * (segments + 1)); + + cache[p]->segments = segments; + + /*--get the first data points--*/ + init_particle_interpolation(sim->ob, sim->psys, pa, &pind); + + /* hairmat is needed for for non-hair particle too so we get proper rotations */ + psys_mat_hair_to_global(sim->ob, psmd->mesh_final, psys->part->from, pa, hairmat); + copy_v3_v3(rotmat[0], hairmat[2]); + copy_v3_v3(rotmat[1], hairmat[1]); + copy_v3_v3(rotmat[2], hairmat[0]); + + if (part->draw & PART_ABS_PATH_TIME) { + birthtime = MAX2(pind.birthtime, part->path_start); + dietime = MIN2(pind.dietime, part->path_end); + } + else { + float tb = pind.birthtime; + birthtime = tb + part->path_start * (pind.dietime - tb); + dietime = tb + part->path_end * (pind.dietime - tb); + } + + if (birthtime >= dietime) { + cache[p]->segments = -1; + continue; + } + + dietime = birthtime + pa_length * (dietime - birthtime); + + /*--interpolate actual path from data points--*/ + for (k = 0, ca = cache[p]; k <= segments; k++, ca++) { + time = (float)k / (float)segments; + t = birthtime + time * (dietime - birthtime); + result.time = -t; + do_particle_interpolation(psys, p, pa, t, &pind, &result); + copy_v3_v3(ca->co, result.co); + + /* dynamic hair is in object space */ + /* keyed and baked are already in global space */ + if (hair_mesh) + mul_m4_v3(sim->ob->obmat, ca->co); + else if (!keyed && !baked && !(psys->flag & PSYS_GLOBAL_HAIR)) + mul_m4_v3(hairmat, ca->co); + + copy_v3_v3(ca->col, col); + } + + if (part->type == PART_HAIR) { + HairKey *hkey; + + for (k = 0, hkey = pa->hair; k < pa->totkey; ++k, ++hkey) { + mul_v3_m4v3(hkey->world_co, hairmat, hkey->co); + } + } + + /*--modify paths and calculate rotation & velocity--*/ + + if (!(psys->flag & PSYS_GLOBAL_HAIR)) { + /* apply effectors */ + if ((psys->part->flag & PART_CHILD_EFFECT) == 0) { + float effector = 1.0f; + if (vg_effector) + effector *= psys_particle_value_from_verts( + psmd->mesh_final, psys->part->from, pa, vg_effector); + + sub_v3_v3v3(vec, (cache[p] + 1)->co, cache[p]->co); + length = len_v3(vec); + + for (k = 1, ca = cache[p] + 1; k <= segments; k++, ca++) + do_path_effectors( + sim, p, ca, k, segments, cache[p]->co, effector, dfra, cfra, &length, vec); + } + + /* apply guide curves to path data */ + if (sim->psys->effectors && (psys->part->flag & PART_CHILD_EFFECT) == 0) { + for (k = 0, ca = cache[p]; k <= segments; k++, ca++) + /* ca is safe to cast, since only co and vel are used */ + do_guides(sim->depsgraph, + sim->psys->part, + sim->psys->effectors, + (ParticleKey *)ca, + p, + (float)k / (float)segments); + } + + /* lattices have to be calculated separately to avoid mixups between effector calculations */ + if (psys->lattice_deform_data) { + for (k = 0, ca = cache[p]; k <= segments; k++, ca++) + calc_latt_deform(psys->lattice_deform_data, ca->co, psys->lattice_strength); + } + } + + /* finally do rotation & velocity */ + for (k = 1, ca = cache[p] + 1; k <= segments; k++, ca++) { + cache_key_incremental_rotation(ca, ca - 1, ca - 2, prev_tangent, k); + + if (k == segments) + copy_qt_qt(ca->rot, (ca - 1)->rot); + + /* set velocity */ + sub_v3_v3v3(ca->vel, ca->co, (ca - 1)->co); + + if (k == 1) + copy_v3_v3((ca - 1)->vel, ca->vel); + + ca->time = (float)k / (float)segments; + } + /* First rotation is based on emitting face orientation. + * This is way better than having flipping rotations resulting + * from using a global axis as a rotation pole (vec_to_quat()). + * It's not an ideal solution though since it disregards the + * initial tangent, but taking that in to account will allow + * the possibility of flipping again. -jahka + */ + mat3_to_quat_is_ok(cache[p]->rot, rotmat); + } + + psys->totcached = totpart; + + if (psys->lattice_deform_data) { + end_latt_deform(psys->lattice_deform_data); + psys->lattice_deform_data = NULL; + } + + if (vg_effector) + MEM_freeN(vg_effector); + + if (vg_length) + MEM_freeN(vg_length); } typedef struct CacheEditrPathsIterData { - Object *object; - PTCacheEdit *edit; - ParticleSystemModifierData *psmd; - ParticleData *pa; - int segments; - bool use_weight; - float sel_col[3]; - float nosel_col[3]; + Object *object; + PTCacheEdit *edit; + ParticleSystemModifierData *psmd; + ParticleData *pa; + int segments; + bool use_weight; + float sel_col[3]; + float nosel_col[3]; } CacheEditrPathsIterData; -static void psys_cache_edit_paths_iter( - void *__restrict iter_data_v, - const int iter, - const ParallelRangeTLS *__restrict UNUSED(tls)) +static void psys_cache_edit_paths_iter(void *__restrict iter_data_v, + const int iter, + const ParallelRangeTLS *__restrict UNUSED(tls)) { - CacheEditrPathsIterData *iter_data = (CacheEditrPathsIterData *)iter_data_v; - PTCacheEdit *edit = iter_data->edit; - PTCacheEditPoint *point = &edit->points[iter]; - if (edit->totcached && !(point->flag & PEP_EDIT_RECALC)) { - return; - } - if (point->totkey == 0) { - return; - } - Object *ob = iter_data->object; - ParticleSystem *psys = edit->psys; - ParticleCacheKey **cache = edit->pathcache; - ParticleSystemModifierData *psmd = iter_data->psmd; - ParticleData *pa = iter_data->pa ? iter_data->pa + iter : NULL; - PTCacheEditKey *ekey = point->keys; - const int segments = iter_data->segments; - const bool use_weight = iter_data->use_weight; - - float birthtime = 0.0f, dietime = 0.0f; - float hairmat[4][4], rotmat[3][3], prev_tangent[3] = {0.0f, 0.0f, 0.0f}; - - ParticleInterpolationData pind; - pind.keyed = 0; - pind.cache = NULL; - pind.epoint = point; - pind.bspline = psys ? (psys->part->flag & PART_HAIR_BSPLINE) : 0; - pind.mesh = NULL; - - /* should init_particle_interpolation set this ? */ - if (use_weight) { - pind.hkey[0] = NULL; - /* pa != NULL since the weight brush is only available for hair */ - pind.hkey[0] = pa->hair; - pind.hkey[1] = pa->hair + 1; - } - - memset(cache[iter], 0, sizeof(*cache[iter]) * (segments + 1)); - - cache[iter]->segments = segments; - - /*--get the first data points--*/ - init_particle_interpolation(ob, psys, pa, &pind); - - if (psys) { - psys_mat_hair_to_global(ob, psmd->mesh_final, psys->part->from, pa, hairmat); - copy_v3_v3(rotmat[0], hairmat[2]); - copy_v3_v3(rotmat[1], hairmat[1]); - copy_v3_v3(rotmat[2], hairmat[0]); - } - - birthtime = pind.birthtime; - dietime = pind.dietime; - - if (birthtime >= dietime) { - cache[iter]->segments = -1; - return; - } - - /*--interpolate actual path from data points--*/ - ParticleCacheKey *ca; - int k; - float t, time = 0.0f, keytime = 0.0f; - for (k = 0, ca = cache[iter]; k <= segments; k++, ca++) { - time = (float)k / (float)segments; - t = birthtime + time * (dietime - birthtime); - ParticleKey result; - result.time = -t; - do_particle_interpolation(psys, iter, pa, t, &pind, &result); - copy_v3_v3(ca->co, result.co); - - /* non-hair points are already in global space */ - if (psys && !(psys->flag & PSYS_GLOBAL_HAIR)) { - mul_m4_v3(hairmat, ca->co); - - if (k) { - cache_key_incremental_rotation(ca, ca - 1, ca - 2, prev_tangent, k); - - if (k == segments) - copy_qt_qt(ca->rot, (ca - 1)->rot); - - /* set velocity */ - sub_v3_v3v3(ca->vel, ca->co, (ca - 1)->co); - - if (k == 1) - copy_v3_v3((ca - 1)->vel, ca->vel); - } - } - else { - ca->vel[0] = ca->vel[1] = 0.0f; - ca->vel[2] = 1.0f; - } - - /* selection coloring in edit mode */ - if (use_weight) { - if (k == 0) { - BKE_defvert_weight_to_rgb(ca->col, pind.hkey[1]->weight); - } - else { - /* warning: copied from 'do_particle_interpolation' (without 'mvert' array stepping) */ - float real_t; - if (result.time < 0.0f) { - real_t = -result.time; - } - else { - real_t = pind.hkey[0]->time + t * (pind.hkey[0][pa->totkey - 1].time - pind.hkey[0]->time); - } - - while (pind.hkey[1]->time < real_t) { - pind.hkey[1]++; - } - pind.hkey[0] = pind.hkey[1] - 1; - /* end copy */ - - - float w1[3], w2[3]; - keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); - - BKE_defvert_weight_to_rgb(w1, pind.hkey[0]->weight); - BKE_defvert_weight_to_rgb(w2, pind.hkey[1]->weight); - - interp_v3_v3v3(ca->col, w1, w2, keytime); - } - } - else { - if ((ekey + (pind.ekey[0] - point->keys))->flag & PEK_SELECT) { - if ((ekey + (pind.ekey[1] - point->keys))->flag & PEK_SELECT) { - copy_v3_v3(ca->col, iter_data->sel_col); - } - else { - keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); - interp_v3_v3v3(ca->col, iter_data->sel_col, iter_data->nosel_col, keytime); - } - } - else { - if ((ekey + (pind.ekey[1] - point->keys))->flag & PEK_SELECT) { - keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); - interp_v3_v3v3(ca->col, iter_data->nosel_col, iter_data->sel_col, keytime); - } - else { - copy_v3_v3(ca->col, iter_data->nosel_col); - } - } - } - - ca->time = t; - } - if (psys && !(psys->flag & PSYS_GLOBAL_HAIR)) { - /* First rotation is based on emitting face orientation. - * This is way better than having flipping rotations resulting - * from using a global axis as a rotation pole (vec_to_quat()). - * It's not an ideal solution though since it disregards the - * initial tangent, but taking that in to account will allow - * the possibility of flipping again. -jahka - */ - mat3_to_quat_is_ok(cache[iter]->rot, rotmat); - } + CacheEditrPathsIterData *iter_data = (CacheEditrPathsIterData *)iter_data_v; + PTCacheEdit *edit = iter_data->edit; + PTCacheEditPoint *point = &edit->points[iter]; + if (edit->totcached && !(point->flag & PEP_EDIT_RECALC)) { + return; + } + if (point->totkey == 0) { + return; + } + Object *ob = iter_data->object; + ParticleSystem *psys = edit->psys; + ParticleCacheKey **cache = edit->pathcache; + ParticleSystemModifierData *psmd = iter_data->psmd; + ParticleData *pa = iter_data->pa ? iter_data->pa + iter : NULL; + PTCacheEditKey *ekey = point->keys; + const int segments = iter_data->segments; + const bool use_weight = iter_data->use_weight; + + float birthtime = 0.0f, dietime = 0.0f; + float hairmat[4][4], rotmat[3][3], prev_tangent[3] = {0.0f, 0.0f, 0.0f}; + + ParticleInterpolationData pind; + pind.keyed = 0; + pind.cache = NULL; + pind.epoint = point; + pind.bspline = psys ? (psys->part->flag & PART_HAIR_BSPLINE) : 0; + pind.mesh = NULL; + + /* should init_particle_interpolation set this ? */ + if (use_weight) { + pind.hkey[0] = NULL; + /* pa != NULL since the weight brush is only available for hair */ + pind.hkey[0] = pa->hair; + pind.hkey[1] = pa->hair + 1; + } + + memset(cache[iter], 0, sizeof(*cache[iter]) * (segments + 1)); + + cache[iter]->segments = segments; + + /*--get the first data points--*/ + init_particle_interpolation(ob, psys, pa, &pind); + + if (psys) { + psys_mat_hair_to_global(ob, psmd->mesh_final, psys->part->from, pa, hairmat); + copy_v3_v3(rotmat[0], hairmat[2]); + copy_v3_v3(rotmat[1], hairmat[1]); + copy_v3_v3(rotmat[2], hairmat[0]); + } + + birthtime = pind.birthtime; + dietime = pind.dietime; + + if (birthtime >= dietime) { + cache[iter]->segments = -1; + return; + } + + /*--interpolate actual path from data points--*/ + ParticleCacheKey *ca; + int k; + float t, time = 0.0f, keytime = 0.0f; + for (k = 0, ca = cache[iter]; k <= segments; k++, ca++) { + time = (float)k / (float)segments; + t = birthtime + time * (dietime - birthtime); + ParticleKey result; + result.time = -t; + do_particle_interpolation(psys, iter, pa, t, &pind, &result); + copy_v3_v3(ca->co, result.co); + + /* non-hair points are already in global space */ + if (psys && !(psys->flag & PSYS_GLOBAL_HAIR)) { + mul_m4_v3(hairmat, ca->co); + + if (k) { + cache_key_incremental_rotation(ca, ca - 1, ca - 2, prev_tangent, k); + + if (k == segments) + copy_qt_qt(ca->rot, (ca - 1)->rot); + + /* set velocity */ + sub_v3_v3v3(ca->vel, ca->co, (ca - 1)->co); + + if (k == 1) + copy_v3_v3((ca - 1)->vel, ca->vel); + } + } + else { + ca->vel[0] = ca->vel[1] = 0.0f; + ca->vel[2] = 1.0f; + } + + /* selection coloring in edit mode */ + if (use_weight) { + if (k == 0) { + BKE_defvert_weight_to_rgb(ca->col, pind.hkey[1]->weight); + } + else { + /* warning: copied from 'do_particle_interpolation' (without 'mvert' array stepping) */ + float real_t; + if (result.time < 0.0f) { + real_t = -result.time; + } + else { + real_t = pind.hkey[0]->time + + t * (pind.hkey[0][pa->totkey - 1].time - pind.hkey[0]->time); + } + + while (pind.hkey[1]->time < real_t) { + pind.hkey[1]++; + } + pind.hkey[0] = pind.hkey[1] - 1; + /* end copy */ + + float w1[3], w2[3]; + keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); + + BKE_defvert_weight_to_rgb(w1, pind.hkey[0]->weight); + BKE_defvert_weight_to_rgb(w2, pind.hkey[1]->weight); + + interp_v3_v3v3(ca->col, w1, w2, keytime); + } + } + else { + if ((ekey + (pind.ekey[0] - point->keys))->flag & PEK_SELECT) { + if ((ekey + (pind.ekey[1] - point->keys))->flag & PEK_SELECT) { + copy_v3_v3(ca->col, iter_data->sel_col); + } + else { + keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); + interp_v3_v3v3(ca->col, iter_data->sel_col, iter_data->nosel_col, keytime); + } + } + else { + if ((ekey + (pind.ekey[1] - point->keys))->flag & PEK_SELECT) { + keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); + interp_v3_v3v3(ca->col, iter_data->nosel_col, iter_data->sel_col, keytime); + } + else { + copy_v3_v3(ca->col, iter_data->nosel_col); + } + } + } + + ca->time = t; + } + if (psys && !(psys->flag & PSYS_GLOBAL_HAIR)) { + /* First rotation is based on emitting face orientation. + * This is way better than having flipping rotations resulting + * from using a global axis as a rotation pole (vec_to_quat()). + * It's not an ideal solution though since it disregards the + * initial tangent, but taking that in to account will allow + * the possibility of flipping again. -jahka + */ + mat3_to_quat_is_ok(cache[iter]->rot, rotmat); + } } -void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCacheEdit *edit, float cfra, const bool use_render_params) +void psys_cache_edit_paths(Depsgraph *depsgraph, + Scene *scene, + Object *ob, + PTCacheEdit *edit, + float cfra, + const bool use_render_params) { - ParticleCacheKey **cache = edit->pathcache; - ParticleEditSettings *pset = &scene->toolsettings->particle; - - ParticleSystem *psys = edit->psys; - - ParticleData *pa = psys ? psys->particles : NULL; - - int segments = 1 << pset->draw_step; - int totpart = edit->totpoint, recalc_set = 0; - - segments = MAX2(segments, 4); - - if (!cache || edit->totpoint != edit->totcached) { - /* Clear out old and create new empty path cache. */ - psys_free_path_cache(edit->psys, edit); - cache = edit->pathcache = psys_alloc_path_cache_buffers(&edit->pathcachebufs, totpart, segments + 1); - /* Set flag for update (child particles check this too). */ - int i; - PTCacheEditPoint *point; - for (i = 0, point = edit->points; i < totpart; i++, point++) { - point->flag |= PEP_EDIT_RECALC; - } - recalc_set = 1; - } - - const bool use_weight = (pset->brushtype == PE_BRUSH_WEIGHT) && (psys != NULL) && (psys->particles != NULL); - - CacheEditrPathsIterData iter_data; - iter_data.object = ob; - iter_data.edit = edit; - iter_data.psmd = edit->psmd_eval; - iter_data.pa = pa; - iter_data.segments = segments; - iter_data.use_weight = use_weight; - - if (use_weight) { - ; /* use weight painting colors now... */ - } - else { - iter_data.sel_col[0] = (float)edit->sel_col[0] / 255.0f; - iter_data.sel_col[1] = (float)edit->sel_col[1] / 255.0f; - iter_data.sel_col[2] = (float)edit->sel_col[2] / 255.0f; - iter_data.nosel_col[0] = (float)edit->nosel_col[0] / 255.0f; - iter_data.nosel_col[1] = (float)edit->nosel_col[1] / 255.0f; - iter_data.nosel_col[2] = (float)edit->nosel_col[2] / 255.0f; - } - - ParallelRangeSettings settings; - BLI_parallel_range_settings_defaults(&settings); - settings.scheduling_mode = TASK_SCHEDULING_DYNAMIC; - BLI_task_parallel_range(0, edit->totpoint, &iter_data, psys_cache_edit_paths_iter, &settings); - - edit->totcached = totpart; - - if (psys) { - ParticleSimulationData sim = {0}; - sim.depsgraph = depsgraph; - sim.scene = scene; - sim.ob = ob; - sim.psys = psys; - sim.psmd = edit->psmd_eval; - - psys_cache_child_paths(&sim, cfra, true, use_render_params); - } - - /* clear recalc flag if set here */ - if (recalc_set) { - PTCacheEditPoint *point; - int i; - for (i = 0, point = edit->points; i < totpart; i++, point++) { - point->flag &= ~PEP_EDIT_RECALC; - } - } + ParticleCacheKey **cache = edit->pathcache; + ParticleEditSettings *pset = &scene->toolsettings->particle; + + ParticleSystem *psys = edit->psys; + + ParticleData *pa = psys ? psys->particles : NULL; + + int segments = 1 << pset->draw_step; + int totpart = edit->totpoint, recalc_set = 0; + + segments = MAX2(segments, 4); + + if (!cache || edit->totpoint != edit->totcached) { + /* Clear out old and create new empty path cache. */ + psys_free_path_cache(edit->psys, edit); + cache = edit->pathcache = psys_alloc_path_cache_buffers( + &edit->pathcachebufs, totpart, segments + 1); + /* Set flag for update (child particles check this too). */ + int i; + PTCacheEditPoint *point; + for (i = 0, point = edit->points; i < totpart; i++, point++) { + point->flag |= PEP_EDIT_RECALC; + } + recalc_set = 1; + } + + const bool use_weight = (pset->brushtype == PE_BRUSH_WEIGHT) && (psys != NULL) && + (psys->particles != NULL); + + CacheEditrPathsIterData iter_data; + iter_data.object = ob; + iter_data.edit = edit; + iter_data.psmd = edit->psmd_eval; + iter_data.pa = pa; + iter_data.segments = segments; + iter_data.use_weight = use_weight; + + if (use_weight) { + ; /* use weight painting colors now... */ + } + else { + iter_data.sel_col[0] = (float)edit->sel_col[0] / 255.0f; + iter_data.sel_col[1] = (float)edit->sel_col[1] / 255.0f; + iter_data.sel_col[2] = (float)edit->sel_col[2] / 255.0f; + iter_data.nosel_col[0] = (float)edit->nosel_col[0] / 255.0f; + iter_data.nosel_col[1] = (float)edit->nosel_col[1] / 255.0f; + iter_data.nosel_col[2] = (float)edit->nosel_col[2] / 255.0f; + } + + ParallelRangeSettings settings; + BLI_parallel_range_settings_defaults(&settings); + settings.scheduling_mode = TASK_SCHEDULING_DYNAMIC; + BLI_task_parallel_range(0, edit->totpoint, &iter_data, psys_cache_edit_paths_iter, &settings); + + edit->totcached = totpart; + + if (psys) { + ParticleSimulationData sim = {0}; + sim.depsgraph = depsgraph; + sim.scene = scene; + sim.ob = ob; + sim.psys = psys; + sim.psmd = edit->psmd_eval; + + psys_cache_child_paths(&sim, cfra, true, use_render_params); + } + + /* clear recalc flag if set here */ + if (recalc_set) { + PTCacheEditPoint *point; + int i; + for (i = 0, point = edit->points; i < totpart; i++, point++) { + point->flag &= ~PEP_EDIT_RECALC; + } + } } /************************************************/ -/* Particle Key handling */ +/* Particle Key handling */ /************************************************/ void copy_particle_key(ParticleKey *to, ParticleKey *from, int time) { - if (time) { - memcpy(to, from, sizeof(ParticleKey)); - } - else { - float to_time = to->time; - memcpy(to, from, sizeof(ParticleKey)); - to->time = to_time; - } + if (time) { + memcpy(to, from, sizeof(ParticleKey)); + } + else { + float to_time = to->time; + memcpy(to, from, sizeof(ParticleKey)); + to->time = to_time; + } } void psys_get_from_key(ParticleKey *key, float loc[3], float vel[3], float rot[4], float *time) { - if (loc) copy_v3_v3(loc, key->co); - if (vel) copy_v3_v3(vel, key->vel); - if (rot) copy_qt_qt(rot, key->rot); - if (time) *time = key->time; + if (loc) + copy_v3_v3(loc, key->co); + if (vel) + copy_v3_v3(vel, key->vel); + if (rot) + copy_qt_qt(rot, key->rot); + if (time) + *time = key->time; } static void triatomat(float *v1, float *v2, float *v3, float (*uv)[2], float mat[4][4]) { - float det, w1, w2, d1[2], d2[2]; - - memset(mat, 0, sizeof(float) * 4 * 4); - mat[3][3] = 1.0f; - - /* first axis is the normal */ - normal_tri_v3(mat[2], v1, v2, v3); - - /* second axis along (1, 0) in uv space */ - if (uv) { - d1[0] = uv[1][0] - uv[0][0]; - d1[1] = uv[1][1] - uv[0][1]; - d2[0] = uv[2][0] - uv[0][0]; - d2[1] = uv[2][1] - uv[0][1]; - - det = d2[0] * d1[1] - d2[1] * d1[0]; - - if (det != 0.0f) { - det = 1.0f / det; - w1 = -d2[1] * det; - w2 = d1[1] * det; - - mat[1][0] = w1 * (v2[0] - v1[0]) + w2 * (v3[0] - v1[0]); - mat[1][1] = w1 * (v2[1] - v1[1]) + w2 * (v3[1] - v1[1]); - mat[1][2] = w1 * (v2[2] - v1[2]) + w2 * (v3[2] - v1[2]); - normalize_v3(mat[1]); - } - else - mat[1][0] = mat[1][1] = mat[1][2] = 0.0f; - } - else { - sub_v3_v3v3(mat[1], v2, v1); - normalize_v3(mat[1]); - } - - /* third as a cross product */ - cross_v3_v3v3(mat[0], mat[1], mat[2]); + float det, w1, w2, d1[2], d2[2]; + + memset(mat, 0, sizeof(float) * 4 * 4); + mat[3][3] = 1.0f; + + /* first axis is the normal */ + normal_tri_v3(mat[2], v1, v2, v3); + + /* second axis along (1, 0) in uv space */ + if (uv) { + d1[0] = uv[1][0] - uv[0][0]; + d1[1] = uv[1][1] - uv[0][1]; + d2[0] = uv[2][0] - uv[0][0]; + d2[1] = uv[2][1] - uv[0][1]; + + det = d2[0] * d1[1] - d2[1] * d1[0]; + + if (det != 0.0f) { + det = 1.0f / det; + w1 = -d2[1] * det; + w2 = d1[1] * det; + + mat[1][0] = w1 * (v2[0] - v1[0]) + w2 * (v3[0] - v1[0]); + mat[1][1] = w1 * (v2[1] - v1[1]) + w2 * (v3[1] - v1[1]); + mat[1][2] = w1 * (v2[2] - v1[2]) + w2 * (v3[2] - v1[2]); + normalize_v3(mat[1]); + } + else + mat[1][0] = mat[1][1] = mat[1][2] = 0.0f; + } + else { + sub_v3_v3v3(mat[1], v2, v1); + normalize_v3(mat[1]); + } + + /* third as a cross product */ + cross_v3_v3v3(mat[0], mat[1], mat[2]); } static void psys_face_mat(Object *ob, Mesh *mesh, ParticleData *pa, float mat[4][4], int orco) { - float v[3][3]; - MFace *mface; - OrigSpaceFace *osface; - float (*orcodata)[3]; - - int i = (ELEM(pa->num_dmcache, DMCACHE_ISCHILD, DMCACHE_NOTFOUND)) ? pa->num : pa->num_dmcache; - if (i == -1 || i >= mesh->totface) { unit_m4(mat); return; } - - mface = &mesh->mface[i]; - osface = CustomData_get(&mesh->fdata, i, CD_ORIGSPACE); - - if (orco && (orcodata = CustomData_get_layer(&mesh->vdata, CD_ORCO))) { - copy_v3_v3(v[0], orcodata[mface->v1]); - copy_v3_v3(v[1], orcodata[mface->v2]); - copy_v3_v3(v[2], orcodata[mface->v3]); - - /* ugly hack to use non-transformed orcos, since only those - * give symmetric results for mirroring in particle mode */ - if (CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX)) - BKE_mesh_orco_verts_transform(ob->data, v, 3, 1); - } - else { - copy_v3_v3(v[0], mesh->mvert[mface->v1].co); - copy_v3_v3(v[1], mesh->mvert[mface->v2].co); - copy_v3_v3(v[2], mesh->mvert[mface->v3].co); - } - - triatomat(v[0], v[1], v[2], (osface) ? osface->uv : NULL, mat); + float v[3][3]; + MFace *mface; + OrigSpaceFace *osface; + float(*orcodata)[3]; + + int i = (ELEM(pa->num_dmcache, DMCACHE_ISCHILD, DMCACHE_NOTFOUND)) ? pa->num : pa->num_dmcache; + if (i == -1 || i >= mesh->totface) { + unit_m4(mat); + return; + } + + mface = &mesh->mface[i]; + osface = CustomData_get(&mesh->fdata, i, CD_ORIGSPACE); + + if (orco && (orcodata = CustomData_get_layer(&mesh->vdata, CD_ORCO))) { + copy_v3_v3(v[0], orcodata[mface->v1]); + copy_v3_v3(v[1], orcodata[mface->v2]); + copy_v3_v3(v[2], orcodata[mface->v3]); + + /* ugly hack to use non-transformed orcos, since only those + * give symmetric results for mirroring in particle mode */ + if (CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX)) + BKE_mesh_orco_verts_transform(ob->data, v, 3, 1); + } + else { + copy_v3_v3(v[0], mesh->mvert[mface->v1].co); + copy_v3_v3(v[1], mesh->mvert[mface->v2].co); + copy_v3_v3(v[2], mesh->mvert[mface->v3].co); + } + + triatomat(v[0], v[1], v[2], (osface) ? osface->uv : NULL, mat); } -void psys_mat_hair_to_object(Object *UNUSED(ob), Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) +void psys_mat_hair_to_object( + Object *UNUSED(ob), Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) { - float vec[3]; + float vec[3]; - /* can happen when called from a different object's modifier */ - if (!mesh) { - unit_m4(hairmat); - return; - } + /* can happen when called from a different object's modifier */ + if (!mesh) { + unit_m4(hairmat); + return; + } - psys_face_mat(0, mesh, pa, hairmat, 0); - psys_particle_on_dm(mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, 0); - copy_v3_v3(hairmat[3], vec); + psys_face_mat(0, mesh, pa, hairmat, 0); + psys_particle_on_dm(mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, 0); + copy_v3_v3(hairmat[3], vec); } -void psys_mat_hair_to_orco(Object *ob, Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) +void psys_mat_hair_to_orco( + Object *ob, Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) { - float vec[3], orco[3]; + float vec[3], orco[3]; - psys_face_mat(ob, mesh, pa, hairmat, 1); - psys_particle_on_dm(mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, orco); + psys_face_mat(ob, mesh, pa, hairmat, 1); + psys_particle_on_dm( + mesh, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, orco); - /* see psys_face_mat for why this function is called */ - if (CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX)) - BKE_mesh_orco_verts_transform(ob->data, &orco, 1, 1); - copy_v3_v3(hairmat[3], orco); + /* see psys_face_mat for why this function is called */ + if (CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX)) + BKE_mesh_orco_verts_transform(ob->data, &orco, 1, 1); + copy_v3_v3(hairmat[3], orco); } void psys_vec_rot_to_face(Mesh *mesh, ParticleData *pa, float vec[3]) { - float mat[4][4]; + float mat[4][4]; - psys_face_mat(0, mesh, pa, mat, 0); - transpose_m4(mat); /* cheap inverse for rotation matrix */ - mul_mat3_m4_v3(mat, vec); + psys_face_mat(0, mesh, pa, mat, 0); + transpose_m4(mat); /* cheap inverse for rotation matrix */ + mul_mat3_m4_v3(mat, vec); } -void psys_mat_hair_to_global(Object *ob, Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) +void psys_mat_hair_to_global( + Object *ob, Mesh *mesh, short from, ParticleData *pa, float hairmat[4][4]) { - float facemat[4][4]; + float facemat[4][4]; - psys_mat_hair_to_object(ob, mesh, from, pa, facemat); + psys_mat_hair_to_object(ob, mesh, from, pa, facemat); - mul_m4_m4m4(hairmat, ob->obmat, facemat); + mul_m4_m4m4(hairmat, ob->obmat, facemat); } /************************************************/ -/* ParticleSettings handling */ +/* ParticleSettings handling */ /************************************************/ ModifierData *object_add_particle_system(Main *bmain, Scene *scene, Object *ob, const char *name) { - ParticleSystem *psys; - ModifierData *md; - ParticleSystemModifierData *psmd; + ParticleSystem *psys; + ModifierData *md; + ParticleSystemModifierData *psmd; - if (!ob || ob->type != OB_MESH) - return NULL; + if (!ob || ob->type != OB_MESH) + return NULL; - if (name == NULL) { - name = DATA_("ParticleSettings"); - } + if (name == NULL) { + name = DATA_("ParticleSettings"); + } - psys = ob->particlesystem.first; - for (; psys; psys = psys->next) - psys->flag &= ~PSYS_CURRENT; + psys = ob->particlesystem.first; + for (; psys; psys = psys->next) + psys->flag &= ~PSYS_CURRENT; - psys = MEM_callocN(sizeof(ParticleSystem), "particle_system"); - psys->pointcache = BKE_ptcache_add(&psys->ptcaches); - BLI_addtail(&ob->particlesystem, psys); - psys_unique_name(ob, psys, name); + psys = MEM_callocN(sizeof(ParticleSystem), "particle_system"); + psys->pointcache = BKE_ptcache_add(&psys->ptcaches); + BLI_addtail(&ob->particlesystem, psys); + psys_unique_name(ob, psys, name); - psys->part = BKE_particlesettings_add(bmain, psys->name); + psys->part = BKE_particlesettings_add(bmain, psys->name); - md = modifier_new(eModifierType_ParticleSystem); - BLI_strncpy(md->name, psys->name, sizeof(md->name)); - modifier_unique_name(&ob->modifiers, md); + md = modifier_new(eModifierType_ParticleSystem); + BLI_strncpy(md->name, psys->name, sizeof(md->name)); + modifier_unique_name(&ob->modifiers, md); - psmd = (ParticleSystemModifierData *) md; - psmd->psys = psys; - BLI_addtail(&ob->modifiers, md); + psmd = (ParticleSystemModifierData *)md; + psmd->psys = psys; + BLI_addtail(&ob->modifiers, md); - psys->totpart = 0; - psys->flag = PSYS_CURRENT; - psys->cfra = BKE_scene_frame_get_from_ctime(scene, CFRA + 1); + psys->totpart = 0; + psys->flag = PSYS_CURRENT; + psys->cfra = BKE_scene_frame_get_from_ctime(scene, CFRA + 1); - DEG_relations_tag_update(bmain); - DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY); + DEG_relations_tag_update(bmain); + DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY); - return md; + return md; } void object_remove_particle_system(Main *bmain, Scene *UNUSED(scene), Object *ob) { - ParticleSystem *psys = psys_get_current(ob); - ParticleSystemModifierData *psmd; - ModifierData *md; - - if (!psys) - return; - - /* clear all other appearances of this pointer (like on smoke flow modifier) */ - if ((md = modifiers_findByType(ob, eModifierType_Smoke))) { - SmokeModifierData *smd = (SmokeModifierData *)md; - if ((smd->type == MOD_SMOKE_TYPE_FLOW) && smd->flow && smd->flow->psys) - if (smd->flow->psys == psys) - smd->flow->psys = NULL; - } - - if ((md = modifiers_findByType(ob, eModifierType_DynamicPaint))) { - DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md; - if (pmd->brush && pmd->brush->psys) - if (pmd->brush->psys == psys) - pmd->brush->psys = NULL; - } - - /* clear modifier */ - psmd = psys_get_modifier(ob, psys); - BLI_remlink(&ob->modifiers, psmd); - modifier_free((ModifierData *)psmd); - - /* clear particle system */ - BLI_remlink(&ob->particlesystem, psys); - if (psys->part) { - id_us_min(&psys->part->id); - } - psys_free(ob, psys); - - if (ob->particlesystem.first) - ((ParticleSystem *) ob->particlesystem.first)->flag |= PSYS_CURRENT; - else - ob->mode &= ~OB_MODE_PARTICLE_EDIT; - - DEG_relations_tag_update(bmain); - DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY); - - /* Flush object mode. */ - DEG_id_tag_update(&ob->id, ID_RECALC_COPY_ON_WRITE); + ParticleSystem *psys = psys_get_current(ob); + ParticleSystemModifierData *psmd; + ModifierData *md; + + if (!psys) + return; + + /* clear all other appearances of this pointer (like on smoke flow modifier) */ + if ((md = modifiers_findByType(ob, eModifierType_Smoke))) { + SmokeModifierData *smd = (SmokeModifierData *)md; + if ((smd->type == MOD_SMOKE_TYPE_FLOW) && smd->flow && smd->flow->psys) + if (smd->flow->psys == psys) + smd->flow->psys = NULL; + } + + if ((md = modifiers_findByType(ob, eModifierType_DynamicPaint))) { + DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md; + if (pmd->brush && pmd->brush->psys) + if (pmd->brush->psys == psys) + pmd->brush->psys = NULL; + } + + /* clear modifier */ + psmd = psys_get_modifier(ob, psys); + BLI_remlink(&ob->modifiers, psmd); + modifier_free((ModifierData *)psmd); + + /* clear particle system */ + BLI_remlink(&ob->particlesystem, psys); + if (psys->part) { + id_us_min(&psys->part->id); + } + psys_free(ob, psys); + + if (ob->particlesystem.first) + ((ParticleSystem *)ob->particlesystem.first)->flag |= PSYS_CURRENT; + else + ob->mode &= ~OB_MODE_PARTICLE_EDIT; + + DEG_relations_tag_update(bmain); + DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY); + + /* Flush object mode. */ + DEG_id_tag_update(&ob->id, ID_RECALC_COPY_ON_WRITE); } static void default_particle_settings(ParticleSettings *part) { - part->type = PART_EMITTER; - part->distr = PART_DISTR_JIT; - part->draw_as = PART_DRAW_REND; - part->ren_as = PART_DRAW_HALO; - part->bb_uv_split = 1; - part->flag = PART_EDISTR | PART_TRAND | PART_HIDE_ADVANCED_HAIR; - - part->sta = 1.0; - part->end = 200.0; - part->lifetime = 50.0; - part->jitfac = 1.0; - part->totpart = 1000; - part->grid_res = 10; - part->timetweak = 1.0; - part->courant_target = 0.2; - - part->integrator = PART_INT_MIDPOINT; - part->phystype = PART_PHYS_NEWTON; - part->hair_step = 5; - part->keys_step = 5; - part->draw_step = 2; - part->ren_step = 3; - part->adapt_angle = 5; - part->adapt_pix = 3; - part->kink_axis = 2; - part->kink_amp_clump = 1.f; - part->kink_extra_steps = 4; - part->clump_noise_size = 1.0f; - part->reactevent = PART_EVENT_DEATH; - part->disp = 100; - part->from = PART_FROM_FACE; - - part->normfac = 1.0f; - - part->mass = 1.0; - part->size = 0.05; - part->childsize = 1.0; - - part->rotmode = PART_ROT_VEL; - part->avemode = PART_AVE_VELOCITY; - - part->child_nbr = 10; - part->ren_child_nbr = 100; - part->childrad = 0.2f; - part->childflat = 0.0f; - part->clumppow = 0.0f; - part->kink_amp = 0.2f; - part->kink_freq = 2.0; - - part->rough1_size = 1.0; - part->rough2_size = 1.0; - part->rough_end_shape = 1.0; - - part->clength = 1.0f; - part->clength_thres = 0.0f; - - part->draw = 0; - part->draw_line[0] = 0.5; - part->path_start = 0.0f; - part->path_end = 1.0f; - - part->bb_size[0] = part->bb_size[1] = 1.0f; - - part->keyed_loops = 1; - - part->color_vec_max = 1.f; - part->draw_col = PART_DRAW_COL_MAT; - - if (!part->effector_weights) - part->effector_weights = BKE_effector_add_weights(NULL); - - part->omat = 1; - part->use_modifier_stack = false; - part->draw_size = 0.1f; - - part->shape_flag = PART_SHAPE_CLOSE_TIP; - part->shape = 0.0f; - part->rad_root = 1.0f; - part->rad_tip = 0.0f; - part->rad_scale = 0.01f; + part->type = PART_EMITTER; + part->distr = PART_DISTR_JIT; + part->draw_as = PART_DRAW_REND; + part->ren_as = PART_DRAW_HALO; + part->bb_uv_split = 1; + part->flag = PART_EDISTR | PART_TRAND | PART_HIDE_ADVANCED_HAIR; + + part->sta = 1.0; + part->end = 200.0; + part->lifetime = 50.0; + part->jitfac = 1.0; + part->totpart = 1000; + part->grid_res = 10; + part->timetweak = 1.0; + part->courant_target = 0.2; + + part->integrator = PART_INT_MIDPOINT; + part->phystype = PART_PHYS_NEWTON; + part->hair_step = 5; + part->keys_step = 5; + part->draw_step = 2; + part->ren_step = 3; + part->adapt_angle = 5; + part->adapt_pix = 3; + part->kink_axis = 2; + part->kink_amp_clump = 1.f; + part->kink_extra_steps = 4; + part->clump_noise_size = 1.0f; + part->reactevent = PART_EVENT_DEATH; + part->disp = 100; + part->from = PART_FROM_FACE; + + part->normfac = 1.0f; + + part->mass = 1.0; + part->size = 0.05; + part->childsize = 1.0; + + part->rotmode = PART_ROT_VEL; + part->avemode = PART_AVE_VELOCITY; + + part->child_nbr = 10; + part->ren_child_nbr = 100; + part->childrad = 0.2f; + part->childflat = 0.0f; + part->clumppow = 0.0f; + part->kink_amp = 0.2f; + part->kink_freq = 2.0; + + part->rough1_size = 1.0; + part->rough2_size = 1.0; + part->rough_end_shape = 1.0; + + part->clength = 1.0f; + part->clength_thres = 0.0f; + + part->draw = 0; + part->draw_line[0] = 0.5; + part->path_start = 0.0f; + part->path_end = 1.0f; + + part->bb_size[0] = part->bb_size[1] = 1.0f; + + part->keyed_loops = 1; + + part->color_vec_max = 1.f; + part->draw_col = PART_DRAW_COL_MAT; + + if (!part->effector_weights) + part->effector_weights = BKE_effector_add_weights(NULL); + + part->omat = 1; + part->use_modifier_stack = false; + part->draw_size = 0.1f; + + part->shape_flag = PART_SHAPE_CLOSE_TIP; + part->shape = 0.0f; + part->rad_root = 1.0f; + part->rad_tip = 0.0f; + part->rad_scale = 0.01f; } - ParticleSettings *BKE_particlesettings_add(Main *bmain, const char *name) { - ParticleSettings *part; + ParticleSettings *part; - part = BKE_libblock_alloc(bmain, ID_PA, name, 0); + part = BKE_libblock_alloc(bmain, ID_PA, name, 0); - default_particle_settings(part); + default_particle_settings(part); - return part; + return part; } void BKE_particlesettings_clump_curve_init(ParticleSettings *part) { - CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); - cumap->cm[0].curve[0].x = 0.0f; - cumap->cm[0].curve[0].y = 1.0f; - cumap->cm[0].curve[1].x = 1.0f; - cumap->cm[0].curve[1].y = 1.0f; + cumap->cm[0].curve[0].x = 0.0f; + cumap->cm[0].curve[0].y = 1.0f; + cumap->cm[0].curve[1].x = 1.0f; + cumap->cm[0].curve[1].y = 1.0f; - curvemapping_initialize(cumap); + curvemapping_initialize(cumap); - part->clumpcurve = cumap; + part->clumpcurve = cumap; } void BKE_particlesettings_rough_curve_init(ParticleSettings *part) { - CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); - cumap->cm[0].curve[0].x = 0.0f; - cumap->cm[0].curve[0].y = 1.0f; - cumap->cm[0].curve[1].x = 1.0f; - cumap->cm[0].curve[1].y = 1.0f; + cumap->cm[0].curve[0].x = 0.0f; + cumap->cm[0].curve[0].y = 1.0f; + cumap->cm[0].curve[1].x = 1.0f; + cumap->cm[0].curve[1].y = 1.0f; - curvemapping_initialize(cumap); + curvemapping_initialize(cumap); - part->roughcurve = cumap; + part->roughcurve = cumap; } void BKE_particlesettings_twist_curve_init(ParticleSettings *part) { - CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + CurveMapping *cumap = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); - cumap->cm[0].curve[0].x = 0.0f; - cumap->cm[0].curve[0].y = 1.0f; - cumap->cm[0].curve[1].x = 1.0f; - cumap->cm[0].curve[1].y = 1.0f; + cumap->cm[0].curve[0].x = 0.0f; + cumap->cm[0].curve[0].y = 1.0f; + cumap->cm[0].curve[1].x = 1.0f; + cumap->cm[0].curve[1].y = 1.0f; - curvemapping_initialize(cumap); + curvemapping_initialize(cumap); - part->twistcurve = cumap; + part->twistcurve = cumap; } /** @@ -3289,974 +3570,1114 @@ void BKE_particlesettings_twist_curve_init(ParticleSettings *part) * * \param flag: Copying options (see BKE_library.h's LIB_ID_COPY_... flags for more). */ -void BKE_particlesettings_copy_data( - Main *UNUSED(bmain), ParticleSettings *part_dst, const ParticleSettings *part_src, const int UNUSED(flag)) +void BKE_particlesettings_copy_data(Main *UNUSED(bmain), + ParticleSettings *part_dst, + const ParticleSettings *part_src, + const int UNUSED(flag)) { - part_dst->pd = BKE_partdeflect_copy(part_src->pd); - part_dst->pd2 = BKE_partdeflect_copy(part_src->pd2); - part_dst->effector_weights = MEM_dupallocN(part_src->effector_weights); - part_dst->fluid = MEM_dupallocN(part_src->fluid); - - if (part_src->clumpcurve) { - part_dst->clumpcurve = curvemapping_copy(part_src->clumpcurve); - } - if (part_src->roughcurve) { - part_dst->roughcurve = curvemapping_copy(part_src->roughcurve); - } - if (part_src->twistcurve) { - part_dst->twistcurve = curvemapping_copy(part_src->twistcurve); - } - - part_dst->boids = boid_copy_settings(part_src->boids); - - for (int a = 0; a < MAX_MTEX; a++) { - if (part_src->mtex[a]) { - part_dst->mtex[a] = MEM_dupallocN(part_src->mtex[a]); - } - } - - BLI_duplicatelist(&part_dst->instance_weights, &part_src->instance_weights); + part_dst->pd = BKE_partdeflect_copy(part_src->pd); + part_dst->pd2 = BKE_partdeflect_copy(part_src->pd2); + part_dst->effector_weights = MEM_dupallocN(part_src->effector_weights); + part_dst->fluid = MEM_dupallocN(part_src->fluid); + + if (part_src->clumpcurve) { + part_dst->clumpcurve = curvemapping_copy(part_src->clumpcurve); + } + if (part_src->roughcurve) { + part_dst->roughcurve = curvemapping_copy(part_src->roughcurve); + } + if (part_src->twistcurve) { + part_dst->twistcurve = curvemapping_copy(part_src->twistcurve); + } + + part_dst->boids = boid_copy_settings(part_src->boids); + + for (int a = 0; a < MAX_MTEX; a++) { + if (part_src->mtex[a]) { + part_dst->mtex[a] = MEM_dupallocN(part_src->mtex[a]); + } + } + + BLI_duplicatelist(&part_dst->instance_weights, &part_src->instance_weights); } ParticleSettings *BKE_particlesettings_copy(Main *bmain, const ParticleSettings *part) { - ParticleSettings *part_copy; - BKE_id_copy(bmain, &part->id, (ID **)&part_copy); - return part_copy; + ParticleSettings *part_copy; + BKE_id_copy(bmain, &part->id, (ID **)&part_copy); + return part_copy; } void BKE_particlesettings_make_local(Main *bmain, ParticleSettings *part, const bool lib_local) { - BKE_id_make_local_generic(bmain, &part->id, true, lib_local); + BKE_id_make_local_generic(bmain, &part->id, true, lib_local); } /************************************************/ -/* Textures */ +/* Textures */ /************************************************/ -static int get_particle_uv(Mesh *mesh, ParticleData *pa, int index, const float fuv[4], - char *name, float *texco, bool from_vert) +static int get_particle_uv(Mesh *mesh, + ParticleData *pa, + int index, + const float fuv[4], + char *name, + float *texco, + bool from_vert) { - MFace *mf; - MTFace *tf; - int i; - - tf = CustomData_get_layer_named(&mesh->fdata, CD_MTFACE, name); - - if (tf == NULL) - tf = mesh->mtface; - - if (tf == NULL) - return 0; - - if (pa) { - i = ELEM(pa->num_dmcache, DMCACHE_NOTFOUND, DMCACHE_ISCHILD) ? pa->num : pa->num_dmcache; - if ((!from_vert && i >= mesh->totface) || - (from_vert && i >= mesh->totvert)) - { - i = -1; - } - } - else { - i = index; - } - - if (i == -1) { - texco[0] = 0.0f; - texco[1] = 0.0f; - texco[2] = 0.0f; - } - else { - if (from_vert) { - mf = mesh->mface; - - /* This finds the first face to contain the emitting vertex, - * this is not ideal, but is mostly fine as UV seams generally - * map to equal-colored parts of a texture */ - for (int j = 0; j < mesh->totface; j++, mf++) { - if (ELEM(i, mf->v1, mf->v2, mf->v3, mf->v4)) { - i = j; - break; - } - } - } - else { - mf = &mesh->mface[i]; - } - - psys_interpolate_uvs(&tf[i], mf->v4, fuv, texco); - - texco[0] = texco[0] * 2.0f - 1.0f; - texco[1] = texco[1] * 2.0f - 1.0f; - texco[2] = 0.0f; - } - - return 1; + MFace *mf; + MTFace *tf; + int i; + + tf = CustomData_get_layer_named(&mesh->fdata, CD_MTFACE, name); + + if (tf == NULL) + tf = mesh->mtface; + + if (tf == NULL) + return 0; + + if (pa) { + i = ELEM(pa->num_dmcache, DMCACHE_NOTFOUND, DMCACHE_ISCHILD) ? pa->num : pa->num_dmcache; + if ((!from_vert && i >= mesh->totface) || (from_vert && i >= mesh->totvert)) { + i = -1; + } + } + else { + i = index; + } + + if (i == -1) { + texco[0] = 0.0f; + texco[1] = 0.0f; + texco[2] = 0.0f; + } + else { + if (from_vert) { + mf = mesh->mface; + + /* This finds the first face to contain the emitting vertex, + * this is not ideal, but is mostly fine as UV seams generally + * map to equal-colored parts of a texture */ + for (int j = 0; j < mesh->totface; j++, mf++) { + if (ELEM(i, mf->v1, mf->v2, mf->v3, mf->v4)) { + i = j; + break; + } + } + } + else { + mf = &mesh->mface[i]; + } + + psys_interpolate_uvs(&tf[i], mf->v4, fuv, texco); + + texco[0] = texco[0] * 2.0f - 1.0f; + texco[1] = texco[1] * 2.0f - 1.0f; + texco[2] = 0.0f; + } + + return 1; } -#define SET_PARTICLE_TEXTURE(type, pvalue, texfac) \ - if ((event & mtex->mapto) & type) { \ - pvalue = texture_value_blend(def, pvalue, value, texfac, blend); \ - } (void)0 - -#define CLAMP_PARTICLE_TEXTURE_POS(type, pvalue) \ - if (event & type) { \ - CLAMP(pvalue, 0.0f, 1.0f); \ - } (void)0 - -#define CLAMP_WARP_PARTICLE_TEXTURE_POS(type, pvalue) \ - if (event & type) { \ - if (pvalue < 0.0f) \ - pvalue = 1.0f + pvalue; \ - CLAMP(pvalue, 0.0f, 1.0f); \ - } (void)0 - -#define CLAMP_PARTICLE_TEXTURE_POSNEG(type, pvalue) \ - if (event & type) { \ - CLAMP(pvalue, -1.0f, 1.0f); \ - } (void)0 - -static void get_cpa_texture(Mesh *mesh, ParticleSystem *psys, ParticleSettings *part, ParticleData *par, int child_index, int face_index, const float fw[4], float *orco, ParticleTexture *ptex, int event, float cfra) +#define SET_PARTICLE_TEXTURE(type, pvalue, texfac) \ + if ((event & mtex->mapto) & type) { \ + pvalue = texture_value_blend(def, pvalue, value, texfac, blend); \ + } \ + (void)0 + +#define CLAMP_PARTICLE_TEXTURE_POS(type, pvalue) \ + if (event & type) { \ + CLAMP(pvalue, 0.0f, 1.0f); \ + } \ + (void)0 + +#define CLAMP_WARP_PARTICLE_TEXTURE_POS(type, pvalue) \ + if (event & type) { \ + if (pvalue < 0.0f) \ + pvalue = 1.0f + pvalue; \ + CLAMP(pvalue, 0.0f, 1.0f); \ + } \ + (void)0 + +#define CLAMP_PARTICLE_TEXTURE_POSNEG(type, pvalue) \ + if (event & type) { \ + CLAMP(pvalue, -1.0f, 1.0f); \ + } \ + (void)0 + +static void get_cpa_texture(Mesh *mesh, + ParticleSystem *psys, + ParticleSettings *part, + ParticleData *par, + int child_index, + int face_index, + const float fw[4], + float *orco, + ParticleTexture *ptex, + int event, + float cfra) { - MTex *mtex, **mtexp = part->mtex; - int m; - float value, rgba[4], texvec[3]; - - ptex->ivel = ptex->life = ptex->exist = ptex->size = ptex->damp = - ptex->gravity = ptex->field = ptex->time = ptex->clump = ptex->kink_freq = ptex->kink_amp = - ptex->effector = ptex->rough1 = ptex->rough2 = ptex->roughe = 1.0f; - ptex->twist = 1.0f; - - ptex->length = 1.0f - part->randlength * psys_frand(psys, child_index + 26); - ptex->length *= part->clength_thres < psys_frand(psys, child_index + 27) ? part->clength : 1.0f; - - for (m = 0; m < MAX_MTEX; m++, mtexp++) { - mtex = *mtexp; - if (mtex && mtex->tex && mtex->mapto) { - float def = mtex->def_var; - short blend = mtex->blendtype; - short texco = mtex->texco; - - if (ELEM(texco, TEXCO_UV, TEXCO_ORCO) && (ELEM(part->from, PART_FROM_FACE, PART_FROM_VOLUME) == 0 || part->distr == PART_DISTR_GRID)) - texco = TEXCO_GLOB; - - switch (texco) { - case TEXCO_GLOB: - copy_v3_v3(texvec, par->state.co); - break; - case TEXCO_OBJECT: - copy_v3_v3(texvec, par->state.co); - if (mtex->object) - mul_m4_v3(mtex->object->imat, texvec); - break; - case TEXCO_UV: - if (fw && get_particle_uv(mesh, NULL, face_index, fw, mtex->uvname, - texvec, (part->from == PART_FROM_VERT))) - { - break; - } - /* no break, failed to get uv's, so let's try orco's */ - ATTR_FALLTHROUGH; - case TEXCO_ORCO: - copy_v3_v3(texvec, orco); - break; - case TEXCO_PARTICLE: - /* texture coordinates in range [-1, 1] */ - texvec[0] = 2.f * (cfra - par->time) / (par->dietime - par->time) - 1.f; - texvec[1] = 0.f; - texvec[2] = 0.f; - break; - } - - externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false); - - if ((event & mtex->mapto) & PAMAP_ROUGH) - ptex->rough1 = ptex->rough2 = ptex->roughe = texture_value_blend(def, ptex->rough1, value, mtex->roughfac, blend); - - SET_PARTICLE_TEXTURE(PAMAP_LENGTH, ptex->length, mtex->lengthfac); - SET_PARTICLE_TEXTURE(PAMAP_CLUMP, ptex->clump, mtex->clumpfac); - SET_PARTICLE_TEXTURE(PAMAP_KINK_AMP, ptex->kink_amp, mtex->kinkampfac); - SET_PARTICLE_TEXTURE(PAMAP_KINK_FREQ, ptex->kink_freq, mtex->kinkfac); - SET_PARTICLE_TEXTURE(PAMAP_DENS, ptex->exist, mtex->padensfac); - SET_PARTICLE_TEXTURE(PAMAP_TWIST, ptex->twist, mtex->twistfac); - } - } - - CLAMP_PARTICLE_TEXTURE_POS(PAMAP_LENGTH, ptex->length); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_CLUMP, ptex->clump); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_KINK_AMP, ptex->kink_amp); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_KINK_FREQ, ptex->kink_freq); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_ROUGH, ptex->rough1); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DENS, ptex->exist); + MTex *mtex, **mtexp = part->mtex; + int m; + float value, rgba[4], texvec[3]; + + ptex->ivel = ptex->life = ptex->exist = ptex->size = ptex->damp = ptex->gravity = ptex->field = + ptex->time = ptex->clump = ptex->kink_freq = ptex->kink_amp = ptex->effector = ptex->rough1 = + ptex->rough2 = ptex->roughe = 1.0f; + ptex->twist = 1.0f; + + ptex->length = 1.0f - part->randlength * psys_frand(psys, child_index + 26); + ptex->length *= part->clength_thres < psys_frand(psys, child_index + 27) ? part->clength : 1.0f; + + for (m = 0; m < MAX_MTEX; m++, mtexp++) { + mtex = *mtexp; + if (mtex && mtex->tex && mtex->mapto) { + float def = mtex->def_var; + short blend = mtex->blendtype; + short texco = mtex->texco; + + if (ELEM(texco, TEXCO_UV, TEXCO_ORCO) && + (ELEM(part->from, PART_FROM_FACE, PART_FROM_VOLUME) == 0 || + part->distr == PART_DISTR_GRID)) + texco = TEXCO_GLOB; + + switch (texco) { + case TEXCO_GLOB: + copy_v3_v3(texvec, par->state.co); + break; + case TEXCO_OBJECT: + copy_v3_v3(texvec, par->state.co); + if (mtex->object) + mul_m4_v3(mtex->object->imat, texvec); + break; + case TEXCO_UV: + if (fw && get_particle_uv(mesh, + NULL, + face_index, + fw, + mtex->uvname, + texvec, + (part->from == PART_FROM_VERT))) { + break; + } + /* no break, failed to get uv's, so let's try orco's */ + ATTR_FALLTHROUGH; + case TEXCO_ORCO: + copy_v3_v3(texvec, orco); + break; + case TEXCO_PARTICLE: + /* texture coordinates in range [-1, 1] */ + texvec[0] = 2.f * (cfra - par->time) / (par->dietime - par->time) - 1.f; + texvec[1] = 0.f; + texvec[2] = 0.f; + break; + } + + externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false); + + if ((event & mtex->mapto) & PAMAP_ROUGH) + ptex->rough1 = ptex->rough2 = ptex->roughe = texture_value_blend( + def, ptex->rough1, value, mtex->roughfac, blend); + + SET_PARTICLE_TEXTURE(PAMAP_LENGTH, ptex->length, mtex->lengthfac); + SET_PARTICLE_TEXTURE(PAMAP_CLUMP, ptex->clump, mtex->clumpfac); + SET_PARTICLE_TEXTURE(PAMAP_KINK_AMP, ptex->kink_amp, mtex->kinkampfac); + SET_PARTICLE_TEXTURE(PAMAP_KINK_FREQ, ptex->kink_freq, mtex->kinkfac); + SET_PARTICLE_TEXTURE(PAMAP_DENS, ptex->exist, mtex->padensfac); + SET_PARTICLE_TEXTURE(PAMAP_TWIST, ptex->twist, mtex->twistfac); + } + } + + CLAMP_PARTICLE_TEXTURE_POS(PAMAP_LENGTH, ptex->length); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_CLUMP, ptex->clump); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_KINK_AMP, ptex->kink_amp); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_KINK_FREQ, ptex->kink_freq); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_ROUGH, ptex->rough1); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DENS, ptex->exist); } -void psys_get_texture(ParticleSimulationData *sim, ParticleData *pa, ParticleTexture *ptex, int event, float cfra) +void psys_get_texture( + ParticleSimulationData *sim, ParticleData *pa, ParticleTexture *ptex, int event, float cfra) { - Object *ob = sim->ob; - Mesh *me = (Mesh *)ob->data; - ParticleSettings *part = sim->psys->part; - MTex **mtexp = part->mtex; - MTex *mtex; - int m; - float value, rgba[4], co[3], texvec[3]; - int setvars = 0; - - /* initialize ptex */ - ptex->ivel = ptex->life = ptex->exist = ptex->size = ptex->damp = - ptex->gravity = ptex->field = ptex->length = ptex->clump = ptex->kink_freq = ptex->kink_amp = - ptex->effector = ptex->rough1 = ptex->rough2 = ptex->roughe = 1.0f; - ptex->twist = 1.0f; - - ptex->time = (float)(pa - sim->psys->particles) / (float)sim->psys->totpart; - - for (m = 0; m < MAX_MTEX; m++, mtexp++) { - mtex = *mtexp; - if (mtex && mtex->tex && mtex->mapto) { - float def = mtex->def_var; - short blend = mtex->blendtype; - short texco = mtex->texco; - - if (texco == TEXCO_UV && (ELEM(part->from, PART_FROM_FACE, PART_FROM_VOLUME) == 0 || part->distr == PART_DISTR_GRID)) - texco = TEXCO_GLOB; - - switch (texco) { - case TEXCO_GLOB: - copy_v3_v3(texvec, pa->state.co); - break; - case TEXCO_OBJECT: - copy_v3_v3(texvec, pa->state.co); - if (mtex->object) - mul_m4_v3(mtex->object->imat, texvec); - break; - case TEXCO_UV: - if (get_particle_uv(sim->psmd->mesh_final, pa, 0, pa->fuv, mtex->uvname, - texvec, (part->from == PART_FROM_VERT))) - { - break; - } - /* no break, failed to get uv's, so let's try orco's */ - ATTR_FALLTHROUGH; - case TEXCO_ORCO: - psys_particle_on_emitter(sim->psmd, sim->psys->part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, co, 0, 0, 0, texvec); - - if (me->bb == NULL || (me->bb->flag & BOUNDBOX_DIRTY)) { - BKE_mesh_texspace_calc(me); - } - sub_v3_v3(texvec, me->loc); - if (me->size[0] != 0.0f) texvec[0] /= me->size[0]; - if (me->size[1] != 0.0f) texvec[1] /= me->size[1]; - if (me->size[2] != 0.0f) texvec[2] /= me->size[2]; - break; - case TEXCO_PARTICLE: - /* texture coordinates in range [-1, 1] */ - texvec[0] = 2.f * (cfra - pa->time) / (pa->dietime - pa->time) - 1.f; - if (sim->psys->totpart > 0) - texvec[1] = 2.f * (float)(pa - sim->psys->particles) / (float)sim->psys->totpart - 1.f; - else - texvec[1] = 0.0f; - texvec[2] = 0.f; - break; - } - - externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false); - - if ((event & mtex->mapto) & PAMAP_TIME) { - /* the first time has to set the base value for time regardless of blend mode */ - if ((setvars & MAP_PA_TIME) == 0) { - int flip = (mtex->timefac < 0.0f); - float timefac = fabsf(mtex->timefac); - ptex->time *= 1.0f - timefac; - ptex->time += timefac * ((flip) ? 1.0f - value : value); - setvars |= MAP_PA_TIME; - } - else - ptex->time = texture_value_blend(def, ptex->time, value, mtex->timefac, blend); - } - SET_PARTICLE_TEXTURE(PAMAP_LIFE, ptex->life, mtex->lifefac); - SET_PARTICLE_TEXTURE(PAMAP_DENS, ptex->exist, mtex->padensfac); - SET_PARTICLE_TEXTURE(PAMAP_SIZE, ptex->size, mtex->sizefac); - SET_PARTICLE_TEXTURE(PAMAP_IVEL, ptex->ivel, mtex->ivelfac); - SET_PARTICLE_TEXTURE(PAMAP_FIELD, ptex->field, mtex->fieldfac); - SET_PARTICLE_TEXTURE(PAMAP_GRAVITY, ptex->gravity, mtex->gravityfac); - SET_PARTICLE_TEXTURE(PAMAP_DAMP, ptex->damp, mtex->dampfac); - SET_PARTICLE_TEXTURE(PAMAP_LENGTH, ptex->length, mtex->lengthfac); - SET_PARTICLE_TEXTURE(PAMAP_TWIST, ptex->twist, mtex->twistfac); - } - } - - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_TIME, ptex->time); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_LIFE, ptex->life); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DENS, ptex->exist); - CLAMP_PARTICLE_TEXTURE_POS(PAMAP_SIZE, ptex->size); - CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_IVEL, ptex->ivel); - CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_FIELD, ptex->field); - CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_GRAVITY, ptex->gravity); - CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DAMP, ptex->damp); - CLAMP_PARTICLE_TEXTURE_POS(PAMAP_LENGTH, ptex->length); + Object *ob = sim->ob; + Mesh *me = (Mesh *)ob->data; + ParticleSettings *part = sim->psys->part; + MTex **mtexp = part->mtex; + MTex *mtex; + int m; + float value, rgba[4], co[3], texvec[3]; + int setvars = 0; + + /* initialize ptex */ + ptex->ivel = ptex->life = ptex->exist = ptex->size = ptex->damp = ptex->gravity = ptex->field = + ptex->length = ptex->clump = ptex->kink_freq = ptex->kink_amp = ptex->effector = + ptex->rough1 = ptex->rough2 = ptex->roughe = 1.0f; + ptex->twist = 1.0f; + + ptex->time = (float)(pa - sim->psys->particles) / (float)sim->psys->totpart; + + for (m = 0; m < MAX_MTEX; m++, mtexp++) { + mtex = *mtexp; + if (mtex && mtex->tex && mtex->mapto) { + float def = mtex->def_var; + short blend = mtex->blendtype; + short texco = mtex->texco; + + if (texco == TEXCO_UV && (ELEM(part->from, PART_FROM_FACE, PART_FROM_VOLUME) == 0 || + part->distr == PART_DISTR_GRID)) + texco = TEXCO_GLOB; + + switch (texco) { + case TEXCO_GLOB: + copy_v3_v3(texvec, pa->state.co); + break; + case TEXCO_OBJECT: + copy_v3_v3(texvec, pa->state.co); + if (mtex->object) + mul_m4_v3(mtex->object->imat, texvec); + break; + case TEXCO_UV: + if (get_particle_uv(sim->psmd->mesh_final, + pa, + 0, + pa->fuv, + mtex->uvname, + texvec, + (part->from == PART_FROM_VERT))) { + break; + } + /* no break, failed to get uv's, so let's try orco's */ + ATTR_FALLTHROUGH; + case TEXCO_ORCO: + psys_particle_on_emitter(sim->psmd, + sim->psys->part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + co, + 0, + 0, + 0, + texvec); + + if (me->bb == NULL || (me->bb->flag & BOUNDBOX_DIRTY)) { + BKE_mesh_texspace_calc(me); + } + sub_v3_v3(texvec, me->loc); + if (me->size[0] != 0.0f) + texvec[0] /= me->size[0]; + if (me->size[1] != 0.0f) + texvec[1] /= me->size[1]; + if (me->size[2] != 0.0f) + texvec[2] /= me->size[2]; + break; + case TEXCO_PARTICLE: + /* texture coordinates in range [-1, 1] */ + texvec[0] = 2.f * (cfra - pa->time) / (pa->dietime - pa->time) - 1.f; + if (sim->psys->totpart > 0) + texvec[1] = 2.f * (float)(pa - sim->psys->particles) / (float)sim->psys->totpart - 1.f; + else + texvec[1] = 0.0f; + texvec[2] = 0.f; + break; + } + + externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false); + + if ((event & mtex->mapto) & PAMAP_TIME) { + /* the first time has to set the base value for time regardless of blend mode */ + if ((setvars & MAP_PA_TIME) == 0) { + int flip = (mtex->timefac < 0.0f); + float timefac = fabsf(mtex->timefac); + ptex->time *= 1.0f - timefac; + ptex->time += timefac * ((flip) ? 1.0f - value : value); + setvars |= MAP_PA_TIME; + } + else + ptex->time = texture_value_blend(def, ptex->time, value, mtex->timefac, blend); + } + SET_PARTICLE_TEXTURE(PAMAP_LIFE, ptex->life, mtex->lifefac); + SET_PARTICLE_TEXTURE(PAMAP_DENS, ptex->exist, mtex->padensfac); + SET_PARTICLE_TEXTURE(PAMAP_SIZE, ptex->size, mtex->sizefac); + SET_PARTICLE_TEXTURE(PAMAP_IVEL, ptex->ivel, mtex->ivelfac); + SET_PARTICLE_TEXTURE(PAMAP_FIELD, ptex->field, mtex->fieldfac); + SET_PARTICLE_TEXTURE(PAMAP_GRAVITY, ptex->gravity, mtex->gravityfac); + SET_PARTICLE_TEXTURE(PAMAP_DAMP, ptex->damp, mtex->dampfac); + SET_PARTICLE_TEXTURE(PAMAP_LENGTH, ptex->length, mtex->lengthfac); + SET_PARTICLE_TEXTURE(PAMAP_TWIST, ptex->twist, mtex->twistfac); + } + } + + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_TIME, ptex->time); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_LIFE, ptex->life); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DENS, ptex->exist); + CLAMP_PARTICLE_TEXTURE_POS(PAMAP_SIZE, ptex->size); + CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_IVEL, ptex->ivel); + CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_FIELD, ptex->field); + CLAMP_PARTICLE_TEXTURE_POSNEG(PAMAP_GRAVITY, ptex->gravity); + CLAMP_WARP_PARTICLE_TEXTURE_POS(PAMAP_DAMP, ptex->damp); + CLAMP_PARTICLE_TEXTURE_POS(PAMAP_LENGTH, ptex->length); } /************************************************/ -/* Particle State */ +/* Particle State */ /************************************************/ float psys_get_timestep(ParticleSimulationData *sim) { - return 0.04f * sim->psys->part->timetweak; + return 0.04f * sim->psys->part->timetweak; } -float psys_get_child_time(ParticleSystem *psys, ChildParticle *cpa, float cfra, float *birthtime, float *dietime) +float psys_get_child_time( + ParticleSystem *psys, ChildParticle *cpa, float cfra, float *birthtime, float *dietime) { - ParticleSettings *part = psys->part; - float time, life; - - if (part->childtype == PART_CHILD_FACES) { - int w = 0; - time = 0.0; - while (w < 4 && cpa->pa[w] >= 0) { - time += cpa->w[w] * (psys->particles + cpa->pa[w])->time; - w++; - } - - life = part->lifetime * (1.0f - part->randlife * psys_frand(psys, cpa - psys->child + 25)); - } - else { - ParticleData *pa = psys->particles + cpa->parent; - - time = pa->time; - life = pa->lifetime; - } - - if (birthtime) - *birthtime = time; - if (dietime) - *dietime = time + life; - - return (cfra - time) / life; + ParticleSettings *part = psys->part; + float time, life; + + if (part->childtype == PART_CHILD_FACES) { + int w = 0; + time = 0.0; + while (w < 4 && cpa->pa[w] >= 0) { + time += cpa->w[w] * (psys->particles + cpa->pa[w])->time; + w++; + } + + life = part->lifetime * (1.0f - part->randlife * psys_frand(psys, cpa - psys->child + 25)); + } + else { + ParticleData *pa = psys->particles + cpa->parent; + + time = pa->time; + life = pa->lifetime; + } + + if (birthtime) + *birthtime = time; + if (dietime) + *dietime = time + life; + + return (cfra - time) / life; } -float psys_get_child_size(ParticleSystem *psys, ChildParticle *cpa, float UNUSED(cfra), float *UNUSED(pa_time)) +float psys_get_child_size(ParticleSystem *psys, + ChildParticle *cpa, + float UNUSED(cfra), + float *UNUSED(pa_time)) { - ParticleSettings *part = psys->part; - float size; // time XXX - - if (part->childtype == PART_CHILD_FACES) { - int w = 0; - size = 0.0; - while (w < 4 && cpa->pa[w] >= 0) { - size += cpa->w[w] * (psys->particles + cpa->pa[w])->size; - w++; - } - } - else { - size = psys->particles[cpa->parent].size; - } - - size *= part->childsize; - - if (part->childrandsize != 0.0f) - size *= 1.0f - part->childrandsize * psys_frand(psys, cpa - psys->child + 26); - - return size; + ParticleSettings *part = psys->part; + float size; // time XXX + + if (part->childtype == PART_CHILD_FACES) { + int w = 0; + size = 0.0; + while (w < 4 && cpa->pa[w] >= 0) { + size += cpa->w[w] * (psys->particles + cpa->pa[w])->size; + w++; + } + } + else { + size = psys->particles[cpa->parent].size; + } + + size *= part->childsize; + + if (part->childrandsize != 0.0f) + size *= 1.0f - part->childrandsize * psys_frand(psys, cpa - psys->child + 26); + + return size; } -static void get_child_modifier_parameters(ParticleSettings *part, ParticleThreadContext *ctx, ChildParticle *cpa, short cpa_from, int cpa_num, float *cpa_fuv, float *orco, ParticleTexture *ptex) +static void get_child_modifier_parameters(ParticleSettings *part, + ParticleThreadContext *ctx, + ChildParticle *cpa, + short cpa_from, + int cpa_num, + float *cpa_fuv, + float *orco, + ParticleTexture *ptex) { - ParticleSystem *psys = ctx->sim.psys; - int i = cpa - psys->child; - - get_cpa_texture(ctx->mesh, psys, part, psys->particles + cpa->pa[0], i, cpa_num, cpa_fuv, orco, ptex, PAMAP_DENS | PAMAP_CHILD, psys->cfra); - - - if (ptex->exist < psys_frand(psys, i + 24)) - return; - - if (ctx->vg_length) - ptex->length *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_length); - if (ctx->vg_clump) - ptex->clump *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_clump); - if (ctx->vg_kink) - ptex->kink_freq *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_kink); - if (ctx->vg_rough1) - ptex->rough1 *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough1); - if (ctx->vg_rough2) - ptex->rough2 *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough2); - if (ctx->vg_roughe) - ptex->roughe *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_roughe); - if (ctx->vg_effector) - ptex->effector *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_effector); - if (ctx->vg_twist) - ptex->twist *= psys_interpolate_value_from_verts(ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_twist); + ParticleSystem *psys = ctx->sim.psys; + int i = cpa - psys->child; + + get_cpa_texture(ctx->mesh, + psys, + part, + psys->particles + cpa->pa[0], + i, + cpa_num, + cpa_fuv, + orco, + ptex, + PAMAP_DENS | PAMAP_CHILD, + psys->cfra); + + if (ptex->exist < psys_frand(psys, i + 24)) + return; + + if (ctx->vg_length) + ptex->length *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_length); + if (ctx->vg_clump) + ptex->clump *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_clump); + if (ctx->vg_kink) + ptex->kink_freq *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_kink); + if (ctx->vg_rough1) + ptex->rough1 *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough1); + if (ctx->vg_rough2) + ptex->rough2 *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough2); + if (ctx->vg_roughe) + ptex->roughe *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_roughe); + if (ctx->vg_effector) + ptex->effector *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_effector); + if (ctx->vg_twist) + ptex->twist *= psys_interpolate_value_from_verts( + ctx->mesh, cpa_from, cpa_num, cpa_fuv, ctx->vg_twist); } /* get's hair (or keyed) particles state at the "path time" specified in state->time */ -void psys_get_particle_on_path(ParticleSimulationData *sim, int p, ParticleKey *state, const bool vel) +void psys_get_particle_on_path(ParticleSimulationData *sim, + int p, + ParticleKey *state, + const bool vel) { - PARTICLE_PSMD; - ParticleSystem *psys = sim->psys; - ParticleSettings *part = sim->psys->part; - Material *ma = give_current_material(sim->ob, part->omat); - ParticleData *pa; - ChildParticle *cpa; - ParticleTexture ptex; - ParticleKey *par = 0, keys[4], tstate; - ParticleThreadContext ctx; /* fake thread context for child modifiers */ - ParticleInterpolationData pind; - - float t; - float co[3], orco[3]; - float hairmat[4][4]; - int totpart = psys->totpart; - int totchild = psys->totchild; - short between = 0, edit = 0; - - int keyed = part->phystype & PART_PHYS_KEYED && psys->flag & PSYS_KEYED; - int cached = !keyed && part->type != PART_HAIR; - - float *cpa_fuv; int cpa_num; short cpa_from; - - /* initialize keys to zero */ - memset(keys, 0, 4 * sizeof(ParticleKey)); - - t = state->time; - CLAMP(t, 0.0f, 1.0f); - - if (p < totpart) { - /* interpolate pathcache directly if it exist */ - if (psys->pathcache) { - ParticleCacheKey result; - interpolate_pathcache(psys->pathcache[p], t, &result); - copy_v3_v3(state->co, result.co); - copy_v3_v3(state->vel, result.vel); - copy_qt_qt(state->rot, result.rot); - } - /* otherwise interpolate with other means */ - else { - pa = psys->particles + p; - - pind.keyed = keyed; - pind.cache = cached ? psys->pointcache : NULL; - pind.epoint = NULL; - pind.bspline = (psys->part->flag & PART_HAIR_BSPLINE); - /* pind.dm disabled in editmode means we don't get effectors taken into - * account when subdividing for instance */ - pind.mesh = psys_in_edit_mode(sim->depsgraph, psys) ? NULL : psys->hair_out_mesh; /* XXX Sybren EEK */ - init_particle_interpolation(sim->ob, psys, pa, &pind); - do_particle_interpolation(psys, p, pa, t, &pind, state); - - if (pind.mesh) { - mul_m4_v3(sim->ob->obmat, state->co); - mul_mat3_m4_v3(sim->ob->obmat, state->vel); - } - else if (!keyed && !cached && !(psys->flag & PSYS_GLOBAL_HAIR)) { - if ((pa->flag & PARS_REKEY) == 0) { - psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, part->from, pa, hairmat); - mul_m4_v3(hairmat, state->co); - mul_mat3_m4_v3(hairmat, state->vel); - - if (sim->psys->effectors && (part->flag & PART_CHILD_GUIDE) == 0) { - do_guides(sim->depsgraph, sim->psys->part, sim->psys->effectors, state, p, state->time); - /* TODO: proper velocity handling */ - } - - if (psys->lattice_deform_data && edit == 0) - calc_latt_deform(psys->lattice_deform_data, state->co, psys->lattice_strength); - } - } - } - } - else if (totchild) { - //invert_m4_m4(imat, ob->obmat); - - /* interpolate childcache directly if it exists */ - if (psys->childcache) { - ParticleCacheKey result; - interpolate_pathcache(psys->childcache[p - totpart], t, &result); - copy_v3_v3(state->co, result.co); - copy_v3_v3(state->vel, result.vel); - copy_qt_qt(state->rot, result.rot); - } - else { - float par_co[3], par_orco[3]; - - cpa = psys->child + p - totpart; - - if (state->time < 0.0f) - t = psys_get_child_time(psys, cpa, -state->time, NULL, NULL); - - if (totchild && part->childtype == PART_CHILD_FACES) { - /* part->parents could still be 0 so we can't test with totparent */ - between = 1; - } - if (between) { - int w = 0; - float foffset; - - /* get parent states */ - while (w < 4 && cpa->pa[w] >= 0) { - keys[w].time = state->time; - psys_get_particle_on_path(sim, cpa->pa[w], keys + w, 1); - w++; - } - - /* get the original coordinates (orco) for texture usage */ - cpa_num = cpa->num; - - foffset = cpa->foffset; - cpa_fuv = cpa->fuv; - cpa_from = PART_FROM_FACE; - - psys_particle_on_emitter(psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa->fuv, foffset, co, 0, 0, 0, orco); - - /* we need to save the actual root position of the child for positioning it accurately to the surface of the emitter */ - //copy_v3_v3(cpa_1st, co); - - //mul_m4_v3(ob->obmat, cpa_1st); - - pa = psys->particles + cpa->parent; - - psys_particle_on_emitter(psmd, part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, par_co, 0, 0, 0, par_orco); - if (part->type == PART_HAIR) - psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, psys->part->from, pa, hairmat); - else - unit_m4(hairmat); - - pa = 0; - } - else { - /* get the parent state */ - keys->time = state->time; - psys_get_particle_on_path(sim, cpa->parent, keys, 1); - - /* get the original coordinates (orco) for texture usage */ - pa = psys->particles + cpa->parent; - - cpa_from = part->from; - cpa_num = pa->num; - cpa_fuv = pa->fuv; - - psys_particle_on_emitter(psmd, part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, par_co, 0, 0, 0, par_orco); - if (part->type == PART_HAIR) { - psys_particle_on_emitter(psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa_fuv, pa->foffset, co, 0, 0, 0, orco); - psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, psys->part->from, pa, hairmat); - } - else { - copy_v3_v3(orco, cpa->fuv); - unit_m4(hairmat); - } - } - - /* get different child parameters from textures & vgroups */ - memset(&ctx, 0, sizeof(ParticleThreadContext)); - ctx.sim = *sim; - ctx.mesh = psmd->mesh_final; - ctx.ma = ma; - /* TODO: assign vertex groups */ - get_child_modifier_parameters(part, &ctx, cpa, cpa_from, cpa_num, cpa_fuv, orco, &ptex); - - if (between) { - int w = 0; - - state->co[0] = state->co[1] = state->co[2] = 0.0f; - state->vel[0] = state->vel[1] = state->vel[2] = 0.0f; - - /* child position is the weighted sum of parent positions */ - while (w < 4 && cpa->pa[w] >= 0) { - state->co[0] += cpa->w[w] * keys[w].co[0]; - state->co[1] += cpa->w[w] * keys[w].co[1]; - state->co[2] += cpa->w[w] * keys[w].co[2]; - - state->vel[0] += cpa->w[w] * keys[w].vel[0]; - state->vel[1] += cpa->w[w] * keys[w].vel[1]; - state->vel[2] += cpa->w[w] * keys[w].vel[2]; - w++; - } - /* apply offset for correct positioning */ - //add_v3_v3(state->co, cpa_1st); - } - else { - /* offset the child from the parent position */ - offset_child(cpa, keys, keys->rot, state, part->childflat, part->childrad); - } - - par = keys; - - if (vel) - copy_particle_key(&tstate, state, 1); - - /* apply different deformations to the child path */ - ParticleChildModifierContext modifier_ctx = {NULL}; - modifier_ctx.thread_ctx = NULL; - modifier_ctx.sim = sim; - modifier_ctx.ptex = &ptex; - modifier_ctx.cpa = cpa; - modifier_ctx.orco = orco; - modifier_ctx.par_co = par->co; - modifier_ctx.par_vel = par->vel; - modifier_ctx.par_rot = par->rot; - modifier_ctx.par_orco = par_orco; - modifier_ctx.parent_keys = psys->childcache ? psys->childcache[p - totpart] : NULL; - do_child_modifiers(&modifier_ctx, hairmat, state, t); - - /* try to estimate correct velocity */ - if (vel) { - ParticleKey tstate_tmp; - float length = len_v3(state->vel); - - if (t >= 0.001f) { - tstate_tmp.time = t - 0.001f; - psys_get_particle_on_path(sim, p, &tstate_tmp, 0); - sub_v3_v3v3(state->vel, state->co, tstate_tmp.co); - normalize_v3(state->vel); - } - else { - tstate_tmp.time = t + 0.001f; - psys_get_particle_on_path(sim, p, &tstate_tmp, 0); - sub_v3_v3v3(state->vel, tstate_tmp.co, state->co); - normalize_v3(state->vel); - } - - mul_v3_fl(state->vel, length); - } - } - } + PARTICLE_PSMD; + ParticleSystem *psys = sim->psys; + ParticleSettings *part = sim->psys->part; + Material *ma = give_current_material(sim->ob, part->omat); + ParticleData *pa; + ChildParticle *cpa; + ParticleTexture ptex; + ParticleKey *par = 0, keys[4], tstate; + ParticleThreadContext ctx; /* fake thread context for child modifiers */ + ParticleInterpolationData pind; + + float t; + float co[3], orco[3]; + float hairmat[4][4]; + int totpart = psys->totpart; + int totchild = psys->totchild; + short between = 0, edit = 0; + + int keyed = part->phystype & PART_PHYS_KEYED && psys->flag & PSYS_KEYED; + int cached = !keyed && part->type != PART_HAIR; + + float *cpa_fuv; + int cpa_num; + short cpa_from; + + /* initialize keys to zero */ + memset(keys, 0, 4 * sizeof(ParticleKey)); + + t = state->time; + CLAMP(t, 0.0f, 1.0f); + + if (p < totpart) { + /* interpolate pathcache directly if it exist */ + if (psys->pathcache) { + ParticleCacheKey result; + interpolate_pathcache(psys->pathcache[p], t, &result); + copy_v3_v3(state->co, result.co); + copy_v3_v3(state->vel, result.vel); + copy_qt_qt(state->rot, result.rot); + } + /* otherwise interpolate with other means */ + else { + pa = psys->particles + p; + + pind.keyed = keyed; + pind.cache = cached ? psys->pointcache : NULL; + pind.epoint = NULL; + pind.bspline = (psys->part->flag & PART_HAIR_BSPLINE); + /* pind.dm disabled in editmode means we don't get effectors taken into + * account when subdividing for instance */ + pind.mesh = psys_in_edit_mode(sim->depsgraph, psys) ? + NULL : + psys->hair_out_mesh; /* XXX Sybren EEK */ + init_particle_interpolation(sim->ob, psys, pa, &pind); + do_particle_interpolation(psys, p, pa, t, &pind, state); + + if (pind.mesh) { + mul_m4_v3(sim->ob->obmat, state->co); + mul_mat3_m4_v3(sim->ob->obmat, state->vel); + } + else if (!keyed && !cached && !(psys->flag & PSYS_GLOBAL_HAIR)) { + if ((pa->flag & PARS_REKEY) == 0) { + psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, part->from, pa, hairmat); + mul_m4_v3(hairmat, state->co); + mul_mat3_m4_v3(hairmat, state->vel); + + if (sim->psys->effectors && (part->flag & PART_CHILD_GUIDE) == 0) { + do_guides( + sim->depsgraph, sim->psys->part, sim->psys->effectors, state, p, state->time); + /* TODO: proper velocity handling */ + } + + if (psys->lattice_deform_data && edit == 0) + calc_latt_deform(psys->lattice_deform_data, state->co, psys->lattice_strength); + } + } + } + } + else if (totchild) { + //invert_m4_m4(imat, ob->obmat); + + /* interpolate childcache directly if it exists */ + if (psys->childcache) { + ParticleCacheKey result; + interpolate_pathcache(psys->childcache[p - totpart], t, &result); + copy_v3_v3(state->co, result.co); + copy_v3_v3(state->vel, result.vel); + copy_qt_qt(state->rot, result.rot); + } + else { + float par_co[3], par_orco[3]; + + cpa = psys->child + p - totpart; + + if (state->time < 0.0f) + t = psys_get_child_time(psys, cpa, -state->time, NULL, NULL); + + if (totchild && part->childtype == PART_CHILD_FACES) { + /* part->parents could still be 0 so we can't test with totparent */ + between = 1; + } + if (between) { + int w = 0; + float foffset; + + /* get parent states */ + while (w < 4 && cpa->pa[w] >= 0) { + keys[w].time = state->time; + psys_get_particle_on_path(sim, cpa->pa[w], keys + w, 1); + w++; + } + + /* get the original coordinates (orco) for texture usage */ + cpa_num = cpa->num; + + foffset = cpa->foffset; + cpa_fuv = cpa->fuv; + cpa_from = PART_FROM_FACE; + + psys_particle_on_emitter( + psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa->fuv, foffset, co, 0, 0, 0, orco); + + /* we need to save the actual root position of the child for positioning it accurately to the surface of the emitter */ + //copy_v3_v3(cpa_1st, co); + + //mul_m4_v3(ob->obmat, cpa_1st); + + pa = psys->particles + cpa->parent; + + psys_particle_on_emitter(psmd, + part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + par_co, + 0, + 0, + 0, + par_orco); + if (part->type == PART_HAIR) + psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, psys->part->from, pa, hairmat); + else + unit_m4(hairmat); + + pa = 0; + } + else { + /* get the parent state */ + keys->time = state->time; + psys_get_particle_on_path(sim, cpa->parent, keys, 1); + + /* get the original coordinates (orco) for texture usage */ + pa = psys->particles + cpa->parent; + + cpa_from = part->from; + cpa_num = pa->num; + cpa_fuv = pa->fuv; + + psys_particle_on_emitter(psmd, + part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + par_co, + 0, + 0, + 0, + par_orco); + if (part->type == PART_HAIR) { + psys_particle_on_emitter( + psmd, cpa_from, cpa_num, DMCACHE_ISCHILD, cpa_fuv, pa->foffset, co, 0, 0, 0, orco); + psys_mat_hair_to_global(sim->ob, sim->psmd->mesh_final, psys->part->from, pa, hairmat); + } + else { + copy_v3_v3(orco, cpa->fuv); + unit_m4(hairmat); + } + } + + /* get different child parameters from textures & vgroups */ + memset(&ctx, 0, sizeof(ParticleThreadContext)); + ctx.sim = *sim; + ctx.mesh = psmd->mesh_final; + ctx.ma = ma; + /* TODO: assign vertex groups */ + get_child_modifier_parameters(part, &ctx, cpa, cpa_from, cpa_num, cpa_fuv, orco, &ptex); + + if (between) { + int w = 0; + + state->co[0] = state->co[1] = state->co[2] = 0.0f; + state->vel[0] = state->vel[1] = state->vel[2] = 0.0f; + + /* child position is the weighted sum of parent positions */ + while (w < 4 && cpa->pa[w] >= 0) { + state->co[0] += cpa->w[w] * keys[w].co[0]; + state->co[1] += cpa->w[w] * keys[w].co[1]; + state->co[2] += cpa->w[w] * keys[w].co[2]; + + state->vel[0] += cpa->w[w] * keys[w].vel[0]; + state->vel[1] += cpa->w[w] * keys[w].vel[1]; + state->vel[2] += cpa->w[w] * keys[w].vel[2]; + w++; + } + /* apply offset for correct positioning */ + //add_v3_v3(state->co, cpa_1st); + } + else { + /* offset the child from the parent position */ + offset_child(cpa, keys, keys->rot, state, part->childflat, part->childrad); + } + + par = keys; + + if (vel) + copy_particle_key(&tstate, state, 1); + + /* apply different deformations to the child path */ + ParticleChildModifierContext modifier_ctx = {NULL}; + modifier_ctx.thread_ctx = NULL; + modifier_ctx.sim = sim; + modifier_ctx.ptex = &ptex; + modifier_ctx.cpa = cpa; + modifier_ctx.orco = orco; + modifier_ctx.par_co = par->co; + modifier_ctx.par_vel = par->vel; + modifier_ctx.par_rot = par->rot; + modifier_ctx.par_orco = par_orco; + modifier_ctx.parent_keys = psys->childcache ? psys->childcache[p - totpart] : NULL; + do_child_modifiers(&modifier_ctx, hairmat, state, t); + + /* try to estimate correct velocity */ + if (vel) { + ParticleKey tstate_tmp; + float length = len_v3(state->vel); + + if (t >= 0.001f) { + tstate_tmp.time = t - 0.001f; + psys_get_particle_on_path(sim, p, &tstate_tmp, 0); + sub_v3_v3v3(state->vel, state->co, tstate_tmp.co); + normalize_v3(state->vel); + } + else { + tstate_tmp.time = t + 0.001f; + psys_get_particle_on_path(sim, p, &tstate_tmp, 0); + sub_v3_v3v3(state->vel, tstate_tmp.co, state->co); + normalize_v3(state->vel); + } + + mul_v3_fl(state->vel, length); + } + } + } } /* gets particle's state at a time, returns 1 if particle exists and can be seen and 0 if not */ int psys_get_particle_state(ParticleSimulationData *sim, int p, ParticleKey *state, int always) { - ParticleSystem *psys = sim->psys; - ParticleSettings *part = psys->part; - ParticleData *pa = NULL; - ChildParticle *cpa = NULL; - float cfra; - int totpart = psys->totpart; - float timestep = psys_get_timestep(sim); - - /* negative time means "use current time" */ - cfra = state->time > 0 ? state->time : DEG_get_ctime(sim->depsgraph); - - if (p >= totpart) { - if (!psys->totchild) - return 0; - - if (part->childtype == PART_CHILD_FACES) { - if (!(psys->flag & PSYS_KEYED)) - return 0; - - cpa = psys->child + p - totpart; - - state->time = psys_get_child_time(psys, cpa, cfra, NULL, NULL); - - if (!always) { - if ((state->time < 0.0f && !(part->flag & PART_UNBORN)) || - (state->time > 1.0f && !(part->flag & PART_DIED))) - { - return 0; - } - } - - state->time = (cfra - (part->sta + (part->end - part->sta) * psys_frand(psys, p + 23))) / (part->lifetime * psys_frand(psys, p + 24)); - - psys_get_particle_on_path(sim, p, state, 1); - return 1; - } - else { - cpa = sim->psys->child + p - totpart; - pa = sim->psys->particles + cpa->parent; - } - } - else { - pa = sim->psys->particles + p; - } - - if (pa) { - if (!always) { - if ((cfra < pa->time && (part->flag & PART_UNBORN) == 0) || - (cfra >= pa->dietime && (part->flag & PART_DIED) == 0)) - { - return 0; - } - } - - cfra = MIN2(cfra, pa->dietime); - } - - if (sim->psys->flag & PSYS_KEYED) { - state->time = -cfra; - psys_get_particle_on_path(sim, p, state, 1); - return 1; - } - else { - if (cpa) { - float mat[4][4]; - ParticleKey *key1; - float t = (cfra - pa->time) / pa->lifetime; - float par_orco[3] = {0.0f, 0.0f, 0.0f}; - - key1 = &pa->state; - offset_child(cpa, key1, key1->rot, state, part->childflat, part->childrad); - - CLAMP(t, 0.0f, 1.0f); - - unit_m4(mat); - ParticleChildModifierContext modifier_ctx = {NULL}; - modifier_ctx.thread_ctx = NULL; - modifier_ctx.sim = sim; - modifier_ctx.ptex = NULL; - modifier_ctx.cpa = cpa; - modifier_ctx.orco = cpa->fuv; - modifier_ctx.par_co = key1->co; - modifier_ctx.par_vel = key1->vel; - modifier_ctx.par_rot = key1->rot; - modifier_ctx.par_orco = par_orco; - modifier_ctx.parent_keys = psys->childcache ? psys->childcache[p - totpart] : NULL; - - do_child_modifiers(&modifier_ctx, mat, state, t); - - if (psys->lattice_deform_data) - calc_latt_deform(psys->lattice_deform_data, state->co, psys->lattice_strength); - } - else { - if (pa->state.time == cfra || ELEM(part->phystype, PART_PHYS_NO, PART_PHYS_KEYED)) - copy_particle_key(state, &pa->state, 1); - else if (pa->prev_state.time == cfra) - copy_particle_key(state, &pa->prev_state, 1); - else { - float dfra, frs_sec = sim->scene->r.frs_sec; - /* let's interpolate to try to be as accurate as possible */ - if (pa->state.time + 2.f >= state->time && pa->prev_state.time - 2.f <= state->time) { - if (pa->prev_state.time >= pa->state.time || pa->prev_state.time < 0.f) { - /* prev_state is wrong so let's not use it, this can happen at frames 1, 0 or particle birth */ - dfra = state->time - pa->state.time; - - copy_particle_key(state, &pa->state, 1); - - madd_v3_v3v3fl(state->co, state->co, state->vel, dfra / frs_sec); - } - else { - ParticleKey keys[4]; - float keytime; - - copy_particle_key(keys + 1, &pa->prev_state, 1); - copy_particle_key(keys + 2, &pa->state, 1); - - dfra = keys[2].time - keys[1].time; - - keytime = (state->time - keys[1].time) / dfra; - - /* convert velocity to timestep size */ - mul_v3_fl(keys[1].vel, dfra * timestep); - mul_v3_fl(keys[2].vel, dfra * timestep); - - psys_interpolate_particle(-1, keys, keytime, state, 1); - - /* convert back to real velocity */ - mul_v3_fl(state->vel, 1.f / (dfra * timestep)); - - interp_v3_v3v3(state->ave, keys[1].ave, keys[2].ave, keytime); - interp_qt_qtqt(state->rot, keys[1].rot, keys[2].rot, keytime); - } - } - else if (pa->state.time + 1.f >= state->time && pa->state.time - 1.f <= state->time) { - /* linear interpolation using only pa->state */ - - dfra = state->time - pa->state.time; - - copy_particle_key(state, &pa->state, 1); - - madd_v3_v3v3fl(state->co, state->co, state->vel, dfra / frs_sec); - } - else { - /* extrapolating over big ranges is not accurate so let's just give something close to reasonable back */ - copy_particle_key(state, &pa->state, 0); - } - } - - if (sim->psys->lattice_deform_data) - calc_latt_deform(sim->psys->lattice_deform_data, state->co, psys->lattice_strength); - } - - return 1; - } + ParticleSystem *psys = sim->psys; + ParticleSettings *part = psys->part; + ParticleData *pa = NULL; + ChildParticle *cpa = NULL; + float cfra; + int totpart = psys->totpart; + float timestep = psys_get_timestep(sim); + + /* negative time means "use current time" */ + cfra = state->time > 0 ? state->time : DEG_get_ctime(sim->depsgraph); + + if (p >= totpart) { + if (!psys->totchild) + return 0; + + if (part->childtype == PART_CHILD_FACES) { + if (!(psys->flag & PSYS_KEYED)) + return 0; + + cpa = psys->child + p - totpart; + + state->time = psys_get_child_time(psys, cpa, cfra, NULL, NULL); + + if (!always) { + if ((state->time < 0.0f && !(part->flag & PART_UNBORN)) || + (state->time > 1.0f && !(part->flag & PART_DIED))) { + return 0; + } + } + + state->time = (cfra - (part->sta + (part->end - part->sta) * psys_frand(psys, p + 23))) / + (part->lifetime * psys_frand(psys, p + 24)); + + psys_get_particle_on_path(sim, p, state, 1); + return 1; + } + else { + cpa = sim->psys->child + p - totpart; + pa = sim->psys->particles + cpa->parent; + } + } + else { + pa = sim->psys->particles + p; + } + + if (pa) { + if (!always) { + if ((cfra < pa->time && (part->flag & PART_UNBORN) == 0) || + (cfra >= pa->dietime && (part->flag & PART_DIED) == 0)) { + return 0; + } + } + + cfra = MIN2(cfra, pa->dietime); + } + + if (sim->psys->flag & PSYS_KEYED) { + state->time = -cfra; + psys_get_particle_on_path(sim, p, state, 1); + return 1; + } + else { + if (cpa) { + float mat[4][4]; + ParticleKey *key1; + float t = (cfra - pa->time) / pa->lifetime; + float par_orco[3] = {0.0f, 0.0f, 0.0f}; + + key1 = &pa->state; + offset_child(cpa, key1, key1->rot, state, part->childflat, part->childrad); + + CLAMP(t, 0.0f, 1.0f); + + unit_m4(mat); + ParticleChildModifierContext modifier_ctx = {NULL}; + modifier_ctx.thread_ctx = NULL; + modifier_ctx.sim = sim; + modifier_ctx.ptex = NULL; + modifier_ctx.cpa = cpa; + modifier_ctx.orco = cpa->fuv; + modifier_ctx.par_co = key1->co; + modifier_ctx.par_vel = key1->vel; + modifier_ctx.par_rot = key1->rot; + modifier_ctx.par_orco = par_orco; + modifier_ctx.parent_keys = psys->childcache ? psys->childcache[p - totpart] : NULL; + + do_child_modifiers(&modifier_ctx, mat, state, t); + + if (psys->lattice_deform_data) + calc_latt_deform(psys->lattice_deform_data, state->co, psys->lattice_strength); + } + else { + if (pa->state.time == cfra || ELEM(part->phystype, PART_PHYS_NO, PART_PHYS_KEYED)) + copy_particle_key(state, &pa->state, 1); + else if (pa->prev_state.time == cfra) + copy_particle_key(state, &pa->prev_state, 1); + else { + float dfra, frs_sec = sim->scene->r.frs_sec; + /* let's interpolate to try to be as accurate as possible */ + if (pa->state.time + 2.f >= state->time && pa->prev_state.time - 2.f <= state->time) { + if (pa->prev_state.time >= pa->state.time || pa->prev_state.time < 0.f) { + /* prev_state is wrong so let's not use it, this can happen at frames 1, 0 or particle birth */ + dfra = state->time - pa->state.time; + + copy_particle_key(state, &pa->state, 1); + + madd_v3_v3v3fl(state->co, state->co, state->vel, dfra / frs_sec); + } + else { + ParticleKey keys[4]; + float keytime; + + copy_particle_key(keys + 1, &pa->prev_state, 1); + copy_particle_key(keys + 2, &pa->state, 1); + + dfra = keys[2].time - keys[1].time; + + keytime = (state->time - keys[1].time) / dfra; + + /* convert velocity to timestep size */ + mul_v3_fl(keys[1].vel, dfra * timestep); + mul_v3_fl(keys[2].vel, dfra * timestep); + + psys_interpolate_particle(-1, keys, keytime, state, 1); + + /* convert back to real velocity */ + mul_v3_fl(state->vel, 1.f / (dfra * timestep)); + + interp_v3_v3v3(state->ave, keys[1].ave, keys[2].ave, keytime); + interp_qt_qtqt(state->rot, keys[1].rot, keys[2].rot, keytime); + } + } + else if (pa->state.time + 1.f >= state->time && pa->state.time - 1.f <= state->time) { + /* linear interpolation using only pa->state */ + + dfra = state->time - pa->state.time; + + copy_particle_key(state, &pa->state, 1); + + madd_v3_v3v3fl(state->co, state->co, state->vel, dfra / frs_sec); + } + else { + /* extrapolating over big ranges is not accurate so let's just give something close to reasonable back */ + copy_particle_key(state, &pa->state, 0); + } + } + + if (sim->psys->lattice_deform_data) + calc_latt_deform(sim->psys->lattice_deform_data, state->co, psys->lattice_strength); + } + + return 1; + } } -void psys_get_dupli_texture(ParticleSystem *psys, ParticleSettings *part, - ParticleSystemModifierData *psmd, ParticleData *pa, ChildParticle *cpa, - float uv[2], float orco[3]) +void psys_get_dupli_texture(ParticleSystem *psys, + ParticleSettings *part, + ParticleSystemModifierData *psmd, + ParticleData *pa, + ChildParticle *cpa, + float uv[2], + float orco[3]) { - MFace *mface; - MTFace *mtface; - float loc[3]; - int num; - - /* XXX: on checking '(psmd->dm != NULL)' - * This is incorrect but needed for metaball evaluation. - * Ideally this would be calculated via the depsgraph, however with metaballs, - * the entire scenes dupli's are scanned, which also looks into uncalculated data. - * - * For now just include this workaround as an alternative to crashing, - * but longer term metaballs should behave in a more manageable way, see: T46622. */ - - uv[0] = uv[1] = 0.f; - - /* Grid distribution doesn't support UV or emit from vertex mode */ - bool is_grid = (part->distr == PART_DISTR_GRID && part->from != PART_FROM_VERT); - - if (cpa) { - if ((part->childtype == PART_CHILD_FACES) && (psmd->mesh_final != NULL)) { - CustomData *mtf_data = &psmd->mesh_final->fdata; - const int uv_idx = CustomData_get_render_layer(mtf_data, CD_MTFACE); - mtface = CustomData_get_layer_n(mtf_data, CD_MTFACE, uv_idx); - - if (mtface && !is_grid) { - mface = CustomData_get(&psmd->mesh_final->fdata, cpa->num, CD_MFACE); - mtface += cpa->num; - psys_interpolate_uvs(mtface, mface->v4, cpa->fuv, uv); - } - - psys_particle_on_emitter(psmd, PART_FROM_FACE, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, loc, 0, 0, 0, orco); - return; - } - else { - pa = psys->particles + cpa->pa[0]; - } - } - - if ((part->from == PART_FROM_FACE) && (psmd->mesh_final != NULL) && !is_grid) { - CustomData *mtf_data = &psmd->mesh_final->fdata; - const int uv_idx = CustomData_get_render_layer(mtf_data, CD_MTFACE); - mtface = CustomData_get_layer_n(mtf_data, CD_MTFACE, uv_idx); - - num = pa->num_dmcache; - - if (num == DMCACHE_NOTFOUND) - num = pa->num; - - if (num >= psmd->mesh_final->totface) { - /* happens when simplify is enabled - * gives invalid coords but would crash otherwise */ - num = DMCACHE_NOTFOUND; - } - - if (mtface && !ELEM(num, DMCACHE_NOTFOUND, DMCACHE_ISCHILD)) { - mface = CustomData_get(&psmd->mesh_final->fdata, num, CD_MFACE); - mtface += num; - psys_interpolate_uvs(mtface, mface->v4, pa->fuv, uv); - } - } - - psys_particle_on_emitter(psmd, part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, loc, 0, 0, 0, orco); + MFace *mface; + MTFace *mtface; + float loc[3]; + int num; + + /* XXX: on checking '(psmd->dm != NULL)' + * This is incorrect but needed for metaball evaluation. + * Ideally this would be calculated via the depsgraph, however with metaballs, + * the entire scenes dupli's are scanned, which also looks into uncalculated data. + * + * For now just include this workaround as an alternative to crashing, + * but longer term metaballs should behave in a more manageable way, see: T46622. */ + + uv[0] = uv[1] = 0.f; + + /* Grid distribution doesn't support UV or emit from vertex mode */ + bool is_grid = (part->distr == PART_DISTR_GRID && part->from != PART_FROM_VERT); + + if (cpa) { + if ((part->childtype == PART_CHILD_FACES) && (psmd->mesh_final != NULL)) { + CustomData *mtf_data = &psmd->mesh_final->fdata; + const int uv_idx = CustomData_get_render_layer(mtf_data, CD_MTFACE); + mtface = CustomData_get_layer_n(mtf_data, CD_MTFACE, uv_idx); + + if (mtface && !is_grid) { + mface = CustomData_get(&psmd->mesh_final->fdata, cpa->num, CD_MFACE); + mtface += cpa->num; + psys_interpolate_uvs(mtface, mface->v4, cpa->fuv, uv); + } + + psys_particle_on_emitter(psmd, + PART_FROM_FACE, + cpa->num, + DMCACHE_ISCHILD, + cpa->fuv, + cpa->foffset, + loc, + 0, + 0, + 0, + orco); + return; + } + else { + pa = psys->particles + cpa->pa[0]; + } + } + + if ((part->from == PART_FROM_FACE) && (psmd->mesh_final != NULL) && !is_grid) { + CustomData *mtf_data = &psmd->mesh_final->fdata; + const int uv_idx = CustomData_get_render_layer(mtf_data, CD_MTFACE); + mtface = CustomData_get_layer_n(mtf_data, CD_MTFACE, uv_idx); + + num = pa->num_dmcache; + + if (num == DMCACHE_NOTFOUND) + num = pa->num; + + if (num >= psmd->mesh_final->totface) { + /* happens when simplify is enabled + * gives invalid coords but would crash otherwise */ + num = DMCACHE_NOTFOUND; + } + + if (mtface && !ELEM(num, DMCACHE_NOTFOUND, DMCACHE_ISCHILD)) { + mface = CustomData_get(&psmd->mesh_final->fdata, num, CD_MFACE); + mtface += num; + psys_interpolate_uvs(mtface, mface->v4, pa->fuv, uv); + } + } + + psys_particle_on_emitter( + psmd, part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, loc, 0, 0, 0, orco); } -void psys_get_dupli_path_transform(ParticleSimulationData *sim, ParticleData *pa, ChildParticle *cpa, ParticleCacheKey *cache, float mat[4][4], float *scale) +void psys_get_dupli_path_transform(ParticleSimulationData *sim, + ParticleData *pa, + ChildParticle *cpa, + ParticleCacheKey *cache, + float mat[4][4], + float *scale) { - Object *ob = sim->ob; - ParticleSystem *psys = sim->psys; - ParticleSystemModifierData *psmd = sim->psmd; - float loc[3], nor[3], vec[3], side[3], len; - float xvec[3] = {-1.0, 0.0, 0.0}, nmat[3][3]; - - sub_v3_v3v3(vec, (cache + cache->segments)->co, cache->co); - len = normalize_v3(vec); - - if (pa == NULL && psys->part->childflat != PART_CHILD_FACES) - pa = psys->particles + cpa->pa[0]; - - if (pa) - psys_particle_on_emitter(psmd, sim->psys->part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, loc, nor, 0, 0, 0); - else - psys_particle_on_emitter(psmd, PART_FROM_FACE, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, loc, nor, 0, 0, 0); - - if (psys->part->rotmode == PART_ROT_VEL) { - transpose_m3_m4(nmat, ob->imat); - mul_m3_v3(nmat, nor); - normalize_v3(nor); - - /* make sure that we get a proper side vector */ - if (fabsf(dot_v3v3(nor, vec)) > 0.999999f) { - if (fabsf(dot_v3v3(nor, xvec)) > 0.999999f) { - nor[0] = 0.0f; - nor[1] = 1.0f; - nor[2] = 0.0f; - } - else { - nor[0] = 1.0f; - nor[1] = 0.0f; - nor[2] = 0.0f; - } - } - cross_v3_v3v3(side, nor, vec); - normalize_v3(side); - - /* rotate side vector around vec */ - if (psys->part->phasefac != 0) { - float q_phase[4]; - float phasefac = psys->part->phasefac; - if (psys->part->randphasefac != 0.0f) - phasefac += psys->part->randphasefac * psys_frand(psys, (pa - psys->particles) + 20); - axis_angle_to_quat(q_phase, vec, phasefac * (float)M_PI); - - mul_qt_v3(q_phase, side); - } - - cross_v3_v3v3(nor, vec, side); - - unit_m4(mat); - copy_v3_v3(mat[0], vec); - copy_v3_v3(mat[1], side); - copy_v3_v3(mat[2], nor); - } - else { - quat_to_mat4(mat, pa->state.rot); - } - - *scale = len; + Object *ob = sim->ob; + ParticleSystem *psys = sim->psys; + ParticleSystemModifierData *psmd = sim->psmd; + float loc[3], nor[3], vec[3], side[3], len; + float xvec[3] = {-1.0, 0.0, 0.0}, nmat[3][3]; + + sub_v3_v3v3(vec, (cache + cache->segments)->co, cache->co); + len = normalize_v3(vec); + + if (pa == NULL && psys->part->childflat != PART_CHILD_FACES) + pa = psys->particles + cpa->pa[0]; + + if (pa) + psys_particle_on_emitter(psmd, + sim->psys->part->from, + pa->num, + pa->num_dmcache, + pa->fuv, + pa->foffset, + loc, + nor, + 0, + 0, + 0); + else + psys_particle_on_emitter(psmd, + PART_FROM_FACE, + cpa->num, + DMCACHE_ISCHILD, + cpa->fuv, + cpa->foffset, + loc, + nor, + 0, + 0, + 0); + + if (psys->part->rotmode == PART_ROT_VEL) { + transpose_m3_m4(nmat, ob->imat); + mul_m3_v3(nmat, nor); + normalize_v3(nor); + + /* make sure that we get a proper side vector */ + if (fabsf(dot_v3v3(nor, vec)) > 0.999999f) { + if (fabsf(dot_v3v3(nor, xvec)) > 0.999999f) { + nor[0] = 0.0f; + nor[1] = 1.0f; + nor[2] = 0.0f; + } + else { + nor[0] = 1.0f; + nor[1] = 0.0f; + nor[2] = 0.0f; + } + } + cross_v3_v3v3(side, nor, vec); + normalize_v3(side); + + /* rotate side vector around vec */ + if (psys->part->phasefac != 0) { + float q_phase[4]; + float phasefac = psys->part->phasefac; + if (psys->part->randphasefac != 0.0f) + phasefac += psys->part->randphasefac * psys_frand(psys, (pa - psys->particles) + 20); + axis_angle_to_quat(q_phase, vec, phasefac * (float)M_PI); + + mul_qt_v3(q_phase, side); + } + + cross_v3_v3v3(nor, vec, side); + + unit_m4(mat); + copy_v3_v3(mat[0], vec); + copy_v3_v3(mat[1], side); + copy_v3_v3(mat[2], nor); + } + else { + quat_to_mat4(mat, pa->state.rot); + } + + *scale = len; } void psys_apply_hair_lattice(Depsgraph *depsgraph, Scene *scene, Object *ob, ParticleSystem *psys) { - ParticleSimulationData sim = {0}; - sim.depsgraph = depsgraph; - sim.scene = scene; - sim.ob = ob; - sim.psys = psys; - sim.psmd = psys_get_modifier(ob, psys); - - psys->lattice_deform_data = psys_create_lattice_deform_data(&sim); - - if (psys->lattice_deform_data) { - ParticleData *pa = psys->particles; - HairKey *hkey; - int p, h; - float hairmat[4][4], imat[4][4]; - - for (p = 0; p < psys->totpart; p++, pa++) { - psys_mat_hair_to_global(sim.ob, sim.psmd->mesh_final, psys->part->from, pa, hairmat); - invert_m4_m4(imat, hairmat); - - hkey = pa->hair; - for (h = 0; h < pa->totkey; h++, hkey++) { - mul_m4_v3(hairmat, hkey->co); - calc_latt_deform(psys->lattice_deform_data, hkey->co, psys->lattice_strength); - mul_m4_v3(imat, hkey->co); - } - } - - end_latt_deform(psys->lattice_deform_data); - psys->lattice_deform_data = NULL; - - /* protect the applied shape */ - psys->flag |= PSYS_EDITED; - } + ParticleSimulationData sim = {0}; + sim.depsgraph = depsgraph; + sim.scene = scene; + sim.ob = ob; + sim.psys = psys; + sim.psmd = psys_get_modifier(ob, psys); + + psys->lattice_deform_data = psys_create_lattice_deform_data(&sim); + + if (psys->lattice_deform_data) { + ParticleData *pa = psys->particles; + HairKey *hkey; + int p, h; + float hairmat[4][4], imat[4][4]; + + for (p = 0; p < psys->totpart; p++, pa++) { + psys_mat_hair_to_global(sim.ob, sim.psmd->mesh_final, psys->part->from, pa, hairmat); + invert_m4_m4(imat, hairmat); + + hkey = pa->hair; + for (h = 0; h < pa->totkey; h++, hkey++) { + mul_m4_v3(hairmat, hkey->co); + calc_latt_deform(psys->lattice_deform_data, hkey->co, psys->lattice_strength); + mul_m4_v3(imat, hkey->co); + } + } + + end_latt_deform(psys->lattice_deform_data); + psys->lattice_deform_data = NULL; + + /* protect the applied shape */ + psys->flag |= PSYS_EDITED; + } } - - /* Draw Engine */ void (*BKE_particle_batch_cache_dirty_tag_cb)(ParticleSystem *psys, int mode) = NULL; void (*BKE_particle_batch_cache_free_cb)(ParticleSystem *psys) = NULL; void BKE_particle_batch_cache_dirty_tag(ParticleSystem *psys, int mode) { - if (psys->batch_cache) { - BKE_particle_batch_cache_dirty_tag_cb(psys, mode); - } + if (psys->batch_cache) { + BKE_particle_batch_cache_dirty_tag_cb(psys, mode); + } } void BKE_particle_batch_cache_free(ParticleSystem *psys) { - if (psys->batch_cache) { - BKE_particle_batch_cache_free_cb(psys); - } + if (psys->batch_cache) { + BKE_particle_batch_cache_free_cb(psys); + } } |