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Diffstat (limited to 'source/blender/blenkernel/intern/particle.c')
| -rw-r--r-- | source/blender/blenkernel/intern/particle.c | 4336 |
1 files changed, 0 insertions, 4336 deletions
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c deleted file mode 100644 index 098700495a0..00000000000 --- a/source/blender/blenkernel/intern/particle.c +++ /dev/null @@ -1,4336 +0,0 @@ -/* - * ***** BEGIN GPL LICENSE BLOCK ***** - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * The Original Code is Copyright (C) 2007 by Janne Karhu. - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): none yet. - * - * ***** END GPL LICENSE BLOCK ***** - */ - -/** \file blender/blenkernel/intern/particle.c - * \ingroup bke - */ - - -#include <stdlib.h> -#include <math.h> -#include <string.h> - -#include "MEM_guardedalloc.h" - -#include "DNA_curve_types.h" -#include "DNA_group_types.h" -#include "DNA_key_types.h" -#include "DNA_material_types.h" -#include "DNA_mesh_types.h" -#include "DNA_meshdata_types.h" -#include "DNA_particle_types.h" -#include "DNA_smoke_types.h" -#include "DNA_scene_types.h" -#include "DNA_dynamicpaint_types.h" - -#include "BLI_blenlib.h" -#include "BLI_noise.h" -#include "BLI_math.h" -#include "BLI_utildefines.h" -#include "BLI_kdtree.h" -#include "BLI_rand.h" -#include "BLI_task.h" -#include "BLI_threads.h" -#include "BLI_linklist.h" - -#include "BLT_translation.h" - -#include "BKE_anim.h" -#include "BKE_animsys.h" - -#include "BKE_boids.h" -#include "BKE_cloth.h" -#include "BKE_colortools.h" -#include "BKE_effect.h" -#include "BKE_global.h" -#include "BKE_group.h" -#include "BKE_main.h" -#include "BKE_lattice.h" - -#include "BKE_displist.h" -#include "BKE_particle.h" -#include "BKE_material.h" -#include "BKE_key.h" -#include "BKE_library.h" -#include "BKE_depsgraph.h" -#include "BKE_modifier.h" -#include "BKE_mesh.h" -#include "BKE_cdderivedmesh.h" -#include "BKE_pointcache.h" -#include "BKE_scene.h" -#include "BKE_deform.h" - -#include "RE_render_ext.h" - -unsigned int PSYS_FRAND_SEED_OFFSET[PSYS_FRAND_COUNT]; -unsigned int PSYS_FRAND_SEED_MULTIPLIER[PSYS_FRAND_COUNT]; -float PSYS_FRAND_BASE[PSYS_FRAND_COUNT]; - -void psys_init_rng(void) -{ - int i; - BLI_srandom(5831); /* arbitrary */ - for (i = 0; i < PSYS_FRAND_COUNT; ++i) { - PSYS_FRAND_BASE[i] = BLI_frand(); - PSYS_FRAND_SEED_OFFSET[i] = (unsigned int)BLI_rand(); - PSYS_FRAND_SEED_MULTIPLIER[i] = (unsigned int)BLI_rand(); - } -} - -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(DerivedMesh *dm, ParticleSystem *psys, ParticleSettings *part, ParticleData *par, - int child_index, int face_index, const float fw[4], float *orco, ParticleTexture *ptex, int event, float cfra); -extern void do_child_modifiers(ParticleThreadContext *ctx, ParticleSimulationData *sim, - ParticleTexture *ptex, const float par_co[3], const float par_vel[3], const float par_rot[4], const float par_orco[3], - ChildParticle *cpa, const float orco[3], float mat[4][4], ParticleKey *state, float t); - -/* 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; -} -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; -} -/* we allocate path cache memory in chunks instead of a big contiguous - * chunk, windows' memory allocater fails to find big blocks of memory often */ - -#define PATH_CACHE_BUF_SIZE 1024 - -static ParticleCacheKey **psys_alloc_path_cache_buffers(ListBase *bufs, int tot, int totkeys) -{ - LinkData *buf; - ParticleCacheKey **cache; - int i, totkey, totbufkey; - - 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"); - - for (i = 0; i < totbufkey; i++) - cache[totkey + i] = ((ParticleCacheKey *)buf->data) + i * totkeys; - - totkey += totbufkey; - BLI_addtail(bufs, buf); - } - - return cache; -} - -static void psys_free_path_cache_buffers(ParticleCacheKey **cache, ListBase *bufs) -{ - LinkData *buf; - - if (cache) - MEM_freeN(cache); - - for (buf = bufs->first; buf; buf = buf->next) - MEM_freeN(buf->data); - BLI_freelistN(bufs); -} - -/************************************************/ -/* Getting stuff */ -/************************************************/ -/* get object's active particle system safely */ -ParticleSystem *psys_get_current(Object *ob) -{ - ParticleSystem *psys; - if (ob == NULL) return NULL; - - for (psys = ob->particlesystem.first; psys; psys = psys->next) { - if (psys->flag & PSYS_CURRENT) - return psys; - } - - return NULL; -} -short psys_get_current_num(Object *ob) -{ - ParticleSystem *psys; - short i; - - if (ob == NULL) return 0; - - for (psys = ob->particlesystem.first, i = 0; psys; psys = psys->next, i++) - if (psys->flag & PSYS_CURRENT) - 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; - } -} - -#if 0 /* UNUSED */ -Object *psys_find_object(Scene *scene, ParticleSystem *psys) -{ - Base *base; - ParticleSystem *tpsys; - - for (base = scene->base.first; base; base = base->next) { - for (tpsys = base->object->particlesystem.first; psys; psys = psys->next) { - if (tpsys == psys) - return base->object; - } - } - - return NULL; -} -#endif - -struct LatticeDeformData *psys_create_lattice_deform_data(ParticleSimulationData *sim) -{ - struct LatticeDeformData *lattice_deform_data = NULL; - - if (psys_in_edit_mode(sim->scene, sim->psys) == 0) { - Object *lattice = NULL; - ModifierData *md = (ModifierData *)psys_get_modifier(sim->ob, sim->psys); - - for (; md; md = md->next) { - if (md->type == eModifierType_Lattice) { - LatticeModifierData *lmd = (LatticeModifierData *)md; - lattice = lmd->object; - 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; - - for (; psys; psys = psys->next) - psys->flag |= PSYS_DISABLED; -} -void psys_enable_all(Object *ob) -{ - ParticleSystem *psys = ob->particlesystem.first; - - for (; psys; psys = psys->next) - psys->flag &= ~PSYS_DISABLED; -} -bool psys_in_edit_mode(Scene *scene, ParticleSystem *psys) -{ - return (scene->basact && (scene->basact->object->mode & OB_MODE_PARTICLE_EDIT) && psys == psys_get_current((scene->basact)->object) && (psys->edit || psys->pointcache->edit) && !psys->renderdata); -} -bool psys_check_enabled(Object *ob, ParticleSystem *psys) -{ - ParticleSystemModifierData *psmd; - - if (psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE || !psys->part) - return 0; - - psmd = psys_get_modifier(ob, psys); - if (psys->renderdata || G.is_rendering) { - if (!(psmd->modifier.mode & eModifierMode_Render)) - return 0; - } - else if (!(psmd->modifier.mode & eModifierMode_Realtime)) - return 0; - - 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); -} - -void psys_check_group_weights(ParticleSettings *part) -{ - ParticleDupliWeight *dw, *tdw; - GroupObject *go; - int current = 0; - - if (part->ren_as == PART_DRAW_GR && part->dup_group && part->dup_group->gobject.first) { - /* first remove all weights that don't have an object in the group */ - dw = part->dupliweights.first; - while (dw) { - if (!BKE_group_object_exists(part->dup_group, dw->ob)) { - tdw = dw->next; - BLI_freelinkN(&part->dupliweights, dw); - dw = tdw; - } - else - dw = dw->next; - } - - /* then add objects in the group to new list */ - go = part->dup_group->gobject.first; - while (go) { - dw = part->dupliweights.first; - while (dw && dw->ob != go->ob) - dw = dw->next; - - if (!dw) { - dw = MEM_callocN(sizeof(ParticleDupliWeight), "ParticleDupliWeight"); - dw->ob = go->ob; - dw->count = 1; - BLI_addtail(&part->dupliweights, dw); - } - - go = go->next; - } - - dw = part->dupliweights.first; - for (; dw; dw = dw->next) { - if (dw->flag & PART_DUPLIW_CURRENT) { - current = 1; - break; - } - } - - if (!current) { - dw = part->dupliweights.first; - if (dw) - dw->flag |= PART_DUPLIW_CURRENT; - } - } - else { - BLI_freelistN(&part->dupliweights); - } -} -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; -} -/************************************************/ -/* Freeing stuff */ -/************************************************/ -static void fluid_free_settings(SPHFluidSettings *fluid) -{ - if (fluid) - MEM_freeN(fluid); -} - -void BKE_particlesettings_free(ParticleSettings *part) -{ - MTex *mtex; - int a; - BKE_animdata_free(&part->id); - - if (part->clumpcurve) - curvemapping_free(part->clumpcurve); - if (part->roughcurve) - curvemapping_free(part->roughcurve); - - free_partdeflect(part->pd); - free_partdeflect(part->pd2); - - if (part->effector_weights) - MEM_freeN(part->effector_weights); - - BLI_freelistN(&part->dupliweights); - - boid_free_settings(part->boids); - fluid_free_settings(part->fluid); - - for (a = 0; a < MAX_MTEX; a++) { - mtex = part->mtex[a]; - if (mtex && mtex->tex) - id_us_min(&mtex->tex->id); - if (mtex) - MEM_freeN(mtex); - } -} - -void free_hair(Object *UNUSED(ob), 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) { - BKE_ptcache_free_list(&psys->ptcaches); - psys->pointcache = NULL; - - modifier_free((ModifierData *)psys->clmd); - - psys->clmd = NULL; - psys->pointcache = BKE_ptcache_add(&psys->ptcaches); - } - else { - cloth_free_modifier(psys->clmd); - } - } - - if (psys->hair_in_dm) - psys->hair_in_dm->release(psys->hair_in_dm); - psys->hair_in_dm = NULL; - - if (psys->hair_out_dm) - psys->hair_out_dm->release(psys->hair_out_dm); - psys->hair_out_dm = 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; - } - } - } -} -static void free_child_path_cache(ParticleSystem *psys) -{ - 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); - } -} -void psys_free_children(ParticleSystem *psys) -{ - if (psys->child) { - MEM_freeN(psys->child); - psys->child = NULL; - psys->totchild = 0; - } - - free_child_path_cache(psys); -} -void psys_free_particles(ParticleSystem *psys) -{ - PARTICLE_P; - - if (psys->particles) { - if (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->tot_vec_size = 0; - } -} -/* free everything */ -void psys_free(Object *ob, ParticleSystem *psys) -{ - if (psys) { - int nr = 0; - ParticleSystem *tpsys; - - psys_free_path_cache(psys, NULL); - - free_hair(ob, psys, 1); - - 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; - - if (psys->part) { - id_us_min(&psys->part->id); - psys->part = NULL; - } - - BKE_ptcache_free_list(&psys->ptcaches); - psys->pointcache = NULL; - - BLI_freelistN(&psys->targets); - - BLI_bvhtree_free(psys->bvhtree); - BLI_kdtree_free(psys->tree); - - if (psys->fluid_springs) - MEM_freeN(psys->fluid_springs); - - pdEndEffectors(&psys->effectors); - - if (psys->pdd) { - psys_free_pdd(psys); - MEM_freeN(psys->pdd); - } - - MEM_freeN(psys); - } -} - -/************************************************/ -/* Rendering */ -/************************************************/ -/* these functions move away particle data and bring it back after - * rendering, to make different render settings possible without - * removing the previous data. this should be solved properly once */ - -void psys_render_set(Object *ob, ParticleSystem *psys, float viewmat[4][4], float winmat[4][4], int winx, int winy, int timeoffset) -{ - ParticleRenderData *data; - ParticleSystemModifierData *psmd = psys_get_modifier(ob, psys); - - if (psys->renderdata) - return; - - data = MEM_callocN(sizeof(ParticleRenderData), "ParticleRenderData"); - - data->child = psys->child; - data->totchild = psys->totchild; - data->pathcache = psys->pathcache; - data->pathcachebufs.first = psys->pathcachebufs.first; - data->pathcachebufs.last = psys->pathcachebufs.last; - data->totcached = psys->totcached; - data->childcache = psys->childcache; - data->childcachebufs.first = psys->childcachebufs.first; - data->childcachebufs.last = psys->childcachebufs.last; - data->totchildcache = psys->totchildcache; - - if (psmd->dm_final) - data->dm = CDDM_copy(psmd->dm_final); - data->totdmvert = psmd->totdmvert; - data->totdmedge = psmd->totdmedge; - data->totdmface = psmd->totdmface; - - psys->child = NULL; - psys->pathcache = NULL; - psys->childcache = NULL; - psys->totchild = psys->totcached = psys->totchildcache = 0; - BLI_listbase_clear(&psys->pathcachebufs); - BLI_listbase_clear(&psys->childcachebufs); - - copy_m4_m4(data->winmat, winmat); - mul_m4_m4m4(data->viewmat, viewmat, ob->obmat); - mul_m4_m4m4(data->mat, winmat, data->viewmat); - data->winx = winx; - data->winy = winy; - - data->timeoffset = timeoffset; - - psys->renderdata = data; - - /* Hair can and has to be recalculated if everything isn't displayed. */ - if (psys->part->disp != 100 && psys->part->type == PART_HAIR) - psys->recalc |= PSYS_RECALC_RESET; -} - -void psys_render_restore(Object *ob, ParticleSystem *psys) -{ - ParticleRenderData *data; - ParticleSystemModifierData *psmd = psys_get_modifier(ob, psys); - float render_disp = psys_get_current_display_percentage(psys); - float disp; - - data = psys->renderdata; - if (!data) - return; - - if (data->elems) - MEM_freeN(data->elems); - - if (psmd->dm_final) { - psmd->dm_final->needsFree = 1; - psmd->dm_final->release(psmd->dm_final); - } - if (psmd->dm_deformed) { - psmd->dm_deformed->needsFree = 1; - psmd->dm_deformed->release(psmd->dm_deformed); - psmd->dm_deformed = NULL; - } - - psys_free_path_cache(psys, NULL); - - if (psys->child) { - MEM_freeN(psys->child); - psys->child = 0; - psys->totchild = 0; - } - - psys->child = data->child; - psys->totchild = data->totchild; - psys->pathcache = data->pathcache; - psys->pathcachebufs.first = data->pathcachebufs.first; - psys->pathcachebufs.last = data->pathcachebufs.last; - psys->totcached = data->totcached; - psys->childcache = data->childcache; - psys->childcachebufs.first = data->childcachebufs.first; - psys->childcachebufs.last = data->childcachebufs.last; - psys->totchildcache = data->totchildcache; - - psmd->dm_final = data->dm; - psmd->totdmvert = data->totdmvert; - psmd->totdmedge = data->totdmedge; - psmd->totdmface = data->totdmface; - psmd->flag &= ~eParticleSystemFlag_psys_updated; - - if (psmd->dm_final) { - if (!psmd->dm_final->deformedOnly) { - if (ob->derivedDeform) { - psmd->dm_deformed = CDDM_copy(ob->derivedDeform); - } - else { - psmd->dm_deformed = CDDM_from_mesh((Mesh *)ob->data); - } - DM_ensure_tessface(psmd->dm_deformed); - } - psys_calc_dmcache(ob, psmd->dm_final, psmd->dm_deformed, psys); - } - - MEM_freeN(data); - psys->renderdata = NULL; - - /* restore particle display percentage */ - disp = psys_get_current_display_percentage(psys); - - if (disp != render_disp) { - /* Hair can and has to be recalculated if everything isn't displayed. */ - if (psys->part->type == PART_HAIR) { - psys->recalc |= PSYS_RECALC_RESET; - } - else { - PARTICLE_P; - - LOOP_PARTICLES { - if (psys_frand(psys, p) > disp) - pa->flag |= PARS_NO_DISP; - else - pa->flag &= ~PARS_NO_DISP; - } - } - } -} - -bool psys_render_simplify_params(ParticleSystem *psys, ChildParticle *cpa, float *params) -{ - ParticleRenderData *data; - ParticleRenderElem *elem; - float x, w, scale, alpha, lambda, t, scalemin, scalemax; - int b; - - if (!(psys->renderdata && (psys->part->simplify_flag & PART_SIMPLIFY_ENABLE))) - return false; - - data = psys->renderdata; - if (!data->do_simplify) - return false; - b = (data->index_mf_to_mpoly) ? DM_origindex_mface_mpoly(data->index_mf_to_mpoly, data->index_mp_to_orig, cpa->num) : cpa->num; - if (b == ORIGINDEX_NONE) { - return false; - } - - elem = &data->elems[b]; - - lambda = elem->lambda; - t = elem->t; - scalemin = elem->scalemin; - scalemax = elem->scalemax; - - if (!elem->reduce) { - scale = scalemin; - alpha = 1.0f; - } - else { - x = (elem->curchild + 0.5f) / elem->totchild; - if (x < lambda - t) { - scale = scalemax; - alpha = 1.0f; - } - else if (x >= lambda + t) { - scale = scalemin; - alpha = 0.0f; - } - else { - w = (lambda + t - x) / (2.0f * t); - scale = scalemin + (scalemax - scalemin) * w; - alpha = w; - } - } - - params[0] = scale; - params[1] = alpha; - - elem->curchild++; - - return 1; -} - -/************************************************/ -/* Interpolation */ -/************************************************/ -static float interpolate_particle_value(float v1, float v2, float v3, float v4, const float w[4], int four) -{ - float value; - - value = w[0] * v1 + w[1] * v2 + w[2] * v3; - if (four) - value += w[3] * v4; - - CLAMP(value, 0.f, 1.f); - - return value; -} - -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); - } - } - } -} - - -typedef struct ParticleInterpolationData { - HairKey *hkey[2]; - - DerivedMesh *dm; - MVert *mvert[2]; - - int keyed; - ParticleKey *kkey[2]; - - PointCache *cache; - PTCacheMem *pm; - - PTCacheEditPoint *epoint; - PTCacheEditKey *ekey[2]; - - 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 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); - - 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); - 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) -{ - 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 */ - - 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; -} - -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->dm) { - pind->mvert[0] = CDDM_get_vert(pind->dm, 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); -} -static void hair_to_particle(ParticleKey *key, HairKey *hkey) -{ - 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; -} - -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->dm) { - 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->dm) { - 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->dm) { - 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); -} - -/************************************************/ -/* 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], - float orco[3], float ornor[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); - - if (ornor) - normal_quad_v3(ornor, o1, o2, o3, o4); - } - else { - interp_v3_v3v3v3(orco, o1, o2, o3, w); - - if (ornor) - normal_tri_v3(ornor, o1, o2, o3); - } - } - else { - copy_v3_v3(orco, vec); - if (ornor && nor) - copy_v3_v3(ornor, nor); - } - } -} -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; - } -} - -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]); - } -} - -static float psys_interpolate_value_from_verts(DerivedMesh *dm, 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 = dm->getTessFaceData(dm, index, CD_MFACE); - 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]; -} - -/* 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; - } -} - -/** - * Find the final derived mesh tessface for a particle, from its original tessface index. - * This is slow and can be optimized but only for many lookups. - * - * \param dm_final final DM, it may not have the same topology as original mesh. - * \param dm_deformed deformed-only DM, it has the exact same topology as original mesh. - * \param findex_orig the input tessface index. - * \param fw face weights (position of the particle inside the \a findex_orig tessface). - * \param poly_nodes may be NULL, otherwise an array of linked list, one for each final DM polygon, containing all - * its tessfaces indices. - * \return the DM tessface index. - */ -int psys_particle_dm_face_lookup( - DerivedMesh *dm_final, DerivedMesh *dm_deformed, - 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 = dm_final->getNumTessFaces(dm_final); - const int totface_deformed = dm_deformed ? dm_deformed->getNumTessFaces(dm_deformed) : totface_final; - - if (ELEM(0, totface_final, totface_deformed)) { - return DMCACHE_NOTFOUND; - } - - index_mf_to_mpoly = dm_final->getTessFaceDataArray(dm_final, CD_ORIGINDEX); - index_mp_to_orig = dm_final->getPolyDataArray(dm_final, CD_ORIGINDEX); - BLI_assert(index_mf_to_mpoly); - - if (dm_deformed) { - index_mf_to_mpoly_deformed = dm_deformed->getTessFaceDataArray(dm_deformed, CD_ORIGINDEX); - } - else { - BLI_assert(dm_final->deformedOnly); - 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 (dm_deformed == NULL) { - dm_deformed = dm_final; - } - - index_mf_to_mpoly_deformed = NULL; - - mtessface_final = dm_final->getTessFaceArray(dm_final); - osface_final = dm_final->getTessFaceDataArray(dm_final, 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 >= dm_deformed->getNumTessFaces(dm_deformed)) { - 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 = GET_INT_FROM_POINTER(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 (DM_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(DerivedMesh *dm, 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 (dm->deformedOnly || 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 >= dm->getNumVerts(dm)) - return 0; - - *mapindex = index; - } - else { /* FROM_FACE/FROM_VOLUME */ - if (index >= dm->getNumTessFaces(dm)) - 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 > dm->getNumVerts(dm)) - 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 >= dm->getNumTessFaces(dm)) - return 0; - - *mapindex = i; - - /* modify the original weights to become - * weights for the derived mesh face */ - osface = dm->getTessFaceDataArray(dm, CD_ORIGSPACE); - mface = dm->getTessFaceData(dm, i, CD_MFACE); - - 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(DerivedMesh *dm_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 ornor[3]) -{ - float tmpnor[3], mapfw[4]; - float (*orcodata)[3]; - int mapindex; - - if (!psys_map_index_on_dm(dm_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 (ornor) { ornor[0] = ornor[1] = 0.0; ornor[2] = 1.0; } - if (utan) { utan[0] = utan[1] = utan[2] = 0.0; } - if (vtan) { vtan[0] = vtan[1] = vtan[2] = 0.0; } - - return; - } - - orcodata = dm_final->getVertDataArray(dm_final, CD_ORCO); - - if (from == PART_FROM_VERT) { - dm_final->getVertCo(dm_final, mapindex, vec); - - if (nor) { - dm_final->getVertNo(dm_final, mapindex, nor); - normalize_v3(nor); - } - - if (orco) { - if (orcodata) { - copy_v3_v3(orco, orcodata[mapindex]); - } - else { - copy_v3_v3(orco, vec); - } - } - - if (ornor) { - dm_final->getVertNo(dm_final, mapindex, ornor); - normalize_v3(ornor); - } - - 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 = dm_final->getTessFaceData(dm_final, mapindex, CD_MFACE); - mvert = dm_final->getVertDataArray(dm_final, CD_MVERT); - mtface = CustomData_get_layer(&dm_final->faceData, CD_MTFACE); - - if (mtface) - mtface += mapindex; - - if (from == PART_FROM_VOLUME) { - psys_interpolate_face(mvert, mface, mtface, orcodata, mapfw, vec, tmpnor, utan, vtan, orco, ornor); - 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, ornor); - } -} - -float psys_particle_value_from_verts(DerivedMesh *dm, short from, ParticleData *pa, float *values) -{ - float mapfw[4]; - int mapindex; - - if (!psys_map_index_on_dm(dm, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, &mapindex, mapfw)) - return 0.0f; - - return psys_interpolate_value_from_verts(dm, 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; -} -/************************************************/ -/* 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], - float orco[3], float ornor[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); - } - if (ornor) { - copy_v3_v3(ornor, zerovec); - } -} -/************************************************/ -/* Particles on emitter */ -/************************************************/ - -CustomDataMask psys_emitter_customdata_mask(ParticleSystem *psys) -{ - CustomDataMask dataMask = 0; - MTex *mtex; - int i; - - if (!psys->part) - return 0; - - for (i = 0; i < MAX_MTEX; i++) { - mtex = psys->part->mtex[i]; - if (mtex && mtex->mapto && (mtex->texco & TEXCO_UV)) - dataMask |= CD_MASK_MTFACE; - } - - if (psys->part->tanfac != 0.0f) - dataMask |= CD_MASK_MTFACE; - - /* ask for vertexgroups if we need them */ - for (i = 0; i < PSYS_TOT_VG; i++) { - if (psys->vgroup[i]) { - dataMask |= 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. */ - dataMask |= CD_MASK_ORIGSPACE_MLOOP | CD_MASK_ORIGINDEX; - - dataMask |= CD_MASK_ORCO; - - return dataMask; -} - -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], float ornor[3]) -{ - if (psmd && psmd->dm_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->dm_final, from, index, index_dmcache, fuv, foffset, vec, nor, utan, vtan, orco, ornor); - } - else - psys_particle_on_shape(from, index, fuv, vec, nor, utan, vtan, orco, ornor); - -} -/************************************************/ -/* Path Cache */ -/************************************************/ - -extern void do_kink(ParticleKey *state, const float par_co[3], const float par_vel[3], const float par_rot[4], float time, float freq, float shape, float amplitude, float flat, - short type, short axis, float obmat[4][4], int smooth_start); -extern float do_clump(ParticleKey *state, const float par_co[3], float time, const float orco_offset[3], float clumpfac, float clumppow, float pa_clump, - bool use_clump_noise, float clump_noise_size, CurveMapping *clumpcurve); - -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, 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(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(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) -{ - 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; - - 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); - pdDoEffectors(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); - - add_v3_v3(force, vec); - - normalize_v3(force); - - if (k < steps) - sub_v3_v3v3(vec, (ca + 1)->co, ca->co); - - madd_v3_v3v3fl(ca->co, (ca - 1)->co, force, *length); - - if (k < steps) - *length = len_v3(vec); -} -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); - - child->co[0] *= flat; - - 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); - - add_v3_v3(child->co, par->co); -} -float *psys_cache_vgroup(DerivedMesh *dm, ParticleSystem *psys, int vgroup) -{ - float *vg = 0; - - if (vgroup < 0) { - /* hair dynamics pinning vgroup */ - - } - else if (psys->vgroup[vgroup]) { - MDeformVert *dvert = dm->getVertDataArray(dm, CD_MDEFORMVERT); - if (dvert) { - int totvert = dm->getNumVerts(dm), 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) -{ - ParticleSystem *psys = sim->psys; - ParticleSettings *part = sim->psys->part; - KDTree *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 ((sim->psys->renderdata || G.is_rendering) && 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_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, 0); - - /* Check if particle doesn't exist because of texture influence. Insert only existing particles into kdtree. */ - get_cpa_texture(sim->psmd->dm_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_insert(tree, p, orco); - } - } - - BLI_kdtree_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, 0); - cpa->parent = BLI_kdtree_find_nearest(tree, orco, NULL); - } - - BLI_kdtree_free(tree); -} - -static bool psys_thread_context_init_path(ParticleThreadContext *ctx, ParticleSimulationData *sim, Scene *scene, float cfra, int editupdate) -{ - 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(scene, psys)) { - ParticleEditSettings *pset = &scene->toolsettings->particle; - - if ((psys->renderdata == 0 && G.is_rendering == 0) && (psys->edit == 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 ((psys->renderdata || G.is_rendering) && 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 (psys->renderdata || G.is_rendering) - 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->dm, psys, PSYS_VG_LENGTH); - ctx->vg_clump = psys_cache_vgroup(ctx->dm, psys, PSYS_VG_CLUMP); - ctx->vg_kink = psys_cache_vgroup(ctx->dm, psys, PSYS_VG_KINK); - ctx->vg_rough1 = psys_cache_vgroup(ctx->dm, psys, PSYS_VG_ROUGH1); - ctx->vg_rough2 = psys_cache_vgroup(ctx->dm, psys, PSYS_VG_ROUGH2); - ctx->vg_roughe = psys_cache_vgroup(ctx->dm, psys, PSYS_VG_ROUGHE); - if (psys->part->flag & PART_CHILD_EFFECT) - ctx->vg_effector = psys_cache_vgroup(ctx->dm, 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; - } - - return true; -} - -static void psys_task_init_path(ParticleTask *task, ParticleSimulationData *sim) -{ - /* init random number generator */ - int seed = 31415926 + sim->psys->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) -{ - ParticleThreadContext *ctx = task->ctx; - Object *ob = ctx->sim.ob; - ParticleSystem *psys = ctx->sim.psys; - ParticleSettings *part = psys->part; - ParticleCacheKey **cache = psys->childcache; - ParticleCacheKey **pcache = psys_in_edit_mode(ctx->sim.scene, psys) && psys->edit ? psys->edit->pathcache : psys->pathcache; - ParticleCacheKey *child, *key[4]; - ParticleTexture ptex; - float *cpa_fuv = 0, *par_rot = 0, rot[4]; - float orco[3], ornor[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 (psys->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) { - for (w = 0; w < 4; w++) { - if (w && weight[w] > 0.f) { - 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] + key[0]->segments - 1)->co, (key[w] + key[w]->segments - 1)->co); - - d = d1 > 0.f ? d2 / d1 - 1.f : 10000.f; - } - else { - float v1[3], v2[3]; - sub_v3_v3v3(v1, (key[0] + key[0]->segments - 1)->co, key[0]->co); - sub_v3_v3v3(v2, (key[w] + key[w]->segments - 1)->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, ornor, 0, 0, orco, 0); - - 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->dm_final, psys->part->from, pa, hairmat); - } - else { - ParticleData *pa = psys->particles + cpa->parent; - float co[3]; - if (ctx->editupdate) { - if (!(psys->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; - cpa_num = pa->num; - /* XXX hack to avoid messed up particle num and subsequent crash (#40733) */ - if (cpa_num > ctx->sim.psmd->dm_final->getNumTessFaces(ctx->sim.psmd->dm_final)) - 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, ornor, 0, 0, orco, 0); - - psys_mat_hair_to_global(ob, ctx->sim.psmd->dm_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, NULL); - - psys_apply_child_modifiers(ctx, &modifiers, cpa, &ptex, orco, ornor, 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)) -{ - 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, int editupdate) -{ - 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)) - 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) -{ - 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); - } -} - -/** - * Calculates paths ready for drawing/rendering - * - Useful for making use of opengl vertex arrays for super fast strand drawing. - * - Makes child strands possible and creates them too into the cache. - * - Cached path data is also used to determine cut position for the editmode tool. */ -void psys_cache_paths(ParticleSimulationData *sim, float cfra) -{ - PARTICLE_PSMD; - ParticleEditSettings *pset = &sim->scene->toolsettings->particle; - ParticleSystem *psys = sim->psys; - ParticleSettings *part = psys->part; - ParticleCacheKey *ca, **cache; - - DerivedMesh *hair_dm = (psys->part->type == PART_HAIR && psys->flag & PSYS_HAIR_DYNAMICS) ? psys->hair_out_dm : 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)((psys->renderdata || G.is_rendering) ? 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->scene, psys)) - if (psys->renderdata == 0 && (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->dm_final, psys, PSYS_VG_EFFECTOR); - - if (!psys->totchild) - vg_length = psys_cache_vgroup(psmd->dm_final, psys, PSYS_VG_LENGTH); - } - - /* ensure we have tessfaces to be used for mapping */ - if (part->from != PART_FROM_VERT) { - DM_ensure_tessface(psmd->dm_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->dm_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.dm = hair_dm; - - 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->dm_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_dm) - 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->dm_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->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, 1.0f); - } - } - - /* 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); -} -void psys_cache_edit_paths(Scene *scene, Object *ob, PTCacheEdit *edit, float cfra) -{ - ParticleCacheKey *ca, **cache = edit->pathcache; - ParticleEditSettings *pset = &scene->toolsettings->particle; - - PTCacheEditPoint *point = NULL; - PTCacheEditKey *ekey = NULL; - - ParticleSystem *psys = edit->psys; - ParticleSystemModifierData *psmd = psys_get_modifier(ob, psys); - ParticleData *pa = psys ? psys->particles : NULL; - - ParticleInterpolationData pind; - ParticleKey result; - - float birthtime = 0.0f, dietime = 0.0f; - float t, time = 0.0f, keytime = 0.0f /*, frs_sec */; - float hairmat[4][4], rotmat[3][3], prev_tangent[3] = {0.0f, 0.0f, 0.0f}; - int k, i; - int segments = 1 << pset->draw_step; - int totpart = edit->totpoint, recalc_set = 0; - float sel_col[3]; - float nosel_col[3]; - - 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) */ - for (i = 0, point = edit->points; i < totpart; i++, point++) - point->flag |= PEP_EDIT_RECALC; - recalc_set = 1; - } - - /* frs_sec = (psys || edit->pid.flag & PTCACHE_VEL_PER_SEC) ? 25.0f : 1.0f; */ /* UNUSED */ - - if (pset->brushtype == PE_BRUSH_WEIGHT) { - ; /* use weight painting colors now... */ - } - else { - sel_col[0] = (float)edit->sel_col[0] / 255.0f; - sel_col[1] = (float)edit->sel_col[1] / 255.0f; - sel_col[2] = (float)edit->sel_col[2] / 255.0f; - nosel_col[0] = (float)edit->nosel_col[0] / 255.0f; - nosel_col[1] = (float)edit->nosel_col[1] / 255.0f; - nosel_col[2] = (float)edit->nosel_col[2] / 255.0f; - } - - /*---first main loop: create all actual particles' paths---*/ - for (i = 0, point = edit->points; i < totpart; i++, pa += pa ? 1 : 0, point++) { - if (edit->totcached && !(point->flag & PEP_EDIT_RECALC)) - continue; - - if (point->totkey == 0) - continue; - - ekey = point->keys; - - pind.keyed = 0; - pind.cache = NULL; - pind.epoint = point; - pind.bspline = psys ? (psys->part->flag & PART_HAIR_BSPLINE) : 0; - pind.dm = NULL; - - - /* should init_particle_interpolation set this ? */ - if (pset->brushtype == PE_BRUSH_WEIGHT) { - pind.hkey[0] = NULL; - /* pa != NULL since the weight brush is only available for hair */ - pind.hkey[1] = pa->hair; - } - - - memset(cache[i], 0, sizeof(*cache[i]) * (segments + 1)); - - cache[i]->segments = segments; - - /*--get the first data points--*/ - init_particle_interpolation(ob, psys, pa, &pind); - - if (psys) { - psys_mat_hair_to_global(ob, psmd->dm_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[i]->segments = -1; - continue; - } - - /*--interpolate actual path from data points--*/ - for (k = 0, ca = cache[i]; k <= segments; k++, ca++) { - time = (float)k / (float)segments; - t = birthtime + time * (dietime - birthtime); - result.time = -t; - do_particle_interpolation(psys, i, 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 (pset->brushtype == PE_BRUSH_WEIGHT) { - float t2; - - if (k == 0) { - weight_to_rgb(ca->col, pind.hkey[1]->weight); - } - else { - float w1[3], w2[3]; - keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); - - weight_to_rgb(w1, pind.hkey[0]->weight); - weight_to_rgb(w2, pind.hkey[1]->weight); - - interp_v3_v3v3(ca->col, w1, w2, keytime); - } - - /* at the moment this is only used for weight painting. - * will need to move out of this check if its used elsewhere. */ - t2 = birthtime + ((float)k / (float)segments) * (dietime - birthtime); - - while (pind.hkey[1]->time < t2) pind.hkey[1]++; - pind.hkey[0] = pind.hkey[1] - 1; - } - 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, sel_col); - } - else { - keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time)); - interp_v3_v3v3(ca->col, sel_col, 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, nosel_col, sel_col, keytime); - } - else { - copy_v3_v3(ca->col, 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[i]->rot, rotmat); - } - } - - edit->totcached = totpart; - - if (psys) { - ParticleSimulationData sim = {0}; - sim.scene = scene; - sim.ob = ob; - sim.psys = psys; - sim.psmd = psys_get_modifier(ob, psys); - - psys_cache_child_paths(&sim, cfra, 1); - } - - /* clear recalc flag if set here */ - if (recalc_set) { - for (i = 0, point = edit->points; i < totpart; i++, point++) - point->flag &= ~PEP_EDIT_RECALC; - } -} -/************************************************/ -/* 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; - } -} -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; -} -/*-------changing particle keys from space to another-------*/ -#if 0 -static void key_from_object(Object *ob, ParticleKey *key) -{ - float q[4]; - - add_v3_v3(key->vel, key->co); - - mul_m4_v3(ob->obmat, key->co); - mul_m4_v3(ob->obmat, key->vel); - mat4_to_quat(q, ob->obmat); - - sub_v3_v3v3(key->vel, key->vel, key->co); - mul_qt_qtqt(key->rot, q, key->rot); -} -#endif - -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]); -} - -static void psys_face_mat(Object *ob, DerivedMesh *dm, 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 >= dm->getNumTessFaces(dm)) { unit_m4(mat); return; } - - mface = dm->getTessFaceData(dm, i, CD_MFACE); - osface = dm->getTessFaceData(dm, i, CD_ORIGSPACE); - - if (orco && (orcodata = dm->getVertDataArray(dm, 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 (DM_get_vert_data_layer(dm, CD_ORIGINDEX)) - BKE_mesh_orco_verts_transform(ob->data, v, 3, 1); - } - else { - dm->getVertCo(dm, mface->v1, v[0]); - dm->getVertCo(dm, mface->v2, v[1]); - dm->getVertCo(dm, mface->v3, v[2]); - } - - triatomat(v[0], v[1], v[2], (osface) ? osface->uv : NULL, mat); -} - -void psys_mat_hair_to_object(Object *UNUSED(ob), DerivedMesh *dm, short from, ParticleData *pa, float hairmat[4][4]) -{ - float vec[3]; - - /* can happen when called from a different object's modifier */ - if (!dm) { - unit_m4(hairmat); - return; - } - - psys_face_mat(0, dm, pa, hairmat, 0); - psys_particle_on_dm(dm, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, 0, 0); - copy_v3_v3(hairmat[3], vec); -} - -void psys_mat_hair_to_orco(Object *ob, DerivedMesh *dm, short from, ParticleData *pa, float hairmat[4][4]) -{ - float vec[3], orco[3]; - - psys_face_mat(ob, dm, pa, hairmat, 1); - psys_particle_on_dm(dm, from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, vec, 0, 0, 0, orco, 0); - - /* see psys_face_mat for why this function is called */ - if (DM_get_vert_data_layer(dm, CD_ORIGINDEX)) - BKE_mesh_orco_verts_transform(ob->data, &orco, 1, 1); - copy_v3_v3(hairmat[3], orco); -} - -void psys_vec_rot_to_face(DerivedMesh *dm, ParticleData *pa, float vec[3]) -{ - float mat[4][4]; - - psys_face_mat(0, dm, 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, DerivedMesh *dm, short from, ParticleData *pa, float hairmat[4][4]) -{ - float facemat[4][4]; - - psys_mat_hair_to_object(ob, dm, from, pa, facemat); - - mul_m4_m4m4(hairmat, ob->obmat, facemat); -} - -/************************************************/ -/* ParticleSettings handling */ -/************************************************/ -ModifierData *object_add_particle_system(Scene *scene, Object *ob, const char *name) -{ - ParticleSystem *psys; - ModifierData *md; - ParticleSystemModifierData *psmd; - - if (!ob || ob->type != OB_MESH) - return NULL; - - 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->part = psys_new_settings(DATA_("ParticleSettings"), NULL); - - if (BLI_listbase_count_ex(&ob->particlesystem, 2) > 1) - BLI_snprintf(psys->name, sizeof(psys->name), DATA_("ParticleSystem %i"), BLI_listbase_count(&ob->particlesystem)); - else - BLI_strncpy(psys->name, DATA_("ParticleSystem"), sizeof(psys->name)); - - md = modifier_new(eModifierType_ParticleSystem); - - if (name) - BLI_strncpy_utf8(md->name, name, sizeof(md->name)); - else - BLI_snprintf(md->name, sizeof(md->name), DATA_("ParticleSystem %i"), BLI_listbase_count(&ob->particlesystem)); - modifier_unique_name(&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); - - DAG_relations_tag_update(G.main); - DAG_id_tag_update(&ob->id, OB_RECALC_DATA); - - return md; -} -void object_remove_particle_system(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); - psys_free(ob, psys); - - if (ob->particlesystem.first) - ((ParticleSystem *) ob->particlesystem.first)->flag |= PSYS_CURRENT; - else - ob->mode &= ~OB_MODE_PARTICLE_EDIT; - - DAG_relations_tag_update(G.main); - DAG_id_tag_update(&ob->id, OB_RECALC_DATA); -} - -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->bb_align = PART_BB_VIEW; - part->bb_split_offset = PART_BB_OFF_LINEAR; - 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 = PART_DRAW_EMITTER; - 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; - - part->simplify_refsize = 1920; - part->simplify_rate = 1.0f; - part->simplify_transition = 0.1f; - part->simplify_viewport = 0.8; - - if (!part->effector_weights) - part->effector_weights = BKE_add_effector_weights(NULL); - - part->omat = 1; - part->use_modifier_stack = false; -} - - -ParticleSettings *psys_new_settings(const char *name, Main *main) -{ - ParticleSettings *part; - - if (main == NULL) - main = G.main; - - part = BKE_libblock_alloc(main, ID_PA, name); - - default_particle_settings(part); - - return part; -} - -void BKE_particlesettings_clump_curve_init(ParticleSettings *part) -{ - 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; - - part->clumpcurve = cumap; -} - -void BKE_particlesettings_rough_curve_init(ParticleSettings *part) -{ - 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; - - part->roughcurve = cumap; -} - -ParticleSettings *BKE_particlesettings_copy(ParticleSettings *part) -{ - ParticleSettings *partn; - int a; - - partn = BKE_libblock_copy(&part->id); - partn->pd = MEM_dupallocN(part->pd); - partn->pd2 = MEM_dupallocN(part->pd2); - partn->effector_weights = MEM_dupallocN(part->effector_weights); - partn->fluid = MEM_dupallocN(part->fluid); - - if (part->clumpcurve) - partn->clumpcurve = curvemapping_copy(part->clumpcurve); - if (part->roughcurve) - partn->roughcurve = curvemapping_copy(part->roughcurve); - - partn->boids = boid_copy_settings(part->boids); - - for (a = 0; a < MAX_MTEX; a++) { - if (part->mtex[a]) { - partn->mtex[a] = MEM_mallocN(sizeof(MTex), "psys_copy_tex"); - memcpy(partn->mtex[a], part->mtex[a], sizeof(MTex)); - id_us_plus((ID *)partn->mtex[a]->tex); - } - } - - BLI_duplicatelist(&partn->dupliweights, &part->dupliweights); - - if (part->id.lib) { - BKE_id_lib_local_paths(G.main, part->id.lib, &partn->id); - } - - return partn; -} - -static void expand_local_particlesettings(ParticleSettings *part) -{ - int i; - id_lib_extern((ID *)part->dup_group); - - for (i = 0; i < MAX_MTEX; i++) { - if (part->mtex[i]) id_lib_extern((ID *)part->mtex[i]->tex); - } -} - -void BKE_particlesettings_make_local(ParticleSettings *part) -{ - Main *bmain = G.main; - Object *ob; - bool is_local = false, is_lib = false; - - /* - only lib users: do nothing - * - only local users: set flag - * - mixed: make copy - */ - - if (part->id.lib == 0) return; - if (part->id.us == 1) { - id_clear_lib_data(bmain, &part->id); - expand_local_particlesettings(part); - return; - } - - /* test objects */ - for (ob = bmain->object.first; ob && ELEM(false, is_lib, is_local); ob = ob->id.next) { - ParticleSystem *psys = ob->particlesystem.first; - for (; psys; psys = psys->next) { - if (psys->part == part) { - if (ob->id.lib) is_lib = true; - else is_local = true; - } - } - } - - if (is_local && is_lib == false) { - id_clear_lib_data(bmain, &part->id); - expand_local_particlesettings(part); - } - else if (is_local && is_lib) { - ParticleSettings *part_new = BKE_particlesettings_copy(part); - part_new->id.us = 0; - - /* Remap paths of new ID using old library as base. */ - BKE_id_lib_local_paths(bmain, part->id.lib, &part_new->id); - - /* do objects */ - for (ob = bmain->object.first; ob; ob = ob->id.next) { - ParticleSystem *psys; - for (psys = ob->particlesystem.first; psys; psys = psys->next) { - if (psys->part == part && ob->id.lib == 0) { - psys->part = part_new; - id_us_plus(&part_new->id); - id_us_min(&part->id); - } - } - } - } -} - -/************************************************/ -/* Textures */ -/************************************************/ - -static int get_particle_uv(DerivedMesh *dm, ParticleData *pa, int face_index, const float fuv[4], char *name, float *texco) -{ - MFace *mf; - MTFace *tf; - int i; - - tf = CustomData_get_layer_named(&dm->faceData, CD_MTFACE, name); - - if (tf == NULL) - tf = CustomData_get_layer(&dm->faceData, CD_MTFACE); - - if (tf == NULL) - return 0; - - if (pa) { - i = ELEM(pa->num_dmcache, DMCACHE_NOTFOUND, DMCACHE_ISCHILD) ? pa->num : pa->num_dmcache; - if (i >= dm->getNumTessFaces(dm)) - i = -1; - } - else - i = face_index; - - if (i == -1) { - texco[0] = 0.0f; - texco[1] = 0.0f; - texco[2] = 0.0f; - } - else { - mf = dm->getTessFaceData(dm, i, CD_MFACE); - - 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(DerivedMesh *dm, 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->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(dm, NULL, face_index, fw, mtex->uvname, texvec)) - break; - /* no break, failed to get uv's, so let's try orco's */ - 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); - } - } - - 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) -{ - 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->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->dm_final, pa, 0, pa->fuv, mtex->uvname, texvec)) - break; - /* no break, failed to get uv's, so let's try orco's */ - 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, 0); - - 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); - } - } - - 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 */ -/************************************************/ -float psys_get_timestep(ParticleSimulationData *sim) -{ - return 0.04f * sim->psys->part->timetweak; -} -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; -} -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) - size = part->size; - 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) -{ - ParticleSystem *psys = ctx->sim.psys; - int i = cpa - psys->child; - - get_cpa_texture(ctx->dm, 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->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_length); - if (ctx->vg_clump) - ptex->clump *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_clump); - if (ctx->vg_kink) - ptex->kink_freq *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_kink); - if (ctx->vg_rough1) - ptex->rough1 *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough1); - if (ctx->vg_rough2) - ptex->rough2 *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_rough2); - if (ctx->vg_roughe) - ptex->roughe *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_roughe); - if (ctx->vg_effector) - ptex->effector *= psys_interpolate_value_from_verts(ctx->dm, cpa_from, cpa_num, cpa_fuv, ctx->vg_effector); -} -/* 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) -{ - 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.dm = psys_in_edit_mode(sim->scene, psys) ? NULL : psys->hair_out_dm; - init_particle_interpolation(sim->ob, psys, pa, &pind); - do_particle_interpolation(psys, p, pa, t, &pind, state); - - if (pind.dm) { - 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->dm_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->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, 1.0f); - } - } - } - } - 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, 0); - - /* 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, 0); - if (part->type == PART_HAIR) - psys_mat_hair_to_global(sim->ob, sim->psmd->dm_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, 0); - 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, 0); - psys_mat_hair_to_global(sim->ob, sim->psmd->dm_final, psys->part->from, pa, hairmat); - } - else { - copy_v3_v3(orco, cpa->fuv); - unit_m4(hairmat); - } - } - - /* correct child ipo timing */ -#if 0 // XXX old animation system - if ((part->flag & PART_ABS_TIME) == 0 && part->ipo) { - calc_ipo(part->ipo, 100.0f * t); - execute_ipo((ID *)part, part->ipo); - } -#endif // XXX old animation system - - /* get different child parameters from textures & vgroups */ - memset(&ctx, 0, sizeof(ParticleThreadContext)); - ctx.sim = *sim; - ctx.dm = psmd->dm_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 */ - do_child_modifiers(NULL, sim, &ptex, par->co, par->vel, par->rot, par_orco, cpa, orco, 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 : BKE_scene_frame_get(sim->scene); - - 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); - do_child_modifiers(NULL, sim, NULL, key1->co, key1->vel, key1->rot, par_orco, cpa, cpa->fuv, mat, state, t); - - if (psys->lattice_deform_data) - calc_latt_deform(psys->lattice_deform_data, state->co, 1.0f); - } - 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, 1.0f); - } - - return 1; - } -} - -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; - - if (cpa) { - if ((part->childtype == PART_CHILD_FACES) && (psmd->dm_final != NULL)) { - CustomData *mtf_data = psmd->dm_final->getTessFaceDataLayout(psmd->dm_final); - 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) { - mface = psmd->dm_final->getTessFaceData(psmd->dm_final, 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, 0); - return; - } - else { - pa = psys->particles + cpa->pa[0]; - } - } - - if ((part->from == PART_FROM_FACE) && (psmd->dm_final != NULL)) { - CustomData *mtf_data = psmd->dm_final->getTessFaceDataLayout(psmd->dm_final); - 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->dm_final->getNumTessFaces(psmd->dm_final)) { - /* happens when simplify is enabled - * gives invalid coords but would crash otherwise */ - num = DMCACHE_NOTFOUND; - } - - if (mtface && !ELEM(num, DMCACHE_NOTFOUND, DMCACHE_ISCHILD)) { - mface = psmd->dm_final->getTessFaceData(psmd->dm_final, 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, 0); -} - -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, 0); - else - psys_particle_on_emitter(psmd, PART_FROM_FACE, cpa->num, DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, loc, nor, 0, 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_make_billboard(ParticleBillboardData *bb, float xvec[3], float yvec[3], float zvec[3], float center[3]) -{ - float onevec[3] = {0.0f, 0.0f, 0.0f}, tvec[3], tvec2[3]; - - xvec[0] = 1.0f; xvec[1] = 0.0f; xvec[2] = 0.0f; - yvec[0] = 0.0f; yvec[1] = 1.0f; yvec[2] = 0.0f; - - /* can happen with bad pointcache or physics calculation - * since this becomes geometry, nan's and inf's crash raytrace code. - * better not allow this. */ - if ((!finite(bb->vec[0])) || (!finite(bb->vec[1])) || (!finite(bb->vec[2])) || - (!finite(bb->vel[0])) || (!finite(bb->vel[1])) || (!finite(bb->vel[2])) ) - { - zero_v3(bb->vec); - zero_v3(bb->vel); - - zero_v3(xvec); - zero_v3(yvec); - zero_v3(zvec); - zero_v3(center); - - return; - } - - if (bb->align < PART_BB_VIEW) - onevec[bb->align] = 1.0f; - - if (bb->lock && (bb->align == PART_BB_VIEW)) { - normalize_v3_v3(xvec, bb->ob->obmat[0]); - normalize_v3_v3(yvec, bb->ob->obmat[1]); - normalize_v3_v3(zvec, bb->ob->obmat[2]); - } - else if (bb->align == PART_BB_VEL) { - float temp[3]; - - normalize_v3_v3(temp, bb->vel); - - sub_v3_v3v3(zvec, bb->ob->obmat[3], bb->vec); - - if (bb->lock) { - float fac = -dot_v3v3(zvec, temp); - - madd_v3_v3fl(zvec, temp, fac); - } - normalize_v3(zvec); - - cross_v3_v3v3(xvec, temp, zvec); - normalize_v3(xvec); - - cross_v3_v3v3(yvec, zvec, xvec); - } - else { - sub_v3_v3v3(zvec, bb->ob->obmat[3], bb->vec); - if (bb->lock) - zvec[bb->align] = 0.0f; - normalize_v3(zvec); - - if (bb->align < PART_BB_VIEW) - cross_v3_v3v3(xvec, onevec, zvec); - else - cross_v3_v3v3(xvec, bb->ob->obmat[1], zvec); - normalize_v3(xvec); - - cross_v3_v3v3(yvec, zvec, xvec); - } - - copy_v3_v3(tvec, xvec); - copy_v3_v3(tvec2, yvec); - - mul_v3_fl(xvec, cosf(bb->tilt * (float)M_PI)); - mul_v3_fl(tvec2, sinf(bb->tilt * (float)M_PI)); - add_v3_v3(xvec, tvec2); - - mul_v3_fl(yvec, cosf(bb->tilt * (float)M_PI)); - mul_v3_fl(tvec, -sinf(bb->tilt * (float)M_PI)); - add_v3_v3(yvec, tvec); - - mul_v3_fl(xvec, bb->size[0]); - mul_v3_fl(yvec, bb->size[1]); - - madd_v3_v3v3fl(center, bb->vec, xvec, bb->offset[0]); - madd_v3_v3fl(center, yvec, bb->offset[1]); -} - -void psys_apply_hair_lattice(Scene *scene, Object *ob, ParticleSystem *psys) -{ - ParticleSimulationData sim = {0}; - 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->dm_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, 1.0f); - 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; - } -} |