diff options
Diffstat (limited to 'source')
-rw-r--r-- | source/blender/blenkernel/intern/particle.c | 14 | ||||
-rw-r--r-- | source/blender/blenkernel/intern/particle_system.c | 872 | ||||
-rw-r--r-- | source/blender/blenloader/intern/readfile.c | 9 | ||||
-rw-r--r-- | source/blender/editors/space_view3d/drawobject.c | 81 | ||||
-rw-r--r-- | source/blender/makesdna/DNA_particle_types.h | 36 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_particle.c | 90 |
6 files changed, 573 insertions, 529 deletions
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c index e2a23f5bc6c..fcea0ffb6cf 100644 --- a/source/blender/blenkernel/intern/particle.c +++ b/source/blender/blenkernel/intern/particle.c @@ -571,6 +571,7 @@ void psys_free(Object *ob, ParticleSystem * psys) BLI_freelistN(&psys->targets); + BLI_bvhtree_free(psys->bvhtree); BLI_kdtree_free(psys->tree); if(psys->fluid_springs) @@ -2703,7 +2704,7 @@ static void psys_thread_create_path(ParticleThread *thread, struct ChildParticle sub_v3_v3v3((child-1)->vel, child->co, (child-2)->co); mul_v3_fl((child-1)->vel, 0.5); - if(ctx->ma && (part->draw & PART_DRAW_MAT_COL)) + if(ctx->ma && (part->draw_col == PART_DRAW_COL_MAT)) get_strand_normal(ctx->ma, ornor, cur_length, (child-1)->vel); } @@ -2722,7 +2723,7 @@ static void psys_thread_create_path(ParticleThread *thread, struct ChildParticle cur_length = 0.0f; } - if(ctx->ma && (part->draw & PART_DRAW_MAT_COL)) { + if(ctx->ma && (part->draw_col == PART_DRAW_COL_MAT)) { VECCOPY(child->col, &ctx->ma->r) get_strand_normal(ctx->ma, ornor, cur_length, child->vel); } @@ -2907,7 +2908,7 @@ void psys_cache_paths(ParticleSimulationData *sim, float cfra) psys->lattice = psys_get_lattice(sim); ma= give_current_material(sim->ob, psys->part->omat); - if(ma && (psys->part->draw & PART_DRAW_MAT_COL)) + if(ma && (psys->part->draw_col == PART_DRAW_COL_MAT)) VECCOPY(col, &ma->r) if((psys->flag & PSYS_GLOBAL_HAIR)==0) { @@ -3535,16 +3536,15 @@ static void default_particle_settings(ParticleSettings *part) part->clength=1.0f; part->clength_thres=0.0f; - part->draw= PART_DRAW_EMITTER|PART_DRAW_MAT_COL; + part->draw= PART_DRAW_EMITTER; part->draw_line[0]=0.5; part->path_start = 0.0f; part->path_end = 1.0f; part->keyed_loops = 1; -#if 0 // XXX old animation system - part->ipo = NULL; -#endif // XXX old animation system + part->color_vec_max = 1.f; + part->draw_col = PART_DRAW_COL_MAT; part->simplify_refsize= 1920; part->simplify_rate= 1.0f; diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c index b8535d36368..55d34f19cdc 100644 --- a/source/blender/blenkernel/intern/particle_system.c +++ b/source/blender/blenkernel/intern/particle_system.c @@ -1957,112 +1957,7 @@ static void set_keyed_keys(ParticleSimulationData *sim) psys->flag |= PSYS_KEYED; } -/************************************************/ -/* Reactors */ -/************************************************/ -//static void push_reaction(ParticleSimulationData *sim, int pa_num, int event, ParticleKey *state) -//{ -// Object *rob; -// ParticleSystem *rpsys; -// ParticleSettings *rpart; -// ParticleData *pa; -// ListBase *lb=&sim->psys->effectors; -// ParticleEffectorCache *ec; -// ParticleReactEvent *re; -// -// if(lb->first) for(ec = lb->first; ec; ec= ec->next){ -// if(ec->type & PSYS_EC_REACTOR){ -// /* all validity checks already done in add_to_effectors */ -// rob=ec->ob; -// rpsys=BLI_findlink(&rob->particlesystem,ec->psys_nbr); -// rpart=rpsys->part; -// if(rpsys->part->reactevent==event){ -// pa=sim->psys->particles+pa_num; -// re= MEM_callocN(sizeof(ParticleReactEvent), "react event"); -// re->event=event; -// re->pa_num = pa_num; -// re->ob = sim->ob; -// re->psys = sim->psys; -// re->size = pa->size; -// copy_particle_key(&re->state,state,1); -// -// switch(event){ -// case PART_EVENT_DEATH: -// re->time=pa->dietime; -// break; -// case PART_EVENT_COLLIDE: -// re->time=state->time; -// break; -// case PART_EVENT_NEAR: -// re->time=state->time; -// break; -// } -// -// BLI_addtail(&rpsys->reactevents, re); -// } -// } -// } -//} -//static void react_to_events(ParticleSystem *psys, int pa_num) -//{ -// ParticleSettings *part=psys->part; -// ParticleData *pa=psys->particles+pa_num; -// ParticleReactEvent *re=psys->reactevents.first; -// int birth=0; -// float dist=0.0f; -// -// for(re=psys->reactevents.first; re; re=re->next){ -// birth=0; -// if(part->from==PART_FROM_PARTICLE){ -// if(pa->num==re->pa_num && pa->alive==PARS_UNBORN){ -// if(re->event==PART_EVENT_NEAR){ -// ParticleData *tpa = re->psys->particles+re->pa_num; -// float pa_time=tpa->time + pa->foffset*tpa->lifetime; -// if(re->time >= pa_time){ -// pa->time=pa_time; -// pa->dietime=pa->time+pa->lifetime; -// } -// } -// else{ -// pa->time=re->time; -// pa->dietime=pa->time+pa->lifetime; -// } -// } -// } -// else{ -// dist=len_v3v3(pa->state.co, re->state.co); -// if(dist <= re->size){ -// if(pa->alive==PARS_UNBORN){ -// pa->time=re->time; -// pa->dietime=pa->time+pa->lifetime; -// birth=1; -// } -// if(birth || part->flag&PART_REACT_MULTIPLE){ -// float vec[3]; -// VECSUB(vec,pa->state.co, re->state.co); -// if(birth==0) -// mul_v3_fl(vec,(float)pow(1.0f-dist/re->size,part->reactshape)); -// VECADDFAC(pa->state.vel,pa->state.vel,vec,part->reactfac); -// VECADDFAC(pa->state.vel,pa->state.vel,re->state.vel,part->partfac); -// } -// if(birth) -// mul_v3_fl(pa->state.vel,(float)pow(1.0f-dist/re->size,part->reactshape)); -// } -// } -// } -//} -//void psys_get_reactor_target(ParticleSimulationData *sim, Object **target_ob, ParticleSystem **target_psys) -//{ -// Object *tob; -// -// tob = sim->psys->target_ob ? sim->psys->target_ob : sim->ob; -// -// *target_psys = BLI_findlink(&tob->particlesystem, sim->psys->target_psys-1); -// if(*target_psys) -// *target_ob=tob; -// else -// *target_ob=0; -//} + /************************************************/ /* Point Cache */ /************************************************/ @@ -2094,17 +1989,48 @@ void psys_get_pointcache_start_end(Scene *scene, ParticleSystem *psys, int *sfra /************************************************/ /* Effectors */ /************************************************/ +static void psys_update_particle_bvhtree(ParticleSystem *psys, float cfra) +{ + if(psys) { + PARTICLE_P; + int totpart = 0; + + if(!psys->bvhtree || psys->bvhtree_frame != cfra) { + LOOP_SHOWN_PARTICLES { + totpart++; + } + + BLI_bvhtree_free(psys->bvhtree); + psys->bvhtree = BLI_bvhtree_new(totpart, 0.0, 4, 6); + + LOOP_SHOWN_PARTICLES { + if(pa->alive == PARS_ALIVE) { + if(pa->state.time == cfra) + BLI_bvhtree_insert(psys->bvhtree, p, pa->prev_state.co, 1); + else + BLI_bvhtree_insert(psys->bvhtree, p, pa->state.co, 1); + } + } + BLI_bvhtree_balance(psys->bvhtree); + + psys->bvhtree_frame = cfra; + } + } +} void psys_update_particle_tree(ParticleSystem *psys, float cfra) { if(psys) { PARTICLE_P; + int totpart = 0; if(!psys->tree || psys->tree_frame != cfra) { - - BLI_kdtree_free(psys->tree); + LOOP_SHOWN_PARTICLES { + totpart++; + } + BLI_kdtree_free(psys->tree); psys->tree = BLI_kdtree_new(psys->totpart); - + LOOP_SHOWN_PARTICLES { if(pa->alive == PARS_ALIVE) { if(pa->state.time == cfra) @@ -2115,7 +2041,7 @@ void psys_update_particle_tree(ParticleSystem *psys, float cfra) } BLI_kdtree_balance(psys->tree); - psys->tree_frame = psys->cfra; + psys->tree_frame = cfra; } } } @@ -2127,6 +2053,128 @@ static void psys_update_effectors(ParticleSimulationData *sim) precalc_guides(sim, sim->psys->effectors); } +static void integrate_particle(ParticleSettings *part, ParticleData *pa, float dtime, float *external_acceleration, void (*force_func)(void *forcedata, ParticleKey *state, float *force, float *impulse), void *forcedata) +{ + ParticleKey states[5]; + float force[3],acceleration[3],impulse[3],dx[4][3],dv[4][3],oldpos[3]; + float pa_mass= (part->flag & PART_SIZEMASS ? part->mass * pa->size : part->mass); + int i, steps=1; + + copy_v3_v3(oldpos, pa->state.co); + + switch(part->integrator){ + case PART_INT_EULER: + steps=1; + break; + case PART_INT_MIDPOINT: + steps=2; + break; + case PART_INT_RK4: + steps=4; + break; + case PART_INT_VERLET: + steps=1; + break; + } + + copy_particle_key(states, &pa->state, 1); + + states->time = 0.f; + + for(i=0; i<steps; i++){ + zero_v3(force); + zero_v3(impulse); + + force_func(forcedata, states+i, force, impulse); + + /* force to acceleration*/ + mul_v3_v3fl(acceleration, force, 1.0f/pa_mass); + + if(external_acceleration) + add_v3_v3(acceleration, external_acceleration); + + /* calculate next state */ + add_v3_v3(states[i].vel, impulse); + + switch(part->integrator){ + case PART_INT_EULER: + madd_v3_v3v3fl(pa->state.co, states->co, states->vel, dtime); + madd_v3_v3v3fl(pa->state.vel, states->vel, acceleration, dtime); + break; + case PART_INT_MIDPOINT: + if(i==0){ + madd_v3_v3v3fl(states[1].co, states->co, states->vel, dtime*0.5f); + madd_v3_v3v3fl(states[1].vel, states->vel, acceleration, dtime*0.5f); + states[1].time = dtime*0.5f; + /*fra=sim->psys->cfra+0.5f*dfra;*/ + } + else{ + madd_v3_v3v3fl(pa->state.co, states->co, states[1].vel, dtime); + madd_v3_v3v3fl(pa->state.vel, states->vel, acceleration, dtime); + } + break; + case PART_INT_RK4: + switch(i){ + case 0: + copy_v3_v3(dx[0], states->vel); + mul_v3_fl(dx[0], dtime); + copy_v3_v3(dv[0], acceleration); + mul_v3_fl(dv[0], dtime); + + madd_v3_v3v3fl(states[1].co, states->co, dx[0], 0.5f); + madd_v3_v3v3fl(states[1].vel, states->vel, dv[0], 0.5f); + states[1].time = dtime*0.5f; + /*fra=sim->psys->cfra+0.5f*dfra;*/ + break; + case 1: + madd_v3_v3v3fl(dx[1], states->vel, dv[0], 0.5f); + mul_v3_fl(dx[1], dtime); + copy_v3_v3(dv[1], acceleration); + mul_v3_fl(dv[1], dtime); + + madd_v3_v3v3fl(states[2].co, states->co, dx[1], 0.5f); + madd_v3_v3v3fl(states[2].vel, states->vel, dv[1], 0.5f); + states[2].time = dtime*0.5f; + break; + case 2: + madd_v3_v3v3fl(dx[2], states->vel, dv[1], 0.5f); + mul_v3_fl(dx[2], dtime); + copy_v3_v3(dv[2], acceleration); + mul_v3_fl(dv[2], dtime); + + add_v3_v3v3(states[3].co, states->co, dx[2]); + add_v3_v3v3(states[3].vel, states->vel, dv[2]); + states[3].time = dtime; + /*fra=cfra;*/ + break; + case 3: + add_v3_v3v3(dx[3], states->vel, dv[2]); + mul_v3_fl(dx[3], dtime); + copy_v3_v3(dv[3], acceleration); + mul_v3_fl(dv[3], dtime); + + madd_v3_v3v3fl(pa->state.co, states->co, dx[0], 1.0f/6.0f); + madd_v3_v3fl(pa->state.co, dx[1], 1.0f/3.0f); + madd_v3_v3fl(pa->state.co, dx[2], 1.0f/3.0f); + madd_v3_v3fl(pa->state.co, dx[3], 1.0f/6.0f); + + madd_v3_v3v3fl(pa->state.vel, states->vel, dv[0], 1.0f/6.0f); + madd_v3_v3fl(pa->state.vel, dv[1], 1.0f/3.0f); + madd_v3_v3fl(pa->state.vel, dv[2], 1.0f/3.0f); + madd_v3_v3fl(pa->state.vel, dv[3], 1.0f/6.0f); + } + break; + case PART_INT_VERLET: /* Verlet integration */ + madd_v3_v3v3fl(pa->state.vel, pa->prev_state.vel, acceleration, dtime); + madd_v3_v3v3fl(pa->state.co, pa->prev_state.co, pa->state.vel, dtime); + + sub_v3_v3v3(pa->state.vel, pa->state.co, oldpos); + mul_v3_fl(pa->state.vel, 1.0f/dtime); + break; + } + } +} + /********************************************************************************************************* SPH fluid physics @@ -2142,7 +2190,7 @@ static void psys_update_effectors(ParticleSimulationData *sim) ***********************************************************************************************************/ #define PSYS_FLUID_SPRINGS_INITIAL_SIZE 256 -static ParticleSpring *add_fluid_spring(ParticleSystem *psys, ParticleSpring *spring) +static ParticleSpring *sph_spring_add(ParticleSystem *psys, ParticleSpring *spring) { /* Are more refs required? */ if(psys->alloc_fluidsprings == 0 || psys->fluid_springs == NULL) { @@ -2160,8 +2208,7 @@ static ParticleSpring *add_fluid_spring(ParticleSystem *psys, ParticleSpring *sp return psys->fluid_springs + psys->tot_fluidsprings - 1; } - -static void delete_fluid_spring(ParticleSystem *psys, int j) +static void sph_spring_delete(ParticleSystem *psys, int j) { if (j != psys->tot_fluidsprings - 1) psys->fluid_springs[j] = psys->fluid_springs[psys->tot_fluidsprings - 1]; @@ -2173,8 +2220,52 @@ static void delete_fluid_spring(ParticleSystem *psys, int j) psys->fluid_springs = (ParticleSpring*)MEM_reallocN(psys->fluid_springs, psys->alloc_fluidsprings * sizeof(ParticleSpring)); } } +static void sph_springs_modify(ParticleSystem *psys, float dtime){ + SPHFluidSettings *fluid = psys->part->fluid; + ParticleData *pa1, *pa2; + ParticleSpring *spring = psys->fluid_springs; + + float h, d, Rij[3], rij, Lij; + int i; + + float yield_ratio = fluid->yield_ratio; + float plasticity = fluid->plasticity_constant; + /* scale things according to dtime */ + float timefix = 25.f * dtime; + + if((fluid->flag & SPH_VISCOELASTIC_SPRINGS)==0 || fluid->spring_k == 0.f) + return; + + /* Loop through the springs */ + for(i=0; i<psys->tot_fluidsprings; i++, spring++) { + pa1 = psys->particles + spring->particle_index[0]; + pa2 = psys->particles + spring->particle_index[1]; + + sub_v3_v3v3(Rij, pa2->prev_state.co, pa1->prev_state.co); + rij = normalize_v3(Rij); + + /* adjust rest length */ + Lij = spring->rest_length; + d = yield_ratio * timefix * Lij; + + if (rij > Lij + d) // Stretch + spring->rest_length += plasticity * (rij - Lij - d) * timefix; + else if(rij < Lij - d) // Compress + spring->rest_length -= plasticity * (Lij - d - rij) * timefix; + + h = 4.f*pa1->size; + + if(spring->rest_length > h) + spring->delete_flag = 1; + } -static EdgeHash *build_fluid_springhash(ParticleSystem *psys) + /* Loop through springs backwaqrds - for efficient delete function */ + for (i=psys->tot_fluidsprings-1; i >= 0; i--) { + if(psys->fluid_springs[i].delete_flag) + sph_spring_delete(psys, i); + } +} +static EdgeHash *sph_springhash_build(ParticleSystem *psys) { EdgeHash *springhash = NULL; ParticleSpring *spring; @@ -2187,347 +2278,275 @@ static EdgeHash *build_fluid_springhash(ParticleSystem *psys) return springhash; } -static void particle_fluidsim(ParticleSystem *psys, int own_psys, ParticleData *pa, float dtime, float mass, float *gravity, EdgeHash *springhash) + +typedef struct SPHNeighbor { - SPHFluidSettings *fluid = psys->part->fluid; - KDTreeNearest *ptn = NULL; - ParticleData *npa; - ParticleSpring *spring = NULL; + ParticleSystem *psys; + int index; +} SPHNeighbor; +typedef struct SPHRangeData +{ + SPHNeighbor neighbors[128]; + int tot_neighbors; - float temp[3]; - float q, q1, u, I, D, rij, d, Lij; - float pressure_near, pressure; - float p=0, pnear=0; + float density, near_density; + float h; - float omega = fluid->viscosity_omega; - float beta = fluid->viscosity_beta; - float massfactor = 1.0f/mass; - float spring_k = fluid->spring_k; - float h = fluid->radius; - float L = fluid->rest_length * fluid->radius; + ParticleSystem *npsys; + ParticleData *pa; - int n, neighbours = BLI_kdtree_range_search(psys->tree, h, pa->prev_state.co, NULL, &ptn); - int spring_index = 0, index = own_psys ? pa - psys->particles : -1; + float massfac; + int use_size; +} SPHRangeData; +typedef struct SPHData { + ParticleSystem *psys[10]; + ParticleData *pa; + float mass; + EdgeHash *eh; + float *gravity; +}SPHData; +static void sph_density_accum_cb(void *userdata, int index, float squared_dist) +{ + SPHRangeData *pfr = (SPHRangeData *)userdata; + ParticleData *npa = pfr->npsys->particles + index; + float q; - /* pressure and near pressure */ - for(n=own_psys?1:0; n<neighbours; n++) { - /* disregard particles at the exact same location */ - if(ptn[n].dist < FLT_EPSILON) - continue; + if(npa == pfr->pa || squared_dist < FLT_EPSILON) + return; - sub_v3_v3(ptn[n].co, pa->prev_state.co); - mul_v3_fl(ptn[n].co, 1.f/ptn[n].dist); - q = ptn[n].dist/h; + /* Ugh! One particle has over 128 neighbors! Really shouldn't happen, + * but even if it does it shouldn't do any terrible harm if all are + * not taken into account - jahka + */ + if(pfr->tot_neighbors >= 128) + return; + + pfr->neighbors[pfr->tot_neighbors].index = index; + pfr->neighbors[pfr->tot_neighbors].psys = pfr->npsys; + pfr->tot_neighbors++; - if(q < 1.f) { - q1 = 1.f - q; + q = (1.f - sqrt(squared_dist)/pfr->h) * pfr->massfac; - p += q1*q1; - pnear += q1*q1*q1; - } - } + if(pfr->use_size) + q *= npa->size; - p *= mass; - pnear *= mass; - pressure = fluid->stiffness_k * (p - fluid->rest_density); - pressure_near = fluid->stiffness_knear * pnear; + pfr->density += q*q; + pfr->near_density += q*q*q; +} +static void sph_force_cb(void *sphdata_v, ParticleKey *state, float *force, float *impulse) +{ + SPHData *sphdata = (SPHData *)sphdata_v; + ParticleSystem **psys = sphdata->psys; + ParticleData *pa = sphdata->pa; + SPHFluidSettings *fluid = psys[0]->part->fluid; + ParticleSpring *spring = NULL; + SPHRangeData pfr; + SPHNeighbor *pfn; + float mass = sphdata->mass; + float *gravity = sphdata->gravity; + EdgeHash *springhash = sphdata->eh; - /* main calculations */ - for(n=own_psys?1:0; n<neighbours; n++) { - /* disregard particles at the exact same location */ - if(ptn[n].dist < FLT_EPSILON) - continue; + float q, u, rij, dv[3]; + float pressure, near_pressure; - npa = psys->particles + ptn[n].index; + float visc = fluid->viscosity_omega; + float stiff_visc = fluid->viscosity_beta * (fluid->flag & SPH_FAC_VISCOSITY ? fluid->viscosity_omega : 1.f); - rij = ptn[n].dist; - q = rij/h; - q1 = 1.f-q; + float inv_mass = 1.0f/mass; + float spring_constant = fluid->spring_k; + + float h = fluid->radius * (fluid->flag & SPH_FAC_RADIUS ? 4.f*pa->size : 1.f); /* 4.0 seems to be a pretty good value */ + float rest_density = fluid->rest_density * (fluid->flag & SPH_FAC_DENSITY ? 4.77f : 1.f); /* 4.77 is an experimentally determined density factor */ + float rest_length = fluid->rest_length * (fluid->flag & SPH_FAC_REST_LENGTH ? 2.588f * pa->size : 1.f); - /* Double Density Relaxation - Algorithm 2 (can't be thread safe!)*/ - D = dtime * dtime * (pressure + pressure_near*q1)*q1 * 0.5f; - madd_v3_v3fl(pa->state.co, ptn[n].co, -D * massfactor); - if(own_psys) - madd_v3_v3fl(npa->state.co, ptn[n].co, D * massfactor); + float stiffness = fluid->stiffness_k; + float stiffness_near_fac = fluid->stiffness_knear * (fluid->flag & SPH_FAC_REPULSION ? fluid->stiffness_k : 1.f); - if(index < ptn[n].index) { - /* Viscosity - Algorithm 5 */ - if(omega > 0.f || beta > 0.f) { - sub_v3_v3v3(temp, pa->state.vel, npa->state.vel); - u = dot_v3v3(ptn[n].co, temp); + ParticleData *npa; + float vec[3]; + float vel[3]; + float co[3]; - if (u > 0){ - I = dtime * (q1 * (omega * u + beta * u*u)) * 0.5f; - madd_v3_v3fl(pa->state.vel, ptn[n].co, -I * massfactor); + int i, spring_index, index = pa - psys[0]->particles; - if(own_psys) - madd_v3_v3fl(npa->state.vel, ptn[n].co, I * massfactor); - } - } + pfr.tot_neighbors = 0; + pfr.density = pfr.near_density = 0.f; + pfr.h = h; + pfr.pa = pa; - if(spring_k > 0.f) { - /* Viscoelastic spring force - Algorithm 4*/ - if (fluid->flag & SPH_VISCOELASTIC_SPRINGS && springhash){ - spring_index = GET_INT_FROM_POINTER(BLI_edgehash_lookup(springhash, index, ptn[n].index)); + for(i=0; i<10 && psys[i]; i++) { + pfr.npsys = psys[i]; + pfr.massfac = psys[i]->part->mass*inv_mass; + pfr.use_size = psys[i]->part->flag & PART_SIZEMASS; - if(spring_index) { - spring = psys->fluid_springs + spring_index - 1; - } - else { - ParticleSpring temp_spring; - temp_spring.particle_index[0] = index; - temp_spring.particle_index[1] = ptn[n].index; - temp_spring.rest_length = (fluid->flag & SPH_CURRENT_REST_LENGTH) ? rij : L; - temp_spring.delete_flag = 0; - - spring = add_fluid_spring(psys, &temp_spring); - } + BLI_bvhtree_range_query(psys[i]->bvhtree, state->co, h, sph_density_accum_cb, &pfr); + } - Lij = spring->rest_length; - d = fluid->yield_ratio * Lij; + pressure = stiffness * (pfr.density - rest_density); + near_pressure = stiffness_near_fac * pfr.near_density; - if (rij > Lij + d) // Stretch, 25 is just a multiplier for plasticity_constant value to counter default dtime of 1/25 - spring->rest_length += dtime * 25.f * fluid->plasticity_constant * (rij - Lij - d); - else if(rij < Lij - d) // Compress - spring->rest_length -= dtime * 25.f * fluid->plasticity_constant * (Lij - d - rij); - } - else { /* PART_SPRING_HOOKES - Hooke's spring force */ - /* L is a factor of radius */ - D = 0.5 * dtime * dtime * 10.f * fluid->spring_k * (1.f - L/h) * (L - rij); - - madd_v3_v3fl(pa->state.co, ptn[n].co, -D * massfactor); - if(own_psys) - madd_v3_v3fl(npa->state.co, ptn[n].co, D * massfactor); - } - } - } - } + pfn = pfr.neighbors; + for(i=0; i<pfr.tot_neighbors; i++, pfn++) { + npa = pfn->psys->particles + pfn->index; - /* Artificial buoyancy force in negative gravity direction */ - if (fluid->buoyancy >= 0.f && gravity) { - float B = -dtime * dtime * fluid->buoyancy * (p - fluid->rest_density) * 0.5f; - madd_v3_v3fl(pa->state.co, gravity, -B * massfactor); - } + madd_v3_v3v3fl(co, npa->prev_state.co, npa->prev_state.vel, state->time); - if(ptn) - MEM_freeN(ptn); -} + sub_v3_v3v3(vec, co, state->co); + rij = normalize_v3(vec); -static void apply_particle_fluidsim(Object *ob, ParticleSystem *psys, ParticleData *pa, float dtime, float *gravity, EdgeHash *springhash){ - ParticleTarget *pt; + q = (1.f - rij/h) * pfn->psys->part->mass * inv_mass; - particle_fluidsim(psys, 1, pa, dtime, psys->part->mass, gravity, springhash); - - /*----check other SPH systems (Multifluids) , each fluid has its own parameters---*/ - for(pt=psys->targets.first; pt; pt=pt->next) { - ParticleSystem *epsys = psys_get_target_system(ob, pt); + if(pfn->psys->part->flag & PART_SIZEMASS) + q *= npa->size; - if(epsys) - particle_fluidsim(epsys, 0, pa, dtime, psys->part->mass, gravity, NULL); - } - /*----------------------------------------------------------------*/ -} + copy_v3_v3(vel, npa->prev_state.vel); -static void apply_fluid_springs(ParticleSystem *psys, float timestep){ - SPHFluidSettings *fluid = psys->part->fluid; - ParticleData *pa1, *pa2; - ParticleSpring *spring = psys->fluid_springs; - - float h = fluid->radius; - float massfactor = 1.0f/psys->part->mass; - float D, Rij[3], rij, Lij; - int i; + /* Double Density Relaxation */ + madd_v3_v3fl(force, vec, -(pressure + near_pressure*q)*q); - if((fluid->flag & SPH_VISCOELASTIC_SPRINGS)==0 || fluid->spring_k == 0.f) - return; + /* Viscosity */ + if(visc > 0.f || stiff_visc > 0.f) { + sub_v3_v3v3(dv, vel, state->vel); + u = dot_v3v3(vec, dv); - /* Loop through the springs */ - for(i=0; i<psys->tot_fluidsprings; i++, spring++) { - Lij = spring->rest_length; + if(u < 0.f && visc > 0.f) + madd_v3_v3fl(force, vec, 0.5f * q * visc * u ); - if (Lij > h) { - spring->delete_flag = 1; + if(u > 0.f && stiff_visc > 0.f) + madd_v3_v3fl(force, vec, 0.5f * q * stiff_visc * u ); } - else { - pa1 = psys->particles + spring->particle_index[0]; - pa2 = psys->particles + spring->particle_index[1]; - sub_v3_v3v3(Rij, pa2->prev_state.co, pa1->prev_state.co); - rij = normalize_v3(Rij); + if(spring_constant > 0.f) { + /* Viscoelastic spring force */ + if (pfn->psys == psys[0] && fluid->flag & SPH_VISCOELASTIC_SPRINGS && springhash) { + spring_index = GET_INT_FROM_POINTER(BLI_edgehash_lookup(springhash, index, pfn->index)); - /* Calculate displacement and apply value */ - D = 0.5f * timestep * timestep * 10.f * fluid->spring_k * (1.f - Lij/h) * (Lij - rij); + if(spring_index) { + spring = psys[0]->fluid_springs + spring_index - 1; - madd_v3_v3fl(pa1->state.co, Rij, -D * pa1->state.time * pa1->state.time * massfactor); - madd_v3_v3fl(pa2->state.co, Rij, D * pa2->state.time * pa2->state.time * massfactor); + madd_v3_v3fl(force, vec, -10.f * spring_constant * (1.f - rij/h) * (spring->rest_length - rij)); + } + else if(fluid->spring_frames == 0 || (pa->prev_state.time-pa->time) <= fluid->spring_frames){ + ParticleSpring temp_spring; + temp_spring.particle_index[0] = index; + temp_spring.particle_index[1] = pfn->index; + temp_spring.rest_length = (fluid->flag & SPH_CURRENT_REST_LENGTH) ? rij : rest_length; + temp_spring.delete_flag = 0; + + sph_spring_add(psys[0], &temp_spring); + } + } + else {/* PART_SPRING_HOOKES - Hooke's spring force */ + madd_v3_v3fl(force, vec, -10.f * spring_constant * (1.f - rij/h) * (rest_length - rij)); + } } } - - /* Loop through springs backwaqrds - for efficient delete function */ - for (i=psys->tot_fluidsprings-1; i >= 0; i--) { - if(psys->fluid_springs[i].delete_flag) - delete_fluid_spring(psys, i); - } + + /* Artificial buoyancy force in negative gravity direction */ + if (fluid->buoyancy > 0.f && gravity) + madd_v3_v3fl(force, gravity, fluid->buoyancy * (pfr.density-rest_density)); } -/************************************************/ -/* Newtonian physics */ -/************************************************/ -/* gathers all forces that effect particles and calculates a new state for the particle */ -static void apply_particle_forces(ParticleSimulationData *sim, int p, float dfra, float cfra) -{ +static void sph_integrate(ParticleSimulationData *sim, ParticleData *pa, float dfra, float *gravity, EdgeHash *springhash){ + ParticleTarget *pt; + int i; + ParticleSettings *part = sim->psys->part; - ParticleData *pa = sim->psys->particles + p; - EffectedPoint epoint; - ParticleKey states[5], tkey; float timestep = psys_get_timestep(sim); - float force[3],impulse[3],dx[4][3],dv[4][3],oldpos[3]; - float dtime=dfra*timestep, time, pa_mass=part->mass, fac /*, fra=sim->psys->cfra*/; - int i, steps=1; - ParticleTexture ptex; + float pa_mass = part->mass * (part->flag & PART_SIZEMASS ? pa->size : 1.f); + float dtime = dfra*psys_get_timestep(sim); + int steps = 1; + float effector_acceleration[3]; + SPHData sphdata; - psys_get_texture(sim, pa, &ptex, PAMAP_PHYSICS, cfra); - - /* maintain angular velocity */ - VECCOPY(pa->state.ave,pa->prev_state.ave); - VECCOPY(oldpos,pa->state.co); + sphdata.psys[0] = sim->psys; + for(i=1, pt=sim->psys->targets.first; i<10; i++, pt=(pt?pt->next:NULL)) + sphdata.psys[i] = pt ? psys_get_target_system(sim->ob, pt) : NULL; - if(part->flag & PART_SIZEMASS) - pa_mass*=pa->size; + sphdata.pa = pa; + sphdata.gravity = gravity; + sphdata.mass = pa_mass; + sphdata.eh = springhash; - switch(part->integrator){ - case PART_INT_EULER: - steps=1; - break; - case PART_INT_MIDPOINT: - steps=2; - break; - case PART_INT_RK4: - steps=4; - break; - case PART_INT_VERLET: - steps=1; - break; - } + /* restore previous state and treat gravity & effectors as external acceleration*/ + sub_v3_v3v3(effector_acceleration, pa->state.vel, pa->prev_state.vel); + mul_v3_fl(effector_acceleration, 1.f/dtime); - copy_particle_key(states,&pa->state,1); + copy_particle_key(&pa->state, &pa->prev_state, 0); - for(i=0; i<steps; i++){ - force[0]=force[1]=force[2]=0.0; - impulse[0]=impulse[1]=impulse[2]=0.0; - /* add effectors */ - pd_point_from_particle(sim, pa, states+i, &epoint); - if(part->type != PART_HAIR || part->effector_weights->flag & EFF_WEIGHT_DO_HAIR) - pdDoEffectors(sim->psys->effectors, sim->colliders, part->effector_weights, &epoint, force, impulse); - - mul_v3_fl(force, ptex.field); - mul_v3_fl(impulse, ptex.field); - - /* calculate air-particle interaction */ - if(part->dragfac!=0.0f){ - fac=-part->dragfac*pa->size*pa->size*len_v3(states[i].vel); - VECADDFAC(force,force,states[i].vel,fac); - } + integrate_particle(part, pa, dtime, effector_acceleration, sph_force_cb, &sphdata); +} - /* brownian force */ - if(part->brownfac!=0.0){ - force[0]+=(BLI_frand()-0.5f)*part->brownfac; - force[1]+=(BLI_frand()-0.5f)*part->brownfac; - force[2]+=(BLI_frand()-0.5f)*part->brownfac; - } +/************************************************/ +/* Basic physics */ +/************************************************/ +typedef struct EfData +{ + ParticleTexture ptex; + ParticleSimulationData *sim; + ParticleData *pa; +} EfData; +static void basic_force_cb(void *efdata_v, ParticleKey *state, float *force, float *impulse) +{ + EfData *efdata = (EfData *)efdata_v; + ParticleSimulationData *sim = efdata->sim; + ParticleSettings *part = sim->psys->part; + ParticleData *pa = efdata->pa; + EffectedPoint epoint; - /* force to acceleration*/ - mul_v3_fl(force,1.0f/pa_mass); + /* add effectors */ + pd_point_from_particle(efdata->sim, efdata->pa, state, &epoint); + if(part->type != PART_HAIR || part->effector_weights->flag & EFF_WEIGHT_DO_HAIR) + pdDoEffectors(sim->psys->effectors, sim->colliders, part->effector_weights, &epoint, force, impulse); - /* add global acceleration (gravitation) */ - if(psys_uses_gravity(sim) - /* normal gravity is too strong for hair so it's disabled by default */ - && (part->type != PART_HAIR || part->effector_weights->flag & EFF_WEIGHT_DO_HAIR)) { - madd_v3_v3fl(force, sim->scene->physics_settings.gravity, part->effector_weights->global_gravity * ptex.gravity); - } - - /* calculate next state */ - VECADD(states[i].vel,states[i].vel,impulse); + mul_v3_fl(force, efdata->ptex.field); + mul_v3_fl(impulse, efdata->ptex.field); - switch(part->integrator){ - case PART_INT_EULER: - VECADDFAC(pa->state.co,states->co,states->vel,dtime); - VECADDFAC(pa->state.vel,states->vel,force,dtime); - break; - case PART_INT_MIDPOINT: - if(i==0){ - VECADDFAC(states[1].co,states->co,states->vel,dtime*0.5f); - VECADDFAC(states[1].vel,states->vel,force,dtime*0.5f); - /*fra=sim->psys->cfra+0.5f*dfra;*/ - } - else{ - VECADDFAC(pa->state.co,states->co,states[1].vel,dtime); - VECADDFAC(pa->state.vel,states->vel,force,dtime); - } - break; - case PART_INT_RK4: - switch(i){ - case 0: - VECCOPY(dx[0],states->vel); - mul_v3_fl(dx[0],dtime); - VECCOPY(dv[0],force); - mul_v3_fl(dv[0],dtime); + /* calculate air-particle interaction */ + if(part->dragfac != 0.0f) + madd_v3_v3fl(force, state->vel, -part->dragfac * pa->size * pa->size * len_v3(state->vel)); - VECADDFAC(states[1].co,states->co,dx[0],0.5f); - VECADDFAC(states[1].vel,states->vel,dv[0],0.5f); - /*fra=sim->psys->cfra+0.5f*dfra;*/ - break; - case 1: - VECADDFAC(dx[1],states->vel,dv[0],0.5f); - mul_v3_fl(dx[1],dtime); - VECCOPY(dv[1],force); - mul_v3_fl(dv[1],dtime); + /* brownian force */ + if(part->brownfac != 0.0){ + force[0] += (BLI_frand()-0.5f) * part->brownfac; + force[1] += (BLI_frand()-0.5f) * part->brownfac; + force[2] += (BLI_frand()-0.5f) * part->brownfac; + } +} +/* gathers all forces that effect particles and calculates a new state for the particle */ +static void basic_integrate(ParticleSimulationData *sim, int p, float dfra, float cfra) +{ + ParticleSettings *part = sim->psys->part; + ParticleData *pa = sim->psys->particles + p; + ParticleKey tkey; + float dtime=dfra*psys_get_timestep(sim), time; + float *gravity = NULL, gr[3]; + EfData efdata; - VECADDFAC(states[2].co,states->co,dx[1],0.5f); - VECADDFAC(states[2].vel,states->vel,dv[1],0.5f); - break; - case 2: - VECADDFAC(dx[2],states->vel,dv[1],0.5f); - mul_v3_fl(dx[2],dtime); - VECCOPY(dv[2],force); - mul_v3_fl(dv[2],dtime); + psys_get_texture(sim, pa, &efdata.ptex, PAMAP_PHYSICS, cfra); - VECADD(states[3].co,states->co,dx[2]); - VECADD(states[3].vel,states->vel,dv[2]); - /*fra=cfra;*/ - break; - case 3: - VECADD(dx[3],states->vel,dv[2]); - mul_v3_fl(dx[3],dtime); - VECCOPY(dv[3],force); - mul_v3_fl(dv[3],dtime); - - VECADDFAC(pa->state.co,states->co,dx[0],1.0f/6.0f); - VECADDFAC(pa->state.co,pa->state.co,dx[1],1.0f/3.0f); - VECADDFAC(pa->state.co,pa->state.co,dx[2],1.0f/3.0f); - VECADDFAC(pa->state.co,pa->state.co,dx[3],1.0f/6.0f); - - VECADDFAC(pa->state.vel,states->vel,dv[0],1.0f/6.0f); - VECADDFAC(pa->state.vel,pa->state.vel,dv[1],1.0f/3.0f); - VECADDFAC(pa->state.vel,pa->state.vel,dv[2],1.0f/3.0f); - VECADDFAC(pa->state.vel,pa->state.vel,dv[3],1.0f/6.0f); - } - break; - case PART_INT_VERLET: /* Verlet integration */ - VECADDFAC(pa->state.vel,pa->state.vel,force,dtime); - VECADDFAC(pa->state.co,pa->state.co,pa->state.vel,dtime); + efdata.pa = pa; + efdata.sim = sim; - VECSUB(pa->state.vel,pa->state.co,oldpos); - mul_v3_fl(pa->state.vel,1.0f/dtime); - break; - } + /* add global acceleration (gravitation) */ + if(psys_uses_gravity(sim) + /* normal gravity is too strong for hair so it's disabled by default */ + && (part->type != PART_HAIR || part->effector_weights->flag & EFF_WEIGHT_DO_HAIR)) { + zero_v3(gr); + madd_v3_v3fl(gr, sim->scene->physics_settings.gravity, part->effector_weights->global_gravity * efdata.ptex.gravity); + gravity = gr; } + /* maintain angular velocity */ + copy_v3_v3(pa->state.ave, pa->prev_state.ave); + + integrate_particle(part, pa, dtime, gravity, basic_force_cb, &efdata); + /* damp affects final velocity */ if(part->dampfac != 0.f) - mul_v3_fl(pa->state.vel, 1.f - part->dampfac * ptex.damp); + mul_v3_fl(pa->state.vel, 1.f - part->dampfac * efdata.ptex.damp); - VECCOPY(pa->state.ave, states->ave); + //VECCOPY(pa->state.ave, states->ave); /* finally we do guides */ time=(cfra-pa->time)/pa->lifetime; @@ -2547,7 +2566,7 @@ static void apply_particle_forces(ParticleSimulationData *sim, int p, float dfra } } } -static void rotate_particle(ParticleSettings *part, ParticleData *pa, float dfra, float timestep) +static void basic_rotate(ParticleSettings *part, ParticleData *pa, float dfra, float timestep) { float rotfac, rot1[4], rot2[4]={1.0,0.0,0.0,0.0}, dtime=dfra*timestep; @@ -2585,6 +2604,9 @@ static void rotate_particle(ParticleSettings *part, ParticleData *pa, float dfra normalize_qt(pa->state.rot); } +/************************************************/ +/* Collisions */ +/************************************************/ /* convert from triangle barycentric weights to quad mean value weights */ static void intersect_dm_quad_weights(float *v1, float *v2, float *v3, float *v4, float *w) { @@ -3372,11 +3394,11 @@ static void dynamics_step(ParticleSimulationData *sim, float cfra) case PART_PHYS_FLUID: { ParticleTarget *pt = psys->targets.first; - psys_update_particle_tree(psys, cfra); + psys_update_particle_bvhtree(psys, psys->cfra); for(; pt; pt=pt->next) { /* Updating others systems particle tree for fluid-fluid interaction */ if(pt->ob) - psys_update_particle_tree(BLI_findlink(&pt->ob->particlesystem, pt->psys-1), cfra); + psys_update_particle_bvhtree(BLI_findlink(&pt->ob->particlesystem, pt->psys-1), psys->cfra); } break; } @@ -3428,14 +3450,14 @@ static void dynamics_step(ParticleSimulationData *sim, float cfra) { LOOP_DYNAMIC_PARTICLES { /* do global forces & effectors */ - apply_particle_forces(sim, p, pa->state.time, cfra); + basic_integrate(sim, p, pa->state.time, cfra); /* deflection */ if(sim->colliders) deflect_particle(sim, p, pa->state.time, cfra); /* rotations */ - rotate_particle(part, pa, pa->state.time, timestep); + basic_rotate(part, pa, pa->state.time, timestep); } break; } @@ -3458,43 +3480,28 @@ static void dynamics_step(ParticleSimulationData *sim, float cfra) } case PART_PHYS_FLUID: { - EdgeHash *springhash = build_fluid_springhash(psys); + EdgeHash *springhash = sph_springhash_build(psys); float *gravity = NULL; if(psys_uses_gravity(sim)) gravity = sim->scene->physics_settings.gravity; - /* do global forces & effectors */ - LOOP_DYNAMIC_PARTICLES { - apply_particle_forces(sim, p, pa->state.time, cfra); - /* in fluids forces only effect velocity */ - copy_v3_v3(pa->state.co, pa->prev_state.co); - } - - /* actual fluids calculations (not threadsafe!) */ - LOOP_DYNAMIC_PARTICLES { - apply_particle_fluidsim(sim->ob, psys, pa, pa->state.time*timestep, gravity, springhash); - } - - /* Apply springs to particles */ - apply_fluid_springs(psys, timestep); - - /* apply velocity, collisions and rotation */ LOOP_DYNAMIC_PARTICLES { - /* velocity holds forces and viscosity, so apply them before collisions */ - madd_v3_v3fl(pa->state.co, pa->state.vel, pa->state.time*timestep); + /* do global forces & effectors */ + basic_integrate(sim, p, pa->state.time, cfra); - /* calculate new velocity based on new-old location */ - sub_v3_v3v3(pa->state.vel, pa->state.co, pa->prev_state.co); - mul_v3_fl(pa->state.vel, 1.f/(pa->state.time*timestep)); + /* actual fluids calculations */ + sph_integrate(sim, pa, pa->state.time, gravity, springhash); if(sim->colliders) deflect_particle(sim, p, pa->state.time, cfra); /* SPH particles are not physical particles, just interpolation particles, thus rotation has not a direct sense for them */ - rotate_particle(part, pa, pa->state.time, timestep); + basic_rotate(part, pa, pa->state.time, timestep); } + sph_springs_modify(psys, timestep); + if(springhash) { BLI_edgehash_free(springhash, NULL); springhash = NULL; @@ -3898,17 +3905,18 @@ void psys_check_boid_data(ParticleSystem *psys) static void fluid_default_settings(ParticleSettings *part){ SPHFluidSettings *fluid = part->fluid; - fluid->radius = 0.5f; fluid->spring_k = 0.f; fluid->plasticity_constant = 0.1f; fluid->yield_ratio = 0.1f; - fluid->rest_length = 0.5f; + fluid->rest_length = 1.f; fluid->viscosity_omega = 2.f; - fluid->viscosity_beta = 0.f; - fluid->stiffness_k = 0.1f; - fluid->stiffness_knear = 0.05f; - fluid->rest_density = 10.f; + fluid->viscosity_beta = 0.1f; + fluid->stiffness_k = 1.f; + fluid->stiffness_knear = 1.f; + fluid->rest_density = 1.f; fluid->buoyancy = 0.f; + fluid->radius = 1.f; + fluid->flag |= SPH_FAC_REPULSION|SPH_FAC_DENSITY|SPH_FAC_RADIUS|SPH_FAC_VISCOSITY|SPH_FAC_REST_LENGTH; } static void psys_prepare_physics(ParticleSimulationData *sim) diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c index cd8ea50b0ba..d5da98499bc 100644 --- a/source/blender/blenloader/intern/readfile.c +++ b/source/blender/blenloader/intern/readfile.c @@ -3330,6 +3330,7 @@ static void direct_link_particlesystems(FileData *fd, ListBase *particles) } psys->tree = NULL; + psys->bvhtree = NULL; } return; } @@ -11491,7 +11492,7 @@ static void do_versions(FileData *fd, Library *lib, Main *main) bScreen *sc; Brush *brush; Object *ob; - + ParticleSettings *part; Material *mat; int tex_nr, transp_tex; @@ -11539,6 +11540,12 @@ static void do_versions(FileData *fd, Library *lib, Main *main) } } } + + /* particle draw color from material */ + for(part = main->particle.first; part; part = part->id.next) { + if(part->draw & PART_DRAW_MAT_COL) + part->draw_col = PART_DRAW_COL_MAT; + } } /* put compatibility code here until next subversion bump */ diff --git a/source/blender/editors/space_view3d/drawobject.c b/source/blender/editors/space_view3d/drawobject.c index bd3c140c647..4979c3c2a2a 100644 --- a/source/blender/editors/space_view3d/drawobject.c +++ b/source/blender/editors/space_view3d/drawobject.c @@ -3465,7 +3465,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv Material *ma; float vel[3], imat[4][4]; float timestep, pixsize=1.0, pa_size, r_tilt, r_length; - float pa_time, pa_birthtime, pa_dietime, pa_health; + float pa_time, pa_birthtime, pa_dietime, pa_health, intensity; float cfra; float ma_r=0.0f, ma_g=0.0f, ma_b=0.0f; int a, totpart, totpoint=0, totve=0, drawn, draw_as, totchild=0; @@ -3529,7 +3529,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv if(v3d->zbuf) glDepthMask(1); - if((ma) && (part->draw&PART_DRAW_MAT_COL)) { + if((ma) && (part->draw_col == PART_DRAW_COL_MAT)) { rgb_float_to_byte(&(ma->r), tcol); ma_r = ma->r; @@ -3630,6 +3630,10 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv normalize_v3(imat[1]); } + if(ELEM3(draw_as, PART_DRAW_DOT, PART_DRAW_CROSS, PART_DRAW_LINE) + && part->draw_col > PART_DRAW_COL_MAT) + create_cdata = 1; + if(!create_cdata && pdd && pdd->cdata) { MEM_freeN(pdd->cdata); pdd->cdata = pdd->cd = NULL; @@ -3672,7 +3676,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv if(create_cdata && !pdd->cdata) pdd->cdata = MEM_callocN(tot_vec_size, "particle_cdata"); if(create_ndata && !pdd->ndata) - pdd->ndata = MEM_callocN(tot_vec_size, "particle_vdata"); + pdd->ndata = MEM_callocN(tot_vec_size, "particle_ndata"); if(part->draw & PART_DRAW_VEL && draw_as != PART_DRAW_LINE) { if(!pdd->vedata) @@ -3727,65 +3731,26 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv else pa_health = -1.0; -#if 0 // XXX old animation system - if((part->flag&PART_ABS_TIME)==0){ - if(ma && ma->ipo){ - IpoCurve *icu; - - /* correction for lifetime */ - calc_ipo(ma->ipo, 100.0f*pa_time); - - for(icu = ma->ipo->curve.first; icu; icu=icu->next) { - if(icu->adrcode == MA_COL_R) - ma_r = icu->curval; - else if(icu->adrcode == MA_COL_G) - ma_g = icu->curval; - else if(icu->adrcode == MA_COL_B) - ma_b = icu->curval; - } - } - if(part->ipo) { - IpoCurve *icu; - - /* correction for lifetime */ - calc_ipo(part->ipo, 100*pa_time); + r_tilt = 2.0f*(PSYS_FRAND(a + 21) - 0.5f); + r_length = PSYS_FRAND(a + 22); - for(icu = part->ipo->curve.first; icu; icu=icu->next) { - if(icu->adrcode == PART_SIZE) - pa_size = icu->curval; - } + if(part->draw_col > PART_DRAW_COL_MAT) { + switch(part->draw_col) { + case PART_DRAW_COL_VEL: + intensity = len_v3(pa->state.vel)/part->color_vec_max; + break; + case PART_DRAW_COL_ACC: + intensity = len_v3v3(pa->state.vel, pa->prev_state.vel)/((pa->state.time-pa->prev_state.time)*part->color_vec_max); + break; } + CLAMP(intensity, 0.f, 1.f); + weight_to_rgb(intensity, &ma_r, &ma_g, &ma_b); } -#endif // XXX old animation system - - r_tilt = 2.0f*(PSYS_FRAND(a + 21) - 0.5f); - r_length = PSYS_FRAND(a + 22); } else{ ChildParticle *cpa= &psys->child[a-totpart]; pa_time=psys_get_child_time(psys,cpa,cfra,&pa_birthtime,&pa_dietime); - -#if 0 // XXX old animation system - if((part->flag&PART_ABS_TIME)==0) { - if(ma && ma->ipo){ - IpoCurve *icu; - - /* correction for lifetime */ - calc_ipo(ma->ipo, 100.0f*pa_time); - - for(icu = ma->ipo->curve.first; icu; icu=icu->next) { - if(icu->adrcode == MA_COL_R) - ma_r = icu->curval; - else if(icu->adrcode == MA_COL_G) - ma_g = icu->curval; - else if(icu->adrcode == MA_COL_B) - ma_b = icu->curval; - } - } - } -#endif // XXX old animation system - pa_size=psys_get_child_size(psys,cpa,cfra,NULL); pa_health = -1.0; @@ -3911,7 +3876,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv if (1) { //ob_dt > OB_WIRE) { glEnableClientState(GL_NORMAL_ARRAY); - if(part->draw&PART_DRAW_MAT_COL) + if(part->draw_col == PART_DRAW_COL_MAT) glEnableClientState(GL_COLOR_ARRAY); glEnable(GL_LIGHTING); @@ -3940,7 +3905,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv if(1) { //ob_dt > OB_WIRE) { glNormalPointer(GL_FLOAT, sizeof(ParticleCacheKey), path->vel); - if(part->draw&PART_DRAW_MAT_COL) + if(part->draw_col == PART_DRAW_COL_MAT) glColorPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), path->col); } @@ -3956,7 +3921,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv if(1) { //ob_dt > OB_WIRE) { glNormalPointer(GL_FLOAT, sizeof(ParticleCacheKey), path->vel); - if(part->draw&PART_DRAW_MAT_COL) + if(part->draw_col == PART_DRAW_COL_MAT) glColorPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), path->col); } @@ -3966,7 +3931,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv /* restore & clean up */ if(1) { //ob_dt > OB_WIRE) { - if(part->draw&PART_DRAW_MAT_COL) + if(part->draw_col == PART_DRAW_COL_MAT) glDisable(GL_COLOR_ARRAY); glDisable(GL_COLOR_MATERIAL); } diff --git a/source/blender/makesdna/DNA_particle_types.h b/source/blender/makesdna/DNA_particle_types.h index b146d49365c..09053848b28 100644 --- a/source/blender/makesdna/DNA_particle_types.h +++ b/source/blender/makesdna/DNA_particle_types.h @@ -123,16 +123,23 @@ typedef struct ParticleData { typedef struct SPHFluidSettings { /*Particle Fluid*/ - float spring_k, radius, rest_length, plasticity_constant, yield_ratio; + float radius, spring_k, rest_length; + float plasticity_constant, yield_ratio; + float plasticity_balance, yield_balance; float viscosity_omega, viscosity_beta; float stiffness_k, stiffness_knear, rest_density; float buoyancy; - int flag, pad; + int flag, spring_frames; } SPHFluidSettings; /* fluid->flag */ #define SPH_VISCOELASTIC_SPRINGS 1 #define SPH_CURRENT_REST_LENGTH 2 +#define SPH_FAC_REPULSION 4 +#define SPH_FAC_DENSITY 8 +#define SPH_FAC_RADIUS 16 +#define SPH_FAC_VISCOSITY 32 +#define SPH_FAC_REST_LENGTH 64 typedef struct ParticleSettings { ID id; @@ -143,12 +150,12 @@ typedef struct ParticleSettings { struct EffectorWeights *effector_weights; - int flag; + int flag, rt; short type, from, distr, texact; /* physics modes */ short phystype, rotmode, avemode, reactevent; short draw, draw_as, draw_size, childtype; - short ren_as, subframes; + short ren_as, subframes, draw_col; /* number of path segments, power of 2 except */ short draw_step, ren_step; short hair_step, keys_step; @@ -157,12 +164,15 @@ typedef struct ParticleSettings { short adapt_angle, adapt_pix; short disp, omat, interpolation, rotfrom, integrator; - short kink, kink_axis, rt2; + short kink, kink_axis; /* billboards */ short bb_align, bb_uv_split, bb_anim, bb_split_offset; float bb_tilt, bb_rand_tilt, bb_offset[2]; + /* draw color */ + float color_vec_max; + /* simplification */ short simplify_flag, simplify_refsize; float simplify_rate, simplify_transition; @@ -249,9 +259,9 @@ typedef struct ParticleSystem{ /* note, make sure all (runtime) are NULL's in char name[32]; /* particle system name */ float imat[4][4]; /* used for duplicators */ - float cfra, tree_frame; + float cfra, tree_frame, bvhtree_frame; int seed, child_seed; - int flag, totpart, totunexist, totchild, totcached, totchildcache, rt; + int flag, totpart, totunexist, totchild, totcached, totchildcache; short recalc, target_psys, totkeyed, bakespace; char bb_uvname[3][32]; /* billboard uv name */ @@ -271,7 +281,8 @@ typedef struct ParticleSystem{ /* note, make sure all (runtime) are NULL's in ParticleSpring *fluid_springs; int tot_fluidsprings, alloc_fluidsprings; - struct KDTree *tree; /* used for interactions with self and other systems */ + struct KDTree *tree; /* used for interactions with self and other systems */ + struct BVHTree *bvhtree; /* used for interactions with self and other systems */ struct ParticleDrawData *pdd; @@ -375,10 +386,17 @@ typedef struct ParticleSystem{ /* note, make sure all (runtime) are NULL's in #define PART_DRAW_RAND_GR 1024 #define PART_DRAW_REN_ADAPT 2048 #define PART_DRAW_VEL_LENGTH (1<<12) -#define PART_DRAW_MAT_COL (1<<13) +#define PART_DRAW_MAT_COL (1<<13) /* deprecated, but used in do_versions */ #define PART_DRAW_WHOLE_GR (1<<14) #define PART_DRAW_REN_STRAND (1<<15) +/* part->draw_col */ +#define PART_DRAW_COL_NONE 0 +#define PART_DRAW_COL_MAT 1 +#define PART_DRAW_COL_VEL 2 +#define PART_DRAW_COL_ACC 3 + + /* part->simplify_flag */ #define PART_SIMPLIFY_ENABLE 1 #define PART_SIMPLIFY_VIEWPORT 2 diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c index 57d6e72a102..069f674bf4a 100644 --- a/source/blender/makesrna/intern/rna_particle.c +++ b/source/blender/makesrna/intern/rna_particle.c @@ -1073,10 +1073,9 @@ static void rna_def_fluid_settings(BlenderRNA *brna) RNA_def_property_ui_text(prop, "Interaction Radius", "Fluid interaction radius"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); - /* Hidden in ui to give a little easier user experience. */ prop= RNA_def_property(srna, "rest_length", PROP_FLOAT, PROP_NONE); - RNA_def_property_range(prop, 0.0f, 1.0f); - RNA_def_property_ui_text(prop, "Rest Length", "Spring rest length (factor of interaction radius)"); + RNA_def_property_range(prop, 0.0f, 2.0f); + RNA_def_property_ui_text(prop, "Rest Length", "Spring rest length (factor of particle radius)"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); prop= RNA_def_property(srna, "use_viscoelastic_springs", PROP_BOOLEAN, PROP_NONE); @@ -1086,12 +1085,12 @@ static void rna_def_fluid_settings(BlenderRNA *brna) prop= RNA_def_property(srna, "use_initial_rest_length", PROP_BOOLEAN, PROP_NONE); RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_CURRENT_REST_LENGTH); - RNA_def_property_ui_text(prop, "Initial Rest Length", "Use the initial length as spring rest length instead of interaction radius/2"); + RNA_def_property_ui_text(prop, "Initial Rest Length", "Use the initial length as spring rest length instead of 2 * particle size"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); prop= RNA_def_property(srna, "plasticity", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "plasticity_constant"); - RNA_def_property_range(prop, 0.0f, 1.0f); + RNA_def_property_range(prop, 0.0f, 100.0f); RNA_def_property_ui_text(prop, "Plasticity", "How much the spring rest length can change after the elastic limit is crossed"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); @@ -1100,6 +1099,11 @@ static void rna_def_fluid_settings(BlenderRNA *brna) RNA_def_property_range(prop, 0.0f, 1.0f); RNA_def_property_ui_text(prop, "Elastic Limit", "How much the spring has to be stretched/compressed in order to change it's rest length"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + prop= RNA_def_property(srna, "spring_frames", PROP_INT, PROP_NONE); + RNA_def_property_range(prop, 0.0f, 100.0f); + RNA_def_property_ui_text(prop, "Spring Frames", "Create springs for this number of frames since particles birth (0 is always)"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); /* Viscosity */ prop= RNA_def_property(srna, "linear_viscosity", PROP_FLOAT, PROP_NONE); @@ -1109,42 +1113,69 @@ static void rna_def_fluid_settings(BlenderRNA *brna) RNA_def_property_ui_text(prop, "Viscosity", "Linear viscosity"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); - prop= RNA_def_property(srna, "square_viscosity", PROP_FLOAT, PROP_NONE); + prop= RNA_def_property(srna, "stiff_viscosity", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "viscosity_beta"); RNA_def_property_range(prop, 0.0f, 100.0f); - RNA_def_property_ui_range(prop, 0.0f, 10.0f, 1, 3); - RNA_def_property_ui_text(prop, "Square viscosity", "Square viscosity"); + RNA_def_property_ui_range(prop, 0.0f, 2.0f, 1, 3); + RNA_def_property_ui_text(prop, "Stiff viscosity", "Creates viscosity for expanding fluid)"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); /* Double density relaxation */ - prop= RNA_def_property(srna, "density_force", PROP_FLOAT, PROP_NONE); + prop= RNA_def_property(srna, "stiffness", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "stiffness_k"); RNA_def_property_range(prop, 0.0f, 100.0f); RNA_def_property_ui_range(prop, 0.0f, 10.0f, 1, 3); - RNA_def_property_ui_text(prop, "Density Force", "How strongly the fluid tends to rest density"); + RNA_def_property_ui_text(prop, "Stiffness", "How incompressible the fluid is"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); - prop= RNA_def_property(srna, "repulsion_force", PROP_FLOAT, PROP_NONE); + prop= RNA_def_property(srna, "repulsion", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "stiffness_knear"); RNA_def_property_range(prop, 0.0f, 100.0f); - RNA_def_property_ui_range(prop, 0.0f, 10.0f, 1, 3); - RNA_def_property_ui_text(prop, "Repulsion", "How strongly the fluid tries to keep from clustering"); + RNA_def_property_ui_range(prop, 0.0f, 2.0f, 1, 3); + RNA_def_property_ui_text(prop, "Repulsion Factor", "How strongly the fluid tries to keep from clustering (factor of stiffness)"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); prop= RNA_def_property(srna, "rest_density", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "rest_density"); - RNA_def_property_range(prop, 0.0f, 1000.0f); - RNA_def_property_ui_range(prop, 0.0f, 100.0f, 1, 3); - RNA_def_property_ui_text(prop, "Rest Density", "Rest density of the fluid"); + RNA_def_property_range(prop, 0.0f, 100.0f); + RNA_def_property_ui_range(prop, 0.0f, 2.0f, 1, 3); + RNA_def_property_ui_text(prop, "Rest Density", "Fluid rest density"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); /* Buoyancy */ prop= RNA_def_property(srna, "buoyancy", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "buoyancy"); - RNA_def_property_range(prop, 0.0f, 1.0f); + RNA_def_property_range(prop, 0.0f, 10.0f); + RNA_def_property_ui_range(prop, 0.0f, 1.0f, 1, 3); RNA_def_property_ui_text(prop, "Buoyancy", "Artificial buoyancy force in negative gravity direction based on pressure differences inside the fluid"); RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + /* Factor flags */ + prop= RNA_def_property(srna, "factor_repulsion", PROP_BOOLEAN, PROP_NONE); + RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_FAC_REPULSION); + RNA_def_property_ui_text(prop, "Factor Repulsion", "Repulsion is a factor of stiffness"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + prop= RNA_def_property(srna, "factor_density", PROP_BOOLEAN, PROP_NONE); + RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_FAC_DENSITY); + RNA_def_property_ui_text(prop, "Factor Density", "Density is calculated as a factor of default density (depends on particle size)"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + prop= RNA_def_property(srna, "factor_radius", PROP_BOOLEAN, PROP_NONE); + RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_FAC_RADIUS); + RNA_def_property_ui_text(prop, "Factor Radius", "Interaction radius is a factor of 4 * particle size"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + prop= RNA_def_property(srna, "factor_stiff_viscosity", PROP_BOOLEAN, PROP_NONE); + RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_FAC_VISCOSITY); + RNA_def_property_ui_text(prop, "Factor Stiff Viscosity", "Stiff viscosity is a factor of normal viscosity"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); + + prop= RNA_def_property(srna, "factor_rest_length", PROP_BOOLEAN, PROP_NONE); + RNA_def_property_boolean_sdna(prop, NULL, "flag", SPH_FAC_REST_LENGTH); + RNA_def_property_ui_text(prop, "Factor Rest Length", "Spring rest length is a factor of 2 * particle size"); + RNA_def_property_update(prop, 0, "rna_Particle_reset"); } static void rna_def_particle_settings_mtex(BlenderRNA *brna) @@ -1483,6 +1514,14 @@ static void rna_def_particle_settings(BlenderRNA *brna) {0, NULL, 0, NULL, NULL} }; + static EnumPropertyItem draw_col_items[] = { + {PART_DRAW_COL_NONE, "NONE", 0, "None", ""}, + {PART_DRAW_COL_MAT, "MATERIAL", 0, "Material", ""}, + {PART_DRAW_COL_VEL, "VELOCITY", 0, "Velocity", ""}, + {PART_DRAW_COL_ACC, "ACCELERATION", 0, "Acceleration", ""}, + {0, NULL, 0, NULL, NULL} + }; + srna= RNA_def_struct(brna, "ParticleSettings", "ID"); RNA_def_struct_ui_text(srna, "Particle Settings", "Particle settings, reusable by multiple particle systems"); RNA_def_struct_ui_icon(srna, ICON_PARTICLE_DATA); @@ -1725,11 +1764,6 @@ static void rna_def_particle_settings(BlenderRNA *brna) RNA_def_property_ui_text(prop, "Speed", "Multiply line length by particle speed"); RNA_def_property_update(prop, 0, "rna_Particle_redo"); - prop= RNA_def_property(srna, "show_material_color", PROP_BOOLEAN, PROP_NONE); - RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_MAT_COL); - RNA_def_property_ui_text(prop, "Material Color", "Draw particles using material's diffuse color"); - RNA_def_property_update(prop, 0, "rna_Particle_redo"); - prop= RNA_def_property(srna, "use_whole_group", PROP_BOOLEAN, PROP_NONE); RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_WHOLE_GR); RNA_def_property_ui_text(prop, "Whole Group", "Use whole group at once"); @@ -1754,6 +1788,12 @@ static void rna_def_particle_settings(BlenderRNA *brna) RNA_def_property_ui_text(prop, "Particle Rendering", "How particles are rendered"); RNA_def_property_update(prop, 0, "rna_Particle_redo"); + prop= RNA_def_property(srna, "draw_color", PROP_ENUM, PROP_NONE); + RNA_def_property_enum_sdna(prop, NULL, "draw_col"); + RNA_def_property_enum_items(prop, draw_col_items); + RNA_def_property_ui_text(prop, "Draw Color", "Draw additional particle data as a color"); + RNA_def_property_update(prop, 0, "rna_Particle_redo"); + prop= RNA_def_property(srna, "draw_size", PROP_INT, PROP_NONE); RNA_def_property_range(prop, 0, 1000); RNA_def_property_ui_range(prop, 0, 100, 1, 0); @@ -1865,6 +1905,12 @@ static void rna_def_particle_settings(BlenderRNA *brna) RNA_def_property_ui_text(prop, "Tilt", "Tilt of the billboards"); RNA_def_property_update(prop, 0, "rna_Particle_redo"); + prop= RNA_def_property(srna, "color_maximum", PROP_FLOAT, PROP_NONE); + RNA_def_property_float_sdna(prop, NULL, "color_vec_max"); + RNA_def_property_range(prop, 0.01f, 100.0f); + RNA_def_property_ui_text(prop, "Color Maximum", "Maximum length of the particle color vector"); + RNA_def_property_update(prop, 0, "rna_Particle_redo"); + prop= RNA_def_property(srna, "billboard_tilt_random", PROP_FLOAT, PROP_NONE); RNA_def_property_float_sdna(prop, NULL, "bb_rand_tilt"); RNA_def_property_range(prop, 0.0f, 1.0f); |