Revision: 26212
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=26212
Author: jhk
Date: 2010-01-23 16:45:01 +0100 (Sat, 23 Jan 2010)
Log Message:
-----------
Small fixes for particles.
* Particle collision with size was broken since raytrace optimizations by
jaguarandi, now the collision code falls back to old slower method when the
collision ray has a radius.
* Single goal/avoid object now works for boids.
* Some tiny improvements on collision avoidance for boids.
Modified Paths:
--------------
trunk/blender/source/blender/blenkernel/intern/boids.c
trunk/blender/source/blender/blenkernel/intern/effect.c
trunk/blender/source/blender/blenlib/intern/BLI_kdopbvh.c
Modified: trunk/blender/source/blender/blenkernel/intern/boids.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/boids.c 2010-01-23
14:29:56 UTC (rev 26211)
+++ trunk/blender/source/blender/blenkernel/intern/boids.c 2010-01-23
15:45:01 UTC (rev 26212)
@@ -77,6 +77,7 @@
EffectedPoint epoint;
ListBase *effectors = bbd->sim->psys->effectors;
EffectorCache *cur, *eff = NULL;
+ EffectorCache temp_eff;
EffectorData efd, cur_efd;
float mul = (rule->type == eBoidRuleType_Avoid ? 1.0 : -1.0);
float priority = 0.0f, len = 0.0f;
@@ -91,7 +92,7 @@
if(gabr->ob && (rule->type != eBoidRuleType_Goal || gabr->ob !=
bpa->ground)) {
if(gabr->ob == eob) {
- /* TODO: objects without any effector and
effectors with multiple points */
+ /* TODO: effectors with multiple points */
if(get_effector_data(cur, &efd, &epoint, 0)) {
if(cur->pd && cur->pd->forcefield ==
PFIELD_BOID)
priority = mul * pd->f_strength
* effector_falloff(cur, &efd, &epoint, bbd->part->effector_weights);
@@ -105,7 +106,7 @@
}
else if(rule->type == eBoidRuleType_Goal && eob == bpa->ground)
; /* skip current object */
- else if(pd->forcefield == PFIELD_BOID && mul * pd->f_strength >
0.0f && get_effector_data(eff, &efd, &epoint, 0)) {
+ else if(pd->forcefield == PFIELD_BOID && mul * pd->f_strength >
0.0f && get_effector_data(cur, &cur_efd, &epoint, 0)) {
float temp = mul * pd->f_strength *
effector_falloff(cur, &cur_efd, &epoint, bbd->part->effector_weights);
if(temp == 0.0f)
@@ -125,11 +126,21 @@
}
}
+ /* if the object doesn't have effector data we have to fake it */
+ if(eff == NULL && gabr->ob) {
+ memset(&temp_eff, 0, sizeof(EffectorCache));
+ temp_eff.ob = gabr->ob;
+ temp_eff.scene = bbd->sim->scene;
+ eff = &temp_eff;
+ get_effector_data(eff, &efd, &epoint, 0);
+ priority = 1.0f;
+ }
+
/* then use that effector */
if(priority > (rule->type==eBoidRuleType_Avoid ? gabr->fear_factor :
0.0f)) { /* with avoid, factor is "fear factor" */
Object *eob = eff->ob;
- PartDeflect *pd = eob->pd;
- float surface = pd->shape == PFIELD_SHAPE_SURFACE ? 1.0f : 0.0f;
+ PartDeflect *pd = eff->pd;
+ float surface = (pd && pd->shape == PFIELD_SHAPE_SURFACE) ?
1.0f : 0.0f;
if(gabr->options & BRULE_GOAL_AVOID_PREDICT) {
/* estimate future location of target */
@@ -219,10 +230,19 @@
}
/* then avoid that object */
if(hit.index>=0) {
- /* TODO: not totally happy with this part */
t = hit.dist/col.ray_len;
- VECCOPY(bbd->wanted_co, col.nor);
+ /* avoid head-on collision */
+ if(dot_v3v3(col.nor, pa->prev_state.ave) < -0.99) {
+ /* don't know why, but uneven range [0.0,1.0] */
+ /* works much better than even [-1.0,1.0] */
+ bbd->wanted_co[0] = BLI_frand();
+ bbd->wanted_co[1] = BLI_frand();
+ bbd->wanted_co[2] = BLI_frand();
+ }
+ else {
+ VECCOPY(bbd->wanted_co, col.nor);
+ }
mul_v3_fl(bbd->wanted_co, (1.0f - t) *
val->personal_space * pa->size);
Modified: trunk/blender/source/blender/blenkernel/intern/effect.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/effect.c 2010-01-23
14:29:56 UTC (rev 26211)
+++ trunk/blender/source/blender/blenkernel/intern/effect.c 2010-01-23
15:45:01 UTC (rev 26212)
@@ -593,7 +593,7 @@
float cfra = eff->scene->r.cfra;
int ret = 0;
- if(eff->pd->shape==PFIELD_SHAPE_SURFACE && eff->surmd) {
+ if(eff->pd && eff->pd->shape==PFIELD_SHAPE_SURFACE && eff->surmd) {
/* closest point in the object surface is an effector */
float vec[3];
@@ -606,7 +606,7 @@
efd->size = 0.0f;
}
- else if(eff->pd->shape==PFIELD_SHAPE_POINTS) {
+ else if(eff->pd && eff->pd->shape==PFIELD_SHAPE_POINTS) {
if(eff->ob->derivedFinal) {
DerivedMesh *dm = eff->ob->derivedFinal;
@@ -667,7 +667,7 @@
normalize_v3(efd->nor);
/* for vortex the shape chooses between old / new force */
- if(eff->pd->shape == PFIELD_SHAPE_PLANE) {
+ if(eff->pd && eff->pd->shape == PFIELD_SHAPE_PLANE) {
/* efd->loc is closes point on effector xy-plane */
float temp[3];
sub_v3_v3v3(temp, point->loc, ob->obmat[3]);
@@ -698,7 +698,7 @@
efd->distance = len_v3(efd->vec_to_point);
/* rest length for harmonic effector, will have to see later if
this could be extended to other effectors */
- if(eff->pd->forcefield == PFIELD_HARMONIC && eff->pd->f_size)
+ if(eff->pd && eff->pd->forcefield == PFIELD_HARMONIC &&
eff->pd->f_size)
mul_v3_fl(efd->vec_to_point,
(efd->distance-eff->pd->f_size)/efd->distance);
if(eff->flag & PE_USE_NORMAL_DATA) {
Modified: trunk/blender/source/blender/blenlib/intern/BLI_kdopbvh.c
===================================================================
--- trunk/blender/source/blender/blenlib/intern/BLI_kdopbvh.c 2010-01-23
14:29:56 UTC (rev 26211)
+++ trunk/blender/source/blender/blenlib/intern/BLI_kdopbvh.c 2010-01-23
15:45:01 UTC (rev 26212)
@@ -1502,7 +1502,8 @@
//ray-bv is really fast.. and simple tests revealed its worth to test it
//before calling the ray-primitive functions
- float dist = fast_ray_nearest_hit(data, node);
+ /* XXX: temporary solution for particles untill fast_ray_nearest_hit
supports ray.radius */
+ float dist = (data->ray.radius > 0.0f) ? ray_nearest_hit(data,
node->bv) : fast_ray_nearest_hit(data, node);
if(dist >= data->hit.dist) return;
if(node->totnode == 0)
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