Commit: afa33574deb1dea37e92559cad2e825b20a0ac4c
Author: Martin Felke
Date: Thu Aug 17 17:34:37 2017 +0200
Branches: fracture_modifier
https://developer.blender.org/rBafa33574deb1dea37e92559cad2e825b20a0ac4c
fixes for centroid and volume calculation for non-manifolds, fix attempt for
storage of merge info
===================================================================
M source/blender/blenkernel/BKE_fracture.h
M source/blender/blenkernel/intern/fracture.c
M source/blender/blenkernel/intern/rigidbody.c
M source/blender/modifiers/intern/MOD_fracture.c
===================================================================
diff --git a/source/blender/blenkernel/BKE_fracture.h
b/source/blender/blenkernel/BKE_fracture.h
index eb748e1eac9..82f1b9031b4 100644
--- a/source/blender/blenkernel/BKE_fracture.h
+++ b/source/blender/blenkernel/BKE_fracture.h
@@ -80,6 +80,7 @@ struct Shard *BKE_custom_data_to_shard(struct Shard *s,
struct DerivedMesh *dm);
/* utility functions */
bool BKE_fracture_shard_center_median(struct Shard *shard, float cent[3]);
bool BKE_fracture_shard_center_centroid(struct Shard *shard, float cent[3]);
+bool BKE_fracture_shard_center_centroid_area(struct Shard *shard, float
cent[3]);
float BKE_shard_calc_minmax(struct Shard *shard);
void BKE_fracmesh_free(struct FracMesh *fm, bool doCustomData);
diff --git a/source/blender/blenkernel/intern/fracture.c
b/source/blender/blenkernel/intern/fracture.c
index 055848c35d3..61fc9679a6e 100644
--- a/source/blender/blenkernel/intern/fracture.c
+++ b/source/blender/blenkernel/intern/fracture.c
@@ -313,16 +313,15 @@ bool BKE_fracture_shard_center_centroid(Shard *shard,
float r_cent[3])
mul_v3_fl(r_cent, 0.25f / total_volume);
}
- /* this can happen for non-manifold objects, fallback to median */
- if (UNLIKELY(!is_finite_v3(r_cent))) {
- return BKE_fracture_shard_center_median(shard, r_cent);
+ /* this can happen for non-manifold objects, first fallback to old area
based method, then fallback to median there */
+ if (!is_finite_v3(r_cent) || total_volume < 0.000001f) {
+ return BKE_fracture_shard_center_centroid_area(shard, r_cent);
}
copy_v3_v3(shard->centroid, r_cent);
return (shard->totpoly != 0);
}
-#if 0
/* note, results won't be correct if polygon is non-planar */
/* copied from mesh_evaluate.c */
static float mesh_calc_poly_planar_area_centroid(
@@ -358,7 +357,7 @@ static float mesh_calc_poly_planar_area_centroid(
// old method, keep for now in case new has different results
/* modified from BKE_mesh_center_centroid */
-bool BKE_fracture_shard_center_centroid(Shard *shard, float cent[3])
+bool BKE_fracture_shard_center_centroid_area(Shard *shard, float cent[3])
{
int i = shard->totpoly;
MPoly *mpoly;
@@ -390,7 +389,6 @@ bool BKE_fracture_shard_center_centroid(Shard *shard, float
cent[3])
return (shard->totpoly != 0);
}
-#endif
void BKE_shard_free(Shard *s, bool doCustomData)
{
diff --git a/source/blender/blenkernel/intern/rigidbody.c
b/source/blender/blenkernel/intern/rigidbody.c
index 3d5ec92bec5..c91cae77d8d 100644
--- a/source/blender/blenkernel/intern/rigidbody.c
+++ b/source/blender/blenkernel/intern/rigidbody.c
@@ -2573,11 +2573,13 @@ void BKE_rigidbody_calc_threshold(float max_con_mass,
FractureModifierData *rmd,
static int DM_mesh_minmax(DerivedMesh *dm, float r_min[3], float r_max[3])
{
- MVert *v;
- int i = 0;
- for (i = 0; i < dm->numVertData; i++) {
- v = CDDM_get_vert(dm, i);
- minmax_v3v3_v3(r_min, r_max, v->co);
+ MVert *mvert;
+ int i = 0, totvert;
+
+ mvert = dm->getVertArray(dm);
+ totvert = dm->getNumVerts(dm);
+ for (i = 0; i < totvert; i++) {
+ minmax_v3v3_v3(r_min, r_max, mvert[i].co);
}
return (dm->numVertData != 0);
@@ -2609,16 +2611,19 @@ static float box_volume(float size[3])
float volume = 0.0001f;
volume = size[0] * size[1] * size[2];
- if (size[0] == 0) {
+ if (size[0] < 0.000001f) {
volume = size[1] * size[2];
}
- else if (size[1] == 0) {
+ else if (size[1] < 0.000001f) {
volume = size[0] * size[2];
}
- else if (size[2] == 0) {
+ else if (size[2] < 0.000001f) {
volume = size[0] * size[1];
}
+ if (volume == 0.0f)
+ volume = 0.0001f;
+
return volume;
}
@@ -2704,8 +2709,11 @@ float BKE_rigidbody_calc_volume(DerivedMesh *dm,
RigidBodyOb *rbo, Object* ob)
BKE_mesh_calc_volume(mvert, totvert, mlooptri,
tottri, mloop, &volume, NULL);
- if (volume == 0.0f)
- volume = 0.00001f;
+ if (volume < 0.000001f)
+ {
+ //fallback to boxvolume in case we get
crap here
+ volume = box_volume(size);
+ }
}
break;
}
diff --git a/source/blender/modifiers/intern/MOD_fracture.c
b/source/blender/modifiers/intern/MOD_fracture.c
index 65737110b3a..12be142b9ce 100644
--- a/source/blender/modifiers/intern/MOD_fracture.c
+++ b/source/blender/modifiers/intern/MOD_fracture.c
@@ -4288,7 +4288,7 @@ static void do_reset_automerge(FractureModifierData* fmd)
RigidBodyWorld *rbw = sc->rigidbody_world;
int frame = (int)BKE_scene_frame_get(sc);
int start = (rbw && rbw->pointcache ) ?
MAX2(rbw->pointcache->startframe, sc->r.sfra) : sc->r.sfra;
- if (frame == start) {
+ if (frame == start || frame > fmd->last_frame + 1 || frame <
fmd->last_frame - 1) {
reset_automerge(fmd);
}
}
@@ -4946,11 +4946,17 @@ static DerivedMesh *applyModifier(ModifierData *md,
Object *ob,
if (fmd->fracture_mode == MOD_FRACTURE_PREFRACTURED)
{
bool init = false;
+
+ //just track the frames for resetting automerge data when
jumping
+ int frame = (int)BKE_scene_frame_get(fmd->modifier.scene);
+
//deactivate multiple settings for now, not working properly
XXX TODO (also deactivated in RNA and python)
final_dm = do_prefractured(fmd, ob, pack_dm);
if (init)
fmd->shard_count = 10;
+
+ fmd->last_frame = frame;
}
else if (fmd->fracture_mode == MOD_FRACTURE_DYNAMIC)
{
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