diff options
| author | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-09-14 17:43:00 +0300 |
|---|---|---|
| committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-09-14 17:50:02 +0300 |
| commit | c75bd25cd87e8648749f4b19bc90c269b2431251 (patch) | |
| tree | 04bf63a326ee2cb8da5233a9a60c5e948cb6ace5 /source/blender/blenkernel/intern/particle_distribute.c | |
| parent | 3c1c3b64c532182ee9273929e89005f2c195b2be (diff) | |
Fix T52732: Particle system volume grid particles out of volume
Use more watertight and robust intersection test.
It uses now ray to triangle intersection, but it's all fine because segment was
covering the whole bounding box anyway.
Diffstat (limited to 'source/blender/blenkernel/intern/particle_distribute.c')
| -rw-r--r-- | source/blender/blenkernel/intern/particle_distribute.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/source/blender/blenkernel/intern/particle_distribute.c b/source/blender/blenkernel/intern/particle_distribute.c index fe84504327c..1ef4d005f0d 100644 --- a/source/blender/blenkernel/intern/particle_distribute.c +++ b/source/blender/blenkernel/intern/particle_distribute.c @@ -39,6 +39,7 @@ #include "BLI_jitter.h" #include "BLI_kdtree.h" #include "BLI_math.h" +#include "BLI_math_geom.h" #include "BLI_rand.h" #include "BLI_sort.h" #include "BLI_task.h" @@ -213,14 +214,22 @@ static void distribute_grid(DerivedMesh *dm, ParticleSystem *psys) copy_v3_v3(co2, co1); co2[a] += delta[a] + 0.001f*d; co1[a] -= 0.001f*d; - + + struct IsectRayPrecalc isect_precalc; + float ray_direction[3]; + sub_v3_v3v3(ray_direction, co2, co1); + isect_ray_tri_watertight_v3_precalc(&isect_precalc, ray_direction); + /* lets intersect the faces */ for (i=0; i<totface; i++,mface++) { copy_v3_v3(v1, mvert[mface->v1].co); copy_v3_v3(v2, mvert[mface->v2].co); copy_v3_v3(v3, mvert[mface->v3].co); - bool intersects_tri = isect_axial_line_segment_tri_v3(a, co1, co2, v2, v3, v1, &lambda); + bool intersects_tri = isect_ray_tri_watertight_v3(co1, + &isect_precalc, + v1, v2, v3, + &lambda, NULL); if (intersects_tri) { if (from==PART_FROM_FACE) (pa+(int)(lambda*size[a])*a0mul)->flag &= ~PARS_UNEXIST; @@ -231,7 +240,10 @@ static void distribute_grid(DerivedMesh *dm, ParticleSystem *psys) if (mface->v4 && (!intersects_tri || from==PART_FROM_VOLUME)) { copy_v3_v3(v4, mvert[mface->v4].co); - if (isect_axial_line_segment_tri_v3(a, co1, co2, v4, v1, v3, &lambda)) { + if (isect_ray_tri_watertight_v3(co1, + &isect_precalc, + v1, v2, v3, + &lambda, NULL)) { if (from==PART_FROM_FACE) (pa+(int)(lambda*size[a])*a0mul)->flag &= ~PARS_UNEXIST; else |