diff options
Diffstat (limited to 'source/blender/blenkernel/intern/pbvh.c')
| -rw-r--r-- | source/blender/blenkernel/intern/pbvh.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/source/blender/blenkernel/intern/pbvh.c b/source/blender/blenkernel/intern/pbvh.c index f72ecd568e2..b65089c7599 100644 --- a/source/blender/blenkernel/intern/pbvh.c +++ b/source/blender/blenkernel/intern/pbvh.c @@ -2155,7 +2155,11 @@ static bool pbvh_faces_node_raycast(PBVH *bvh, float location[3] = {0.0f}; madd_v3_v3v3fl(location, ray_start, ray_normal, *depth); for (int j = 0; j < 3; j++) { - if (len_squared_v3v3(location, co[j]) < len_squared_v3v3(location, nearest_vertex_co)) { + /* Always assign nearest_vertex_co in the first iteration to avoid comparison against + * uninitialized values. This stores the closest vertex in the current intersecting + * triangle. */ + if (j == 0 || + len_squared_v3v3(location, co[j]) < len_squared_v3v3(location, nearest_vertex_co)) { copy_v3_v3(nearest_vertex_co, co[j]); *r_active_vertex_index = mloop[lt->tri[j]].v; *r_active_face_index = lt->poly; @@ -2235,8 +2239,11 @@ static bool pbvh_grids_node_raycast(PBVH *bvh, const int y_it[4] = {0, 0, 1, 1}; for (int j = 0; j < 4; j++) { - if (len_squared_v3v3(location, co[j]) < - len_squared_v3v3(location, nearest_vertex_co)) { + /* Always assign nearest_vertex_co in the first iteration to avoid comparison against + * uninitialized values. This stores the closest vertex in the current intersecting + * quad. */ + if (j == 0 || len_squared_v3v3(location, co[j]) < + len_squared_v3v3(location, nearest_vertex_co)) { copy_v3_v3(nearest_vertex_co, co[j]); *r_active_vertex_index = gridkey->grid_area * grid_index + |