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Fix T102336: dynamic topology crash 

Ensure there is always an active vertex when a face is hit.

Differential Revision: https://developer.blender.org/D16705
This commit is contained in:
Joseph Eagar 2022-12-06 18:02:56 +01:00 committed by Brecht Van Lommel
parent 87582d95df
commit 31ccf79011
Notes: blender-bot 2023-02-14 00:37:17 +01:00 
Referenced by issue #102336, Regression: Enabling Dynamic Topology Causes Crash on Plane Mesh
1 changed files with 4 additions and 4 deletions
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8
source/blender/blenkernel/intern/pbvh_bmesh.c
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@ -1527,8 +1527,8 @@ bool pbvh_bmesh_node_raycast(PBVHNode *node,
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, cos[j]) <
len_squared_v3v3(location, nearest_vertex_co)) {
if (j == 0 || len_squared_v3v3(location, cos[j]) <
len_squared_v3v3(location, nearest_vertex_co)) {
copy_v3_v3(nearest_vertex_co, cos[j]);
r_active_vertex->i = (intptr_t)node->bm_orvert[node->bm_ortri[i][j]];
}
@ -1559,8 +1559,8 @@ bool pbvh_bmesh_node_raycast(PBVHNode *node,
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, v_tri[j]->co) <
len_squared_v3v3(location, nearest_vertex_co)) {
if (j == 0 || len_squared_v3v3(location, v_tri[j]->co) <
len_squared_v3v3(location, nearest_vertex_co)) {
copy_v3_v3(nearest_vertex_co, v_tri[j]->co);
r_active_vertex->i = (intptr_t)v_tri[j];
}