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Fix T78855: Knife tool crashes when the geometry has no face 

I don't see the need for a BVH Tree to have root but not have leafs.
But apparently this case is possible.
This commit is contained in:
Germano Cavalcante 2020-07-12 21:47:50 -03:00
parent f019164f1f
commit 9c9eb03d78
Notes: blender-bot 2023-05-29 09:17:12 +02:00 
Referenced by issue #78855, Knife tool crashes when the geometry has no face
1 changed files with 2 additions and 2 deletions
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source/blender/blenlib/intern/BLI_kdopbvh.c
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@ -1441,13 +1441,13 @@ int *BLI_bvhtree_intersect_plane(BVHTree *tree, float plane[4], uint *r_intersec
int *intersect = NULL;
size_t total = 0;
BVHNode *root = tree->nodes[tree->totleaf];
if (root != NULL) {
if (tree->totleaf) {
BVHIntersectPlaneData data;
data.tree = tree;
copy_v4_v4(data.plane, plane);
data.intersect = BLI_stack_new(sizeof(int), __func__);
BVHNode *root = tree->nodes[tree->totleaf];
bvhtree_intersect_plane_dfs_recursive(&data, root);
total = BLI_stack_count(data.intersect);