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authorSybren A. Stüvel <sybren@blender.org>2021-08-03 14:43:24 +0300
committerSybren A. Stüvel <sybren@blender.org>2021-08-03 14:43:42 +0300
commit0342fb5d20cd13b495a7511ccfdfc3044d83cb04 (patch)
treeb1ee5f64b75c5f071999496daa7e2e4819627d2c /source/blender/blenkernel/intern/armature.c
parentdbd34a5acb3d0be2bdbad54a427153de49e47f8e (diff)
Fix T90387: division by zero when trying to invert scale
Fix division by zero when `BKE_bone_parent_transform_invert()` inverts a scale vector with zero components. Zero values in the to-be-inverted vector are now simply skipped, i.e. remain zero after inversion. This at least ensures that `invert_v3_safe(invert_v3_safe(vector))` results in the same vector. This commit does NOT fix the conceptual problem that an inversion of a potentially non-invertible vector is relied upon. It just avoids the division by zero.
Diffstat (limited to 'source/blender/blenkernel/intern/armature.c')
-rw-r--r--source/blender/blenkernel/intern/armature.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/armature.c b/source/blender/blenkernel/intern/armature.c
index 434d696f9bd..1f02b084534 100644
--- a/source/blender/blenkernel/intern/armature.c
+++ b/source/blender/blenkernel/intern/armature.c
@@ -1882,7 +1882,7 @@ void BKE_bone_parent_transform_invert(struct BoneParentTransform *bpt)
{
invert_m4(bpt->rotscale_mat);
invert_m4(bpt->loc_mat);
- invert_v3(bpt->post_scale);
+ invert_v3_safe(bpt->post_scale);
}
void BKE_bone_parent_transform_combine(const struct BoneParentTransform *in1,