diff options
| -rw-r--r-- | source/blender/blenkernel/intern/deform.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/deform.c b/source/blender/blenkernel/intern/deform.c index 69baaf5e58a..eec8d2478da 100644 --- a/source/blender/blenkernel/intern/deform.c +++ b/source/blender/blenkernel/intern/deform.c @@ -621,8 +621,17 @@ float defvert_find_weight(const struct MDeformVert *dvert, const int defgroup) */ float defvert_array_find_weight_safe(const struct MDeformVert *dvert, const int index, const int defgroup) { - if (defgroup == -1 || dvert == NULL) + /* Invalid defgroup index means the vgroup selected is invalid, does not exist, in that case it is OK to return 1.0 + * (i.e. maximum weight, as if no vgroup was selected). + * But in case of valid defgroup and NULL dvert data pointer, it means that vgroup **is** valid, + * and just totally empty, so we shall return '0.0' value then! + */ + if (defgroup == -1) { return 1.0f; + } + else if (dvert == NULL) { + return 0.0f; + } return defvert_find_weight(dvert + index, defgroup); } |