Weight Paint: 'Sample' now supports multi-paint

Since the coloring uses sum or average of the weights of all selected
groups, the weight pick tool should also use that instead of reading
the weight of the single active group that you can't see.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_deform.h b/source/blender/blenkernel/BKE_deform.h
index a45893b00fa..e716a7bc8fe 100644
--- a/source/blender/blenkernel/BKE_deform.h
+++ b/source/blender/blenkernel/BKE_deform.h
@@ -68,6 +68,10 @@ void BKE_defvert_array_copy(struct MDeformVert *dst, const struct MDeformVert *s
 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);
 
+float BKE_defvert_multipaint_collective_weight(
+        const struct MDeformVert *dv, int defbase_tot,
+        const bool *defbase_sel, int defbase_tot_sel, bool do_autonormalize);
+
 void defvert_copy(struct MDeformVert *dvert_dst, const struct MDeformVert *dvert_src);
 void defvert_copy_subset(struct MDeformVert *dvert_dst, const struct MDeformVert *dvert_src,
                          const bool *vgroup_subset, const int vgroup_tot);