vertex group changes,

use more api functions more (some vertex group editing functions were copied about), also make some functions int oapi calls.

- remove defgroup_find_index(), use BLI_findlink instead since they both work the same way.
- move static function getNearestPointOnPlane() to BLI_math api function closest_to_plane_v3()
- ED_vgroup_give_parray() added option to return an array where unselected verts are NULL (simplifies code & works for lattice when it didn't before).
- more consistant error checking of ob->actdef.

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/blenlib/BLI_math_geom.h b/source/blender/blenlib/BLI_math_geom.h
index d494d63f56b..27da6c1025d 100644
--- a/source/blender/blenlib/BLI_math_geom.h
+++ b/source/blender/blenlib/BLI_math_geom.h
@@ -65,7 +65,9 @@ float dist_to_plane_v3(const float p[3], const float plane_co[3], const float pl
 float dist_to_line_segment_v3(const float p[3], const float l1[3], const float l2[3]);
 float closest_to_line_v3(float r[3], const float p[3], const float l1[3], const float l2[3]);
 float closest_to_line_v2(float r[2], const float p[2], const float l1[2], const float l2[2]);
-void closest_to_line_segment_v3(float r[3], const float p[3], const float l1[3], const float l2[3]);
+void  closest_to_line_segment_v3(float r[3], const float p[3], const float l1[3], const float l2[3]);
+void  closest_to_plane_v3(float r[3], const float plane_co[3], const float plane_no_unit[3], const float pt[3]);
+
 
 float line_point_factor_v3(const float p[3], const float l1[3], const float l2[3]);
 float line_point_factor_v2(const float p[2], const float l1[2], const float l2[2]);