transform_snap_object: Add a small offset to the clip plane

This prioritizes the vertex and edge snap over raycast.
Referenced by issue #56577, Crash when using Grease Pencil Fill Brush
2018-08-27 16:00:20 -03:00 · 2018-08-27 16:00:20 -03:00 · 0bdabaa3f6 · 2023-02-14 06:37:09 +01:00
parent 4b89bf88c7
commit 0bdabaa3f6
1 changed files with 3 additions and 0 deletions
--- a/source/blender/editors/transform/transform_snap_object.c
+++ b/source/blender/editors/transform/transform_snap_object.c
@ -2655,6 +2655,9 @@ static short transform_snap_context_project_view3d_mixed_impl(
 				negate_v4(new_clipplane);
 			}

+			/* Small offset to simulate a kind of volume for edges and vertices. */
+			new_clipplane[3] += 0.01f;
+
 			/* Try to snap only to the polygon. */
 			elem = snap_mesh_polygon(
 			        sctx, &snapdata, ob, obmat,