Vertex Paint: apply when cursor isn't over faces

This behavior makes more sense for sculpt, less so for painting.
Restores non PBVH behavior, adding `BKE_pbvh_find_nearest_to_ray` -
similar to ray-cast except it finds the closest point on the surface.

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/pbvh_intern.h b/source/blender/blenkernel/intern/pbvh_intern.h
index 7d75930b3c6..e05a3068682 100644
--- a/source/blender/blenkernel/intern/pbvh_intern.h
+++ b/source/blender/blenkernel/intern/pbvh_intern.h
@@ -190,6 +190,16 @@ bool ray_face_intersection_tri(
         const float ray_start[3], const float ray_normal[3],
         const float *t0, const float *t1, const float *t2,
         float *depth);
+
+bool ray_face_nearest_quad(
+        const float ray_start[3], const float ray_normal[3],
+        const float *t0, const float *t1, const float *t2, const float *t3,
+        float *r_depth, float *r_dist_sq);
+bool ray_face_nearest_tri(
+        const float ray_start[3], const float ray_normal[3],
+        const float *t0, const float *t1, const float *t2,
+        float *r_depth, float *r_dist_sq);
+
 void pbvh_update_BB_redraw(PBVH *bvh, PBVHNode **nodes, int totnode, int flag);
 
 /* pbvh_bmesh.c */
@@ -197,6 +207,10 @@ bool pbvh_bmesh_node_raycast(
         PBVHNode *node, const float ray_start[3],
         const float ray_normal[3], float *dist,
         bool use_original);
+bool pbvh_bmesh_node_nearest_to_ray(
+        PBVHNode *node, const float ray_start[3],
+        const float ray_normal[3], float *depth, float *dist_sq,
+        bool use_original);
 
 void pbvh_bmesh_normals_update(PBVHNode **nodes, int totnode);