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, 12 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_pbvh.h b/source/blender/blenkernel/BKE_pbvh.h
index 08959e79740..c6b9b6a4de6 100644
--- a/source/blender/blenkernel/BKE_pbvh.h
+++ b/source/blender/blenkernel/BKE_pbvh.h
@@ -59,6 +59,8 @@ typedef bool (*BKE_pbvh_SearchCallback)(PBVHNode *node, void *data);
 typedef void (*BKE_pbvh_HitCallback)(PBVHNode *node, void *data);
 typedef void (*BKE_pbvh_HitOccludedCallback)(PBVHNode *node, void *data, float *tmin);
 
+typedef void (*BKE_pbvh_SearchNearestCallback)(PBVHNode *node, void *data, float *tmin);
+
 /* Building */
 
 PBVH *BKE_pbvh_new(void);
@@ -114,6 +116,16 @@ void BKE_pbvh_raycast_project_ray_root(
         PBVH *bvh, bool original,
         float ray_start[3], float ray_end[3], float ray_normal[3]);
 
+void BKE_pbvh_find_nearest_to_ray(
+        PBVH *bvh, BKE_pbvh_HitOccludedCallback cb, void *data,
+        const float ray_start[3], const float ray_normal[3],
+        bool original);
+
+bool BKE_pbvh_node_find_nearest_to_ray(
+        PBVH *bvh, PBVHNode *node, float (*origco)[3], bool use_origco,
+        const float ray_start[3], const float ray_normal[3],
+        float *depth, float *dist_sq);
+
 /* Drawing */
 
 void BKE_pbvh_node_draw(PBVHNode *node, void *data);