Vertex/Weight Paint: Use PBVH for painting

2016 GSOC project by @nathanvollmer, see D2150

- Mirrored painting and radial symmetry, like in sculpt mode.
- Volume based splash prevention,
  which avoids painting vertices far away from the 3D brush location.
- Normal based splash prevention,
  which avoids painting vertices with normals opposite the normal
  at the 3D brush location.
- Blur mode now uses a nearest neighbor average.
- Average mode, which averages the color/weight
  of the vertices within the brush
- Smudge mode, which pulls the colors/weights
  along the direction of the brush
- RGB^2 color blending, which gives a more accurate
  blend between two colors
- multithreading support. (PBVH leaves are painted in parallel.)
- Foreground/background color picker in vertex paint

1 files changed, 0 insertions, 12 deletions

diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index 5b809386267..c0dcac33656 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -217,16 +217,10 @@ void BKE_scene_copy_data(Main *bmain, Scene *sce_dst, const Scene *sce_src, cons
 		ToolSettings *ts = sce_dst->toolsettings = MEM_dupallocN(sce_dst->toolsettings);
 		if (ts->vpaint) {
 			ts->vpaint = MEM_dupallocN(ts->vpaint);
-			ts->vpaint->paintcursor = NULL;
-			ts->vpaint->vpaint_prev = NULL;
-			ts->vpaint->wpaint_prev = NULL;
 			BKE_paint_copy(&ts->vpaint->paint, &ts->vpaint->paint, flag_subdata);
 		}
 		if (ts->wpaint) {
 			ts->wpaint = MEM_dupallocN(ts->wpaint);
-			ts->wpaint->paintcursor = NULL;
-			ts->wpaint->vpaint_prev = NULL;
-			ts->wpaint->wpaint_prev = NULL;
 			BKE_paint_copy(&ts->wpaint->paint, &ts->wpaint->paint, flag_subdata);
 		}
 		if (ts->sculpt) {
@@ -335,16 +329,10 @@ Scene *BKE_scene_copy(Main *bmain, Scene *sce, int type)
 		if (ts) {
 			if (ts->vpaint) {
 				ts->vpaint = MEM_dupallocN(ts->vpaint);
-				ts->vpaint->paintcursor = NULL;
-				ts->vpaint->vpaint_prev = NULL;
-				ts->vpaint->wpaint_prev = NULL;
 				BKE_paint_copy(&ts->vpaint->paint, &ts->vpaint->paint, 0);
 			}
 			if (ts->wpaint) {
 				ts->wpaint = MEM_dupallocN(ts->wpaint);
-				ts->wpaint->paintcursor = NULL;
-				ts->wpaint->vpaint_prev = NULL;
-				ts->wpaint->wpaint_prev = NULL;
 				BKE_paint_copy(&ts->wpaint->paint, &ts->wpaint->paint, 0);
 			}
 			if (ts->sculpt) {