Sculpt: Pose Brush Face Sets origin mode

This commit introduces a new mode for calculating the positions and
weights of the IK segments in the Pose Brush based on the Face Sets.

The first segment of the chain will always include all face sets inside
the brush radius and it will propagate until the boundary of the last
face sets added in the flood fill. Then consecutive connected face sets
are added to the chain until the chain length limit is reached or all
face sets of the mesh are already part of the chain.

This feature enables complete control over the pose brush origins in
case that is needed. Also, with this mode, the user can have a library
of base meshes with face sets already configured to get to the initial
pose as fast as possible.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D7235

1 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/editors/sculpt_paint/sculpt_intern.h b/source/blender/editors/sculpt_paint/sculpt_intern.h
index 7f93355e269..fe56283dbcb 100644
--- a/source/blender/editors/sculpt_paint/sculpt_intern.h
+++ b/source/blender/editors/sculpt_paint/sculpt_intern.h
@@ -125,6 +125,9 @@ void SCULPT_vertex_neighbors_get(struct SculptSession *ss,
   } \
   ((void)0)
 
+int SCULPT_active_vertex_get(SculptSession *ss);
+const float *SCULPT_active_vertex_co_get(SculptSession *ss);
+
 /* Sculpt Original Data */
 typedef struct {
   struct BMLog *bm_log;
@@ -143,6 +146,11 @@ typedef struct {
 void SCULPT_orig_vert_data_init(SculptOrigVertData *data, Object *ob, PBVHNode *node);
 void SCULPT_orig_vert_data_update(SculptOrigVertData *orig_data, PBVHVertexIter *iter);
 
+/* Face Sets */
+int SCULPT_vertex_face_set_get(SculptSession *ss, int index);
+bool SCULPT_vertex_has_face_set(SculptSession *ss, int index, int face_set);
+bool SCULPT_vertex_has_unique_face_set(SculptSession *ss, int index);
+
 /* Dynamic topology */
 void sculpt_pbvh_clear(Object *ob);
 void sculpt_dyntopo_node_layers_add(struct SculptSession *ss);
@@ -196,6 +204,13 @@ void SCULPT_floodfill_add_active(struct Sculpt *sd,
                                  struct SculptSession *ss,
                                  SculptFloodFill *flood,
                                  float radius);
+void SCULPT_floodfill_add_initial_with_symmetry(struct Sculpt *sd,
+                                                struct Object *ob,
+                                                struct SculptSession *ss,
+                                                SculptFloodFill *flood,
+                                                int index,
+                                                float radius);
+void sculpt_floodfill_add_initial(SculptFloodFill *flood, int index);
 void SCULPT_floodfill_execute(
     struct SculptSession *ss,
     SculptFloodFill *flood,