Add MVertSkin DNA/RNA and customdata (CD_MVERT_SKIN).

The MVertSkin currently just stores local skin radii and skin
flags (MVertSkinFlag).

Skin modifier documentation:
http://wiki.blender.org/index.php/User:Nicholasbishop/SkinModifier

Reviewed by Campbell Barton.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_meshdata_types.h b/source/blender/makesdna/DNA_meshdata_types.h
index c3b0bc39388..0bd83e73271 100644
--- a/source/blender/makesdna/DNA_meshdata_types.h
+++ b/source/blender/makesdna/DNA_meshdata_types.h
@@ -257,6 +257,27 @@ typedef struct GridPaintMask {
 	int pad;
 } GridPaintMask;
 
+typedef enum MVertSkinFlag {
+	/* Marks a vertex as the edge-graph root, used for calculating
+	   rotations for all connected edges (recursively.) Also used to
+	   choose a root when generating an armature. */
+	MVERT_SKIN_ROOT = 1,
+
+	/* Marks a branch vertex (vertex with more than two connected
+	   edges) so that it's neighbors are directly hulled together,
+	   rather than the default of generating intermediate frames. */
+	MVERT_SKIN_LOOSE = 2
+} MVertSkinFlag;
+
+typedef struct MVertSkin {
+	/* Radii of the skin, define how big the generated frames
+	   are. Currently only the first two elements are used. */
+	float radius[3];
+
+	/* MVertSkinFlag */
+	int flag;
+} MVertSkin;
+
 /* mvert->flag (1=SELECT) */
 #define ME_SPHERETEST		2
 #define ME_VERT_TMP_TAG		4