Sculpt: Add extra deform types to Smear

The smear brush was using the stroke direction to slide colors across
the mesh surface (this is called drag in other sculpt tools). Similarly,
other deformations can be included. The most common ones in image
editing are pinch and expand, which can be used to sharpen transitions
between colors.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8270

1 files changed, 10 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_brush_types.h b/source/blender/makesdna/DNA_brush_types.h
index 4056faf359f..0ad249ef2cd 100644
--- a/source/blender/makesdna/DNA_brush_types.h
+++ b/source/blender/makesdna/DNA_brush_types.h
@@ -343,6 +343,12 @@ typedef enum eBrushPoseOriginType {
   BRUSH_POSE_ORIGIN_FACE_SETS_FK = 2,
 } eBrushPoseOriginType;
 
+typedef enum eBrushSmearDeformType {
+  BRUSH_SMEAR_DEFORM_DRAG = 0,
+  BRUSH_SMEAR_DEFORM_PINCH = 1,
+  BRUSH_SMEAR_DEFORM_EXPAND = 2,
+} eBrushSmearDeformType;
+
 /* Gpencilsettings.Vertex_mode */
 typedef enum eGp_Vertex_Mode {
   /* Affect to Stroke only. */
@@ -500,7 +506,7 @@ typedef struct Brush {
   char gpencil_sculpt_tool;
   /** Active grease pencil weight tool. */
   char gpencil_weight_tool;
-  char _pad1[2];
+  char _pad1[6];
 
   float autosmooth_factor;
 
@@ -555,6 +561,9 @@ typedef struct Brush {
   /* multiplane scrape */
   float multiplane_scrape_angle;
 
+  /* smear */
+  int smear_deform_type;
+
   /* overlay */
   int texture_overlay_alpha;
   int mask_overlay_alpha;