Grease Pencil: Drawing Improvements

* Smooth strokes can now be drawn again, with normal (i.e. reasonably speedy feedback again). 
Previously slow drawing was caused by a bad notifier being used - the full screen was redrawn each time instead of just the relevant region. Now, only the relevant region is redrawn while drawing, and a proper flush is done for the rest of the screen at the end.

* Made drawing straight lines a proper drawing 'mode' for Grease Pencil now. Use the Ctrl-D-LMB hotkey to draw straight lines in this way. The (buffer) line drawn now will accurately represent the final straight line instead of drawing the freehand path taken as before.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/editors/gpencil/gpencil_intern.h b/source/blender/editors/gpencil/gpencil_intern.h
index cc98d491f7a..2c7bf9156c3 100644
--- a/source/blender/editors/gpencil/gpencil_intern.h
+++ b/source/blender/editors/gpencil/gpencil_intern.h
@@ -40,6 +40,13 @@ struct wmOperatorType;
 
 void GPENCIL_OT_draw(struct wmOperatorType *ot);
 
+/* Paint Modes for operator*/
+typedef enum eGPencil_PaintModes {
+	GP_PAINTMODE_DRAW = 0,
+	GP_PAINTMODE_ERASER,
+	GP_PAINTMODE_DRAW_STRAIGHT,
+} eGPencil_PaintModes;
+
 /* buttons editing --- */
 
 void GPENCIL_OT_data_add(struct wmOperatorType *ot);