GP: Fix precision issue with Circle and Arc tools

Differential Revision: https://developer.blender.org/D4030

1 files changed, 13 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_gpencil.h b/source/blender/editors/include/ED_gpencil.h
index 850969cce96..b23f5afef52 100644
--- a/source/blender/editors/include/ED_gpencil.h
+++ b/source/blender/editors/include/ED_gpencil.h
@@ -81,6 +81,19 @@ typedef struct tGPspoint {
 	float uv_rot;           /* uv rotation for dor mode */
 } tGPspoint;
 
+/* Temporary 'Stroke Point' data (2D / screen-space)
+ *
+ * Used for primitives. See: D4030 
+ */
+typedef struct tPGPspoint {
+	float x, y;             /* x and y coordinates of cursor (in relative to area) */
+	float pressure;         /* pressure of tablet at this point */
+	float strength;         /* pressure of tablet at this point for alpha factor */
+	float time;             /* Time relative to stroke start (used when converting to path) */
+	float uv_fac;           /* factor of uv along the stroke */
+	float uv_rot;           /* uv rotation for dor mode */
+} tPGPspoint;
+
 /* used to sort by zdepth gpencil objects in viewport */
 /* TODO: this could be a system parameter in userprefs screen */
 #define GP_CACHE_BLOCK_SIZE 16