GPencil: New Simplify modifier mode Sample and operator

This mode simplify the stroke doing a resampling of the points and generate new geometry at the distance defined.

Sample function developed by @NicksBest

New Resample Stroke operator

This operator recreates the stroke geometry with a predefined length between points.

The operator uses the same code used in Simplify modifier.

Reviewers: @mendio

1 files changed, 4 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_gpencil_modifier_types.h b/source/blender/makesdna/DNA_gpencil_modifier_types.h
index 47347753f42..3acd7d6de12 100644
--- a/source/blender/makesdna/DNA_gpencil_modifier_types.h
+++ b/source/blender/makesdna/DNA_gpencil_modifier_types.h
@@ -502,7 +502,8 @@ typedef struct SimplifyGpencilModifierData {
   short step;
   /** Custom index for passes. */
   int layer_pass;
-  char _pad[4];
+  /* Sample length */
+  float length;
 } SimplifyGpencilModifierData;
 
 typedef enum eSimplifyGpencil_Flag {
@@ -516,6 +517,8 @@ typedef enum eSimplifyGpencil_Mode {
   GP_SIMPLIFY_FIXED = 0,
   /* Use RDP algorithm */
   GP_SIMPLIFY_ADAPTIVE = 1,
+  /* Sample the stroke using a fixed length */
+  GP_SIMPLIFY_SAMPLE = 2,
 } eSimplifyGpencil_Mode;
 
 typedef struct OffsetGpencilModifierData {