GPencil: New Brush postprocesing Simplify

This option allows to apply a simplify when the stroke is completed. The simplify use the Adaptive option to keep the shape.

4 files changed, 20 insertions, 1 deletions

diff --git a/release/scripts/startup/bl_ui/space_view3d_toolbar.py b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
index e6cbef16595..3ff7bd83b1f 100644
--- a/release/scripts/startup/bl_ui/space_view3d_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
@@ -1948,6 +1948,9 @@ class VIEW3D_PT_tools_grease_pencil_brush_settings(View3DPanel, Panel):
         col.prop(gp_settings, "random_subdiv", text="Randomness", slider=True)
 
         col = layout.column(align=True)
+        col.prop(gp_settings, "simplify_factor")
+
+        col = layout.column(align=True)
         col.prop(gp_settings, "trim")
 
 
diff --git a/source/blender/editors/gpencil/gpencil_paint.c b/source/blender/editors/gpencil/gpencil_paint.c
index d5c701488c9..0a4b068a926 100644
--- a/source/blender/editors/gpencil/gpencil_paint.c
+++ b/source/blender/editors/gpencil/gpencil_paint.c
@@ -1235,6 +1235,13 @@ static void gp_stroke_newfrombuffer(tGPsdata *p)
         reduce += 0.25f; /* reduce the factor */
       }
     }
+
+    /* Simplify adaptive */
+    if ((brush->gpencil_settings->flag & GP_BRUSH_GROUP_SETTINGS) &&
+        (brush->gpencil_settings->simplify_f > 0.0f)) {
+      BKE_gpencil_simplify_stroke(gps, brush->gpencil_settings->simplify_f);
+    }
+
     /* smooth thickness */
     if ((brush->gpencil_settings->flag & GP_BRUSH_GROUP_SETTINGS) &&
         (brush->gpencil_settings->thick_smoothfac > 0.0f)) {
diff --git a/source/blender/makesdna/DNA_brush_types.h b/source/blender/makesdna/DNA_brush_types.h
index 3aafe5a1ddb..450788dc81d 100644
--- a/source/blender/makesdna/DNA_brush_types.h
+++ b/source/blender/makesdna/DNA_brush_types.h
@@ -113,7 +113,8 @@ typedef struct BrushGpencilSettings {
   float gradient_f;
   /** factor xy of shape for dots gradients */
   float gradient_s[2];
-  char _pad_2[4];
+  /** Simplify adaptive factor */
+  float simplify_f;
 
   struct CurveMapping *curve_sensitivity;
   struct CurveMapping *curve_strength;
diff --git a/source/blender/makesrna/intern/rna_brush.c b/source/blender/makesrna/intern/rna_brush.c
index c3bdbfdd893..d642bcd6203 100644
--- a/source/blender/makesrna/intern/rna_brush.c
+++ b/source/blender/makesrna/intern/rna_brush.c
@@ -1189,6 +1189,14 @@ static void rna_def_gpencil_options(BlenderRNA *brna)
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
 
+  /* Simplify factor */
+  prop = RNA_def_property(srna, "simplify_factor", PROP_FLOAT, PROP_NONE);
+  RNA_def_property_float_sdna(prop, NULL, "simplify_f");
+  RNA_def_property_range(prop, 0, 100.0);
+  RNA_def_property_ui_range(prop, 0, 100.0, 1.0f, 3);
+  RNA_def_property_ui_text(prop, "Simplify", "Factor of Simplify using adaptive algorithm");
+  RNA_def_parameter_clear_flags(prop, PROP_ANIMATABLE, 0);
+
   /* Curves for pressure */
   prop = RNA_def_property(srna, "curve_sensitivity", PROP_POINTER, PROP_NONE);
   RNA_def_property_pointer_sdna(prop, NULL, "curve_sensitivity");