GPencil: Add Sample parameter to Convert curve

This allows to resample the stroke to avoid too dense geometry.

source/blender/makesrna/intern/rna_object_api.c

@@ -715,7 +715,8 @@ bool rna_Object_generate_gpencil_strokes(Object *ob,
                                          Object *ob_gpencil,
                                          bool gpencil_lines,
                                          bool use_collections,
-                                         float scale_thickness)
+                                         float scale_thickness,
+                                         float sample)
 {
   if (ob->type != OB_CURVE) {
     BKE_reportf(reports,
@@ -727,8 +728,15 @@ bool rna_Object_generate_gpencil_strokes(Object *ob,
   Main *bmain = CTX_data_main(C);
   Scene *scene = CTX_data_scene(C);
 
-  BKE_gpencil_convert_curve(
-      bmain, scene, ob_gpencil, ob, gpencil_lines, use_collections, false, scale_thickness);
+  BKE_gpencil_convert_curve(bmain,
+                            scene,
+                            ob_gpencil,
+                            ob,
+                            gpencil_lines,
+                            use_collections,
+                            false,
+                            scale_thickness,
+                            sample);
 
   WM_main_add_notifier(NC_GPENCIL | ND_DATA, NULL);
 
@@ -1202,6 +1210,8 @@ void RNA_api_object(StructRNA *srna)
   parm = RNA_def_boolean(func, "use_collections", true, "", "Use Collections");
   parm = RNA_def_float(
       func, "scale_thickness", 1.0f, 0.0f, FLT_MAX, "", "Thickness scaling factor", 0.0f, 100.0f);
+  parm = RNA_def_float(
+      func, "sample", 0.0f, 0.0f, FLT_MAX, "", "Sample distance, zero to disable", 0.0f, 100.0f);
   parm = RNA_def_boolean(func, "result", 0, "", "Result");
   RNA_def_function_return(func, parm);
 }