fix [#35453] "copy mirrored uv coords" doesn't work

- made precision configurable.
- report a warning when doubles are found since they cause problems.

added Polygon.center attribute to avoid calculating in python.

1 files changed, 14 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_mesh.c b/source/blender/makesrna/intern/rna_mesh.c
index 7e54f665214..85a669adcc0 100644
--- a/source/blender/makesrna/intern/rna_mesh.c
+++ b/source/blender/makesrna/intern/rna_mesh.c
@@ -326,10 +326,17 @@ static void rna_MeshPolygon_normal_get(PointerRNA *ptr, float *values)
 	Mesh *me = rna_mesh(ptr);
 	MPoly *mp = (MPoly *)ptr->data;
 
-	/* BMESH_TODO: might be faster to look for a CD_NORMALS layer and use that */
 	BKE_mesh_calc_poly_normal(mp, me->mloop + mp->loopstart, me->mvert, values);
 }
 
+static void rna_MeshPolygon_center_get(PointerRNA *ptr, float *values)
+{
+	Mesh *me = rna_mesh(ptr);
+	MPoly *mp = (MPoly *)ptr->data;
+
+	BKE_mesh_calc_poly_center(mp, me->mloop + mp->loopstart, me->mvert, values);
+}
+
 static float rna_MeshPolygon_area_get(PointerRNA *ptr)
 {
 	Mesh *me = (Mesh *)ptr->id.data;
@@ -1880,6 +1887,12 @@ static void rna_def_mpolygon(BlenderRNA *brna)
 	RNA_def_property_float_funcs(prop, "rna_MeshPolygon_normal_get", NULL, NULL);
 	RNA_def_property_ui_text(prop, "Face normal", "Local space unit length normal vector for this polygon");
 
+	prop = RNA_def_property(srna, "center", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_float_funcs(prop, "rna_MeshPolygon_center_get", NULL, NULL);
+	RNA_def_property_ui_text(prop, "Face center", "Center of the polygon");
+
 	prop = RNA_def_property(srna, "area", PROP_FLOAT, PROP_UNSIGNED);
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_float_funcs(prop, "rna_MeshPolygon_area_get", NULL, NULL);