diff -r e34d6a30b96d -r 75efc3ba5a56 src/invert.cpp
--- a/src/invert.cpp	Mon Apr 10 14:46:36 2023 +0300
+++ b/src/invert.cpp	Tue Apr 11 11:11:28 2023 +0300
@@ -36,7 +36,7 @@
 /*
  * Inverts the winding of a polygon.
  */
-void gl::invert(PolygonElement& polygon)
+void gl::invert(PlainPolygonElement& polygon)
 {
 	visitPolygon<void>(
 		[](LineSegment&) {},