diff -r e34d6a30b96d -r 75efc3ba5a56 src/vertexmap.cpp
--- a/src/vertexmap.cpp	Mon Apr 10 14:46:36 2023 +0300
+++ b/src/vertexmap.cpp	Tue Apr 11 11:11:28 2023 +0300
@@ -22,51 +22,50 @@
 	const glm::vec3& b;
 };
 
-inline void edges(const ModelElement& element, std::function<void(Edge&&)> fn)
+static void edges(const PlainPolygonElement& element, std::function<void(Edge&&)> fn)
 {
 	std::visit<void>(overloaded{
-		[fn](const Colored<LineSegment>& edge) {
+		[fn](const LineSegment& edge) {
 			fn(Edge{edge.p1, edge.p2});
 		},
-		[fn](const Colored<Triangle>& triangle) {
+		[fn](const Triangle& triangle) {
 			fn(Edge{triangle.p1, triangle.p2});
 			fn(Edge{triangle.p2, triangle.p3});
 			fn(Edge{triangle.p3, triangle.p1});
 		},
-		[fn](const Colored<Quadrilateral>& quad) {
+		[fn](const Quadrilateral& quad) {
 			fn(Edge{quad.p1, quad.p2});
 			fn(Edge{quad.p2, quad.p3});
 			fn(Edge{quad.p3, quad.p4});
 			fn(Edge{quad.p4, quad.p1});
 		},
-		[fn](const Colored<ConditionalEdge>& cedge) {
+		[fn](const ConditionalEdge& cedge) {
 			fn(Edge{cedge.p1, cedge.p2});
 		},
-		[](const ModelElement&&){}
 	}, element);
 }
 
 inline void points(
-	const ModelElement& element,
+	const PlainPolygonElement& element,
 	std::function<void(const glm::vec3&)> fn)
 {
 	std::visit<void>(overloaded{
-		[fn](const Colored<LineSegment>& edge) {
+		[fn](const LineSegment& edge) {
 			fn(edge.p1);
 			fn(edge.p2);
 		},
-		[fn](const Colored<Triangle>& triangle) {
+		[fn](const Triangle& triangle) {
 			fn(triangle.p1);
 			fn(triangle.p2);
 			fn(triangle.p3);
 		},
-		[fn](const Colored<Quadrilateral>& quad) {
+		[fn](const Quadrilateral& quad) {
 			fn(quad.p1);
 			fn(quad.p2);
 			fn(quad.p3);
 			fn(quad.p4);
 		},
-		[fn](const Colored<ConditionalEdge>& cedge) {
+		[fn](const ConditionalEdge& cedge) {
 			fn(cedge.p1);
 			fn(cedge.p2);
 			fn(cedge.c1);