diff -r cef43609a374 -r 0133e565e072 src/invert.h
--- a/src/invert.h	Sat Dec 14 23:00:01 2019 +0200
+++ b/src/invert.h	Wed Jan 01 17:45:56 2020 +0200
@@ -22,6 +22,14 @@
 #include "gl/common.h"
 
 bool isflat(class Model* model, Axis* axis);
-QMatrix4x4 flipmatrix(Axis dimension);
+
+namespace math
+{
+	Matrix4x4 flipmatrix(Axis dimension);
+}
 //void invert(LDObject* obj, class DocumentManager* context);
-void invertPolygon(gl::Polygon& polygon);
+
+namespace gl
+{
+	void invert(gl::Polygon& polygon);
+}