diff -r cef43609a374 -r 0133e565e072 src/vertex.cpp
--- a/src/vertex.cpp	Sat Dec 14 23:00:01 2019 +0200
+++ b/src/vertex.cpp	Wed Jan 01 17:45:56 2020 +0200
@@ -157,20 +157,23 @@
 }
 
 /*
- * Transforms this vertex with a tranformation matrix and returns the result.
+ * Transforms the specified vertex with a transformation matrix
  */
-Point3D math::transform(const Point3D point, const GLRotationMatrix& matrix)
+Point3D math::transform(const Point3D& point, const Matrix4x4& matrix)
 {
 	return {
 		matrix(0, 0) * point.x
 			+ matrix(0, 1) * point.y
-			+ matrix(0, 2) * point.z,
+			+ matrix(0, 2) * point.z
+			+ matrix(0, 3),
 		matrix(1, 0) * point.x
 			+ matrix(1, 1) * point.y
-			+ matrix(1, 2) * point.z,
+			+ matrix(1, 2) * point.z
+			+ matrix(1, 3),
 		matrix(2, 0) * point.x
 			+ matrix(2, 1) * point.y
-			+ matrix(2, 2) * point.z,
+			+ matrix(2, 2) * point.z
+			+ matrix(2, 3),
 	};
 }