diff -r 1de2b8d64e9f -r 98906a94732f src/linetypes/quadrilateral.cpp
--- a/src/linetypes/quadrilateral.cpp	Tue Jan 28 23:34:49 2020 +0200
+++ b/src/linetypes/quadrilateral.cpp	Thu Jan 30 19:20:11 2020 +0200
@@ -1,6 +1,6 @@
 #include "quadrilateral.h"
 
-linetypes::Quadrilateral::Quadrilateral(
+ldraw::Quadrilateral::Quadrilateral(
 	const glm::vec3& point_1,
 	const glm::vec3& point_2,
 	const glm::vec3& point_3,
@@ -11,13 +11,13 @@
 {
 }
 
-linetypes::Quadrilateral::Quadrilateral(const QVector<glm::vec3>& vertices, const Color color) :
+ldraw::Quadrilateral::Quadrilateral(const QVector<glm::vec3>& vertices, const Color color) :
 	ColoredObject{color},
 	points{vertices[0], vertices[1], vertices[2], vertices[3]}
 {
 }
 
-QVariant linetypes::Quadrilateral::getProperty(const Property id) const
+QVariant ldraw::Quadrilateral::getProperty(const Property id) const
 {
 	switch (id)
 	{
@@ -34,7 +34,7 @@
 	}
 }
 
-auto linetypes::Quadrilateral::setProperty(
+auto ldraw::Quadrilateral::setProperty(
 	const Property id,
 	const QVariant& value)
 	-> SetPropertyResult
@@ -58,7 +58,7 @@
 	}
 }
 
-QString linetypes::Quadrilateral::textRepresentation() const
+QString ldraw::Quadrilateral::textRepresentation() const
 {
 	return utility::format("%1 %2 %3 %4",
 		utility::vertexToStringParens(points[0]),
@@ -67,7 +67,7 @@
 		utility::vertexToStringParens(points[3]));
 }
 
-void linetypes::Quadrilateral::getPolygons(
+void ldraw::Quadrilateral::getPolygons(
 	std::vector<gl::Polygon>& polygons,
 	GetPolygonsContext* context) const
 {
@@ -81,7 +81,7 @@
 			this->id));
 }
 
-void linetypes::Quadrilateral::invert()
+void ldraw::Quadrilateral::invert()
 {
 	//    0 1 2 3
 	// -> 2 1 0 3