diff -r 40e2940605a3 -r 4bec0525ef1b src/linetypes/triangle.cpp
--- a/src/linetypes/triangle.cpp	Wed Mar 18 17:11:23 2020 +0200
+++ b/src/linetypes/triangle.cpp	Thu Mar 19 21:06:06 2020 +0200
@@ -26,34 +26,23 @@
 {
 	switch (id)
 	{
+	case Property::Point0:
+		return QVariant::fromValue(points[0]);
 	case Property::Point1:
-		return QVariant::fromValue(points[0]);
+		return QVariant::fromValue(points[1]);
 	case Property::Point2:
-		return QVariant::fromValue(points[1]);
-	case Property::Point3:
 		return QVariant::fromValue(points[2]);
 	default:
 		return ColoredObject::getProperty(id);
 	}
 }
 
-auto ldraw::Triangle::setProperty(Property id, const QVariant& value)
-	-> SetPropertyResult
+void ldraw::Triangle::setProperty(SetPropertyResult* result, const PropertyKeyValue& pair)
 {
-	switch (id)
-	{
-	case Property::Point1:
-		points[0] = value.value<glm::vec3>();
-		return SetPropertyResult::Success;
-	case Property::Point2:
-		points[1] = value.value<glm::vec3>();
-		return SetPropertyResult::Success;
-	case Property::Point3:
-		points[2] = value.value<glm::vec3>();
-		return SetPropertyResult::Success;
-	default:
-		return ColoredObject::setProperty(id, value);
-	}
+	LDRAW_OBJECT_HANDLE_SET_PROPERTY(Point0, {points[0] = value;})
+	LDRAW_OBJECT_HANDLE_SET_PROPERTY(Point1, {points[1] = value;})
+	LDRAW_OBJECT_HANDLE_SET_PROPERTY(Point2, {points[2] = value;})
+	ColoredObject::setProperty(result, pair);
 }
 
 QString ldraw::Triangle::textRepresentation() const