diff -r 5c0005f63319 -r b7841cd31fb7 src/gl/partrenderer.h
--- a/src/gl/partrenderer.h	Thu Feb 27 11:56:41 2020 +0200
+++ b/src/gl/partrenderer.h	Thu Feb 27 12:23:42 2020 +0200
@@ -38,7 +38,7 @@
 	const ldraw::ColorTable& colorTable;
 	gl::Compiler* const compiler;
 	ldraw::Id highlighted = ldraw::NULL_ID;
-	std::optional<glm::vec3> screenToModelCoordinates(const QPoint& point);
+	std::optional<glm::vec3> screenToModelCoordinates(const QPoint& point, const geom::Plane& plane);
 	QPointF modelToScreenCoordinates(const glm::vec3& point);
 	glm::vec3 unproject(const glm::vec3& win);
 private: