diff -r 000781318c36 -r b54b350dff5d src/tools/drawtool.h
--- a/src/tools/drawtool.h	Fri Jul 30 01:28:39 2021 +0300
+++ b/src/tools/drawtool.h	Fri Aug 27 00:55:32 2021 +0300
@@ -19,5 +19,6 @@
 	std::vector<glm::vec3> polygon;
 	std::vector<glm::vec3> previewPolygon;
 	glm::vec3 previewPoint;
+	bool isconcave = false;
 	void updatePreviewPolygon();
 };