diff -r 6ca6e8c647d4 -r 128efb9d148b src/geometry.h
--- a/src/geometry.h	Mon Jul 19 23:41:52 2021 +0300
+++ b/src/geometry.h	Tue Jul 20 01:22:01 2021 +0300
@@ -102,4 +102,11 @@
 	{
 		std::vector<glm::vec3> points;
 	};
+
+	inline bool isclose(const glm::vec3& a, const glm::vec3& b)
+	{
+		return qFuzzyCompare(a.x, b.x)
+			and qFuzzyCompare(a.y, b.y)
+			and qFuzzyCompare(a.z, b.z);
+	}
 }