diff -r 01537fbe096e -r 8d88adffb779 src/model.h
--- a/src/model.h	Tue Apr 11 22:51:47 2023 +0300
+++ b/src/model.h	Wed Apr 12 01:53:42 2023 +0300
@@ -62,25 +62,27 @@
 	return p.segments * q.divisions < q.segments / p.divisions;
 }
 
-struct CircularPrimitive
+enum class circular_primitive_type_e
 {
-	enum Type
-	{
-		Circle,
-		Disc,
-		Cylinder,
-		CylinderOpen,
-		CylinderClosed,
-		DiscNegative,
-		Chord,
-	} type;
-	static constexpr int NUM_TYPES = Chord + 1;
+	circle,
+	disc,
+	cylinder,
+	cylinder_open,
+	cylinder_closed,
+	disc_negative,
+	chord,
+};
+
+struct circular_primitive
+{
+	static constexpr int NUM_TYPES = static_cast<int>(circular_primitive_type_e::chord) + 1;
+	circular_primitive_type_e type;
 	CircularFraction fraction;
 	glm::mat4 transformation;
 	bool inverted = false;
 };
 
-constexpr char circularPrimitiveStems[CircularPrimitive::NUM_TYPES][5] = {
+constexpr char circularPrimitiveStems[circular_primitive::NUM_TYPES][5] = {
 	"edge",
 	"disc",
 	"cyli",
@@ -90,12 +92,12 @@
 	"chrd",
 };
 
-Q_DECLARE_METATYPE(CircularPrimitive::Type)
+Q_DECLARE_METATYPE(circular_primitive_type_e)
 
 struct CircleToolOptions
 {
 	CircularFraction fraction;
-	CircularPrimitive::Type type;
+	circular_primitive_type_e type;
 };
 
 using ModelElement = std::variant<
@@ -104,7 +106,7 @@
 	Colored<Triangle>,
 	Colored<Quadrilateral>,
 	Colored<ConditionalEdge>,
-	Colored<CircularPrimitive>,
+	Colored<circular_primitive>,
 	Comment,
 	Empty,
 	ParseError>;