diff -r d28f6ff1b1f0 -r 1e345ed80a1d src/primitives.h
--- a/src/primitives.h	Sat Mar 24 23:46:25 2018 +0200
+++ b/src/primitives.h	Sun Mar 25 16:28:03 2018 +0300
@@ -40,6 +40,8 @@
 
 struct PrimitiveModel
 {
+	enum FilenameStyle { NewStyleName, LegacyStyleName };
+
 	enum Type
 	{
 		Circle,
@@ -56,7 +58,7 @@
 	QString typeName() const;
 	void generateBody(Model& model) const;
 	static QString typeName(Type type);
-	QString makeFileName() const;
+	QString makeFileName(FilenameStyle style) const;
 };
 
 class PrimitiveCategory : public QObject