New class for generating SVG from XS. Includes some minor refactoring to TriangleMesh

xs/src/SVG.hpp

@@ -0,0 +1,21 @@
+#ifndef slic3r_SVG_hpp_
+#define slic3r_SVG_hpp_
+
+#include <myinit.h>
+#include "Line.hpp"
+
+namespace Slic3r {
+
+class SVG
+{
+    private:
+    FILE* f;
+    public:
+    SVG(const char* filename);
+    void AddLine(const Line &line);
+    void Close();
+};
+
+}
+
+#endif