wavefront obj export

src/c3nav/mapdata/render/engines/svg.py

@@ -83,7 +83,7 @@ class SVGEngine(RenderEngine):
         result += '</svg>'
         return result
 
-    def render(self):
+    def render(self, filename=None):
         # render the image to png. returns bytes if f is None, otherwise it calls f.write()
 
         if self.width == 256 and self.height == 256 and not self.g: