make RendererAgg.draw_path_collection as a wrapper function

svn path=/trunk/matplotlib/; revision=8849
matplotlib · scottza · Jul 6, 2010 · Jul 6, 2010 · Jul 6, 2010 · Jul 6, 2010
commit d41e076704180ee9c4944d4b9e6b6a2c89526779
diff --git a/lib/matplotlib/backends/backend_agg.py b/lib/matplotlib/backends/backend_agg.py
@@ -75,15 +75,18 @@ def _get_hinting_flag(self):
         else:
             return LOAD_NO_HINTING
 
+    # for filtering to work with rasterization, methods needs to be wrapped.
+    # maybe there is better way to do it.
     def draw_markers(self, *kl, **kw):
-        # for filtering to work with rastrization, methods needs to be wrapped.
-        # maybe there is better way to do it.
         return self._renderer.draw_markers(*kl, **kw)
 
+    def draw_path_collection(self, *kl, **kw):
+        return self._renderer.draw_path_collection(*kl, **kw)
+
     def _update_methods(self):
         #self.draw_path = self._renderer.draw_path  # see below
         #self.draw_markers = self._renderer.draw_markers
-        self.draw_path_collection = self._renderer.draw_path_collection
+        #self.draw_path_collection = self._renderer.draw_path_collection
         self.draw_quad_mesh = self._renderer.draw_quad_mesh
         self.draw_gouraud_triangle = self._renderer.draw_gouraud_triangle
         self.draw_gouraud_triangles = self._renderer.draw_gouraud_triangles
@@ -326,6 +329,10 @@ def post_processing(image, dpi):
         post_processing is plotted (using draw_image) on it.
         """
 
+        # WARNING.
+        # For agg_filter to work, the rendere's method need
+        # to overridden in the class. See draw_markers, and draw_path_collections
+
         from matplotlib._image import fromarray
 
         width, height = int(self.width), int(self.height)