add map image composing

src/c3nav/mapdata/render/compose.py

@@ -0,0 +1,11 @@
+from django.http import HttpResponse
+from PIL import Image
+
+from c3nav.mapdata.render.utils import get_render_path
+
+
+def get_level_image(request, level):
+    im = Image.open(get_render_path('png', level.name, 'full', True))
+    response = HttpResponse(content_type="image/png")
+    im.save(response, 'PNG')
+    return response