move renderscad into Level model

src/c3nav/mapdata/management/commands/renderscad.py

@@ -1,17 +1,9 @@
-import os
-from django.conf import settings
 from django.core.management.base import BaseCommand
 
-from c3nav.mapdata.utils.scad import polygon_scad
-
 
 class Command(BaseCommand):
     help = 'render the map to openscad'
 
     def handle(self, *args, **options):
-        from c3nav.mapdata.models import AltitudeArea
-        filename = os.path.join(settings.RENDER_ROOT, 'all.scad')
-        with open(filename, 'w') as f:
-            for area in AltitudeArea.objects.all():
-                f.write('translate([0, 0, %.2f]) ' % area.altitude)
-                f.write(polygon_scad(area.geometry)+';\n')
+        from c3nav.mapdata.models import Level
+        Level.render_scad_all()