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()

src/c3nav/mapdata/models/access.py

@@ -35,11 +35,11 @@ class AccessRestrictionMixin(SerializableMixin, models.Model):
         return result
 
     @classmethod
-    def qs_for_request(cls, request):
-        return cls.objects.filter(cls.q_for_request(request))
+    def qs_for_request(cls, request, allow_none=False):
+        return cls.objects.filter(cls.q_for_request(request, allow_none=allow_none))
 
     @classmethod
-    def q_for_request(cls, request, prefix=''):
-        if request.user.is_authenticated and request.user.is_superuser:
+    def q_for_request(cls, request, prefix='', allow_none=False):
+        if (request is None and allow_none) or (request.user.is_authenticated and request.user.is_superuser):
             return Q()
         return Q(**{prefix + 'access_restriction__isnull': True})

src/c3nav/mapdata/models/level.py

@@ -1,3 +1,4 @@
+import os
 from itertools import chain
 
 from django.conf import settings
@@ -8,6 +9,7 @@ from shapely.geometry import JOIN_STYLE
 from shapely.ops import cascaded_union
 
 from c3nav.mapdata.models.locations import SpecificLocation
+from c3nav.mapdata.utils.scad import polygon_scad
 from c3nav.mapdata.utils.svg import SVGImage
 
 
@@ -158,3 +160,31 @@ class Level(SpecificLocation, models.Model):
         svg.add_geometry(door_geometries, fill_color='#ffffff', stroke_color='#929292', stroke_width=0.05)
 
         return svg.get_xml()
+
+    def render_scad(self, f, spaces=None, request=None):
+        if spaces is None:
+            from c3nav.mapdata.models import Area, Space
+            spaces = self.spaces.filter(Space.q_for_request(request, allow_none=True)).prefetch_related(
+                Prefetch('areas', Area.qs_for_request(request, allow_none=True)),
+                'groups', 'columns', 'holes', 'areas__groups',
+                'stairs', 'obstacles', 'lineobstacles'
+            )
+        for area in self.altitudeareas.all():
+            f.write('translate([0, 0, %.2f]) ' % area.altitude)
+            f.write(polygon_scad(area.geometry) + ';\n')
+
+    @classmethod
+    def render_scad_all(cls, request=None):
+        from c3nav.mapdata.models import Level, Area, Space
+        spaces = Space.objects.filter(Space.q_for_request(request, allow_none=True)).prefetch_related(
+            Prefetch('areas', Area.qs_for_request(request, allow_none=True)),
+            'groups', 'columns', 'holes', 'areas__groups',
+            'stairs', 'obstacles', 'lineobstacles'
+        )
+        level_spaces = {}
+        for space in spaces:
+            level_spaces.setdefault(space.level_id, []).append(space)
+        filename = os.path.join(settings.RENDER_ROOT, 'all.scad')
+        with open(filename, 'w') as f:
+            for level in Level.objects.prefetch_related('altitudeareas'):
+                level.render_scad(f, spaces=level_spaces.get(level.pk, []))