improve renderer: add obstacles and doors

src/c3nav/mapdata/models/level.py

@@ -1,6 +1,7 @@
 from django.db import models
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
+from shapely.geometry import JOIN_STYLE
 from shapely.ops import cascaded_union
 
 from c3nav.mapdata.models.base import MapItem
@@ -57,3 +58,35 @@ class LevelGeometries():
     @cached_property
     def areas(self):
         return cascaded_union([area.geometry for area in self.level.areas.all()])
+
+    @cached_property
+    def mapped(self):
+        return cascaded_union([self.buildings, self.areas])
+
+    @cached_property
+    def obstacles(self):
+        return cascaded_union([obstacle.geometry for obstacle in self.level.obstacles.all()])
+
+    @cached_property
+    def raw_doors(self):
+        return cascaded_union([door.geometry for door in self.level.doors.all()]).intersection(self.mapped)
+
+    @cached_property
+    def areas_and_doors(self):
+        return cascaded_union([self.areas, self.raw_doors])
+
+    @cached_property
+    def walls(self):
+        return self.buildings.difference(self.areas)
+
+    @cached_property
+    def walls_without_doors(self):
+        return self.walls.difference(self.areas_and_doors)
+
+    @cached_property
+    def walls_shadow(self):
+        return self.walls_without_doors.buffer(0.2, join_style=JOIN_STYLE.mitre).intersection(self.mapped)
+
+    @cached_property
+    def doors(self):
+        return self.raw_doors.difference(self.areas)