in render_full immediate levels now cast shadows

src/c3nav/mapdata/models/level.py

@@ -1,10 +1,12 @@
 from django.db import models
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
+from shapely.geometry import CAP_STYLE
 from shapely.geometry import JOIN_STYLE
 from shapely.ops import cascaded_union
 
 from c3nav.mapdata.models.base import MapItem
+from c3nav.mapdata.utils import assert_multipolygon
 
 
 class Level(MapItem):
@@ -136,3 +138,30 @@ class LevelGeometries():
     @cached_property
     def doors(self):
         return self.raw_doors.difference(self.areas)
+
+    def get_levelconnectors(self, to_level=None):
+        queryset = self.level.levelconnectors.prefetch_related('levels')
+        print(to_level)
+        if to_level is not None:
+            queryset = queryset.filter(levels=to_level)
+        for item in queryset:
+            print(item.levels)
+        return cascaded_union([levelconnector.geometry for levelconnector in queryset])
+
+    @cached_property
+    def levelconnectors(self):
+        return self.get_levelconnectors()
+
+    def intermediate_shadows(self, to_level=None):
+        rings = []
+        for polygon in assert_multipolygon(self.buildings):
+            rings.append(polygon.exterior)
+            rings.extend(polygon.interiors)
+
+        objects = []
+        levelconnectors = self.get_levelconnectors(to_level)
+        for ring in rings:
+            objects.append(ring.difference(levelconnectors))
+        lines = cascaded_union(objects)
+
+        return lines.buffer(0.1, cap_style=CAP_STYLE.flat, join_style=JOIN_STYLE.mitre)

src/c3nav/mapdata/render/__init__.py

@@ -8,11 +8,11 @@ def render_all_levels():
         renderers.append(LevelRenderer(level))
 
     for renderer in renderers:
-        renderer.render_base()
+        pass#renderer.render_base()
 
     for renderer in renderers:
         if not renderer.level.intermediate:
-            renderer.render_simple()
+            pass  #renderer.render_simple()
 
     for renderer in renderers:
         if not renderer.level.intermediate:

src/c3nav/mapdata/render/renderer.py

@@ -174,6 +174,11 @@ class LevelRenderer():
                 break
             higher.append(level)
 
+        contents = self.add_svg_content(svg)
+        for level in higher:
+            contents.append(self.polygon_svg(level.geometries.intermediate_shadows(to_level=self.level),
+                                             fill_color='#9E9E9E'))
+
         for level in higher:
             self.add_svg_image(svg, 'file://'+get_render_path('level-%s.base.png' % level.name))
 

src/c3nav/mapdata/utils.py

@@ -65,3 +65,16 @@ def clean_geometry(geometry):
             return p
 
     return geometry
+
+
+def assert_multipolygon(geometry):
+    """
+    given a Polygon or a MultiPolygon, return a list of Polygons
+    :param geometry: a Polygon or a MultiPolygon
+    :return: a list of Polygons
+    """
+    if isinstance(geometry, Polygon):
+        polygons = [geometry]
+    else:
+        polygons = geometry.geoms
+    return polygons

src/c3nav/routing/graph/level.py

@@ -7,7 +7,8 @@ from shapely.geometry import JOIN_STYLE, Polygon
 
 from c3nav.routing.graph.point import GraphPoint
 from c3nav.routing.graph.room import GraphRoom
-from c3nav.routing.utils.base import assert_multipolygon, get_nearest_point
+from c3nav.routing.utils.base import get_nearest_point
+from c3nav.mapdata.utils import assert_multipolygon
 from c3nav.routing.utils.draw import _ellipse_bbox, _line_coords
 
 

src/c3nav/routing/graph/room.py

@@ -5,7 +5,7 @@ from matplotlib.path import Path
 from shapely.geometry import JOIN_STYLE, LineString
 
 from c3nav.routing.graph.point import GraphPoint
-from c3nav.routing.utils.base import assert_multipolygon
+from c3nav.mapdata.utils import assert_multipolygon
 from c3nav.routing.utils.coords import get_coords_angles
 from c3nav.routing.utils.mpl import polygon_to_mpl_paths
 

src/c3nav/routing/utils/base.py

@@ -1,17 +1,6 @@
 from shapely.geometry import Polygon
 
-
-def assert_multipolygon(geometry):
-    """
-    given a Polygon or a MultiPolygon, return a list of Polygons
-    :param geometry: a Polygon or a MultiPolygon
-    :return: a list of Polygons
-    """
-    if isinstance(geometry, Polygon):
-        polygons = [geometry]
-    else:
-        polygons = geometry.geoms
-    return polygons
+from c3nav.mapdata.utils import assert_multipolygon
 
 
 def get_nearest_point(polygon, point):

src/c3nav/routing/utils/mpl.py

@@ -1,6 +1,6 @@
 from matplotlib.path import Path
 
-from c3nav.routing.utils.base import assert_multipolygon
+from c3nav.mapdata.utils import assert_multipolygon
 
 
 def polygon_to_mpl_paths(polygon):