rendermap: add --show-accessibles

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

@@ -6,5 +6,9 @@ from c3nav.mapdata.render import render_all_levels
 class Command(BaseCommand):
     help = 'render the map'
 
+    def add_arguments(self, parser):
+        parser.add_argument('--show-accessibles', action='store_const', const=True, default=False,
+                            help='highlight graph building areas (for debugging, but it looks nice, too)')
+
     def handle(self, *args, **options):
-        render_all_levels()
+        render_all_levels(show_accessibles=options['show_accessibles'])

src/c3nav/mapdata/render/__init__.py

@@ -2,13 +2,13 @@ from c3nav.mapdata.models import Level
 from c3nav.mapdata.render.renderer import LevelRenderer, get_render_path  # noqa
 
 
-def render_all_levels():
+def render_all_levels(show_accessibles=False):
     renderers = []
     for level in Level.objects.all().order_by('altitude'):
         renderers.append(LevelRenderer(level))
 
     for renderer in renderers:
-        renderer.render_base()
+        renderer.render_base(show_accessibles=show_accessibles)
 
     for renderer in renderers:
         if not renderer.level.intermediate:

src/c3nav/mapdata/render/renderer.py

@@ -91,7 +91,7 @@ class LevelRenderer():
         })
         svg.append(contents)
 
-    def render_base(self, png=True):
+    def render_base(self, png=True, show_accessibles=False):
         svg = self.create_svg()
         contents = self.add_svg_content(svg)
 
@@ -111,6 +111,23 @@ class LevelRenderer():
                                          fill_color='#000000',
                                          fill_opacity=0.06))
 
+        if show_accessibles:
+            main_geometry = self.level.geometries.accessible.buffer(-0.6, join_style=JOIN_STYLE.mitre)
+            clear_geometry = self.level.geometries.accessible.buffer(-0.3, join_style=JOIN_STYLE.mitre)
+            missing_geometry = clear_geometry.difference(main_geometry.buffer(0.31, join_style=JOIN_STYLE.mitre))
+
+            contents.append(self.polygon_svg(clear_geometry,
+                                             fill_color='#FFFF00',
+                                             fill_opacity=0.5))
+
+            contents.append(self.polygon_svg(main_geometry,
+                                             fill_color='#009900',
+                                             fill_opacity=0.5))
+
+            contents.append(self.polygon_svg(missing_geometry,
+                                             fill_color='#FF9900',
+                                             fill_opacity=0.5))
+
         contents.append(self.polygon_svg(self.level.geometries.elevatorlevels,
                                          fill_color='#9EF8FB'))