From 6e1c33e59ab2f3db2ff0034e2ddddb0edb01ee5b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laura=20Kl=C3=BCnder?= <laura@codingcatgirl.de>
Date: Sun, 4 Dec 2016 18:14:36 +0100
Subject: [PATCH] rendermap: add hole shadows

---
 src/c3nav/mapdata/models/level.py    | 9 +++++++++
 src/c3nav/mapdata/render/renderer.py | 7 ++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/c3nav/mapdata/models/level.py b/src/c3nav/mapdata/models/level.py
index 41a307c9..bc50b71d 100644
--- a/src/c3nav/mapdata/models/level.py
+++ b/src/c3nav/mapdata/models/level.py
@@ -176,3 +176,12 @@ class LevelGeometries():
         if to_level is not None:
             shadows = shadows.intersection(to_level.geometries.accessible)
         return shadows
+
+    def hole_shadows(self):
+        holes = self.holes.buffer(0.1, join_style=JOIN_STYLE.mitre)
+        shadows = holes.difference(self.holes.buffer(-0.3, join_style=JOIN_STYLE.mitre))
+        qs = self.level.levelconnectors.prefetch_related('levels').filter(levels__altitude__lt=self.level.altitude)
+        print(self.level.name, qs)
+        connectors = cascaded_union([levelconnector.geometry for levelconnector in qs])
+        shadows = shadows.difference(connectors.buffer(0.3, join_style=JOIN_STYLE.mitre))
+        return shadows
diff --git a/src/c3nav/mapdata/render/renderer.py b/src/c3nav/mapdata/render/renderer.py
index ca29a6e6..ae36cc17 100644
--- a/src/c3nav/mapdata/render/renderer.py
+++ b/src/c3nav/mapdata/render/renderer.py
@@ -172,6 +172,11 @@ class LevelRenderer():
         for level in lower:
             self.add_svg_image(svg, 'file://'+get_render_path('level-%s.base.png' % level.name))
 
+        contents = self.add_svg_content(svg)
+        contents.append(self.polygon_svg(self.level.geometries.hole_shadows(),
+                                         fill_color='#000000',
+                                         fill_opacity=0.1))
+
         filename = get_render_path('level-%s.simple.svg' % self.level.name)
         with open(filename, 'w') as f:
             f.write(ET.tostring(svg).decode())
@@ -195,7 +200,7 @@ class LevelRenderer():
         for level in higher:
             contents.append(self.polygon_svg(level.geometries.intermediate_shadows(to_level=self.level),
                                              fill_color='#000000',
-                                             fill_opacity=0.05))
+                                             fill_opacity=0.1))
 
         for level in higher:
             self.add_svg_image(svg, 'file://'+get_render_path('level-%s.base.png' % level.name))