calculate image idimensions from Source dimensions :3

src/c3nav/mapdata/models/section.py

@@ -6,7 +6,6 @@ from shapely.ops import cascaded_union
 
 from c3nav.mapdata.models.base import EditorFormMixin
 from c3nav.mapdata.models.locations import SpecificLocation
-from c3nav.mapdata.utils.misc import get_dimensions
 from c3nav.mapdata.utils.svg import SVGImage
 
 
@@ -64,8 +63,9 @@ class Section(SpecificLocation, EditorFormMixin, models.Model):
         svg.add_geometry(obstacle_geometries, fill_color='#999999')
 
     def render_svg(self, effects=True, draw_spaces=None):
-        width, height = get_dimensions()
-        svg = SVGImage(width=width, height=height, scale=settings.RENDER_SCALE)
+        from c3nav.mapdata.models import Source
+        bounds = Source.max_bounds()
+        svg = SVGImage(bounds=bounds, scale=settings.RENDER_SCALE)
 
         building_geometries = cascaded_union(tuple(b.geometry for b in self.buildings.all()))
 

src/c3nav/mapdata/utils/svg.py

@@ -2,13 +2,14 @@ import re
 import xml.etree.ElementTree as ET
 from itertools import chain
 
-from shapely.affinity import scale
+from shapely.affinity import scale, translate
 
 
 class SVGImage:
-    def __init__(self, width: int, height: int, scale: float=1):
-        self.width = width
-        self.height = height
+    def __init__(self, bounds, scale: float=1):
+        (self.bottom, self.left), (self.top, self.right) = bounds
+        self.width = self.right-self.left
+        self.height = self.top-self.bottom
         self.scale = scale
         self.g = ET.Element('g', {})
         self.defs = ET.Element('defs')
@@ -44,6 +45,7 @@ class SVGImage:
         return re.sub(r'([0-9]+)\.0', r'\1', re.sub(r'([0-9]+\.[0-9])[0-9]+', r'\1', data))
 
     def _create_geometry(self, geometry):
+        geometry = translate(geometry, xoff=0-self.left, yoff=0-self.bottom)
         geometry = scale(geometry, xfact=1, yfact=-1, origin=(self.width / 2, self.height / 2))
         geometry = scale(geometry, xfact=self.scale, yfact=self.scale, origin=(0, 0))
         element = ET.fromstring(self._trim_decimals(geometry.svg(0, '#FFFFFF')))

src/c3nav/routing/route.py

@@ -4,8 +4,6 @@ from collections import OrderedDict
 import numpy as np
 from django.utils.translation import ugettext_lazy as _
 
-from c3nav.mapdata.utils.misc import get_dimensions
-
 
 class Route:
     def __init__(self, connections, distance=None):