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Tests: use a proper transform

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This commit is contained in:
Dane Springmeyer 2013-01-29 01:04:07 -05:00
parent ef4ee9efb2
commit ba4eeabcd9
1 changed files with 5 additions and 3 deletions
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8
tests/python_tests/render_test.py
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@ -128,17 +128,19 @@ def test_render_points():
lr_lonlat = mapnik.Coord(143.40,-38.80)
# render for different projections
projs = {
'google': '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over',
'latlon': '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs',
'merc': '+proj=merc +datum=WGS84 +k=1.0 +units=m +over +no_defs',
'google': '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over',
'utm': '+proj=utm +zone=54 +datum=WGS84'
}
for projdescr in projs.iterkeys():
m = mapnik.Map(1000, 500, projs[projdescr])
m.append_style('places_labels',s)
m.layers.append(lyr)
p = mapnik.Projection(projs[projdescr])
m.zoom_to_box(p.forward(mapnik.Box2d(ul_lonlat,lr_lonlat)))
dest_proj = mapnik.Projection(projs[projdescr])
src_proj = mapnik.Projection('+init=epsg:4326')
tr = mapnik.ProjTransform(src_proj,dest_proj)
m.zoom_to_box(tr.forward(mapnik.Box2d(ul_lonlat,lr_lonlat)))
# Render to SVG so that it can be checked how many points are there with string comparison
svg_file = os.path.join(tempfile.gettempdir(), 'mapnik-render-points-%s.svg' % projdescr)
mapnik.render_to_file(m, svg_file)