41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
#!/usr/bin/env python
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from nose.tools import *
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import mapnik2, pickle
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# Tests that exercise map projections.
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# Trac Ticket #128
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def test_wgs84_inverse_forward():
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p = mapnik2.Projection('+init=epsg:4326')
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c = mapnik2.Coord(3.01331418311, 43.3333092669)
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e = mapnik2.Box2d(-122.54345245, 45.12312553, 68.2335581353, 48.231231233)
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# It appears that the y component changes very slightly, is this OK?
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# so we test for 'almost equal float values'
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assert_almost_equal(p.inverse(c).y, c.y)
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assert_almost_equal(p.inverse(c).x, c.x)
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assert_almost_equal(p.forward(c).y, c.y)
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assert_almost_equal(p.forward(c).x, c.x)
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assert_almost_equal(p.inverse(e).center().y, e.center().y)
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assert_almost_equal(p.inverse(e).center().x, e.center().x)
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assert_almost_equal(p.forward(e).center().y, e.center().y)
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assert_almost_equal(p.forward(e).center().x, e.center().x)
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assert_almost_equal(c.inverse(p).y, c.y)
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assert_almost_equal(c.inverse(p).x, c.x)
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assert_almost_equal(c.forward(p).y, c.y)
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assert_almost_equal(c.forward(p).x, c.x)
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assert_almost_equal(e.inverse(p).center().y, e.center().y)
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assert_almost_equal(e.inverse(p).center().x, e.center().x)
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assert_almost_equal(e.forward(p).center().y, e.center().y)
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assert_almost_equal(e.forward(p).center().x, e.center().x)
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