def test_reading_palettes():
act = open('../data/palettes/palette64.act','rb')
palette = mapnik.Palette(act.read(),'act')
eq_(palette.to_string(),expected_64);
act = open('../data/palettes/palette256.act','rb')
palette = mapnik.Palette(act.read(),'act')
eq_(palette.to_string(),expected_256);
palette = mapnik.Palette('\xff\x00\xff\xff\xff\xff', 'rgb')
eq_(palette.to_string(),expected_rgb);
def test_reading_palettes():
with open('../data/palettes/palette64.act', 'rb') as act:
palette = mapnik.Palette(act.read(), 'act')
eq_(palette.to_string(), expected_64)
with open('../data/palettes/palette256.act', 'rb') as act:
palette = mapnik.Palette(act.read(), 'act')
eq_(palette.to_string(), expected_256)
palette = mapnik.Palette(b'\xff\x00\xff\xff\xff\xff', 'rgb')
eq_(palette.to_string(), expected_rgb)
def test_render_with_palette():
m = mapnik.Map(600, 400)
mapnik.load_map(m, '../data/good_maps/agg_poly_gamma_map.xml')
m.zoom_all()
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
with open('../data/palettes/palette256.act', 'rb') as act:
palette = mapnik.Palette(act.read(), 'act')
# test saving directly to filesystem
im.save('/tmp/mapnik-palette-test.png', 'png', palette)
expected = './images/support/mapnik-palette-test.png'
if os.environ.get('UPDATE'):
im.save(expected, "png", palette)
# test saving to a string
with open('/tmp/mapnik-palette-test2.png', 'wb') as f:
f.write(im.tostring('png', palette))
# compare the two methods
eq_(
mapnik.Image.open('/tmp/mapnik-palette-test.png').tostring(
'png32'),
mapnik.Image.open('/tmp/mapnik-palette-test2.png').tostring(
'png32'), '%s not eq to %s' %
('/tmp/mapnik-palette-test.png', '/tmp/mapnik-palette-test2.png'))
# compare to expected
eq_(
mapnik.Image.open('/tmp/mapnik-palette-test.png').tostring(
'png32'),
mapnik.Image.open(expected).tostring('png32'),
'%s not eq to %s' % ('/tmp/mapnik-palette-test.png', expected))
def test_render_with_palette():
m = mapnik.Map(600, 400)
mapnik.load_map(m, '../data/good_maps/agg_poly_gamma_map.xml')
m.zoom_all()
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
act = open('../data/palettes/palette256.act', 'rb')
palette = mapnik.Palette(act.read(), 'act')
# test saving directly to filesystem
im.save('/tmp/mapnik-palette-test.png', 'png', palette)
# test saving to a string
open('/tmp/mapnik-palette-test2.png',
'wb').write(im.tostring('png', palette))
# compare the two methods
eq_(
mapnik.Image.open('/tmp/mapnik-palette-test.png').tostring(),
mapnik.Image.open('/tmp/mapnik-palette-test2.png').tostring())
# compare to expected
eq_(
mapnik.Image.open('/tmp/mapnik-palette-test.png').tostring(),
mapnik.Image.open(
'./images/support/mapnik-palette-test.png').tostring())
