1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
#!/usr/bin/env python
from nose.tools import *
from utilities import execution_path, run_all, contains_word
import os, mapnik
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
def test_multi_tile_policy():
srs = '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'
lyr = mapnik.Layer('raster')
if 'raster' in mapnik.DatasourceCache.plugin_names():
lyr.datasource = mapnik.Raster(
file = '../data/raster_tiles/${x}/${y}.tif',
lox = -180,
loy = -90,
hix = 180,
hiy = 90,
multi = 1,
tile_size = 256,
x_width = 2,
y_width = 2
)
lyr.srs = srs
_map = mapnik.Map(256, 256, srs)
style = mapnik.Style()
rule = mapnik.Rule()
sym = mapnik.RasterSymbolizer()
rule.symbols.append(sym)
style.rules.append(rule)
_map.append_style('foo', style)
lyr.styles.append('foo')
_map.layers.append(lyr)
_map.zoom_to_box(lyr.envelope())
im = mapnik.Image(_map.width, _map.height)
mapnik.render(_map, im)
# test green chunk
eq_(im.view(0,64,1,1).tostring(), '\x00\xff\x00\xff')
eq_(im.view(127,64,1,1).tostring(), '\x00\xff\x00\xff')
eq_(im.view(0,127,1,1).tostring(), '\x00\xff\x00\xff')
eq_(im.view(127,127,1,1).tostring(), '\x00\xff\x00\xff')
# test blue chunk
eq_(im.view(128,64,1,1).tostring(), '\x00\x00\xff\xff')
eq_(im.view(255,64,1,1).tostring(), '\x00\x00\xff\xff')
eq_(im.view(128,127,1,1).tostring(), '\x00\x00\xff\xff')
eq_(im.view(255,127,1,1).tostring(), '\x00\x00\xff\xff')
# test red chunk
eq_(im.view(0,128,1,1).tostring(), '\xff\x00\x00\xff')
eq_(im.view(127,128,1,1).tostring(), '\xff\x00\x00\xff')
eq_(im.view(0,191,1,1).tostring(), '\xff\x00\x00\xff')
eq_(im.view(127,191,1,1).tostring(), '\xff\x00\x00\xff')
# test magenta chunk
eq_(im.view(128,128,1,1).tostring(), '\xff\x00\xff\xff')
eq_(im.view(255,128,1,1).tostring(), '\xff\x00\xff\xff')
eq_(im.view(128,191,1,1).tostring(), '\xff\x00\xff\xff')
eq_(im.view(255,191,1,1).tostring(), '\xff\x00\xff\xff')
if __name__ == "__main__":
setup()
run_all(eval(x) for x in dir() if x.startswith("test_"))
|
