def test_create_mvt_merc_style_level_filter_1():
style = """
<Map srs="+init=epsg:3857">
<Layer name="polygon" srs="+init=epsg:4326">
<Datasource>
<Parameter name="type">geojson</Parameter>
<Parameter name="inline">
{"type":"Polygon","coordinates":[[
[ 10, 10],
[-10, 10],
[-10, -10],
[ 10, -10],
[ 10, 10]
]]}
</Parameter>
</Datasource>
</Layer>
</Map>
"""
mapnikMap = mapnik.Map(256, 256)
mapnik.load_map_from_string(mapnikMap, style)
wafer = mapnik.create_mvt_wafer_merc(mapnikMap, 0, 0, 3, 8)
eq_(len(wafer), 64)
tile_buffer = wafer[3 * 8 + 3]
tile = mapnik.VectorTileInfo()
tile.parse_from_string(tile_buffer);
eq_(tile.layers_size(), 1);
eq_(tile.layers(0).features_size(), 1)
def test_buffer_size_from_style_overriden_by_parameter():
m = mapnik.Map(256, 256)
mapnik.load_map(m, 'styles/map_buffer_size.xml')
mvt_buffer = mapnik.create_mvt_merc(m, 2048, 2047, 12, buffer_size=0)
tile = mapnik.VectorTileInfo()
tile.parse_from_string(mvt_buffer)
eq_(tile.layers_size(), 1)
eq_(tile.layers(0).features_size(), 1)
def test_create_mvt_merc_filter_by_scale_denom_2():
m = mapnik.Map(256, 256)
mapnik.load_map(m, 'styles/style_level_filter_style.xml')
mvt_buffer = mapnik.create_mvt_merc(m,
2048,
2047,
12,
scale_denom=2 * 200000,
style_level_filter=True)
tile = mapnik.VectorTileInfo()
tile.parse_from_string(mvt_buffer)
eq_(tile.layers_size(), 1)
eq_(tile.layers(0).features_size(), 2)
eq_(tile.layers(0).name(), "L2")
def test_create_mvt_merc_style_level_filter_2():
m = mapnik.Map(256, 256)
mapnik.load_map(m, 'styles/rule_level_filter_style.xml')
mvt_buffer = mapnik.create_mvt_merc(m,
2048,
2047,
12,
style_level_filter=False)
tile = mapnik.VectorTileInfo()
tile.parse_from_string(mvt_buffer)
eq_(tile.layers_size(), 2)
eq_(tile.layers(0).features_size(), 1)
eq_(tile.layers(1).features_size(), 2)
eq_(tile.layers(0).name(), "L1")
eq_(tile.layers(1).name(), "L2")
def test_create_mvt_merc_with_raster():
m = mapnik.Map(256, 256)
mapnik.load_map(m, 'styles/raster.xml')
mvt = mapnik.VectorTileMerc(136, 86, 8)
mvt_buffer = mapnik.create_mvt_merc(m,
mvt.x,
mvt.y,
mvt.z,
tile_size=512,
image_format="tiff")
vti = mapnik.VectorTileInfo()
vti.parse_from_string(mvt_buffer)
eq_(vti.layers_size(), 1)
layer = vti.layers(0)
eq_(layer.features_size(), 1)
feature = layer.features(0)
raster = feature.raster()
eq_(abs(len(raster) - 270050) < 10, True)
img = mapnik.Image.frombuffer(raster)
eq_(img.width(), 512)
eq_(img.height(), 512)
mapnik.merge_compressed_buffer(mvt, mvt_buffer)
im = mapnik.Image(m.width, m.height)
mapnik.render_mvt_merc(mvt, m, im)
actual = 'images/mvt/raster.mvt.actual.png'
im.save(actual, 'png32')
expected = 'images/mvt/raster.mvt.expected.png'
eq_(compare_file_size(actual, expected, 100), True)
im2 = mapnik.Image(m.width, m.height)
m.zoom_to_box(mvt.extent)
mapnik.render(m, im2)
actual2 = 'images/mvt/raster.actual.png'
expected2 = 'images/mvt/raster.expected.png'
im2.save(actual2, 'png32')
eq_(compare_file_size(actual2, expected2, 100), True)
def test_render_mvt_raster_with_large_overzoom():
mvt = mapnik.VectorTileMerc(2788, 6533, 14)
with open('images/mvt/14_2788_6533.webp', 'rb') as f:
mapnik.add_image_layer(mvt, '_image', f.read())
# Look into the tile if there is the image
vti = mapnik.VectorTileInfo()
vti.parse_from_string(mvt.get_buffer())
eq_(vti.layers_size(), 1)
layer = vti.layers(0)
eq_(layer.features_size(), 1)
feature = layer.features(0)
raster = feature.raster()
eq_(len(raster), 98618)
img = mapnik.Image.frombuffer(raster)
eq_(img.width(), 512)
eq_(img.height(), 512)
m = mapnik.Map(256, 256)
mapnik.load_map(m, 'styles/large_overzoom.xml')
im = mapnik.Image(m.width, m.height)
mapnik.render_mvt_merc(mvt,
m,
im,
x=2855279,
y=6690105,
z=24,
scale_factor=1,
buffer_size=256)
expected = 'images/mvt/large_overzoom.expected.png'
actual = 'images/mvt/large_overzoom.actual.png'
im.save(actual, 'png32')
eq_(compare_file_size(actual, expected, 100), True)