def test_align_to_grid(self):
with LibVips.disable_warnings():
# bluemarble.tif is a 1024 × 1024 whole-world map.
dataset = VipsDataset(inputfile=self.inputfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 1024)
self.assertEqual(dataset.image.height, 1024)
self.assertEqual(dataset.RasterXSize, 1024)
self.assertEqual(dataset.RasterYSize, 1024)
self.assertExtentsEqual(dataset.GetExtents(),
dataset.GetTiledExtents())
# bluemarble-foreign.tif is a 500 × 250 whole-world map.
dataset = VipsDataset(inputfile=self.foreignfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 512)
self.assertEqual(dataset.image.height, 512)
self.assertEqual(dataset.RasterXSize, 512)
self.assertEqual(dataset.RasterYSize, 512)
self.assertEqual(dataset.GetExtents(), dataset.GetTiledExtents())
# bluemarble-spanning-foreign.tif is a 154 × 154 whole-world map.
dataset = VipsDataset(inputfile=self.spanningforeignfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 256)
self.assertEqual(dataset.image.height, 256)
self.assertEqual(dataset.RasterXSize, 256)
self.assertEqual(dataset.RasterYSize, 256)
self.assertExtentsEqual(dataset.GetExtents(),
dataset.GetTiledExtents())
# The upper-left corner should be transparent
data = numpy.frombuffer(dataset.image.write_to_memory(),
dtype=numpy.uint8)
self.assertEqual(tuple(data[0:4]), rgba(0, 0, 0, 0))
def test_align_to_grid(self):
with LibVips.disable_warnings():
# bluemarble.tif is a 1024 × 1024 whole-world map.
dataset = VipsDataset(inputfile=self.inputfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 1024)
self.assertEqual(dataset.image.height, 1024)
self.assertEqual(dataset.RasterXSize, 1024)
self.assertEqual(dataset.RasterYSize, 1024)
self.assertExtentsEqual(dataset.GetExtents(),
dataset.GetTiledExtents())
# bluemarble-foreign.tif is a 500 × 250 whole-world map.
dataset = VipsDataset(inputfile=self.foreignfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 512)
self.assertEqual(dataset.image.height, 512)
self.assertEqual(dataset.RasterXSize, 512)
self.assertEqual(dataset.RasterYSize, 512)
self.assertEqual(dataset.GetExtents(),
dataset.GetTiledExtents())
# bluemarble-spanning-foreign.tif is a 154 × 154 whole-world map.
dataset = VipsDataset(inputfile=self.spanningforeignfile)
dataset.align_to_grid()
self.assertEqual(dataset.image.width, 256)
self.assertEqual(dataset.image.height, 256)
self.assertEqual(dataset.RasterXSize, 256)
self.assertEqual(dataset.RasterYSize, 256)
self.assertExtentsEqual(dataset.GetExtents(),
dataset.GetTiledExtents())
# The upper-left corner should be transparent
data = numpy.frombuffer(dataset.image.write_to_memory(),
dtype=numpy.uint8)
self.assertEqual(tuple(data[0:4]),
rgba(0, 0, 0, 0))