def test_read_points_x(image_and_points):
imf, points = image_and_points
bufs = libe57.VectorSourceDestBuffer()
capacity = 10000
X = np.zeros(capacity, "f")
bufs.append(
libe57.SourceDestBuffer(imf, "cartesianX", X, capacity, True, True))
data_reader = points.reader(bufs)
size = data_reader.read()
assert size == capacity
assert not np.all(np.zeros(capacity, "f") == X)
def make_buffer(self,
field_name,
capacity,
do_conversion=True,
do_scaling=True):
if field_name not in SUPPORTED_POINT_FIELDS:
raise ValueError("Unsupported point field: %s" % field_name)
np_array = np.empty(capacity, SUPPORTED_POINT_FIELDS[field_name])
buffer = libe57.SourceDestBuffer(self.image_file, field_name, np_array,
capacity, do_conversion, do_scaling)
return np_array, buffer
def test_source_dest_buffers(e57_path):
f = libe57.ImageFile(e57_path, "r")
capacity = 1000
types = list("bBhHlLq?fd")
sizes = [1, 1, 2, 2, 4, 4, 8, 1, 4, 8]
buffers = libe57.VectorSourceDestBuffer()
for t in types:
data = np.zeros(capacity, t)
sdb = libe57.SourceDestBuffer(f, "something", data, capacity, True,
True)
buffers.append(sdb)
for t, sdb, size, in zip(types, buffers, sizes):
assert sdb.pathName() == "something"
assert sdb.capacity() == capacity
assert sdb.stride() == size
assert sdb.doScaling()
assert sdb.doConversion()
def test_source_dest_buffers_raises(e57_path):
f = libe57.ImageFile(e57_path, "r")
capacity = 1000
data = np.zeros(capacity, "i")
with pytest.raises(ValueError):
libe57.SourceDestBuffer(f, "something", data, capacity, True, True)
