def test_write_mixed(self):
print("----- ovf test writing")
with ovf.ovf_file("testfile_py_mixed.ovf") as ovf_file:
data = np.zeros((2, 2, 1, 3), dtype='d')
data[0,1,0,:] = [3.0, 2.0, 1.0]
segment = ovf.ovf_segment(
title="python write test",
comment="more details in this comment...",
valuedim=3,
n_cells=[2,2,1])
success = ovf_file.write_segment(segment, data, fileformat=ovf.FILEFORMAT_BIN)
if success != ovf.OK:
print("write_segment failed: ", ovf_file.get_latest_message())
self.assertTrue( success == ovf.OK )
data[0,1,0,:] = [4.0, 5.0, 6.0]
segment.title = "python append test".encode('utf-8')
success = ovf_file.append_segment(segment, data, fileformat=ovf.FILEFORMAT_CSV)
if success != ovf.OK:
print("append_segment failed: ", ovf_file.get_latest_message())
self.assertTrue( success == ovf.OK )
print("----- ovf test writing done")
print("----- ovf test reading")
with ovf.ovf_file("testfile_py_mixed.ovf") as ovf_file:
print("found: ", ovf_file.found)
print("is_ovf: ", ovf_file.is_ovf)
print("n_segments: ", ovf_file.n_segments)
segment = ovf.ovf_segment()
success = ovf_file.read_segment_header(0, segment)
if success != ovf.OK:
print("read_segment_header failed: ", ovf_file.get_latest_message())
self.assertTrue( success == ovf.OK )
data_shape = (segment.n_cells[0], segment.n_cells[1], segment.n_cells[2], 3)
data = np.zeros(data_shape, dtype='f')
print("data shape: ", data_shape)
success = ovf_file.read_segment_data(0, segment, data)
if success != ovf.OK:
print("read_segment_data failed: ", ovf_file.get_latest_message())
print("first segment: ", data[0,1,0,:])
self.assertTrue( success == ovf.OK )
success = ovf_file.read_segment_header(1, segment)
if success != ovf.OK:
print("read_segment_header failed: ", ovf_file.get_latest_message())
self.assertTrue( success == ovf.OK )
data_shape = (segment.n_cells[0], segment.n_cells[1], segment.n_cells[2], 3)
data = np.zeros(data_shape, dtype='d')
success = ovf_file.read_segment_data(1, segment, data)
if success != ovf.OK:
print("read_segment_data failed: ", ovf_file.get_latest_message())
print("second segment: ", data[0,1,0,:])
self.assertTrue( success == ovf.OK )
print("----- ovf test reading done")
def test_write(self):
print("----- ovf test writing")
with ovf.ovf_file("testfile_py.ovf") as ovf_file:
data = np.zeros((2, 2, 1, 3), dtype='d')
data[0, 1, 0, :] = [3.0, 2.0, 1.0]
segment = ovf.ovf_segment(n_cells=[2, 2, 1], valuedim=3)
success = ovf_file.write_segment(segment, data)
if success != ovf.OK:
print("write_segment failed: ", ovf_file.get_latest_message())
self.assertTrue(success == ovf.OK)
data[0, 1, 0, :] = [4.0, 5.0, 6.0]
success = ovf_file.append_segment(segment, data)
if success != ovf.OK:
print("append_segment failed: ", ovf_file.get_latest_message())
self.assertTrue(success == ovf.OK)
print("----- ovf test writing done")
print("----- ovf test reading")
with ovf.ovf_file("testfile_py.ovf") as ovf_file:
print("found: ", ovf_file.found)
print("is_ovf: ", ovf_file.is_ovf)
print("n_segments: ", ovf_file.n_segments)
segment = ovf.ovf_segment()
success = ovf_file.read_segment_header(0, segment)
if success != ovf.OK:
print("read_segment_header failed: ",
ovf_file.get_latest_message())
data_shape = (segment.n_cells[0], segment.n_cells[1],
segment.n_cells[2], 3)
print("data shape: ", data_shape)
self.assertTrue(success == ovf.OK)
data = np.zeros(data_shape, dtype='f')
success = ovf_file.read_segment_data(0, segment, data)
if success != ovf.OK:
print("read_segment_data failed: ",
ovf_file.get_latest_message())
print("first segment: ", data[0, 1, 0, :])
self.assertTrue(success == ovf.OK)
success = ovf_file.read_segment_data(1, segment, data)
if success != ovf.OK:
print("read_segment_data failed: ",
ovf_file.get_latest_message())
print("second segment: ", data[0, 1, 0, :])
self.assertTrue(success == ovf.OK)
print("----- ovf test reading done")
def test_nonexistent(self):
print("----- ovf test nonexistent")
with ovf.ovf_file("nonexistent.ovf") as ovf_file:
print("found: ", ovf_file.found)
print("is_ovf: ", ovf_file.is_ovf)
print("n_segments: ", ovf_file.n_segments)
segment = ovf.ovf_segment()
success = ovf_file.read_segment_header(0, segment)
if success != ovf.OK:
print("read_segment_header failed: ",
ovf_file.get_latest_message())
self.assertFalse(success == ovf.OK)
print("----- ovf test nonexistent done")
def func2(filename, dim, show_plot):
with ovf.ovf_file(filename) as ovf_file:
some_segment = ovf.ovf_segment()
n = ovf_file.n_segments
print("the number of segments are ", n)
#
for i in range(n):
ovf_file.read_segment_header(i, some_segment)
data_shape = (some_segment.n_cells[0], some_segment.n_cells[1],
some_segment.n_cells[2], 3)
#
record_data = np.zeros(data_shape, dtype='f')
ovf_file.read_segment_data(i, some_segment, record_data)
#
visualise(record_data, i, show_plot)
return
def __init__(self, parent):
super(GLWidget, self).__init__(parent)
# Set the size to be equal to Screen
self.setSize(parent.size())
# self.system_dimensions = np.array([3, 5, 4])
# self.nx = self.system_dimensions[0]
# self.ny = self.system_dimensions[1]
# self.nz = self.system_dimensions[2]
# # Create the VFR.geometry
# n_cells = self.system_dimensions
# self.geometry = vfr.Geometry.rectilinearGeometry(
# range(n_cells[0]), range(n_cells[1]), range(n_cells[2]))
# # Initialize directions
# directions = []
# for iz in range(n_cells[2]):
# for iy in range(n_cells[1]):
# for ix in range(n_cells[0]):
# directions.append([0, 0, 0.5])
# self.directions = np.array(directions)
testfile = "img_out.ovf"
with ovf.ovf_file(testfile) as ovf_file:
print("found: ", ovf_file.found)
print("is_ovf: ", ovf_file.is_ovf)
print("n_segments: ", ovf_file.n_segments)
segment = ovf.ovf_segment()
success = ovf_file.read_segment_header(0, segment)
self.system_dimensions = (segment.n_cells[0], segment.n_cells[1],
segment.n_cells[2], 3)
self.nx = segment.n_cells[0]
self.ny = segment.n_cells[1]
self.nz = segment.n_cells[2]
self.nos = self.nx * self.ny * self.nz
# Create the VFR.geometry
n_cells = self.system_dimensions
self.geometry = vfr.Geometry.rectilinearGeometry(
range(n_cells[0]), range(n_cells[1]), range(n_cells[2]))
print("data shape: ", self.system_dimensions)
self.directions = np.zeros(self.system_dimensions, dtype='f')
success = ovf_file.read_segment_data(0, segment, self.directions)
print("----- ovf test reading done")
# Create the VFR.view
self.view = vfr.View()
self.view.setFramebufferSize(parent.size()[0] * parent.pixelRatio(),
parent.size()[1] * parent.pixelRatio())
# Create/Init VFR.vf
self.vf = vfr.VectorField(self.geometry,
self.directions.reshape((self.nos, 3)))
# Renderers
self.arrows = ArrowsRenderer(self.view, self.vf)
self.dots = DotsRenderer(self.view, self.vf)
self.neighbors = NeighborsRenderer(self.view, self.geometry,
self.system_dimensions)
self.coordinate = CoordinateSystemRenderer(self.view)
self.cubes = CubesRenderer(self.view, self.vf)
self.bounding_box = BoundingBoxRenderer(self.view, self.geometry,
self.system_dimensions)
# self.streamtubes = StreamTubeRenderer(self.view, self.vf, self.system_dimensions)
# Switch on initial renderers
self.arrows.switch()
self.coordinate.switch()
self.bounding_box.switch()
self.updateRenderers()
# Options
self.options = vfr.Options()
self.options.setBackgroundColor([0.5, 0.5, 0.5])
self.options.setColormapImplementation(
vfr.getColormapImplementation(vfr.Colormap.hsv))
self.options.setSystemCenter(
(self.geometry.min() + self.geometry.max()) * 0.5)
self.options.setCameraPosition([0, 0, 30])
self.options.setCenterPosition(
(self.geometry.min() + self.geometry.max()) * 0.5)
self.options.setUpVector([0, 1, 0])
self.view.updateOptions(self.options)
# For mouse movement events
self.previous_mouse_position = [0, 0]
