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proper understanding of a rectiliniearGrid

This commit is contained in:
Philip Eisenlohr 2022-02-17 17:54:26 -05:00
parent 4426172c14
commit 38ac791b58
3 changed files with 30 additions and 35 deletions
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16
python/damask/_vtk.py
View File

@ -83,20 +83,14 @@ class VTK:
@staticmethod @staticmethod
def from_rectilinear_grid(grid: np.ndarray, def from_rectilinear_grid(grid: FloatSequence) -> 'VTK':
size: FloatSequence,
origin: FloatSequence = np.zeros(3)) -> 'VTK':
""" """
Create VTK of type vtk.vtkRectilinearGrid. Create VTK of type vtk.vtkRectilinearGrid.
Parameters Parameters
---------- ----------
grid : iterable of int, len (3) grid : iterables of floats, len (3)
Number of cells along each dimension. Grid coordinates along x, y, and z directions.
size : iterable of float, len (3)
Physical length along each dimension.
origin : iterable of float, len (3), optional
Coordinates of grid origin.
Returns Returns
------- -------
@ -106,8 +100,8 @@ class VTK:
""" """
warnings.warn('Support for vtr files will be removed in DAMASK 3.1.0', DeprecationWarning,2) warnings.warn('Support for vtr files will be removed in DAMASK 3.1.0', DeprecationWarning,2)
vtk_data = vtk.vtkRectilinearGrid() vtk_data = vtk.vtkRectilinearGrid()
vtk_data.SetDimensions(*(np.array(grid)+1)) vtk_data.SetDimensions(*map(len,grid))
coord = [np_to_vtk(np.linspace(origin[i],origin[i]+size[i],grid[i]+1),deep=True) for i in [0,1,2]] coord = [np_to_vtk(np.array(grid[i]),deep=True) for i in [0,1,2]]
[coord[i].SetName(n) for i,n in enumerate(['x','y','z'])] [coord[i].SetName(n) for i,n in enumerate(['x','y','z'])]
vtk_data.SetXCoordinates(coord[0]) vtk_data.SetXCoordinates(coord[0])
vtk_data.SetYCoordinates(coord[1]) vtk_data.SetYCoordinates(coord[1])

30
python/tests/reference/VTK/rectilinearGrid.vtr vendored
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@ -1,42 +1,42 @@
<?xml version="1.0"?> <?xml version="1.0"?>
<VTKFile type="RectilinearGrid" version="0.1" byte_order="LittleEndian" header_type="UInt32" compressor="vtkZLibDataCompressor"> <VTKFile type="RectilinearGrid" version="0.1" byte_order="LittleEndian" header_type="UInt32" compressor="vtkZLibDataCompressor">
<RectilinearGrid WholeExtent="0 5 0 6 0 7"> <RectilinearGrid WholeExtent="0 3 0 4 0 5">
<Piece Extent="0 5 0 6 0 7"> <Piece Extent="0 3 0 4 0 5">
<PointData> <PointData>
<DataArray type="Float32" Name="node" NumberOfComponents="3" format="binary" RangeMin="0" RangeMax="1.268857765318962"> <DataArray type="Float32" Name="node" NumberOfComponents="3" format="binary" RangeMin="0" RangeMax="31.016124838541646">
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<InformationKey name="L2_NORM_RANGE" location="vtkDataArray" length="2"> <InformationKey name="L2_NORM_RANGE" location="vtkDataArray" length="2">
<Value index="0"> <Value index="0">
0 0
</Value> </Value>
<Value index="1"> <Value index="1">
1.2688577653 31.016124839
</Value> </Value>
</InformationKey> </InformationKey>
</DataArray> </DataArray>
</PointData> </PointData>
<CellData> <CellData>
<DataArray type="Float32" Name="cell" NumberOfComponents="3" format="binary" RangeMin="0.10871961651677305" RangeMax="1.1607924233069467"> <DataArray type="Float32" Name="cell" NumberOfComponents="3" format="binary" RangeMin="0" RangeMax="18.788294228055936">
AQAAAACAAADYCQAA8QEAAA==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 AQAAAACAAADQAgAAigAAAA==eF5tkQEOgDAIA32CP7L+bE83oMBVJVnWhGMt2bax1gEta3Uv7tb6n0mmtPyt/RymtUZXmQ/fe+Wwo/981pPnDt9iWmt0FWe403tn89NozlkfJyp9hTxCnodpjjtgPsr2Ob7vJiMw8OB/xF1Ma42uWsizkGchTzGtNToZgREYDZP+yFPMrS+Grlfp
<InformationKey name="L2_NORM_RANGE" location="vtkDataArray" length="2"> <InformationKey name="L2_NORM_RANGE" location="vtkDataArray" length="2">
<Value index="0"> <Value index="0">
0.10871961652 0
</Value> </Value>
<Value index="1"> <Value index="1">
1.1607924233 18.788294228
</Value> </Value>
</InformationKey> </InformationKey>
</DataArray> </DataArray>
</CellData> </CellData>
<Coordinates> <Coordinates>
<DataArray type="Float64" Name="x" format="binary" RangeMin="0" RangeMax="0.6"> <DataArray type="Float64" Name="x" format="binary" RangeMin="0" RangeMax="9">
AQAAAACAAAAwAAAAJwAAAA==eF5jYICAHXKtrwN37LOH0Ofsua4vLrDlug7l37M3BoPH9gCdQxK6 AQAAAACAAAAgAAAAFQAAAA==eF5jYEAGH+whtIADhFZyAAAYkwHi
</DataArray> </DataArray>
<DataArray type="Float64" Name="y" format="binary" RangeMin="0" RangeMax="1"> <DataArray type="Float64" Name="y" format="binary" RangeMin="0" RangeMax="16">
AQAAAACAAAA4AAAAIgAAAA==eF5jYICAUDA4ag+hr9pDRB9A+U/tV4HBK6j4B3sAk7wQqg== AQAAAACAAAAoAAAAFwAAAA==eF5jYEAGH+whtIADhFaC0gYOAChDAlI=
</DataArray> </DataArray>
<DataArray type="Float64" Name="z" format="binary" RangeMin="0" RangeMax="0.5"> <DataArray type="Float64" Name="z" format="binary" RangeMin="0" RangeMax="25">
AQAAAACAAABAAAAALAAAAA==eF5jYICASSqeQLTJHkIfsr+9LReITkP5l+zB3NvXoOK37SG6HtgDANusGUo= AQAAAACAAAAwAAAAGgAAAA==eF5jYEAGH+whtIADhFaC0gZQ2tIBADuFAss=
</DataArray> </DataArray>
</Coordinates> </Coordinates>
</Piece> </Piece>

19
python/tests/test_VTK.py
View File

@ -34,10 +34,9 @@ class TestVTK:
default.show() default.show()
def test_rectilinearGrid(self,tmp_path): def test_rectilinearGrid(self,tmp_path):
cells = np.random.randint(5,10,3)*2 grid = np.sort(np.random.random((3,10)))
size = np.random.random(3) + 1.0 print(grid)
origin = np.random.random(3) v = VTK.from_rectilinear_grid(grid)
v = VTK.from_rectilinear_grid(cells,size,origin)
string = v.__repr__() string = v.__repr__()
v.save(tmp_path/'rectilinearGrid',False) v.save(tmp_path/'rectilinearGrid',False)
vtr = VTK.load(tmp_path/'rectilinearGrid.vtr') vtr = VTK.load(tmp_path/'rectilinearGrid.vtr')
@ -196,11 +195,13 @@ class TestVTK:
@pytest.mark.xfail(int(vtk.vtkVersion.GetVTKVersion().split('.')[0])<8, reason='missing METADATA') @pytest.mark.xfail(int(vtk.vtkVersion.GetVTKVersion().split('.')[0])<8, reason='missing METADATA')
def test_compare_reference_rectilinearGrid(self,update,ref_path,tmp_path): def test_compare_reference_rectilinearGrid(self,update,ref_path,tmp_path):
cells = np.array([5,6,7],int) grid = [np.arange(4)**2.,
size = np.array([.6,1.,.5]) np.arange(5)**2.,
rectilinearGrid = VTK.from_rectilinear_grid(cells,size) np.arange(6)**2.] # ParaView renders tetrahedral meshing unless using float coordinates!
c = grid_filters.coordinates0_point(cells,size).reshape(-1,3,order='F') rectilinearGrid = VTK.from_rectilinear_grid(grid)
n = grid_filters.coordinates0_node(cells,size).reshape(-1,3,order='F') coords = np.stack(np.meshgrid(*grid,indexing='ij'),axis=-1)
c = coords[:-1,:-1,:-1,:].reshape(-1,3,order='F')
n = coords[:,:,:,:].reshape(-1,3,order='F')
rectilinearGrid.add(np.ascontiguousarray(c),'cell') rectilinearGrid.add(np.ascontiguousarray(c),'cell')
rectilinearGrid.add(np.ascontiguousarray(n),'node') rectilinearGrid.add(np.ascontiguousarray(n),'node')
if update: if update: