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#!/usr/bin/env python
from vtkmodules import vtkIOFides
from vtkmodules.vtkCommonExecutionModel import vtkStreamingDemandDrivenPipeline
from vtk.util.misc import vtkGetDataRoot
try:
# Not directly used here, but if it's not imported when VTK_USE_MPI, we get following error:
# Attempting to use an MPI routine before initializing MPICH
from mpi4py import MPI
except ImportError:
pass
VTK_DATA_ROOT = vtkGetDataRoot()
from vtk.test import Testing
class TestFidesBasic(Testing.vtkTest):
def testFirst(self):
r = vtkIOFides.vtkFidesReader()
r.ParseDataModel("" + str(VTK_DATA_ROOT) + "/Data/vtk-uns-grid-2.json")
r.SetDataSourcePath("source",
"" + str(VTK_DATA_ROOT) + "/Data/tris-blocks-time.bp")
r.UpdateInformation()
self.assertTrue(r.GetOutputInformation(0).Has(
vtkStreamingDemandDrivenPipeline.TIME_STEPS()))
nsteps = r.GetOutputInformation(0).Length(vtkStreamingDemandDrivenPipeline.TIME_STEPS())
self.assertEqual(nsteps, 5)
for i in range(nsteps):
self.assertEqual(r.GetOutputInformation(0).Get(
vtkStreamingDemandDrivenPipeline.TIME_STEPS(),i), i)
pds = r.GetPointDataArraySelection()
pds.DisableAllArrays()
pds.EnableArray("dpot2")
r.ConvertToVTKOn()
r.Update()
pds = r.GetOutputDataObject(0)
nParts = pds.GetNumberOfPartitions()
self.assertEqual(nParts, 4)
ds = pds.GetPartition(0)
self.assertEqual(ds.GetNumberOfCells(), 24)
self.assertEqual(ds.GetNumberOfPoints(), 20)
self.assertEqual(ds.GetPointData().GetNumberOfArrays(), 1)
self.assertEqual(ds.GetPointData().GetArray(0).GetName(), "dpot2")
return
def testSecond(self):
r = vtkIOFides.vtkFidesReader()
r.ParseDataModel(str(VTK_DATA_ROOT) + "/Data/vtk-uns-grid-2.json")
r.SetDataSourcePath("source",
str(VTK_DATA_ROOT) + "/Data/tris-blocks-time.bp")
r.UpdateInformation()
self.assertTrue(r.GetOutputInformation(0).Has(
vtkStreamingDemandDrivenPipeline.TIME_STEPS()))
nsteps = r.GetOutputInformation(0).Length(vtkStreamingDemandDrivenPipeline.TIME_STEPS())
self.assertEqual(nsteps, 5)
for i in range(nsteps):
self.assertEqual(r.GetOutputInformation(0).
Get(vtkStreamingDemandDrivenPipeline.TIME_STEPS(),i), i)
pds = r.GetPointDataArraySelection()
pds.DisableAllArrays()
pds.EnableArray("dpot2")
r.Update()
pds = r.GetOutputDataObject(0)
nParts = pds.GetNumberOfPartitions()
self.assertEqual(nParts, 4)
ds = pds.GetPartition(0)
self.assertEqual(ds.GetNumberOfCells(), 24)
self.assertEqual(ds.GetNumberOfPoints(), 20)
self.assertEqual(ds.GetPointData().GetNumberOfArrays(), 1)
self.assertEqual(ds.GetPointData().GetArray(0).GetName(), "dpot2")
self.assertEqual(ds.GetClassName(), "vtkmDataSet")
return
def testThird(self):
r = vtkIOFides.vtkFidesReader()
r.ParseDataModel(str(VTK_DATA_ROOT) + "/Data/vtk-uns-grid-2.json")
r.SetDataSourcePath("source",
str(VTK_DATA_ROOT) + "/Data/tris-blocks-time.bp")
r.PrepareNextStep()
r.Update()
r.PrepareNextStep()
r.Update()
r.PrepareNextStep()
r.Update()
pds = r.GetOutputDataObject(0)
nParts = pds.GetNumberOfPartitions()
self.assertEqual(nParts, 4)
ds = pds.GetPartition(0)
self.assertEqual(ds.GetNumberOfCells(), 24)
self.assertEqual(ds.GetNumberOfPoints(), 20)
self.assertEqual(ds.GetPointData().GetNumberOfArrays(), 2)
self.assertEqual(ds.GetPointData().GetArray(0).GetName(), "dpot")
self.assertEqual(ds.GetClassName(), "vtkmDataSet")
return
def testFourth(self):
# This test is based on selecting a BP file that contains some attributes that helps Fides
# generate a data model, instead of the user providing the data model.
r = vtkIOFides.vtkFidesReader()
r.SetFileName(VTK_DATA_ROOT + "/Data/cartesian-attr.bp")
r.UpdateInformation()
self.assertTrue(r.GetOutputInformation(0).Has(
vtkStreamingDemandDrivenPipeline.TIME_STEPS()))
nsteps = r.GetOutputInformation(0).Length(vtkStreamingDemandDrivenPipeline.TIME_STEPS())
self.assertEqual(nsteps, 1)
for i in range(nsteps):
self.assertEqual(r.GetOutputInformation(0).Get(
vtkStreamingDemandDrivenPipeline.TIME_STEPS(),i), i)
pds = r.GetPointDataArraySelection()
pds.DisableAllArrays()
pds.EnableArray("density")
r.ConvertToVTKOn()
r.Update()
pds = r.GetOutputDataObject(0)
nParts = pds.GetNumberOfPartitions()
self.assertEqual(nParts, 1)
ds = pds.GetPartition(0)
self.assertEqual(ds.GetNumberOfCells(), 440)
self.assertEqual(ds.GetNumberOfPoints(), 648)
self.assertEqual(ds.GetPointData().GetNumberOfArrays(), 1)
self.assertEqual(ds.GetPointData().GetArray(0).GetName(), "density")
return
if __name__ == "__main__":
Testing.main([(TestFidesBasic, 'test')])
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