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from vtkmodules.vtkCommonDataModel import (
vtkDataObject,
vtkPolyData,
)
from vtkmodules.vtkCommonExecutionModel import vtkStreamingDemandDrivenPipeline
from vtkmodules.vtkCommonTransforms import vtkTransform
from vtkmodules.vtkFiltersGeneral import (
vtkGroupTimeStepsFilter,
vtkTransformPolyDataFilter,
)
from vtkmodules.vtkFiltersSources import (
vtkPartitionedDataSetCollectionSource,
vtkSphereSource,
)
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkCompositePolyDataMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.util.vtkAlgorithm import VTKPythonAlgorithmBase
class MovingSphereSource(VTKPythonAlgorithmBase):
def __init__(self):
VTKPythonAlgorithmBase.__init__(self,
nInputPorts=0,
nOutputPorts=1, outputType='vtkPolyData')
def RequestInformation(self, request, inInfo, outInfo):
info = outInfo.GetInformationObject(0)
t = range(0, 10)
info.Set(vtkStreamingDemandDrivenPipeline.TIME_STEPS(), t, len(t))
info.Set(vtkStreamingDemandDrivenPipeline.TIME_RANGE(), [t[0], t[-1]], 2)
return 1
def RequestData(self, request, inInfo, outInfo):
info = outInfo.GetInformationObject(0)
output = vtkPolyData.GetData(outInfo)
t = info.Get(vtkStreamingDemandDrivenPipeline.UPDATE_TIME_STEP())
sphere = vtkSphereSource()
sphere.SetCenter(0, t * 2, 0)
sphere.Update()
output.ShallowCopy(sphere.GetOutput())
return 1
class MovingPDC(VTKPythonAlgorithmBase):
def __init__(self):
VTKPythonAlgorithmBase.__init__(self,
nInputPorts=0,
nOutputPorts=1, outputType='vtkPartitionedDataSetCollection')
def RequestInformation(self, request, inInfo, outInfo):
info = outInfo.GetInformationObject(0)
t = range(0, 10)
info.Set(vtkStreamingDemandDrivenPipeline.TIME_STEPS(), t, len(t))
info.Set(vtkStreamingDemandDrivenPipeline.TIME_RANGE(), [t[0], t[-1]], 2)
return 1
def RequestData(self, request, inInfo, outInfo):
info = outInfo.GetInformationObject(0)
output = vtkDataObject.GetData(outInfo)
t = info.Get(vtkStreamingDemandDrivenPipeline.UPDATE_TIME_STEP())
source = vtkPartitionedDataSetCollectionSource()
source.SetNumberOfShapes(int(1 + t % 3))
transform = vtkTransform()
transform.Identity()
transform.Translate(2, t*2, 0)
xform = vtkTransformPolyDataFilter()
xform.SetTransform(transform)
xform.SetInputConnection(source.GetOutputPort())
xform.Update()
output.ShallowCopy(xform.GetOutputDataObject(0))
return 1
source1 = MovingSphereSource()
group1 = vtkGroupTimeStepsFilter()
group1.SetInputConnection(source1.GetOutputPort())
mapper1 = vtkCompositePolyDataMapper()
mapper1.SetInputConnection(group1.GetOutputPort())
actor1 = vtkActor()
actor1.SetMapper(mapper1)
source2 = MovingPDC()
group2 = vtkGroupTimeStepsFilter()
group2.SetInputConnection(source2.GetOutputPort())
mapper2 = vtkCompositePolyDataMapper()
mapper2.SetInputConnection(group2.GetOutputPort())
actor2 = vtkActor()
actor2.SetMapper(mapper2)
ren1 = vtkRenderer()
renWin = vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
ren1.AddActor(actor1)
ren1.AddActor(actor2)
ren1.ResetCamera()
renWin.SetSize(300, 300)
renWin.Render()
# render the image
#
iren.Initialize()
# iren.Start()
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