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#!/usr/bin/env python
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkCommonDataModel import vtkPlane
from vtkmodules.vtkCommonExecutionModel import vtkCastToConcrete
from vtkmodules.vtkFiltersCore import (
vtkContourFilter,
vtkCutter,
vtkPolyDataNormals,
vtkTubeFilter,
)
from vtkmodules.vtkFiltersFlowPaths import vtkStreamTracer
from vtkmodules.vtkFiltersGeneral import vtkWarpVector
from vtkmodules.vtkFiltersGeometry import vtkRectilinearGridGeometryFilter
from vtkmodules.vtkFiltersModeling import vtkOutlineFilter
from vtkmodules.vtkIOLegacy import vtkDataSetReader
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkDataSetMapper,
vtkPolyDataMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
def GetRGBColor(colorName):
'''
Return the red, green and blue components for a
color as doubles.
'''
rgb = [0.0, 0.0, 0.0] # black
vtkNamedColors().GetColorRGB(colorName, rgb)
return rgb
VTK_VARY_RADIUS_BY_VECTOR = 2
# create pipeline
#
reader = vtkDataSetReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/RectGrid2.vtk")
reader.Update()
toRectilinearGrid = vtkCastToConcrete()
toRectilinearGrid.SetInputConnection(reader.GetOutputPort())
toRectilinearGrid.Update()
plane = vtkRectilinearGridGeometryFilter()
plane.SetInputData(toRectilinearGrid.GetRectilinearGridOutput())
plane.SetExtent(0, 100, 0, 100, 15, 15)
warper = vtkWarpVector()
warper.SetInputConnection(plane.GetOutputPort())
warper.SetScaleFactor(0.05)
planeMapper = vtkDataSetMapper()
planeMapper.SetInputConnection(warper.GetOutputPort())
planeMapper.SetScalarRange(0.197813, 0.710419)
planeActor = vtkActor()
planeActor.SetMapper(planeMapper)
cutPlane = vtkPlane()
cutPlane.SetOrigin(reader.GetOutput().GetCenter())
cutPlane.SetNormal(1, 0, 0)
planeCut = vtkCutter()
planeCut.SetInputData(toRectilinearGrid.GetRectilinearGridOutput())
planeCut.SetCutFunction(cutPlane)
cutMapper = vtkDataSetMapper()
cutMapper.SetInputConnection(planeCut.GetOutputPort())
cutMapper.SetScalarRange(
reader.GetOutput().GetPointData().GetScalars().GetRange())
cutActor = vtkActor()
cutActor.SetMapper(cutMapper)
iso = vtkContourFilter()
iso.SetInputData(toRectilinearGrid.GetRectilinearGridOutput())
iso.SetValue(0, 0.7)
normals = vtkPolyDataNormals()
normals.SetInputConnection(iso.GetOutputPort())
normals.SetFeatureAngle(45)
isoMapper = vtkPolyDataMapper()
isoMapper.SetInputConnection(normals.GetOutputPort())
isoMapper.ScalarVisibilityOff()
isoActor = vtkActor()
isoActor.SetMapper(isoMapper)
isoActor.GetProperty().SetColor(GetRGBColor('bisque'))
isoActor.GetProperty().SetRepresentationToWireframe()
streamer = vtkStreamTracer()
streamer.SetInputConnection(reader.GetOutputPort())
streamer.SetStartPosition(-1.2, -0.1, 1.3)
streamer.SetMaximumPropagation(500)
streamer.SetInitialIntegrationStep(0.05)
streamer.SetIntegrationDirectionToBoth()
streamTube = vtkTubeFilter()
streamTube.SetInputConnection(streamer.GetOutputPort())
streamTube.SetRadius(0.025)
streamTube.SetNumberOfSides(6)
streamTube.SetVaryRadius(VTK_VARY_RADIUS_BY_VECTOR)
mapStreamTube = vtkPolyDataMapper()
mapStreamTube.SetInputConnection(streamTube.GetOutputPort())
mapStreamTube.SetScalarRange(
reader.GetOutput().GetPointData().GetScalars().GetRange())
streamTubeActor = vtkActor()
streamTubeActor.SetMapper(mapStreamTube)
streamTubeActor.GetProperty().BackfaceCullingOn()
outline = vtkOutlineFilter()
outline.SetInputData(toRectilinearGrid.GetRectilinearGridOutput())
outlineMapper = vtkPolyDataMapper()
outlineMapper.SetInputConnection(outline.GetOutputPort())
outlineActor = vtkActor()
outlineActor.SetMapper(outlineMapper)
outlineActor.GetProperty().SetColor(GetRGBColor('black'))
# Graphics stuff
# Create the RenderWindow, Renderer and both Actors
#
ren1 = vtkRenderer()
renWin = vtkRenderWindow()
renWin.SetMultiSamples(0)
renWin.AddRenderer(ren1)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(outlineActor)
ren1.AddActor(planeActor)
ren1.AddActor(cutActor)
ren1.AddActor(isoActor)
ren1.AddActor(streamTubeActor)
ren1.SetBackground(1, 1, 1)
renWin.SetSize(400, 400)
cam1 = ren1.GetActiveCamera()
cam1.SetClippingRange(3.76213, 10.712)
cam1.SetFocalPoint(-0.0842503, -0.136905, 0.610234)
cam1.SetPosition(2.53813, 2.2678, -5.22172)
cam1.SetViewUp(-0.241047, 0.930635, 0.275343)
iren.Initialize()
#iren.Start()
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