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#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.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
vtk.vtkNamedColors().GetColorRGB(colorName, rgb)
return rgb
# define a Single Cube
Scalars = vtk.vtkFloatArray()
Scalars.InsertNextValue(1.0)
Scalars.InsertNextValue(0.0)
Scalars.InsertNextValue(0.0)
Scalars.InsertNextValue(0.0)
Scalars.InsertNextValue(0.0)
Scalars.InsertNextValue(0.0)
Points = vtk.vtkPoints()
Points.InsertNextPoint(0, 0, 0)
Points.InsertNextPoint(1, 0, 0)
Points.InsertNextPoint(1, 1, 0)
Points.InsertNextPoint(0, 1, 0)
Points.InsertNextPoint(.5, .5, 1)
Ids = vtk.vtkIdList()
Ids.InsertNextId(0)
Ids.InsertNextId(1)
Ids.InsertNextId(2)
Ids.InsertNextId(3)
Ids.InsertNextId(4)
Grid = vtk.vtkUnstructuredGrid()
Grid.Allocate(10, 10)
Grid.InsertNextCell(14, Ids)
Grid.SetPoints(Points)
Grid.GetPointData().SetScalars(Scalars)
# Clip the pyramid
clipper = vtk.vtkClipDataSet()
clipper.SetInputData(Grid)
clipper.SetValue(0.5)
# build tubes for the triangle edges
#
pyrEdges = vtk.vtkExtractEdges()
pyrEdges.SetInputConnection(clipper.GetOutputPort())
pyrEdgeTubes = vtk.vtkTubeFilter()
pyrEdgeTubes.SetInputConnection(pyrEdges.GetOutputPort())
pyrEdgeTubes.SetRadius(.005)
pyrEdgeTubes.SetNumberOfSides(6)
pyrEdgeMapper = vtk.vtkPolyDataMapper()
pyrEdgeMapper.SetInputConnection(pyrEdgeTubes.GetOutputPort())
pyrEdgeMapper.ScalarVisibilityOff()
pyrEdgeActor = vtk.vtkActor()
pyrEdgeActor.SetMapper(pyrEdgeMapper)
pyrEdgeActor.GetProperty().SetDiffuseColor(GetRGBColor('lamp_black'))
pyrEdgeActor.GetProperty().SetSpecular(.4)
pyrEdgeActor.GetProperty().SetSpecularPower(10)
# shrink the triangles so we can see each one
aShrinker = vtk.vtkShrinkFilter()
aShrinker.SetShrinkFactor(1)
aShrinker.SetInputConnection(clipper.GetOutputPort())
aMapper = vtk.vtkDataSetMapper()
aMapper.ScalarVisibilityOff()
aMapper.SetInputConnection(aShrinker.GetOutputPort())
Pyrs = vtk.vtkActor()
Pyrs.SetMapper(aMapper)
Pyrs.GetProperty().SetDiffuseColor(GetRGBColor('banana'))
# build a model of the pyramid
Edges = vtk.vtkExtractEdges()
Edges.SetInputData(Grid)
Tubes = vtk.vtkTubeFilter()
Tubes.SetInputConnection(Edges.GetOutputPort())
Tubes.SetRadius(.01)
Tubes.SetNumberOfSides(6)
TubeMapper = vtk.vtkPolyDataMapper()
TubeMapper.SetInputConnection(Tubes.GetOutputPort())
TubeMapper.ScalarVisibilityOff()
CubeEdges = vtk.vtkActor()
CubeEdges.SetMapper(TubeMapper)
CubeEdges.GetProperty().SetDiffuseColor(GetRGBColor('khaki'))
CubeEdges.GetProperty().SetSpecular(.4)
CubeEdges.GetProperty().SetSpecularPower(10)
# build the vertices of the pyramid
#
Sphere = vtk.vtkSphereSource()
Sphere.SetRadius(0.04)
Sphere.SetPhiResolution(20)
Sphere.SetThetaResolution(20)
ThresholdIn = vtk.vtkThresholdPoints()
ThresholdIn.SetInputData(Grid)
ThresholdIn.ThresholdByUpper(.5)
Vertices = vtk.vtkGlyph3D()
Vertices.SetInputConnection(ThresholdIn.GetOutputPort())
Vertices.SetSourceConnection(Sphere.GetOutputPort())
SphereMapper = vtk.vtkPolyDataMapper()
SphereMapper.SetInputConnection(Vertices.GetOutputPort())
SphereMapper.ScalarVisibilityOff()
CubeVertices = vtk.vtkActor()
CubeVertices.SetMapper(SphereMapper)
CubeVertices.GetProperty().SetDiffuseColor(GetRGBColor('tomato'))
# define the text for the labels
caseLabel = vtk.vtkVectorText()
caseLabel.SetText("Case 1")
aLabelTransform = vtk.vtkTransform()
aLabelTransform.Identity()
aLabelTransform.Translate(-.2, 0, 1.25)
aLabelTransform.Scale(.05, .05, .05)
labelTransform = vtk.vtkTransformPolyDataFilter()
labelTransform.SetTransform(aLabelTransform)
labelTransform.SetInputConnection(caseLabel.GetOutputPort())
labelMapper = vtk.vtkPolyDataMapper()
labelMapper.SetInputConnection(labelTransform.GetOutputPort())
labelActor = vtk.vtkActor()
labelActor.SetMapper(labelMapper)
# define the base
baseModel = vtk.vtkCubeSource()
baseModel.SetXLength(1.5)
baseModel.SetYLength(.01)
baseModel.SetZLength(1.5)
baseMapper = vtk.vtkPolyDataMapper()
baseMapper.SetInputConnection(baseModel.GetOutputPort())
base = vtk.vtkActor()
base.SetMapper(baseMapper)
# Create the RenderWindow, Renderer and both Actors
#
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# position the base
base.SetPosition(.5, -.09, .5)
ren1.AddActor(pyrEdgeActor)
ren1.AddActor(base)
ren1.AddActor(labelActor)
ren1.AddActor(CubeEdges)
ren1.AddActor(CubeVertices)
ren1.AddActor(Pyrs)
ren1.SetBackground(GetRGBColor('slate_grey'))
renWin.SetSize(400, 400)
ren1.ResetCamera()
ren1.GetActiveCamera().Dolly(1.3)
ren1.GetActiveCamera().Elevation(15)
ren1.ResetCameraClippingRange()
renWin.Render()
iren.Initialize()
def cases (id, mask):
i = 0
while i < 5:
m = mask[i]
if m & id == 0:
Scalars.SetValue(i, 0)
pass
else:
Scalars.SetValue(i, 1)
pass
caseLabel.SetText("Case " + str(id))
i += 1
Grid.Modified()
renWin.Render()
mask = [1, 2, 4, 8, 16, 32]
cases(20, mask)
# iren.Start()
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