vtkCutter.py

#!/usr/bin/env python
 
# A simple script to demonstrate the vtkCutter function
import vtk
 
#Create a cube
cube=vtk.vtkCubeSource()
cube.SetXLength(40)
cube.SetYLength(30)
cube.SetZLength(20)
cubeMapper=vtk.vtkPolyDataMapper()
cubeMapper.SetInputConnection(cube.GetOutputPort())
 
#create a plane to cut,here it cuts in the XZ direction (xz normal=(1,0,0);XY =(0,0,1),YZ =(0,1,0)
plane=vtk.vtkPlane()
plane.SetOrigin(10,0,0)
plane.SetNormal(1,2,0)
 
#create cutter
cutter=vtk.vtkCutter()
cutter.SetCutFunction(plane)
cutter.SetInputConnection(cube.GetOutputPort())
cutter.Update()
cutterMapper=vtk.vtkPolyDataMapper()
cutterMapper.SetInputConnection( cutter.GetOutputPort())
 
#create plane actor
planeActor=vtk.vtkActor()
planeActor.GetProperty().SetColor(1.0,1,0)
planeActor.GetProperty().SetLineWidth(2)
planeActor.SetMapper(cutterMapper)
 
#create cube actor
cubeActor=vtk.vtkActor()
cubeActor.GetProperty().SetColor(0.5,1,0.5)
cubeActor.GetProperty().SetOpacity(0.5)
cubeActor.SetMapper(cubeMapper)
 
#create renderers and add actors of plane and cube
ren = vtk.vtkRenderer()
ren.AddActor(planeActor)
ren.AddActor(cubeActor)
 
#Add renderer to renderwindow and render
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
renWin.SetSize(600, 600)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
ren.SetBackground(0,0,0)
renWin.Render()
iren.Start()