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cutter.py
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cutter.py
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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import sys
import os.path
from PyQt4 import QtCore, QtGui
QtCore.Signal = QtCore.pyqtSignal
import vtk
from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
class VTKFrame(QtGui.QFrame):
def __init__(self, parent = None):
super(VTKFrame, self).__init__(parent)
self.vtkWidget = QVTKRenderWindowInteractor(self)
vl = QtGui.QVBoxLayout(self)
vl.addWidget(self.vtkWidget)
vl.setContentsMargins(0, 0, 0, 0)
self.ren = vtk.vtkRenderer()
self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
#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(1,0,0)
#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
self.ren.AddActor(planeActor)
self.ren.AddActor(cubeActor)
self.ren.ResetCamera()
self._initialized = False
def showEvent(self, evt):
if not self._initialized:
self.iren.Initialize()
self.startTimer(30)
self._initialized = True
def timerEvent(self, evt):
self.ren.GetActiveCamera().Azimuth(1)
self.vtkWidget.GetRenderWindow().Render()
class MainPage(QtGui.QMainWindow):
def __init__(self, parent = None):
super(MainPage, self).__init__(parent)
self.setCentralWidget(VTKFrame())
self.setWindowTitle("Simple cut example")
def categories(self):
return ['Cutter']
def mainClasses(self):
return ['vtkCubeSource', 'vtkPlane', 'vtkCutter']
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
w = MainPage()
w.show()
sys.exit(app.exec_())