收缩构成一个任意的数据集的单元格

vtkShrinkFilter 收缩构成对其质心任意数据集的单元格。单元格点的平均位置作为计算单元的质心。萎缩中断开另一个单元格的结果。此筛选器的输出是的一般数据集类型 vtkUnstructuredGrid。

警告：

它是可能打开细胞里面翻出来，或在特殊情况下造成自我交集。

例子：

#-*- coding: UTF-8 -*-#-------------------------------------------------------------------------------# Name:        模块2# Purpose:## Author:      ankier## Created:     18-12-2012# Copyright:   (c) Administrator 2012# Licence:     
      
       #-------------------------------------------------------------------------------from ActorFactory import ActorFactoryfrom vtk import *## @detal class TransformActorFactory(ActorFactory):    def __init__(self):        ActorFactory.__init__(self)                self.__ElevationFilter = vtkElevationFilter()                   self.__ElevationFilter.SetLowPoint(0, 0, -0.5)        self.__ElevationFilter.SetHighPoint(0, 0, 0.5)                 def _MakeActors(self):        sphere = vtkSphereSource()        sphere.SetThetaResolution(8)        sphere.SetPhiResolution(8)        sphere.SetRadius(20)        transform = vtkTransform()        transform.Scale(0.5, 1.5, 2.0)        transformFilter = vtkTransformFilter()        transformFilter.SetInput(sphere.GetOutput())        transformFilter.SetTransform(transform)                shrinkFilter = vtkShrinkFilter()        shrinkFilter.SetInput(transformFilter.GetOutput())        shrinkFilter.SetShrinkFactor(0.8)                self.__ElevationFilter.SetInput(shrinkFilter.GetOutput())                dataSetMapper = vtkDataSetMapper()        dataSetMapper.SetInput(self.__ElevationFilter.GetOutput())        actor = self._NewActor()        actor.SetMapper(dataSetMapper)        #actor.GetProperty().SetColor((0.5, 0.7, 0.2))                return [actor]        def __del__(self):        del self.__EarthSource
      

运行结果：