vtk类之vtkTextureMapToPlane：纹理映射算法， 映射2D平面上的纹理

产生映射点集合到2D平面表面的纹理坐标

vtkTextureMapToPlane是一个筛选器，将 2D 纹理坐标生成映射输入的纹理数据集点至一个2D平面上。范围可以是用户指定或自动生成的。(2D平面是由自动生成计算2D平面的中心 )。请注意生成的纹理坐标 (0，1) 之间的范围。 

实例：

#-*- coding: UTF-8 -*-
#-------------------------------------------------------------------------------
# Name:        模块2
# Purpose:
#
# Author:      ankier
#
# Created:     07-01-2013
# Copyright:   (c) Ankier 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------

from ActorFactory import ActorFactory
from vtk import *

class TextureMapToPlaneActorFactory(ActorFactory):
    def __init__(self):
        ActorFactory.__init__(self)
        #定义一块板子
        self.__PlaneSource = vtkPlaneSource()
        self.__PlaneSource.SetOrigin(-50, -50, 0)
        self.__PlaneSource.SetPoint1(50, -50 , 0)
        self.__PlaneSource.SetPoint2(-50 , 50 , 0) 
        self.__PlaneSource.SetXResolution(50)
        self.__PlaneSource.SetYResolution(50)
        
        #设置板子的纹理映射类
        self.__TexturePlane= vtkTextureMapToPlane()
        self.__TexturePlane.SetInput(self.__PlaneSource.GetOutput())
        
        #设置纹理类。
        self.__Texture = vtkTexture()
        self.__Texture.InterpolateOn()
        
        #设置Poly Data，从纹理映射器重，得到被filter的输出数据
        self.__PolyDataMapper = vtkPolyDataMapper()
        self.__PolyDataMapper.SetInput(self.__TexturePlane.GetOutput())
    
    def __del__(self):
        del self.__PolyDataMapper
        del self.__Texture
        
    def __ReadJPEG(self):
        read = vtkJPEGReader()
        read.SetFileName("D:\\girl.jpg")
        self.__Texture.SetInput(read.GetOutput())
        
    def _MakeActors(self):
        self.__ReadJPEG()
        actor = self._NewActor()
        actor.SetMapper(self.__PolyDataMapper)
        actor.SetTexture(self.__Texture)
        return [actor]

运行结果：