vtk类之vtkTexturedSphereSource ：创建一个球体的poly data

vtkTexturedSphereSource创建一个中心点在原点球体的。在两个（φ）的纬度和经度（θ）方向上，可以分别设定分辨率（多边形离散化）。它也可以通过指定部分领域最大φ和θ波的角度，创建半球体。

基本方法：

SetRadius(20) 设置球体直径
SetThetaResolution(40) 设置维度上的分辨率
SetPhiResolution(40)设置经度上的分辨率
SetTheta(100)设置最大的经度角
SetPhi(10)设置最大的维度角

例子：

#-*- coding: UTF-8 -*-
#-------------------------------------------------------------------------------
# Name:        模块2
# Purpose:
#
# Author:      ankier
#
# Created:     12-12-2012
# Copyright:   (c) Ankier 2012
# Licence:     <your licence>
#-------------------------------------------------------------------------------

from ActorFactory import ActorFactory

from vtk import *
## @detal 创建球体的actory factory
class TexturedSphereActorFactory(ActorFactory):
    def __init__(self):
        ActorFactory.__init__(self)        
        self.__TexturedSphereSource = vtkTexturedSphereSource()        
        
    def _MakeActors(self):
        self.__TexturedSphereSource.SetRadius(20) 
        self.__TexturedSphereSource.SetThetaResolution(40)    
        self.__TexturedSphereSource.SetPhiResolution(40)
        self.__TexturedSphereSource.SetTheta(100)
        self.__TexturedSphereSource.SetPhi(10)
        
        
        polyDataMapper = vtkPolyDataMapper()
        polyDataMapper.SetInput(self.__TexturedSphereSource.GetOutput())
        
        actor = self._NewActor()
        actor.SetMapper(polyDataMapper)
        actor.GetProperty().SetColor((1.0, 0.7, 0.2))
        actor.SetPosition(-27.0, 0, 0)
        
        return [actor]
    
    def __del__(self):
        del self.__TexturedSphereSource

运行效果图：