vtk类之vtkLineSource：用2点来创建线的poly data

vtkLineSource 通过两点(x, y, z) 来创建一条线的poly data。

基本方法：

　　SetPoint1，SetPoint2设置先的2个端点。

virtual void	SetPoint1 (double, double, double)
virtual void	SetPoint1 (double[3])
virtual double *	GetPoint1 ()
virtual void	GetPoint1 (double data[3])


virtual void	SetPoint2 (double, double, double)
virtual void	SetPoint2 (double[3])

例子：

#-*- coding: UTF-8 -*-
#-------------------------------------------------------------------------------
# Name:        lineActorFactory2 package
# Purpose:     通过两个点，创建一条直线
#
# Author:      ankier
#
# Created:     08-12-2012
# Copyright:   (c) ankier 2012
# Licence:     <your licence>
#-------------------------------------------------------------------------------

from ActorFactory import ActorFactory 
from vtk import *

## @brief 直线的actor factory
class LineActorFactory2(ActorFactory):
    def __init__(self):
        ActorFactory.__init__(self)
        self.__LineSource = vtkLineSource()
       
    def __del__(self):
        del self.__LineSource
    
    ## @brief 更新线的poly data
    def __UpdateData(self):
        self.__LineSource.SetPoint1(0, 0, 0)
        self.__LineSource.SetPoint2(100, 200, 300)
        self.__LineSource.SetResolution(10)
    
    ## @brief 重写基类方法
    #  see    ActorFactory._MakeActors
    def _MakeActors(self): 
        self.__UpdateData()       
        polyDataMapper = vtkPolyDataMapper()
        polyDataMapper.SetInputConnection(self.__LineSource.GetOutputPort())
        actor = self._NewActor()
        actor.SetMapper(polyDataMapper)
        actor.GetProperty().SetColor((1, 0, 0.3))
        del polyDataMapper
        return [actor]

运行效果图：

vtk类之vtkLineSource：用2点来创建线的poly data