activiz.net 显示圆柱体

来源：互联网发布：天尚网络机顶盒遥控器编辑：程序博客网时间：2024/05/19 19:32

简介

activiz.net是VTK的C#版本，可以很方便地进行三维绘制等操作

问题

显示圆柱体时，activiz.net的vtkCylinderSource只能显示沿着y轴方向的圆柱体，方向不能修改，如下图的圆柱体

生成这个圆柱体的vtkActor的代码如下

vtkCylinderSource cs = vtkCylinderSource.New();cs.SetCenter(0, 0, height/2);cs.SetRadius(radius);cs.SetHeight(height);cs.SetCapping(0);cs.SetResolution(50);vtkPolyDataMapper dm = vtkPolyDataMapper.New();dm.SetInputConnection( cs.GetOutputPort() );vtkActor a2 = vtkActor.New();a2.SetMapper(dm);vtkProperty pp = vtkProperty.New();pp.SetOpacity(0.5);pp.SetColor(0, 1, 1);pp.SetLighting(false);a2.SetProperty( pp );

解决方案

已经知道了圆柱长轴的两个端点，可以结合vtkLineSource和vtkTubeFilter来生成具有方向性的圆柱体。结果图如下

生成对应的vtkActor的代码如下

vtkLineSource ls = vtkLineSource.New();ls.SetPoint1( 0, 0, 0 );ls.SetPoint2(0, 0, height);vtkTubeFilter tf = vtkTubeFilter.New();tf.SetInputConnection( ls.GetOutputPort() );tf.SetRadius( radius );tf.SetNumberOfSides( 100 );tf.CappingOff();vtkPolyDataMapper dm = vtkPolyDataMapper.New();dm.SetInputConnection( tf.GetOutputPort() );vtkActor a2 = vtkActor.New();a2.SetMapper(dm);vtkProperty pp = vtkProperty.New();pp.SetOpacity(0.5);pp.SetColor(0, 1, 1);pp.SetLighting(false);a2.SetProperty( pp );

参考链接

http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/Cylinder
http://blog.csdn.net/menjiawan/article/details/45217707

0 0