一个简单的读取vtkpolydata的入门程序-A simple reading vtkpolydata entry procedures

标准的vtk绘制“积木”（多边形）的例子，可以设置各项数据的属性-Standard vtk drawing the example of the " building blocks" (the polygons), you can set the properties of the various data

创建一个 vtkPolyData 数据，显示为三角形(Create a vtkPolyData data and display it as a triangle)