How to reduce Moire pattern

I use vtkTubeFilter to build some tube models in the scene. When the camera is far from the model, I can see the Moire pattern.(picture 1) The model is built correctly. When the camera is near to it, it renders well.(picture 2). Is there any way to reduce or improve it. The scene uses default light. Thanks in advance.

picture 1:

picture 2:

This is something you can reduce with multisampling.
See vtkRenderWindow::SetMultiSamples