"I actually don't know. It could be that DrawObject simply takes all its colour cues from the object attributes and there's no way for you to override it. Or maybe there's a way to set some overrides on the pipeline? I think…"
"You have to override the ClippingBox property and return a BoundingBox object which is big enough (though ideally not unnecessarily big) to contain all the preview geometry you wish to draw.
The clipping box is required by OpenGL to set up the near…"
"The only difference is that the loop time can be changed,if your computer hardware is very good and run fast,you can set the loop interval by 0.001s otherwise setting by such as 1s in case of your computer crashed!
As to the cluster,if you…"