Polyvis is a maxscript utility intended to help artist determin what polygons on certain objects are visable to a particular camera during animation of that camera/objects. The utility is especially intended to determin what polygons are visable on weapons in FPS games...
This is a beta version and because of that the author of this utitily does not take responsability for any damage using this utility may cause to the users data - hardware - software or mental state.
If at some point during the analyze procedure the script would be unable to continue the viewports may become locked. This is because Polyvis turns them off to speed up the process and when its unable to finish the job could not turn them on again. You can then manually turn them on by opening the Maxscript Listner (F11 by default) and executing this command: enableSceneRedraw() Or by restarting 3dsmax.
There may be some degenerative behavior when using subdivision sampling on faces or when working with very long animations that can eventually cause the computer to lock up so when doing either of these observe the computer. If you see anything strange going on simply exit the calculations by holding down the 'ESC' key.
As always with beta software you should save you works before you start working with the utility.