Lighting issues with Cut function

[eventhorizon5]

It appears that the Cut function, which creates sets of polygons with a single texture mapped across them, doesn't work properly with dynamic lighting.

Using polygon sets:

Using individually-mapped polygons (three AddFloor commands) without cut function:

I've been trying to see if I can remake the Cut functionality to create individual polygons instead of sets, or try to fix the reason why the sets don't work properly.

[eventhorizon5]

I found out that manually making the polygons does the same thing, it's not just the Cut function. In the demo photos I was making three polygons of the same size, and so it worked, when the middle polygon is smaller, the first photo is what happens.

[eventhorizon5]

This issue has been fixed, had to do with polygon normals not being calculated properly.