kind of like the xgl stuff. The debugging version can do
bounds checking and such.
-6/10/98 - problem with view culling when not looking forward. Need to
- generate the correct matrix and work it into the calculations.
-
6/10/98 - terrain generation - add an option to try to iteratively change
the error tolerance to try to generate "close" to a certain
number of vertices so that we can have consistent size, rendering