RE: [Algorithms] portal engines in outdoor environments

[John R. <jra...@ve...>]

>at large polygon walls. The eye-to-vertex algorithm tells me the wall is
not
>visible because I can't see its vertices. I don't know what to do about it
>yet. Any ideas?

Send more rays.  For large polygons tesselate them down to some minimum
threshold size and send rays to them.

John