What does this term mean?? And what is the differance between these and concave polyhedra. Thanks alot for the previous replies to other thrieds ~Steve~

Hmmm... There is some rule for concave polys... sorta like you can always draw a line from one
vertex to another, without it going out of the polygon... Something like that at least. The main
difference is that concex polys have little ''caves'' in them (think of a square as a normal square
with all four vertices spaced evenly... Thats concave, now most one vertex to the middle of the
square... thats convex).

NARF!

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Trent (ShiningKnight)
E-mail me
OpenGL Game Programming Tutorials

A polygon is convex if a straight line drawn anywhere across it cuts through two, and only two, sides or edges.

Convex is where this case doesn't hold.

Convex polyhedra have many properties that make them fast for rendering. GL_POLYGON can only take convex polygons, as working out concave ones can be very time consuming, think a square with a hole in it and you'll get the idea

FatalXC


Edited by - FatalXC on July 13, 2001 1:03:26 AM

Edited by - FatalXC on July 13, 2001 1:04:44 AM

Hey thanks for the help!!

~Steve~