Re: [Plib-users] sgFrustum setting to the same as opengl

[Oliver B. <sh...@ih...>]

A stray old version of plib was sitting somewhere where it shouldnt
have been - I still get the wierdness even after that frustum code
so it cant be that ...  

I transform the "center" of each quad
then I put it into a new sphere with the required radius
then i test if its in the frustum

but when I turn around to face the origin they all dissapear
but come back if I roll upside down ...

I am transforming with the same matrix as given to opengl 
then subtracting the camera position as given to gltranslate

I cant see what im doing wrong :(

Oliver


On Wed, 10 May 2000, you wrote:
> oops sorry
> it is in there I looked in the header file ... so why it does that I
> dont know ..
> 
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