🚀 go-pugleaf

Hi,


	A few friends an I have been drooling over the latest release of the Unreal demo that Future Crew, as well as their release of the Fishtro Demo.  And quite frankly, these guys are impressive.

If any of you have seen Fishtro, I have worked out how to do the exploding letters bit quite well, although not quite as well as theirs.

What I would like to know is how the hell the can do the World Vector part of the demo.  Its the rotation see, that gets me.  Sure, sure there are algorithms evvery where that can rotate.  No problem there

But how do you do it FAST!

I can do it using look up sin and cos tables, but even then its not THAT quick.

I don't have algorithms for rotating the viewers point, only other objects.

Here are a few questions.

1.) Does one rotate all points or is there a spify alogrithm that can do them all real quick based on one rotation.

2.)How does one incorporate the rotation of the viewers view point in the calcultion.

3.) How do they (or any one else) determine the shading for the different polyogns based on a light source.

and last, and most importantly

4.) How the hell is it done so quickly!

If you haven't seen Unreal, and you have the means (a 486 is REAL handy, as well as a Sound Blaster Pro, music's great), then I suggest you get it, and have a gander.

Thanks in advance.

And sorry if I'm posting it in the wron ara.

regards
Paul Smith
psmith@esk.compserv.utas.edu.au