newell's teapot

system · February 23, 2001, 12:30pm

Hi,
i’m trying to write a ray tracer in openGL, and i was wondering if anyone here can post a link to a triangle data file for newell’s teapot.

thanks in advance.
Dan

msteinberg · February 24, 2001, 8:53am

So you want to program a raytracer in opengl? How is that done?

system · February 24, 2001, 2:46pm

well, it doesn’t really have to be in opengl, but i needed a way to output images pixel by pixel onto the screen. opengl’s prolly the best and easiest way to do so, with glDrawPixel.

as for the ray tracing, just plug in the equations to intersect spheres and triangles, apply the lighting formulae, and you got yourself a ray traced image.

i just need a model to ray trace, but i’m dont know much on how 3d model formats are stored, so i was hoping for a raw data file of surface triangle vertices…

otherwise, if anyone can post links to how to parse popular 3d model file formats, i’d appreciate that too.

Dan

system · February 25, 2001, 9:46pm

Have a look at Steve Baker’s Teapot FAQ

     -Jason

msteinberg · February 26, 2001, 3:29am

After all, ATI has a contributor here!!! Cool.

Hi Jason…

Relic · February 26, 2001, 4:12am

The Bezier patches data is freely available in the glut_teapot.c source code of the GLUT library implementation.

system · February 26, 2001, 9:24pm

>After all, ATI has a contributor here!!! Cool.

I’m not the only one. Dave Gosselin and Dan Ginsburg are here as well.

         -Jason

msteinberg · February 27, 2001, 6:18am

And somebody on the advanced board stated ati would have bad service.