Re: [Algorithms] Bezier Triangle Rendering

[Dave E. <eb...@ma...>]

----- Original Message ----- 
From: "Dave Smith" <Dav...@sd...>
To: <gda...@li...>
Sent: Wednesday, August 16, 2000 11:06 AM
Subject: [Algorithms] Bezier Triangle Rendering


> I can compute points on a Bezier Triangle,
> but I'm having a tough time coming up with
> a good tessellator for it.  Are there any
> references that has a demonstration of this?
> 
> I'm currently looking at fixed subdivision for 
> the quadratic case, but because its not bi-quadratic 
> in the square sense, like bezier patches, it's harder 
> to come up with an easy algo for producing the parameter
> space points.
> 
> Any ideas or pointers would be much appreciated,

I have source code for tessellation by recursive subdivision
of quadratic or cubic Bezier triangles, rectangles, or
cylinders at http://www.magic-software.com/MgcSurface.html 

--
Dave Eberly
eb...@ma...
http://www.magic-software.com