[X3D-Public] Quadric surface

[Alexei Sourin (Assoc Prof)]

You can also use FVRML or FX3D function-based extension to directly write an equation of your surface.

http://www3.ntu.edu.sg/home/assourin/FVRML.htm


Best Regards,
Alexei Sourin

-----Original Message-----
From: x3d-public-bounces at web3d.org [mailto:x3d-public-bounces at web3d.org] On Behalf Of Alan Hudson
Sent: Thursday, January 07, 2010 11:16 AM
To: Tom Sparks
Cc: X3D Graphics public mailing list
Subject: Re: [X3D-Public] Quadric surface

Tom Sparks wrote:
> Has anyone done a Quadric surface in X3D?
>
> How can I do a Quadric surface in X3D without using NURBS?
>
> tom_a_sparks
>
>
calculate points on the surface and use an indexedfaceset to tesselate it.  You also approximate it by calculating gridded spot heights and filling in an elevationgrid with the calculated values.


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