Quadratic surfaces in general are represented implicitly as a solution
to a quadratic equation, so if you want to generate a mesh from a
generic quadratic equation you will either need to resort to an implicit
surface generation algorithm such as Marching Cubes, or find some clever
way of parameterizing the surface (anyone?). For specific quadric
surfaces such as ellipsoids, cones, cylinders you can straightforwardly
derive a parametric representation. Code for generating meshes for these
surface types is widely available. For instance, check out the
quadric.c in the OpenGL sample implementation
(http://oss.sgi.com/projects/ogl-sample/) or OpenSceneGraph
(http://www.openscenegraph.org/projects/osg).
Gino
On 6-1-2010 5:07, Tom Sparks wrote:
> Quadric surfaces how do I convert them to polygons meshes?
>
> tom_a_sparks
>
>
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