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scott <sco### [at] scott com> wrote:
> That's only to render quickly though, internally all surfaces are stored as
> mathematical descriptions. In theory you could write a raytracer to render
> these surface descriptions directly with no tesselation. In fact, if you
> create a shape with rounded edges in a CAD program, you can export it to a
> common interchange format (STEP) which is plain text. In that you will see
> that the solid is completely defined by mathematical curves and surfaces, no
> tesselation.
That doesn't change the fact that the CAD software tesselates the surface
before rendering it. Or have you seen one which doesn't?
--
- Warp
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