[comp.graphics] Cone-tracing ellipsoids

zhu@.philips.com (Benjamin Zhu) (02/16/91)

Has anybody ever done cone-tracing ellipsoids of arbitrary
orientations? Reflections and refractions are ignored here.
My current implementation involves transforming an ellipsoid
into a sphere, and subsequently transforming the viewing
coordinates. Since there might be many ellipsoids in the
scenes, I am curious if other alternatives are more efficient.
Any comment is greatly appreciated.

Benjamin
zhu@philabs.philips.com