Last edited 01may02 by firstname.lastname@example.org
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illiCombo: A interactive editor for homotopies of sliced surfaces.
There remains several sphere eversions that have not yet been
realized as real-time interactive computere animations (RTICA).
Two (technically related) of these are the Tony Phillips eversion
(Scientific American, 1966) which is the first published eversion,
and Bryce DeWitt (maybe non-) eversion. The latter was proposed
(but never "proved") in 1967 at the same Batelle conference which
spawned the Froissart-Morin eversion. Both eversions
are based on horizontal slices (plane curves) of a surface undergoing
a regular homotopy.
In 1992, Glenn Chappell and Chris Hartman began work on this project
with the completion of an IrisGL splined surface renderer, Philever.
In 1996, Stik Stiak translated the IrisGL program into OpenGL, using
the GLX-library. In 2001 Doug Nachand translated Philever into OpenGL
using the GLX-libraries which compiles on PC-platforms (Windows and
Linux.) He also built a GUI for drawing and editing the level curves
which define the surfaces. In 2002 he completed illiCombo, a combination
of Philever with his interactive curve editor.