Skandha4 and Slisp
Although we continue to use Skandha4 for a few demos,
it is no longer under active development. Its functionality has
been superseded by various other projects, especially
MindSeer, a 3D Visualization tool written
Skandha4 was used to develop a number of SIG projects, including
the Brain Visualizer
and the Dynamic Scene Generator.
Skandha4 is "an emacs for 3D graphics"-- a portable shaded-polygon
graphics extension to the Slisp toolkit which provides a variety of
pre-built facilities on which specialized graphics applications may be
quickly built. These facilities include a flexible relational
datastructure for geometry which may be easily extended to add
application-specific information, a pointwise arithmetic sublanguage
over these relations, picking and animation support, a (truly!) 3D
widget library, and a growing collection of primitives for such things
as voxel and image processing.
If you're new to the Skandha world, it's easy to confuse four related
programs (Skandha4, Skandha3, Slisp, and Xlisp). Here's how they
- Skandha4 is the 3D graphics extension of...
- Slisp, a hybrid C/Lisp programming environment, which extends...
- Xlisp, a small Lisp interpreter written in portable C by
- Skandha3 is a separate program for reconstructing
and visualizing 3D organs from serial sections. (Skandha4 can
emulate much of Skandha3's functionality, but not its
Around the lab, if someone refers to "Skandha" (with no number), they
generally mean Skandha4.
Skandha4's graphics functionality was originally developed using GL on
Silicon Graphics hardware. In 1999, Jeff made some major revisions,
adding Open GL drivers so that the program could be compiled and run
Skandha4 was developed primarily by Jeff Prothero, based on David
Betz's Xlisp. Additional development has been done by Andrew
Poliakov, Kevin Hinshaw, Ben Wong, and Jim Brinkley.
Check the Skandha4 downloads page.
J. F. Brinkley and J. S. Prothero, "Slisp: A flexible software toolkit
for hybrid, embedded and distributed applications," Software --
Practice and Experience, vol. 27, pp. 33-48, 1997.
J. S. Prothero, "Skandha4: An Slisp-based Interactive Raster Graphics
Toolkit," technical report draft, 1995.
Last modified: Thu Feb 6 14:22:27 PST 2003 by Kevin Hinshaw (khinshaw (at) u.washington.edu)