Xgrid v0.01a                                            10/3/95   quJohn Beale

This directory contains Xgrid v0.01a, which reads in a heightfield file and
displays it as a wireframe or shaded surface in an X window. It can read
PGM, GIF, TGA, POT, and MAT formats.  I suggest a 16 or 32-bit precision
format (eg not GIF, binary PGM) for the best-looking results, especially at
higher resolutions.

If you supply a filename on the command line, it will attempt to read in
that file, othewise it tries to read in "output.tga".  You can adjust the
viewing angle and shading parameters interactively. This program is designed
as a quick previewer for the heightfields generated by "gforge", prior to
final rendering by a better-quality package such as POV-Ray.

gforge:   http://www-leland.stanford.edu/~beale/land/gforge/
          http://jumpjibe.stanford.edu/gforge/
          ftp://ftp.yggdrasil.com/mirrors/sunsite/apps/graphics/rays/
          ....and many other places.

POV-Ray:  http://www.povray.org/
          ftp://ftp.povray.org/pub/povray/
          ...and many other places.