3DEM60 FREEWARE

3DEM will render 3D terrain scenes and MPEG flyby animations from
USGS Digital Elevation Model (DEM) files, USGS Global 30 Arc
Second Elevation Data Set (GTOPO30 DEM) files, NASA Mars Digital
Topographic Map (DTM) files, or any topographic data file which is
organized by rows and columns of elevation data.  3DEM will also
produce realistic fractal landscape scenes.  3DEM uses the
SGI/Microsoft OpenGL libraries for high speed 3D rendering.

3DEM will render 16 or 24 bit color three dimensional projections,
red-blue projections requiring red-blue 3D glasses for viewing, or
color 3D projections requiring Liquid Crystal (LCD) electronic
shutter glasses for viewing.  Completed scenes can be saved as
Windows bitmaps for transfer to other applications or as 16 bit
height field bitmaps for use with the POV-Ray ray tracing
software.  Flybys can be saved as mpeg animation files (*.mpg)
which can be played back with freely available Windows 95 mpeg
player software, or as special animation files for LCD shutter
glasses (*.fly) which can be played back from within the 3DEM
program.

EQUIPMENT AND SOFTWARE REQUIRED

3DEM is designed to run under Win95 or WinNT with 24 bit color
graphics.  A 133 MHz Pentium or better microprocessor and fast
graphics card are recommended.  A minimum of 16 MBytes of memory 
is also required.  However, less than 32 MBytes of memory will 
limit the usefullness of the high resolution modes of OpenGL 
rendering.

For Win95 you will need the Microsoft OpenGL libraries from
http://www.microsoft.com/hwdev/devdes/opengl.htm if these files
are not already installed on your system.

To install 3DEM60, just copy 3dem60.exe, 3dem60.hlp, 3dem60.cnt,
and zlib.dll to a convenient directory on your hard drive. You can
run 3dem60.exe directly, or create a shortcut to 3dem60.exe for
your desktop.

The latest update to 3DEM can always be found at
http://www.monumental.com/rshorne/3dem.html.

CONTACTING THE AUTHOR

Programs are only improved by the incorporation of new ideas. 
Your ideas are welcome.  Please report any bugs or send any
questions, comments, or ideas to rshorne@mnsinc.com, or visit the
3DEM web page at http://www.monumental.com/rshorne/3dem.html.
