--start-- This archive contains the source code for a sample system to render 3-D scenes to illustrate 3-D clipping, as discussed in my "Ramblings in Realtime" column in the March/April 1995 issue of _Dr. Dobb's Sourcebook_. The archive contains the source code for CLIP, a C program that contains a small 3-D graphics engine to demonstrate 3-D clipping. Both programs are Win32 programs, tested with VC++ 2.0 running on Windows NT 3.5. To make the VC++ projects for this program, just unzip this archive into the desired directory using the -d switch to pkunzip; it will create a windebug subdirectory. Have VC++ build a project from the files in the directory. Besides the source code, the Win32 executable clip.exe is provided in the WinDebug subdirectory. Key commands to clip.exe are as follows: left and right arrows: turn left and right up and down arrows: go forward and backward A and D: look up and down N and M: roll left and right D and C: move up and down Thanks to Chris Hecker, John Carmack, and Eric Kutter for their help. Enjoy! Michael Abrash mikeab@idsoftware.com 12/25/95 --end--