Hi. Here is my Think C/C++ class library for 3D wireframe graphics and animation. It supports coordinated animation of a hierarchy of nested graphical segments, time-based simulation, multiple viewpoints and display windows, and portability among Macintosh, PC-compatible, and X Window platforms. A description may be found in the May 1993 on-line issue of Computer Graphics (ftp siggraph.org, in the publications/May_93_online/Gonzalez directory) and the Sept. 1993 print issue. This version is tarred and compressed, so to extract it on a unix system you say: uncompress pict.tar.Z tar xf pict.tar If you have the gnu C++ compiler and the XWindow system, simply enter the pict directory and type: "make anringpi" to see a sample animated picture. You can also compile pictures for DOS systems. There's also a Mac version of these files, which differs only in using the .c extension for source files. Check out the picthelp.txt file for help compiling and using the library. Please let me know if you find it useful and/or if you produce any neat results. Ralph Gonzalez, Computer Science, Rutgers Univ., Camden, NJ 08102 gonzalez@crab.rutgers.edu