Contributors from around the world provide coverage of the latest developments in computer graphics, visualization, and human - computer interaction. The book emphasizes applications of these technologies in virtual environments. The decades of the 1970s and 1980s were a very exciting period of discovery in the field of computer graphics. It was a time when new rendering algorithms, different modeling strategies, clever animation techniques, and significant advances in photorealism were being made. Complementing these software developments, hard ware systems were dominated by raster technology and programmers had access to excellent workstations on which to develop their graphics systems.