A friendly tutorial for programmers working with ACIS.[Whether working in computer-aided design, virtual reality or the games industry, any computer graphics and CAD/CAM specialist must understand the principles and applications of 3D modelling. This book is a practical introduction to ACIS, the commercially available modeling tool that helps any graphics programmer. It takes a hands-on look at the functions of ACIS, and how they apply to basic solid modelling technology, covering everything from simple techniques to sophisticated modelling tasks.