CAST is an acronym for Color Animation and Scene Transformation. The objective of this system is to give non-computing personnel the ability to create still and animated pictures with the aid of a digital computer. Data generation and animation language are two key components that comprise an animation system. The CAST system incorporates an interactive dialogue to assist the user in generating and/or editing three dimensional scenes, and an animation language which uses a simple script like syntax to describe parallel motion. The third key component of an animation system is the display. The CAST system incorporates hidden surface elimination and surface shading necessary to produce realistic images. The output is in device independent form so that it may be adapted to virtually any type of display . This thesis covers the design and implementation of the CAST system. Basic concepts as well as requirements, design problems/tradeoffs, and implications of this system are also discussed
