Combining the fundamental principles and algorithms involved in graphics with specific applications and examples, this book helps readers more fully understand how CAD software programs function, and how to diagnose and solve problems associated with modelling design on CAD systems. It uses the C programming language and AutoCAD to give specific examples, flexible enough to be used with other programming languages and CAD tools; takes a hands-on approach; covers graphing and drafting in both 2-D and 3-D; discusses colour theory and applications, as well as the more mathematical splines and other curves; and covers material on 3-D transformations, rendering, and simple illumination models to the ray tracing and texture mapping techniques used to produce photo-realistic images. It is designed for advanced CAD courses in departments of mechanical engineering, aerospace engineering, structural engineering, and bioengineering.