Author Description

This unique work details a set of general graphics routines that C programmers can apply not only to the original IBM color graphics adapter but also to the popular Hercules Graphics Card and compatible monochrome graphics adapters. Focusing on low-level routines, text defines and discusses the elementary routines initgr, move, draw, and endgr. Concrete examples of both hardware and software are used to illustrate the range of graphics capabilites on both vector and raster devices. Gradually moving from elementary to more complex applications, the book offers a complete definition of the ASCII character font, enabling users to alter the dot patterns of existing characters and define new ones. Also contains a complete interactive program which draws on the tools developed in the book for sketching and drawing. For those who want to use a mouse as a graphics input device, the book offers an appendix with a demonstration program.