This is no beginners' book, indeed even the adequate programmer not up in maths will not have an easy time of it, grasping the programs, but not the maths behind them. There are few concessions to the debutante in graphics (or in anything else) and the basic groundwork more or less stops with the explanation that the Beeb's graphic co-ordinates remain constant in all modes with the pixel (picture element) changing in size.

This is certainly a very substantial compendium copiously filled with programs, diagrams and illustrations, including sixteen pages of full colour plates. All aspects of computer graphics are covered here quite comprehensively, with major sections on two and three dimensional graphics.

A significant part of the book is devoted to tessellations and other repeating patterns. These are shown nested an in hierarchies, creating patterns which can be scaled, re-oriented, repeated and re-positioned. The main text is accompanied by a very substantial number of program listings to illustrate many of the concepts, and as the maths becomes more complex copious diagrams are introduced to demonstrate some of the concepts of movement, area and colour.

Many of the listings and illustrations relate to Graphito, Tesselator and an earlier program, Electronic Colouring Book. The book is probably definitive. It is certainly packed with ideas and information, but no-one could accuse it of being user-friendly!