Bruce Tang is a freelance web designer, visual programmer, and author from Hong Kong. His main creative interest is generating stunning visual effects using Flash or Processing.

Bruce has been an avid Flash user since Flash 4, when he began using it to create games, websites, and other multimedia content. After several years of ActionScripting, he found himself increasingly drawn toward visual programming and computational art. He likes to integrate math and physics into his work, simulating 3D and other real-life experiences on the screen. His first Flash book was published in October 2005. Bruce's folio, featuring Flash and Processing pieces, can be found at www.betaruce.com. Visit his blog at www.betaruce.com/blog.

The cover image uses a high-resolution Henon phase diagram generated by Bruce with Processing, which he feels is an ideal tool for such experiments. Henon is a strange attractor created by iterating through some equations to calculate the coordinates of millions of points. The points are then plotted with an assigned color.

x_{n + 1} = x_n cos(a) – (y_n – x_n^p) sin(a)

y_n+1 = x_n sin(a) + (y_n – x_n^p) cos(a)