G'day Friends, Has anyone been able to successfully implement Perturbation in their fractal code? I have been playing with Kalles Fraktaler and it only uses double float in the deep zooming code, except for addressing the pixel and has many orders of magnitude increase in speed compared to Fractint and even modern programs like Fractal eXtreme. The source code is quite complex and I haven't been able to extract the algorithm. The algorithm given by K. I. Martin is surprisingly simple and yet doesn't really help to make sense enough to write code. Here is a link to the algorithm docucumentation, and both the free program and to the source in C++: http://www.chillheimer.de/kallesfraktaler/index.htm I am keen to implement this algorithm in ManpWIN but would like some assistance if anyone is interested. Thanks, Paul. ---------------------------------------------------------- Paul de Leeuw Computers NSW Central Coast, Australia Email: <mailto:pdeleeuw@deleeuw.com.au> pdeleeuw@deleeuw.com.au www: < <http://www.deleeuw.com.au/> http://www.deleeuw.com.au> ABN 72 360 822 562 ----------------------------------------------------------