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  1. Greetings-- I am an Apophysis IFS flame fractal artist and I'm trying to figure out how to do flame fractals (known to you as "wisps") in Houdini. In researching the possibilities, I came across Yujie Shu's Master's thesis "3D Fractal Flame Wisps" written at Clemson under Dr. Tessendorf. http://tigerprints.clemson.edu/all_theses/1704/ She and the thesis have been quite enlightening and I am grateful. I've snagged a copy of Magnus Wrenninge's book PRODUCTION VOLUME RENDERING: DESIGN AND IMPLEMENTATION and am trying to learn the concepts as I work through the book. While installing the libraries that Mr. Wrenninge notes at the beginning (frustrating process; learned a lot; would rather be making fractals than debugging), I noticed I'd been installing libraries that are already in Houdini. How can I use what's already in Houdini and the HDK to follow along through Mr. Wrenninge's book? Has anyone written instructions on how to do this? Also, as Yujie Shu has mentioned in her thesis, the coloration method in Apophysis is different from anything I've seen in Houdini yet (although admittedly I haven't seen much to date). The gradient coloration in Apophysis is a freaky-awesome system that uses chaos weights to adjust a sequence of 256 colors in a Fractint color map. If used adeptly, it can yield some spectacular results. Not least of which is that it creates results discernible to tetrachromats--those people who can see finer gradations of color than the rest of us can. (I think a few people so gifted have visited a couple of my art displays.) Has anybody tried to/succeeded in making a tool that would work in Houdini to use that system--Fractint color maps chaos-weighted Apophysis-style--in Houdini wisps? Thanks. PS: Let me know if this question needs a better forum to hide in.