What animation would you expect?
basically the ideal situation is to be able to place keyframes along a timeline, essentially "what i'm looking at now", then you do some spline interpolation along the timeline.
if you really want to make some hot animations then there are three especially important things to bear in mind:
1. motion blur - it's 2007 basically, there's no excuse for not having it
you'll certainly agree when you see the output!
2. high dynamic range rendering - this goes especially well with the above to make really bright streaks.
3. interpolate the fractal parameters too (since you're rendering mandelbrots and julias, be sure to interpolate parameters for a triangle inequality average orbit trap!).
if you want to see an example of the above working together, check the animations at
http://www.fractographer.com/wip ("test" series of files, needs xvid codec)
oh, one more thing: i don't know what the current status of the java opengl bindings is, more specifically whether or not it supports fragment progrems, but you could make some very fast animation previews with some hardware acceleration. modern gpus support 32bit floating point computations (and the latest are essentially ieee754 compliant) and can easily do those zooms in realtime:
http://www.fractographer.com/propaganda/gf8800mandelbrot.png (that's without continuous escapetime, though you've said on sf that it doesn't hurt speed much).
btw gandreas, since you're reading this thread
i'd be very interested to see some animations produced by quadrium using the above techniques! i also think you could benefit a lot from gpu acceleration...
February 23, 2007, 12:42:12 PM
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