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Welcome to Fractal Forums > Fractal Math, Chaos Theory & Research > Mandelbrot & Julia Set > The 3D Mandelbulb > Mandelbulb Implementation > Please try this... new 3d mandelbrot formula, animations included
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Author Topic: Please try this... new 3d mandelbrot formula, animations included  (Read 2876 times)
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Syntopia
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syntopiadk
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« Reply #15 on: January 25, 2013, 09:58:43 PM »
Quote from: Fred Decker on January 25, 2013, 06:24:26 PM
Good to know... thanks again!  I didn't understand the continuous mode before, but I did notice the added sand with the change in "detail" control.  Will try again tonight.


The sand-stuff is usually because the DE-function has problems in some regions. You could try lowering the FudgeFactor in the RayTracer tab, but there is no guarantee.

As Eiffie mentioned the latest Fragmentarium build has some support for Non-DE rendering - it can be found here: http://www.fractalforums.com/3d-fractal-generation/rendering-3d-fractals-without-distance-estimators/msg54477/#msg54477
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knighty
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« Reply #16 on: January 25, 2013, 11:35:31 PM »
You can also try a larger bailout value (say 10 to 100) to reduce the sand effect.
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DarkBeam
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« Reply #17 on: January 25, 2013, 11:41:33 PM »
It looks a lot like Rucker's brot, the oldest formula ever. Ages ago Makin rendered it  wink
Don't waste your time fiddling with angles, somebody made general formulas already! wink
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No sweat, guardian of wisdom!
Fred Decker
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fred.decker
« Reply #18 on: January 26, 2013, 12:42:24 AM »
I'm very familiar with Rucker's solution.  I've seen (and implemented) both the original Rucker formulas, and the optimizations.  Both of those give different results.  I'll show the differences at some point, I've already got them all running side by side in mathematica.  The way he identifies the angles and rotations are different, and it makes a real difference in the escape iteration counts, and therefore shape.  The general shape is similar in a way, but definitely not the same. 
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