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Negated inversion testOrbit trap colouringSmooth iteration colouring
Orbit trap colouring
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Description: This is a render of the bulb, solid based on DE threshold alone, colouring 100% orbit trap (to origin).
Showing that the orbit trap can be used for pseudo-ambient occlusion.
The thing is that maybe a distance estimate can be calculated wholly using the smooth iteration value and the orbit trap (to origin) value since adjusting the smooth iteration value by the orbit trap value correctly will give us the distance estimate value - see the "Smooth iteration colouring" image:

http://www.fractalforums.com/index.php?action=gallery;sa=view;id=1371
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Filesize: 398.43kB
Height: 800 Width: 800
Keywords: mandelbulb orbit trap mandelbrot fractal digital algorithmic ultrafractal 
Posted by: David Makin January 23, 2010, 11:58:27 PM

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