Title: a question about mandelbulbs's negative power Post by: visual.bermarte on April 16, 2010, 11:08:03 AM Is it possible that using negative-power one can see what is it inside a mandelbulb?
Or am I wrong? I think I can see the negative-bulb like an inside-out glove; if I'm wrong what is it exactly a negative-power of a mandelbulb? Is it possible to have an inside.out mandelbulb? Thanx Title: Re: a question about mandelbulbs's negative power Post by: visual.bermarte on April 16, 2010, 11:16:35 AM For example in this image you see negative power of a bulb
(http://fc04.deviantart.net/fs70/i/2010/099/5/8/regular_negative_mndlblb_bll_by_bermarte.jpg) here is the positive-power of the same bulb (http://fc09.deviantart.net/fs70/f/2010/086/6/6/olive_1_by_bermarte.jpg) Title: Re: a question about mandelbulbs's negative power Post by: David Makin on April 16, 2010, 12:18:51 PM Hi, first of all for a plain Mandelbulb of the form z^p+c where p is negative then the current rendering methods are not really geared to producing correct images. Secondly, no the negative powers are not just the inside-out versions of the positive ones. To view the positive powers from the "inside" is a lot more tricky than viewing from the "outside" but not impossible - as some of Daniel White's renders have shown.
Also in the case you have given example renders for it would appear that your renders are actually Mandelbox/Mandelbulb mixes and they are a different beast altogether :) Title: Re: a question about mandelbulbs's negative power Post by: visual.bermarte on April 16, 2010, 03:18:21 PM Thank you David.
Can I find a rendering of the internal part of a negative mandelbulb? Is it possible to apply mandelbox's cubic folding on the surface of a negative mandelbulb (mandelbulb-box-mix like the one on the pictures). Thanx in advance Title: Re: a question about mandelbulbs's negative power Post by: KRAFTWERK on April 16, 2010, 04:44:02 PM Daniel White has a few at his site, "B" O0:
http://www.skytopia.com/project/fractal/mandelbulb.html One favourite of mine, the spine: (http://www.skytopia.com/project/fractal/new/q85/Mandelbrot-Crustacean-small.jpg) Link to Daniels image of "the inside": http://www.skytopia.com/project/fractal/new/full/q30/PeekInsideSIDEview.jpg J Title: Re: a question about mandelbulbs's negative power Post by: reesej2 on April 16, 2010, 08:13:12 PM A negative-power Mandelbulb is certainly worth exploring (I know that negative-power Mandelbrot sets are very interesting, though certainly not inside-out versions of positive-power Mandelbrots). But if it's an inside-out view you want, just call a point "solid" if it's OUTSIDE the set instead of inside. |