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Fractal Art => Images Showcase (Rate My Fractal) => Topic started by: element90 on February 17, 2012, 11:42:42 PM




Title: Orbit Something
Post by: element90 on February 17, 2012, 11:42:42 PM
Orbit Something

(http://nocache-nocookies.digitalgott.com/gallery/10/5522_17_02_12_8_38_54.jpeg)

http://www.fractalforums.com/index.php?action=gallery;sa=view;id=10359

An orbit plotted fractal. In this case a Mandelbrot with a transform applied to it.

Unlike Buddha brots and anti-Buddha-brot the orbits are plotted regardless of whether the orbit escapes, also I don't use random points for the orbits, the starting points of the orbits are the locations in the complex plane that would be used in the normal Mandelbrot algorithm.


Title: Re: Orbit Something
Post by: Saquedon on February 18, 2012, 01:24:14 AM
You might want to fix this post.


Title: Re: Orbit Something
Post by: element90 on February 18, 2012, 03:40:28 PM
What's wrong with it?


Title: Re: Orbit Something
Post by: Saquedon on February 18, 2012, 07:00:48 PM
The image didn't show earlier, error in the html i think.


Title: Re: Orbit Something
Post by: cKleinhuis on February 18, 2012, 10:23:55 PM
its a problem with the gallery, i dont know the solution yet, interesting image!
how do you get so clean areas ? i mean, wouldnt it be rather predictable that parts of the image stay "dotted" or black ?!


Title: Re: Orbit Something
Post by: element90 on February 18, 2012, 11:24:25 PM
The colouring method I used with this was square root:

value = trunc(divisions*(sqrt(hits)/sqrt(max_hits))

The expession sqrt(hits)/sqrt(max_hits) gives a value in the range 0.0 to 1.0 this is divided up into a number of divisions in order to get an integer value that can be used to select a colour from a colour map.

The (value + an offset) modulus the number of colours in the colour map gives the index of the colour in the colour map. The colour map in this case has 512 colours and no black so areas of the image that aren't visited by an orbit are also coloured.

The calculated was image was 9000x6000 pixels and then scaled to 1200x800 using Gimp.


Title: Re: Orbit Something
Post by: cKleinhuis on February 19, 2012, 04:05:48 PM
ok, thank you for clarifying


Title: Re: Orbit Something
Post by: Saquedon on February 21, 2012, 12:09:21 PM
Rotate 90 degrees counterclockwise.