Burning Ship fractal – Wikipedia
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Complex plane fractal
The Burning Ship fractal, first described and created by Michael Michelitsch and Otto E. Rössler in 1992, is generated by iterating the function:
in the complex plane
which will either escape or remain bounded. The difference between this calculation and that for the Mandelbrot set is that the real and imaginary components are set to their respective absolute values before squaring at each iteration. The mapping is non-analytic because its real and imaginary parts do not obey the Cauchy–Riemann equations.[1]
Burning Ship fractal renderings
Implementation[edit]
Animation of a continuous zoom-out to show the amount of detail for an implementation with 64 maximum iterations
The below pseudocode implementation hardcodes the complex operations for Z. Consider implementing complex number operations to allow for more dynamic and reusable code. Note that the typical images of the Burning Ship fractal display the ship upright: the actual fractal, and that produced by the below pseudocode, is inverted along the x-axis.
for each pixel (x, y) on the screen, do: x := scaled x coordinate of pixel (scaled to lie in the Mandelbrot X scale (-2.5, 1)) y := scaled y coordinate of pixel (scaled to lie in the Mandelbrot Y scale (-1, 1)) zx := x // zx represents the real part of z zy := y // zy represents the imaginary part of z iteration := 0 max_iteration := 100 while (zx*zx + zy*zy < 4 and iteration < max_iteration) do xtemp := zx*zx - zy*zy + x zy := abs(2*zx*zy) + y // abs returns the absolute value zx := xtemp iteration := iteration + 1 if iteration = max_iteration then // Belongs to the set return insideColor return (max_iteration / iteration) × color
References[edit]
- ^ Michael Michelitsch and Otto E. Rössler (1992). “The “Burning Ship” and Its Quasi-Julia Sets”. In: Computers & Graphics Vol. 16, No. 4, pp. 435–438, 1992. Reprinted in Clifford A. Pickover Ed. (1998). Chaos and Fractals: A Computer Graphical Journey — A 10 Year Compilation of Advanced Research. Amsterdam, Netherlands: Elsevier.
ISBN 0-444-50002-2
External links[edit]
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