Fractals/MandelMachine

Mandel Machine Mandel Machine is a highly efficient Mandelbrot set explorer developed by Botond Kósa.

Algorithms

Bump mapping

"bump mapping. It allows fake-3D visualization of subtle details previously hidden by the slow gradients in the palette.

Bump mapping is controlled by 3 parameters:

• Direction of lighting (in degrees): specifies the angle of the simulated lighting. Surfaces facing the light are highlighted, the ones blocked from lighting are darkened.
• Depth: controls how much the structures emerge from the background of slow gradients. Shallow depth causes a relief/emboss-like look. Greater depth values result in deeper valleys between structures (see the examples below).
• Strength: controls the amount of color shift caused by highlights and shadows.

The parameters are continuously adjustable to give instant feedback."

Data format

"The Mandel Machine MMIT compressed iteration data file format:

• every datatype needs to be written in big endian notation.
• The following streamed through a Deflater (raw zlib format)" Dinkydau

<int 4 bytes> Program Version
<int 4 bytes> Canvas Width
<int 4 bytes> Canvas Height
<byte> Supersampling
<double> Magnification
<double> Rotation
<int 4 bytes> Number of coordinate digits represented by long ints
<long long array> array 2 times as long as the above int
<int 4 bytes> Iteration limit
<byte> Bytes per sample
<double> minimum iteration count
<double> granularity (equal to iterRange / (2^(bytes_per_sample*8) - 6), where iterRange is maxIt - minIt)
<int array> row by row encoded samples (one int value per pixel)

Doc

• old fractalforums posts