The second type of plug-in is “Combo.” It allows combinations such as (f1+f2)/f3 or f1(f2)). The latter means evaluate f2 to get a new value, then use that value as input to f1. The following example starts with Perlin 3D noise, followed by repeats of a Combo of Mandelbrot, Mandelbar, and Function.
D-N-CMM'F-J {
::q3UZWin2deVwutNOQ07Gw/DC6y2uLstIVkVdXwLJF5QQTxCk90iFwgiiyibpIVpoTq7X/OSU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}
These plug-ins are nestable. In the final example, the main formula is Combo, f1 is Mandelbrot, and f2 is the Two Formulas plug-in. In the Two Formulas plugin, the first formula is a Combo of Function and Lambda, and the second formula is Poly Newton.
D-P'-C2FL-M2 {
::IIKK9gn21q1yutNOU09Gw/DCaz8owxikxy2dA300JLKSHEg0VFDgBtElNnhSUQiup+vvkUKP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}
Experiment. Guessing what gives interesting shapes is difficult.
Use Explore on parameters, including repeats and values for divergence or convergence.
Uninteresting-looking Mandelbrot types often have more interesting Julia types, depending on the seed.