NextFractal

In this example you will learn how to create a Mandelbrot set with a simple gradient.

fractal { // Set region margins to left=-3.0, bottom=-1.5, right=0.0, top=1.5 // Declare state vector as [x,n] where x and n are built-in variables orbit [<-3.0,-1.5>,<0.0,1.5>] [x,n] { // Iterate for n from 0 to 200 stopping when mod2(x) > 4 loop [0, 200] (mod2(x) > 4) { // Declare orbit equation where x is a state variable and w is current point of region x = x * x + w; } } // Set background color to alpha=1, red=0, green=0, blue=0 color [(1,0,0,0)] { // Create palette with 200 colors and name gradient palette gradient { // Create 20 interpolated colors from FFFF0000 to FFFFFFFF [#FFFF0000 > #FFFFFFFF, 20]; // Create 180 interpolated colors from FFFFFFFF to FF000000 [#FFFFFFFF > #FF000000, 180]; } // Apply rule when n > 0 and set opacity to 1.0 rule (n > 0) [1.0] { // Set color to element n - 1 of gradient (gradient has 200 colors starting from index 0) gradient[n - 1] } } }

Execute the script above in NextFractal and you will get the image below:

Download NextFractal and start creating your own fractal images. NextFractal is free software, available for Mac, Windows and Linux. The latest release of NextFractal and the source code are available on GitHub.