The Svensson Attractor is defined by these two equations:
x_n+1 = d*sin(a*x) - sin(b*y)
y_n+1 = c*cos(a*x) + cos(b*y)

Change the values of the parameters a, b, c, and d by using the sliders.

Key 'r': Redraw with a random set of parameters.

LEFT_ARROW: Draw with few points (faster).

RIGHT_ARROW: Draw with many more points (slower).

Key 'e': Save a high-resolution PNG of the current image.

Key 'a': Increment the number of lines.

Key 's': Decrement the number of lines.

The p5js code

This p5js code is scrollable.