Adobe illustrator - Phyllotaxis pattern generator

phyllotactic.jsx

var mydoc = app.activeDocument;
var myLayer = mydoc.layers[0];
// var myLayer = mydoc.layers.add();
// myLayer.name = "myLayer";

var c = 4;
var size = 5;
correction=size/2;

function degrees_to_radians(degrees)
{
  var pi = Math.PI;
  return degrees * (pi/180);
}

for (var n = 0; n<1000; n++) {
    var a = n * 137.5;
    var r = c * Math.sqrt(n);
  
    var x = Math.cos(degrees_to_radians(a))*r+306-correction;
    var y = Math.sin(degrees_to_radians(a))*r+396+correction;
    
    var circle = myLayer.pathItems.ellipse(y, x, size, size);
    var mycolor = new RGBColor();
    mycolor.red = 255;
    mycolor.green = (n)%256;
    mycolor.blue = (n*a)%256;
    circle.fillColor=mycolor;
  }