processingjs colorwheel demo

// All Examples Written by Casey Reas and Ben Fry// unless otherwise stated.int segs = 12;int steps = 6;float rotAdjust = radians(360.0/segs/2.0);float radius = 95.0;float segWidth = radius/steps;float interval = TWO_PI/segs;int SHADE = 0;int TINT = 1;void setup(){  size(200, 200);  background(127);  smooth();  ellipseMode(CENTER_RADIUS);  noStroke(); // you can substitue TINT for SHADE argument createWheel(width/2, height/2, SHADE);}void createWheel(int x, int y, int valueShift){  if (valueShift == SHADE){    for (int j=0; j<steps; j++){      color[]cols = {         color(255-(255/steps)*j, 255-(255/steps)*j, 0),         color(255-(255/steps)*j, (255/1.5)-((255/1.5)/steps)*j, 0),         color(255-(255/steps)*j, (255/2)-((255/2)/steps)*j, 0),         color(255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j, 0),         color(255-(255/steps)*j, 0, 0),         color(255-(255/steps)*j, 0, (255/2)-((255/2)/steps)*j),         color(255-(255/steps)*j, 0, 255-(255/steps)*j),         color((255/2)-((255/2)/steps)*j, 0, 255-(255/steps)*j),         color(0, 0, 255-(255/steps)*j),        color(0, 255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j),         color(0, 255-(255/steps)*j, 0),         color((255/2)-((255/2)/steps)*j, 255-(255/steps)*j, 0) };      for (int i=0; i< segs; i++){        fill(cols[i]);        arc(x, y, radius, radius, interval*i+rotAdjust, interval*(i+1)+rotAdjust);      }      radius -= segWidth;    }  } else  if (valueShift == TINT){    for (int j=0; j<steps; j++){      color[]cols = {         color((255/steps)*j, (255/steps)*j, 0),         color((255/steps)*j, ((255/1.5)/steps)*j, 0),         color((255/steps)*j, ((255/2)/steps)*j, 0),         color((255/steps)*j, ((255/2.5)/steps)*j, 0),         color((255/steps)*j, 0, 0),         color((255/steps)*j, 0, ((255/2)/steps)*j),         color((255/steps)*j, 0, (255/steps)*j),         color(((255/2)/steps)*j, 0, (255/steps)*j),         color(0, 0, (255/steps)*j),        color(0, (255/steps)*j, ((255/2.5)/steps)*j),         color(0, (255/steps)*j, 0),         color(((255/2)/steps)*j, (255/steps)*j, 0) };      for (int i=0; i< segs; i++){        fill(cols[i]);        arc(x, y, radius, radius, interval*i+rotAdjust, interval*(i+1)+rotAdjust);      }      radius -= segWidth;    }  } }