Xadrez para N (Colorful edition)

Clique na imagem para mudar a quantidade

int n = 2;
float p = 0;

void setup()
{
  size(600, 600);
  colorMode(HSB);
  noStroke();
}
void draw()
{
  background(127,0);
  fill(0);
  textSize(32);
  text(n, 10, 30); 
  translate(width/2, height/2);
  Board(n, 150);
}

void Board(int p, float s) {
    rotate(PI/p);
    for (int i = 0; i < p*2; i++) {
    Quarter(s, PI/p, (i%2==0), i, p);
    rotate(PI/p);
  }
}

void Quarter(float r, float d, boolean b, int c, int p)
{
  pushMatrix();
  float a = HALF_PI - d;
  for (int i = 0; i<4; i++) {
    for (int j = 0; j<4; j++) {
      float y = j*r/4;
      float x = 0;
      if ((i+j)%2 == 0)
        fill(b ? color(map(round(c/2)*2, 0, p*2, 0, 255), 255, 255) : 255);
      else
        fill(b ? 255 : color(map(round(c/2)*2, 0, p*2, 0, 255), 255, 255));
      beginShape();
      vertex(x, y);
      vertex(x+r/4*cos(a), y+r/4*sin(a));
      vertex(x+r/4*cos(a), y+r/4+r/4*sin(a));
      vertex(x, y+r/4);
      endShape(CLOSE);
      if (j==3) {
        translate(r/4*cos(a), r/4*sin(a));
      }
    }
  }
  popMatrix();
}

void mouseClicked() {
  if (mouseButton == LEFT) {
    if (mouseX < width/2 && n > 2) {
      n--;
    } else if (mouseX > width/2) {
      n++;
    }
  }
  if (mouseButton == RIGHT) {
    save(n+"-Chess.png");
  }
}