[Processing] Islamic Pattern

float dia =400;

float angle; 

float sW_max;

void setup() {

  size(900, 900);

  surface.setLocation(987, 70);

  strokeCap(CORNER);

  stroke(255);

  mouseX=10;

}

void draw() {

  background(0, 40, 65); 

  dia = lerp(dia, mouseX, 0.1);

  translate(width/2, height/2);

  rotate(-angle);

  for (int a =0; a<360; a+=20) {

    pushMatrix();

    rotate(radians(a));

    for (int r=0; r<180; r+=8) {

      float sW =map(cos(radians(r)), -1, 1, sW_max, 1);

      strokeWeight(sW);

      line(sin(radians(r))*dia, cos(radians(r))*dia, sin(radians(-r))*dia, cos(radians(-r))*dia);

    }

    popMatrix();

  }

  angle+=TWO_PI/720;

  float sW_angle = map(dia, 0, width, 0, 360);

  sW_angle = constrain(sW_angle,180,360);

  sW_max =map(cos(radians(sW_angle)), -1, 1, 1, 15);

  noFill();

  stroke(255);

  ellipse(0, 0, dia*2, dia*2);

}

//The Dot is black (reference)