int i = 0; //declaring 1
int c1= 60; //declaring red spectrum default
int c2= 60;//declaring green spectrum default,
int c3= 255;//declaring blue spectrum default

void setup() {
  size(600, 500);//field size
  smooth();
  
}
void draw(){
  background(c1, c2, c3);//field bacground uses default colour
  for (i=0; i<75; i+=3){//for loop
  drawTHIS(250,300-i, 6, 6, 255);//center on 250 and 
  //300-i(inner ellipse is larger)
  line(250+(i*5),250+i,250,0);//upper increment right
  line(250-(-i*-5),250+i,250,0);//upper increment left
  line(250-(-i*-5),250-(i+5),250,500);//lower increment left
  line(250+(i*5),250-(i+5),250,500);//lower increment left
  }
  fill(0,0,0,0);//transparent ellipse not included in 
                //method drawTHIS or for loop
  ellipse(500,250,140,140);
}

void drawTHIS(int xy, int ab, int c1, int c2, int c3){
  stroke(255, c2, c3);//stroke colour
  fill(c1, c2, c3);//outer ellipse colour
  ellipseMode(CENTER);
  ellipse(xy,xy, ab, ab);//outer ellipse
  fill(c1, c2, c3);//inner ellipse colour
  ellipse(xy,xy,ab/10,ab/10);//inner ellipse
}