let lastMousePressed = false; 

​

function setup() {

  createCanvas(600, 600);

   background(220);

​

}

​

function draw() {

 if (mouseIsPressed && !lastMousePressed) {

    scaleFactor += 0.5; 

  }

​

  lastMousePressed = mouseIsPressed; 

​

​

  scale(scaleFactor);

  pattern(1,3,7,4);

  pattern(2,4,7,4);

   pattern(3,5,6,8);

    pattern(4,6,4,3);

  pattern(5,7,6,6);

  pattern(6,8,7,5);

   pattern(7,9,6,5);    

​

​

 }

​

function pattern(x,y,i,j){

   if (mouseIsPressed) {

    let r = random(0, 255);  

    let g = random(0, 255);  

    let b = random(0, 255);  

    stroke(r, g, b);         

  } else {

    stroke(0,50);

  }

  translate(x,y);

  //point((x * cos(frameCount * 0.1) + i),(y*sin(frameCount*0.1+j)));

  line((x * cos(frameCount * 0.1) + i),(y*sin(frameCount*0.1+j)),i,j);

​

​

}