parametric play

a = 3, b = 1, c = 0,d = 1
function setup() {
  createCanvas(720, 720);
  angleMode(DEGREES);
  stroke(0);
  strokeWeight(1);
  strokeWeight(0);
}

function draw() {
  translate(360,360)
  text('Parametric Generator - click to change the equation (plots (x,y) and (y,x))',-350,-320)
  y = 120*(cos(a*frameCount/5)+sin(b*frameCount/5)/2)
  x = 220*(sin(c*frameCount/5)/2+cos(d*frameCount/5));
  fill(0,random(255),random(255),50);
  circle(y,x,10)
  circle(x,y,10)
  
}
function mousePressed() {
    background(255)
    frameCount = 1;
    a = round(random(12))
    b = round(random(12))
    c = round(random(12))
    d = round(random(12))
    str1 = ('(x,y) = '+ 'cos('+ a + 't) + sin('+b+'t)/2, sin('+c+'t)/2+cos('+d+'t))');
    strokeWeight(1)
    text(str1,0,350)
    strokeWeight(0)
    print(a,b,c,d)
}