Zeichenwerkzeug 2 Farben - OpenProcessing

mySketch

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function setup() {
  createCanvas (windowHeight, windowWidth);
  background (255);
}
​
function draw() {
​
var a = random (20,255);
var b = 0;
​
if (keyIsPressed === true) {
    b = random (20,255);
    a = 0;
  }
​
  if (mouseIsPressed){
    if (mouseButton == LEFT) {
  fill (a, 0,b);
  translate (mouseX,mouseY);
  
  noStroke ();
  rect (0,0,20,20+(a+b)/3);
  
}
}
}
​
​