02.01 + 02.03 - OpenProcessing

mySketch
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function setup() 
{
    createCanvas(1000, 1000);
    background (255);
    fill(255, 0, 0);
    noStroke();
}
​
function draw() 
{   
  widthVariable = abs(mouseX-pmouseX);
  heightVariable = abs(mouseY-pmouseY);
  ellipse(mouseX, mouseY, widthVariable + heightVariable, heightVariable + widthVariable);
}
​
function keyPressed() 
{
  if (key == 'r')
  {
    fill(random(100, 255), 0, 0);
  }
  else if(key == 'g')
  {
    fill(0, random(100, 255), 0);
  }
  else if(key == 'b')
  {
    fill(0, 0, random(100, 255));
  }
}