0303velocityofhue

var thesize = 1; // GLOBAL VARIABLE

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(255);

}

​

function draw() {

  var speed = dist(mouseX, mouseY, pmouseX, pmouseY); // hypotenuse

  // pmouseX and pmouseY are the previous mouseX and mouseY

  strokeWeight(speed);

  fill(0, 20);

  stroke(0, 20);

  line(pmouseX, pmouseY, mouseX, mouseY);

  fill(255, 0, 0, 50);

  noStroke(); 

  if(mouseIsPressed) ellipse(mouseX, mouseY, speed, speed);

​

}

​

function keyTyped() {

  if(key=='c') {

    background(255);

    thesize = 1;

  }

}