Easing_example.pde

PVector p = new PVector(320, 240);
PVector t = p;
PVector e = new PVector(100, 100);

void setup() {
  size(640, 480);
  noCursor();
}

void draw() {
  t = new PVector(mouseX, mouseY);
  p.x = tween(p.x,t.x,e.x);
  p.y = tween(p.y,t.y,e.y);
  background(0);
  noStroke();
  fill(255);
  ellipseMode(CENTER);
  ellipse(p.x, p.y, 5, 5);
  fill(255, 0, 0);
  ellipse(t.x, t.y, 5, 5);
  if(e.x>5){
    e.x--;
    e.y = e.x;
  }
}

float tween(float v1, float v2, float e) {
  v1 += (v2-v1)/e;
  return v1;
}