tuto5_v2_easing.pde

float easeOutElastic(float x)
{
  float c4 = (2*PI)/3;
  if(x<=0) return 0;
  if(x>=1) return 1;
  return pow(2, -10 * x) * sin((x * 10 - 0.75) * c4) + 1;
}

// in-out easing of strength g
float ease(float p, float g) {
  if (p < 0.5) 
    return 0.5 * pow(2*p, g);
  else
    return 1 - 0.5 * pow(2*(1 - p), g);
}