| private easeInElastic ( float start, float end, float value ) : float | ||
| start | float | |
| end | float | |
| value | float | |
| return | float | |
private float easeInElastic(float start, float end, float value)
{
end -= start;
float d = 1f;
float p = d * .3f;
float s = 0;
float a = 0;
if (value == 0) return start;
if ((value /= d) == 1) return start + end;
if (a == 0f || a < Mathf.Abs(end)){
a = end;
s = p / 4;
}else{
s = p / (2 * Mathf.PI) * Mathf.Asin(end / a);
}
return -(a * Mathf.Pow(2, 10 * (value-=1)) * Mathf.Sin((value * d - s) * (2 * Mathf.PI) / p)) + start;
}