| 1 | function ease_out_elastic(arg0, arg1, arg2, arg3) |
| 2 | { |
| 3 | var _s = 1.70158; |
| 4 | var _p = 0; |
| 5 | var time = arg0; |
| 6 | var start = arg1; |
| 7 | var change = arg2; |
| 8 | var duration = arg3; |
| 9 | if (time == 0 || change == 0) |
| 10 | return start; |
| 11 | time /= duration; |
| 12 | if (time == 1) |
| 13 | return start + arg2; |
| 14 | if (!_p) |
| 15 | _p = duration * 0.3; |
| 16 | if (change < abs(arg2)) |
| 17 | { |
| 18 | change = arg2; |
| 19 | _s = _p * 0.25; |
| 20 | } |
| 21 | else |
| 22 | { |
| 23 | _s = (_p / (2 * pi)) * arcsin(arg2 / change); |
| 24 | } |
| 25 | return (change * power(2, -10 * time) * sin((((time * duration) - _s) * (2 * pi)) / _p)) + arg2 + start; |
| 26 | } |