tween.php function($t,$b,$c,$d) { return $c*$t/$d + $b; }, 1 = function($t,$b,$c,$d) { return $b - $c*$t/$d; }, 2 = function($t,$b,$c,$d) { return $c*($t/=$d)*$t + $b; }, 3 = function($t,$b,$c,$d) { return -$c *($t/=$d)*($t-2) + $b; }, 4 =
function($t,$b,$c,$d) {
return $c*$t/$d + $b;
},
1 => function($t,$b,$c,$d) {
return $b - $c*$t/$d;
},
2 => function($t,$b,$c,$d) {
return $c*($t/=$d)*$t + $b;
},
3 => function($t,$b,$c,$d) {
return -$c *($t/=$d)*($t-2) + $b;
},
4 => function($t,$b,$c,$d) {
return $c*($t/=$d)*$t*$t + $b;
},
5 => function($t,$b,$c,$d) {
return $c*(($t=$t/$d-1)*$t*$t + 1) + $b;
},
6 => function($t,$b,$c,$d) {
return $c*($t/=$d)*$t*$t*$t + $b;
},
7 => function($t,$b,$c,$d) {
return -$c * (($t=$t/$d-1)*$t*$t*$t - 1) + $b;
},
8 => function($t,$b,$c,$d) {
return $c*($t/=$d)*$t*$t*$t*$t + $b;
},
9 => function($t,$b,$c,$d) {
return $c*(($t=$t/$d-1)*$t*$t*$t*$t + 1) + $b;
},
10 => function($t,$b,$c,$d) {
return ($t==0) ? $b : $c * pow(2, 10 * ($t/$d - 1)) + $b;
},
11 => function($t,$b,$c,$d) {
return ($t==$d) ? $b+$c : $c * (-pow(2, -10 * $t/$d) + 1) + $b;
}
];
$t = time();//最后的时间 修改更改
$b = 10000 + rand(0,20);
$rt = [];
shuffle($tween);
$key = rand(0,11);//添加其他后再增加
$func = $tween[$key];
//$func = $tween[11];
$d = 30;
for($i;$i < $d; $i++) {
$j = $t + $i;
$v = $func($i,$b, $i, $d);
$rt[$j] = sprintf("%.2f", $v);
}
var_export($rt);
优化后的算法
function($num) {
return pow($num, 2);
},
1 => function($num) {
return -(pow(($num - 1), 2) - 1);
},
2 => function($num) {
if (($num /= 0.5) < 1)
return 0.5 * pow($num, 2);
return -0.5 * (($num -= 2) * $num - 2);
},
3 => function($num) {
return pow($num, 3);
},
4 => function($num) {
return (pow(($num - 1), 3) + 1);
},
5 => function($num) {
if (($num /= 0.5) < 1)
return 0.5 * pow($num, 3);
return 0.5 * (pow(($num - 2), 3) + 2);
},
6 => function($num) {
return pow($num, 4);
},
7 => function($num) {
return -(pow(($num - 1), 4) - 1);
},
8 => function($num) {
if (($num /= 0.5) < 1)
return 0.5 * pow($num, 4);
return -0.5 * (($num -= 2) * pow($num, 3) - 2);
},
9 => function($num) {
return pow($num, 5);
},
10 => function($num) {
return (pow(($num - 1), 5) + 1);
},
11 => function($num) {
if (($num /= 0.5) < 1)
return 0.5 * pow($num, 5);
return 0.5 * (pow(($num - 2), 5) + 2);
},
12 => function($num) {
return -cos($num * (pi() / 2)) + 1;
},
13 => function($num) {
return (-.5 * (cos(pi() * $num) - 1));
},
14 => function($num) {
return ($num == 0) ? 0 : pow(2, 10 * ($num - 1));
},
15 => function($num) {
return ($num == 1) ? 1 : -pow(2, -10 * $num) + 1;
},
16 => function($num) {
if ($num == 0)
return 0;
if ($num == 1)
return 1;
if (($num /= 0.5) < 1)
return 0.5 * pow(2, 10 * ($num - 1));
return 0.5 * (-pow(2, -10 * --$num) + 2);
},
17 => function($num) {
return -(tan(1 - ($num * $num)) - 1);
},
18 => function($num) {
return tan(1 - pow(($num - 1), 2));
},
19 => function($num) {
if (($num /= 0.5) < 1)
return -0.5 * (tan(1 - $num * $num) - 1);
return 0.5 * (tan(1 - ($num -= 2) * $num) + 1);
},
20 => function($num) {
if (($num) < (1 / 2.75)) {
return (7.5625 * $num * $num);
} else if ($num < (2 / 2.75)) {
return (7.5625 * ($num -= (1.5 / 2.75)) * $num + .75);
} else if ($num < (2.5 / 2.75)) {
return (7.5625 * ($num -= (2.25 / 2.75)) * $num + .9375);
} else {
return (7.5625 * ($num -= (2.625 / 2.75)) * $num + .984375);
}
},
21 => function($num) {
$s = 1.70158;
return ($num) * $num * (($s + 1) * $num - $s);
},
22 => function($num) {
$s = 1.70158;
return ($num = $num - 1) * $num * ((s + 1) * $num + $s) + 1;
},
23 => function($num) {
$s = 1.70158;
if (($num /= 0.5) < 1)
return 0.5 * ($num * $num * ((($s *= (1.525)) + 1) * $num - $s));
return 0.5 * (($num -= 2) * $num * ((($s *= (1.525)) + 1) * $num + $s) + 2);
},
24 => function($num) {
return -1 * pow(4, -8 * $num) * sin(($num * 6 - 1) * (2 * pi()) / 2) + 1;
},
25 => function($num) {
$s = 1.70158;
return (($num /= 0.5) < 1) ? 0.5 * ($num * $num * ((($s *= (1.525)) + 1) * $num - $s)) :
0.5 * (($num -= 2) * $num * ((($s *= (1.525)) + 1) * $num + $s) + 2);
},
26 => function($num) {
$s = 1.70158;
return $num * $num * (($s + 1) * $num - $s);
},
27 => function($num) {
$s = 1.70158;
return ($num -= 1) * $num * (($s + 1) * $num + $s) + 1;
},
28 => function($num) {
if ($num < (1 / 2.75)) {
return (7.5625 * $num * $num);
} else if ($num < (2 / 2.75)) {
return (7.5625 * ($num -= (1.5 / 2.75)) * $num + .75);
} else if ($num < (2.5 / 2.75)) {
return (7.5625 * ($num -= (2.25 / 2.75)) * $num + .9375);
} else {
return (7.5625 * ($num -= (2.625 / 2.75)) * $num + .984375);
}
},
29 => function($num) {
if ($num < (1 / 2.75)) {
return (7.5625 * $num * $num);
} else if ($num < (2 / 2.75)) {
return 2 - (7.5625 * ($num -= (1.5 / 2.75)) * $num + .75);
} else if ($num < (2.5 / 2.75)) {
return 2 - (7.5625 * ($num -= (2.25 / 2.75)) * $num + .9375);
} else {
return 2 - (7.5625 * ($num -= (2.625 / 2.75)) * $num + .984375);
}
},
30 => function($num) {
if (($num /= 0.5) < 1)
return 0.5 * pow($num, 4);
return -0.5 * (($num -= 2) * pow($num, 3) - 2);
},
31 => function($num) {
return pow($num, 4);
},
32 => function($num) {
return pow($num, 0.25);
},
33 => function($num) {
return $num;
},
34 => function($num) {
return (-cos($num * pi()) / 2) + 0.5;
},
35 => function($num) {
return 1 - $num;
},
36 => function($num) {
return sin($num * (pi() / 2));
},
37 => function($num) {
$num = $num + (rand() - 0.5) / 5;
return (-cos(($num < 0 ? 0 : $num > 1 ? 1 : $num) * pi()) / 2) + 0.5;
},
38 => function($num) {
return (-cos($num * pi() * (9 * $num)) / 2) + 0.5;
},
39 => function($num) {
return 1 - (cos($num * 4.5 * pi()) * exp(-$num * 6));
},
];
shuffle($tween);
$key = rand(0, 39); //添加其他后再增加
$func = $tween[$key];
$t = time(); //最后的时间
$rt = [];
$d = 30;
$b = 10000 + rand(-21, 21);
for ($i = 0; $i < $d; $i++) {
$v = $func($i/$d)*$d;
if($v > $d) $v = $d;
if($v < 0 && $v < -$d) $v = -$d;
$j = $t + $i;
$rt[$j] = sprintf("%.2f", $b + $v);
}
var_export($rt);
exit();