イージング関数の動き見本（早見表）【Javascript / jQuery】

• Date：2014-08-31
• Category：Tool
• Tags：Easing, jQuery, Javascript
• Response：Comments 0
• Tweet

  

  Pocket
  
  

jQuery EasingでもおなじみのRobert Pennerのイージングの動き見本（サンプル）をJavascriptで作り直してみました。大体使われるイージングの種類は決まっていると思いますが、このサンプルで少しでもイージングの選択が楽になれば幸いです。

【Robert Penner’s Easing Functions】
http://www.robertpenner.com/easing/

■Flashで作られた元のページ
http://gizma.com/easing/

イージング見本

白いキャンバスを２箇所クリックで動作します。

イージングの種類

Linear

JavaScript

1 2 3 4

// simple linear tweening var linearTween = function (t, b, c, d) { return c*t/d + b; }

Quad

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// quadratic easing in var easeInQuad = function (t, b, c, d) { return c*(t/=d)*t + b; }   // quadratic easing out var easeOutQuad = function (t, b, c, d) { return -c *(t/=d)*(t-2) + b; }   // quadratic easing in/out var easeInOutQuad = function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t + b; return -c/2 * ((--t)*(t-2) - 1) + b; }

Sine

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14

// sinusoidal easing in var easeInSine = function (t, b, c, d) { return -c * Math.cos(t/d * (Math.PI/2)) + c + b; }   // sinusoidal easing out var easeOutSine = function (t, b, c, d) { return c * Math.sin(t/d * (Math.PI/2)) + b; }   // sinusoidal easing in/out var easeInOutSine = function (t, b, c, d) { return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b; }

Expo

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

// exponential easing in var easeInExpo = function (t, b, c, d) { return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b; }   // exponential easing out var easeOutExpo = function (t, b, c, d) { return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b; }   // exponential easing in/out var easeInOutExpo = function (t, b, c, d) { if (t==0) return b; if (t==d) return b+c; if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b; return c/2 * (-Math.pow(2, -10 * --t) + 2) + b; }

Circ

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// circular easing in var easeInCirc = function (t, b, c, d) { return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b; }   // circular easing out var easeOutCirc = function (t, b, c, d) { return c * Math.sqrt(1 - (t=t/d-1)*t) + b; }   // circular easing in/out var easeInOutCirc = function (t, b, c, d) { if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b; return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b; }

Cubic

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// cubic easing in var easeInCubic = function (t, b, c, d) { return c*(t/=d)*t*t + b; }   // cubic easing out var easeOutCubic = function (t, b, c, d) { return c*((t=t/d-1)*t*t + 1) + b; }   // cubic easing in/out var easeInOutCubic = function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t + b; return c/2*((t-=2)*t*t + 2) + b; }

Quart

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// quartic easing in var easeInQuart = function (t, b, c, d) { return c*(t/=d)*t*t*t + b; }   // quartic easing out var easeOutQuart = function (t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b; }   // quartic easing in/out var easeInOutQuart = function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t*t + b; return -c/2 * ((t-=2)*t*t*t - 2) + b; }

Quint

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// quintic easing var easeInQuint = function (t, b, c, d) { return c*(t/=d)*t*t*t*t + b; }   // quintic easing out var easeOutQuint = function (t, b, c, d) { return c*((t=t/d-1)*t*t*t*t + 1) + b; }   // quintic easing in/out var easeInOutQuint = function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b; return c/2*((t-=2)*t*t*t*t + 2) + b; }

Elastic

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

// elastic easing in var easeInElastic = function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3; if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b; }   // elastic easing out var easeOutElastic = function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3; if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b; }   // elastic easing in/out var easeInOutElastic = function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5); if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b; return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b; }

Back

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

// back easing in var easeInBack = function (t, b, c, d, s) { if (s == undefined) s = 1.70158; return c*(t/=d)*t*((s+1)*t - s) + b; }   // back easing out var easeOutBack = function (t, b, c, d, s) { if (s == undefined) s = 1.70158; return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b; }   // back easing in/out var easeInOutBack = function (t, b, c, d, s) { if (s == undefined) s = 1.70158; if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b; return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b; }

Bounce

JavaScript

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

// bounce easing in var easeInBounce = function (t, b, c, d) { return c - easeOutBounce (d-t, 0, c, d) + b; }   // bounce easing out var easeOutBounce = function (t, b, c, d) { if ((t/=d) < (1/2.75)) { return c*(7.5625*t*t) + b; } else if (t < (2/2.75)) { return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b; } else if (t < (2.5/2.75)) { return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b; } else { return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b; } }   // bounce easing in/out var easeInOutBounce = function (t, b, c, d) { if (t < d/2) return easeInBounce (t*2, 0, c, d) * .5 + b; return easeOutBounce (t*2-d, 0, c, d) * .5 + c*.5 + b; }