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lbb2446 / anime

JavaScript Animation Engine

Home Page:http://animejs.com

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anime.js

Anime (/ˈæn.ə.meɪ/) 是一个轻量级的JS动画库. 可以作用于所有 CSS 属性, 独立的 CSS 变换, SVG 和任意 DOM 属性, 以及 JavaScript 对象.

⚠️ 从 v1.x如何迁移 ? 请移步 changelog ⚠️

主要功能

Demo 和 例子

浏览器支持情况

Chrome Safari IE / Edge Firefox Opera
24+ 6+ 10+ 32+ 15+

Usage

$ npm install animejs
# OR
$ bower install animejs
import anime from 'animejs'

手动下载 and link anime.min.js in your HTML:

<script src="anime.min.js"></script>

然后开始开发:

anime({
  targets: 'div',
  translateX: [
    { value: 100, duration: 1200 },
    { value: 0, duration: 800 }
  ],
  rotate: '1turn',
  backgroundColor: '#FFF',
  duration: 2000,
  loop: true
});

API

Targets（目标）

targets 属性定义elements或者JS对象发生动画.

Types Examples
CSS Selectors(css选择器) 'div', '.item', 'path', '#el path' ...
DOM Element(dom对象) document.querySelector('.item')
NodeList (dom对象集合) document.querySelectorAll('.item')
Object (js对象) {prop1: 100, prop2: 200}
Array (数组) ['div', '.item', domNode]

➜ Targets 案例

Animatable properties

Types Examples
CSS opacity, backgroundColor, fontSize ...
Transforms translateX, rotate, scale ...
Object properties Object中所有包含数值类型的属性
DOM attributes 所有 DOM 包含 数值 属性
SVG attributes 所有 SVG 包含 数值 属性

➜ Animatable properties examples

CSS

所有CSS属性都能被做动画:

anime({
  targets: 'div',
  left: '80%', // Animate all divs left position to 80%
  opacity: .8, // Animate all divs opacity to .8
  backgroundColor: '#FFF' // Animate all divs background color to #FFF
});

➜ CSS properties example

独特的 CSS 转换

CSS 中的transforms类被单独提取出来:

anime({
  targets: 'div',
  translateX: 250, // Animate all divs translateX property to 250px
  scale: 2, // Animate all divs scale to 2
  rotate: '1turn' // Animate all divs rotation to 1 turn
});

➜ CSS Transforms example

JavaScript Object 属性

所有 Object 包含数值的属性都可以做动画:

var myObject = {
  prop1: 0,
  prop2: '0%'
}

anime({
  targets: myObject,
  prop1: 50, // Animate the 'prop1' property from myObject to 50
  prop2: '100%' // Animate the 'prop2' property from myObject to 100%
});

➜ Object properties example

DOM 属性

所有 Dom属性 包含数值的属性都可以做动画:

<input value="0">
anime({
  targets: input,
  value: 1000, // Animate the input value to 1000
  round: 1 // Remove decimals by rounding the value
});

➜ DOM Attributes example

SVG Attributes

所有 SVG属性 包含数值的属性都可以做动画:

<svg width="128" height="128" viewBox="0 0 128 128">
  <polygon points="64 68.73508918222262 8.574 99.9935923731656 63.35810017508558 67.62284396863708 64 3.993592373165592 64.64189982491442 67.62284396863708 119.426 99.9935923731656"></polygon>
</svg>
anime({
  targets: 'polygon',
  points: '64 128 8.574 96 8.574 32 64 0 119.426 32 119.426 96'
});

➜ SVG Attributes example

属性参数

定义了 duration, delay and easing 针对所有的动画属性.
可以对这些属性做单独或者全部的操作:

Names Defaults Types Info
duration 1000 number, function 毫秒
delay 0 number, function 毫秒
easing 'easeOutElastic' function 缓动函数类型
elasticity 500 number, function 范围 [0 - 1000]
round false number, boolean, function Power of 10 
anime({
  translateX: {
    value: 250,
    duration: 800
  },
  rotate: {
    value: 360,
    duration: 1800,
    easing: 'easeInOutSine'
  },
  scale: {
    value: 2,
    duration: 1600,
    delay: 800,
    easing: 'easeInOutQuart'
  },
  delay: 250 // All properties except 'scale' inherit 250ms delay
});

➜ Property parameters examples

Function based property parameters

对每一个动画的目标可以得到不同的属性参数.
function 默认返回3个参数: target, index, targetsLength.

anime({
  targets: 'div',
  translateX: 250,
  rotate: 180,
  duration: function(target) {
    // Duration based on every div 'data-duration' attribute
    return target.getAttribute('data-duration');
  },
  delay: function(target, index) {
    // 100ms delay multiplied by every div index, in ascending order
    return index * 100;
  },
  elasticity: function(target, index, totalTargets) {
    // Elasticity multiplied by every div index, in descending order
    return 200 + ((totalTargets - index) * 200);
  }
});

➜ Function based parameters examples

动画参数

Parameters relative to the animation to specify the direction, the number of loops or autoplay.

Names Defaults Types
loop false number, boolean
direction 'normal' 'normal'（正常）, 'reverse'（颠倒）, 'alternate'（交替）
autoplay true boolean 
anime({
  targets: 'div',
  translateX: 100,
  duration: 2000,
  loop: 3, // Play the animation 3 times
  direction: 'reverse', // Play the animation in reverse
  autoplay: false // Animation paused by default
});

➜ Animation parameters examples

属性值

单个值

定义 动画的最终值
Start value is the original target value, or default transforms value.

Types Examples Infos
Number 100 Automatically add original or default unit if needed
String '10em', '1turn', 'M21 1v160', '50%' Must contains at least one numerical value
Relative values '+=100px', '-=20em', '*=4' 加、减、乘原属性值
Colors '#FFF', 'rgb(255,0,0)', 'hsl(100, 20%, 80%)' 接受 3 or 6位十六进制, rgb, 或者 hsl 值

➜ Values examples

anime({
  targets: 'div',
  translateX: 100, // Add 'px' by default (from 0px to 100px)
  rotate: '1turn', // Use 'turn' as unit (from 0turn to 1turn)
  scale: '*=2', // Multiply the current scale value by 2 (from 1 to (1 * 2))
  backgroundColor: '#FFF', // Animate the background color to #FFF (from 'rgb(0,0,0)' to 'rgb(255,255,255)')
  duration: 1500
});

From > To values

使用动画开始于某一个值

anime({
  targets: 'div',
  translateX: [100, 200], // Translate X from 100 to 200
  rotate: ['.5turn', '1turn'], // Rotate from 180deg to 360deg
  scale: ['*=2', 1], // Scale from 2 times the original value to 1,
  backgroundColor: ['rgb(255,0,0)', '#FFF'], // Will transition the background color from red to white
  duration: 1500
});

➜ Specific initial value example

Function based values

与 function based property parameters一样.
对每一个动画的目标可以得到不同的属性参数.
function 默认返回3个参数: target, index, targetsLength.

anime({
  targets: 'div',
  translateX: function(el) {
    return el.getAttribute('data-x');
  },
  translateY: function(el, i) {
    return 50 + (-50 * i);
  },
  scale: function(el, i, l) {
    return (l - i) + .25;
  },
  rotate: function() { return anime.random(-360, 360); },
  duration: function() { return anime.random(800, 1600); },
  delay: function() { return anime.random(0, 1000); }
});

➜ Function based value example

Keyframes

Keyframes(关键帧) 使用 对象数组定义.
Instance's duration is divided by the number of keyframes of each properties if not specified.

anime({
  targets: 'div',
  translateX: [
    { value: 250, duration: 1000, delay: 500, elasticity: 0 },
    { value: 0, duration: 1000, delay: 500, elasticity: 0 }
  ],
  translateY: [
    { value: -40, duration: 500, elasticity: 100 },
    { value: 40, duration: 500, delay: 1000, elasticity: 100 },
    { value: 0, duration: 500, delay: 1000, elasticity: 100 }
  ],
  scaleX: [
    { value: 4, duration: 100, delay: 500, easing: 'easeOutExpo' },
    { value: 1, duration: 900, elasticity: 300 },
    { value: 4, duration: 100, delay: 500, easing: 'easeOutExpo' },
    { value: 1, duration: 900, elasticity: 300 }
  ],
  scaleY: [
    { value: [1.75, 1], duration: 500 },
    { value: 2, duration: 50, delay: 1000, easing: 'easeOutExpo' },
    { value: 1, duration: 450 },
    { value: 1.75, duration: 50, delay: 1000, easing: 'easeOutExpo' },
    { value: 1, duration: 450 }
  ]
});

➜ Specific keyframes properties example

Timeline(时间轴)

Basic timeline

通过创建一个时间轴来播放动画序列:

var myTimeline = anime.timeline();

时间轴可以接受与动画对象一样的参数: direction, loop and autoplay.

var myTimeline = anime.timeline({
  direction: 'alternate',
  loop: 3,
  autoplay: false
});

在时间轴上新增一个动作 .add() :

myTimeline
  .add({
    targets: '.square',
    translateX: 250
  })
  .add({
    targets: '.circle',
    translateX: 250
  })
  .add({
    targets: '.triangle',
    translateX: 250
  });

可以通过myTimeline.children获取子对象

➜ Basic timeline example

Timeline animations offsets（时间轴动画补间？）

offset 在时间轴中定义开始时间

Relative offset（相对时间）

Defines starting time relative to the previous animations duration.

Types Examples Infos
+= '+=100' Starts 100ms after the previous animation ends（后延）
-= '-=100' Starts 100ms before the previous animation ends（前推）
*= '*=2' Starts at 2 times the previous animations duration 
myTimeline
  .add({
    targets: '.square',
    translateX: 250
  })
  .add({
    targets: '.circle',
    translateX: 250,
    offset: '-=600' // Starts 600ms before the previous animation ends
  })
  .add({
    targets: '.triangle',
    translateX: 250,
    offset: '-=800' // Starts 800ms before the previous animation ends
  });

➜ Relative offset example

Absolute offset（绝对时间）

定义了一个绝对的起始时间与数量在时间轴上

myTimeline
  .add({
    targets: '.square',
    translateX: 250,
    offset: 1000 // Starts at 1000ms
  })
  .add({
    targets: '.circle',
    translateX: 250,
    offset: 500 // Starts at 500ms
  })
  .add({
    targets: '.triangle',
    translateX: 250,
    offset: 0 // Starts at 0ms
  });

➜ Absolute offset example

回放控制

Play, pause, restart, seek animations or timelines.

Play / Pause

var playPauseAnim = anime({
  targets: 'div',
  translateX: 250,
  direction: 'alternate',
  loop: true,
  autoplay: false // prevent the instance from playing
});

playPauseAnim.play(); //  Manually play
playPauseAnim.pause(); //  Manually pause

➜ Play / Pause example

Restart

var restartAnim = anime({
  targets: 'div',
  translateX: 250,
  direction: 'alternate',
  loop: true,
  autoplay: false
});

restartAnim.restart(); // Restart the animation and reset the loop count / current direction

➜ Restart example

Reverse

var reverseAnim = anime({
  targets: 'div',
  translateX: 250,
  direction: 'alternate',
  loop: true
});

reverseAnim.reverse(); // Change the animation direction

➜ Reverse example

Seek（回溯）

回溯到选定的时间点

var seekAnim = anime({
  targets: 'div',
  translateX: 250,
  delay: function(el, i, l) { return i * 100; },
  elasticity: 200,
  autoplay: false
});

seekAnim.seek(500); // Set the animation current time to 500ms

➜ Seek example

Callbacks

执行一个函数在开始,更新或完成的时候

Names Types Arguments Info
update function animation Object Called at time = 0
begin function animation Object Called after animation delay is over
complete function animation Object Called only after all the loops are completed

➜ Callbacks examples

Update

update() 在播放的时候,每一帧都会触发.

var myAnimation = anime({
  targets: '#update .el',
  translateX: 250,
  delay: 1000,
  update: function(anim) {
    console.log(anim.currentTime + 'ms'); // Get current animation time with `myAnimation.currentTime`, return value in ms.
    console.log(anim.progress + '%'); // Get current animation progress with `myAnimation.progress`, return value in %
  }
});

➜ Update example

Begin

begin() 会毁掉一次，在delay结束的时候

var myAnimation = anime({
  targets: '#begin .el',
  translateX: 250,
  delay: 1000,
  begin: function(anim) {
    console.log(anim.began); // true after 1000ms
  }
});

Check if the animation has begun with myAnimation.began, return true or false.

➜ Begin example

Run

run() 在delay结束的时候后的每一帧.

var myAnimation = anime({
  targets: '#run .el',
  translateX: 250,
  delay: 1000,
  run: function(anim) {
    console.log(anim.currentTime);
  }
});

➜ Run example

Complete

complete() 动画结束的时候调用.

var myAnimation = anime({
  targets: '#complete .el',
  translateX: 250,
  complete: function(anim) {
    console.log(anim.completed);
  }
});

Check if the animation has finished with myAnimation.completed, return true or false.

➜ Complete example

Promises

myAnimation.finished 一旦动画运行结束返回一个Promise对象 ？？returns a Promise object which will resolve once the animation has finished running.

➜ Promises example

SVG

Motion path

使 DOM elements沿着SVGpath运动和翻转:

// Create a path `Object`
var path = anime.path('#motionPath path');

var motionPath = anime({
  targets: '#motionPath .el',
  translateX: path('x'), // Follow the x values from the path `Object`
  translateY: path('y'), // Follow the y values from the path `Object`
  rotate: path('angle')  // Follow the angle values from the path `Object`
});

➜ Motion path example

Morphing（变形）

使动画在两个SVG图形之间的过渡:

<svg class="shape" width="128" height="128" viewBox="0 0 128 128">
  <polygon points="64 68.64 8.574 100 63.446 67.68 64 4 64.554 67.68 119.426 100"></polygon>
</svg>
var svgAttributes = anime({
  targets: '.shape polygon',
  points: '64 128 8.574 96 8.574 32 64 0 119.426 32 119.426 96'
});

形状需要相同数量的点.

➜ Morphing example

Line drawing(绘线)

照着一个SVG的形状的线条绘制动画:

anime({
  targets: '.shape path',
  strokeDashoffset: [anime.setDashoffset, 0]
});

➜ Line drawing example

Easing functions（缓动函数）

The easing parameter can accept either a string or a custom Bézier curve coordinates (array).

Types Examples Infos
String 'easeOutExpo' 已有的函数名称
Array [.91,-0.54,.29,1.56] 定义贝塞尔曲线坐标轴 ([x1, y1, x2, y2])

Built in functions

Linear easing: 'linear'（线性，平滑）

Penner's equations:

easeIn easeOut easeInOut
easeInQuad easeOutQuad easeInOutQuad
easeInCubic easeOutCubic easeInOutCubic
easeInQuart easeOutQuart easeInOutQuart
easeInQuint easeOutQuint easeInOutQuint
easeInSine easeOutSine easeInOutSine
easeInExpo easeOutExpo easeInOutExpo
easeInCirc easeOutCirc easeInOutCirc
easeInBack easeOutBack easeInOutBack
easeInElastic easeOutElastic easeInOutElastic 
！！https://codepen.io/juliangarnier/pen/mWdraw 这个地址可以直接调试
这部分的贝塞尔曲线参数是我从他的源码中拿过来的和上面的table一一对应
在谷歌控制台中 使用如下样式再点击图例可以看到具体图形运动轨迹: transition: all 1s cubic-bezier(0.46, 0.03, 0.52, 0.96)
 In: [
      [0.550, 0.085, 0.680, 0.530], /* inQuad */
      [0.550, 0.055, 0.675, 0.190], /* inCubic */
      [0.895, 0.030, 0.685, 0.220], /* inQuart */
      [0.755, 0.050, 0.855, 0.060], /* inQuint */
      [0.470, 0.000, 0.745, 0.715], /* inSine */
      [0.950, 0.050, 0.795, 0.035], /* inExpo */
      [0.600, 0.040, 0.980, 0.335], /* inCirc */
      [0.600,-0.280, 0.735, 0.045], /* inBack */
      elastic /* inElastic */
    ],
    Out: [
      [0.250, 0.460, 0.450, 0.940], /* outQuad */
      [0.215, 0.610, 0.355, 1.000], /* outCubic */
      [0.165, 0.840, 0.440, 1.000], /* outQuart */
      [0.230, 1.000, 0.320, 1.000], /* outQuint */
      [0.390, 0.575, 0.565, 1.000], /* outSine */
      [0.190, 1.000, 0.220, 1.000], /* outExpo */
      [0.075, 0.820, 0.165, 1.000], /* outCirc */
      [0.175, 0.885, 0.320, 1.275], /* outBack */
      (a, p) => t => 1 - elastic(a, p)(1 - t) /* outElastic */
    ],
    InOut: [
      [0.455, 0.030, 0.515, 0.955], /* inOutQuad */
      [0.645, 0.045, 0.355, 1.000], /* inOutCubic */
      [0.770, 0.000, 0.175, 1.000], /* inOutQuart */
      [0.860, 0.000, 0.070, 1.000], /* inOutQuint */
      [0.445, 0.050, 0.550, 0.950], /* inOutSine */
      [1.000, 0.000, 0.000, 1.000], /* inOutExpo */
      [0.785, 0.135, 0.150, 0.860], /* inOutCirc */
      [0.680,-0.550, 0.265, 1.550], /* inOutBack */
      (a, p) => t => t < .5 ? elastic(a, p)(t * 2) / 2 : 1 - elastic(a, p)(t * -2 + 2) / 2 /* inOutElastic */
    ]

➜ Built in easing functions examples

Usage:

anime({
  targets: 'div',
  translateX: 100,
  easing: 'easeOutExpo' // Default 'easeOutElastic'
});

Elasticity of Elastic easings can be configured with the elasticity parameters:

anime({
  targets: 'div',
  translateX: 100,
  easing: 'easeOutElastic',
  elasticity: 600 // Default 500, range [0-1000]
});

➜ Elasticity examples

Custom Bézier curves

Define a Bézier curve with an Array of 4 coordinates:

anime({
  targets: 'div',
  translateX: 100,
  easing: [.91,-0.54,.29,1.56]
});

Custom Bézier curves coordinates can be generated here https://matthewlein.com/ceaser/

➜ Custom Bézier curves example

Defining custom functions

扩大已经有的动画函数在anime.easings里.

// Add custom function
anime.easings['myCustomEasingName'] = function(t) {
  return Math.pow(Math.sin(t * 3), 3);
}

// Usage
anime({
  targets: 'div',
  translateX: 100,
  easing: 'myCustomEasingName'
});

// add custom Bézier curve function
anime.easings['myCustomCurve'] = anime.bezier([.91,-0.54,.29,1.56]);

// Usage
anime({
  targets: 'div',
  translateX: 100,
  easing: 'myCustomCurve'
});

➜ Custom easing functions example

Helpers

anime.speed = x

Change all animations speed (from 0 to 1).

anime.speed = .5; // Slow down all animations by half of their original speed

anime.running

Return an Array of all active Anime instances.

anime.running;

anime.remove(target)

Remove one or multiple targets from the animation.

anime.remove('.item-2'); // Remove all elements with the class 'item-2'

anime.getValue(target, property)

Get current valid value from an element.

anime.getValue('div', 'translateX'); // Return '100px'

anime.path(pathEl)

Create a path Function for motion path animation.
Accepts either a DOM node or CSS selector.

var path = anime.path('svg path', 'translateX'); // Return path(attribute)

➜ Motion path example

anime.setDashoffset(pathEl)

An helper for line drawing animation.
Sets the 'stroke-dasharray' to the total path length and return its value.

anime({
  targets: '.shape path',
  strokeDashoffset: [anime.setDashoffset, 0]
});

➜ Line drawing example

anime.easings

Return the complete list of built in easing functions

anime.easings;

anime.bezier(x1, x2, y1, y2)

Return a custom Bézier curve easing function

anime.bezier(x1, x2, y1, y2); // Return function(t)

anime.timeline()

Create a timeline to synchronise other Anime instances.

var timeline = anime.timeline();
timeline.add([instance1, instance2, ...]);

➜ Timeline examples

anime.random(x, y)

Generate a random number between two numbers.

anime.random(10, 40); // Will return a random number between 10 and 40

====

MIT License. © 2017 Julian Garnier.

Thanks to Animate Plus and Velocity that inspired anime.js API, BezierEasing and jQuery UI for the easing system. Tim Branyen For the Promise implementation.

About

JavaScript Animation Engine

http://animejs.com

License:MIT License

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