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small-tween

v1.0.0

Published

fork from @tween/tween.js(v25.0.0), and rebuild with tsup.

Downloads

2

Readme

small-tween (fork from @tween/tween.js)

[![NPM Version][npm-image]][npm-url] [![CDNJS][cdnjs-image]][cdnjs-url] [![NPM Downloads][downloads-image]][downloads-url] [![Build and Tests][ci-image]][ci-url]

简介

  • 用于简单动画的 JavaScript (TypeScript) 补间引擎,结合优化的 Robert Penner 方程式。
  • 针对 @tween/tween.js 动画库在引用方式上做了精简 (按需引用), 追求极致的最小包体积. (有些功能可能被精简掉了)
  • 如有功能缺失, 请使用原始库 @tween/tween.js

精简后体积

Usage

Install

yarn add small-tween


Exmaple

import { Tween } from 'small-tween'
import { Quadratic } from 'small-tween/easing/quadratic'
import { Linear } from 'small-tween/interpolation/linear'

const box = document.getElementById('box') // 获取我们想要设置动画的元素。
const coords = { x: 0, y: 0 } // 从 (0, 0) 开始
const tween = new Tween(coords, false)
    .to({ x: 300, y: 200 }, 1000) // 在 1 秒内移动到 (300, 200)。
    .easing(TWEEN.Easing.Quadratic.InOut) // 使用缓动函数使动画流畅。
    .onUpdate(() => {
        // 在 tween.js 更新“坐标”后调用。
        // 使用 CSS transform 将 'box' 移动到 'coords' 描述的位置。
        box.style.setProperty('transform', 'translate(' + coords.x + 'px, ' + coords.y + 'px)')
    })
    .start() // 立即开始 tween。

// 设置动画循环。
function animate(time) {
    tween.update(time)
    requestAnimationFrame(animate)
}
requestAnimationFrame(animate)
  • 使用极简版本
import { Tween } from 'small-tween/mini' // # 改动这行引用
import { Quadratic } from 'small-tween/easing/quadratic'

const box = document.getElementById('box') // 获取我们想要设置动画的元素。
const coords = { x: 0, y: 0 } // 从 (0, 0) 开始
const tween = new Tween(coords, false)
    .to({ x: 300, y: 200 }, 1000) // 在 1 秒内移动到 (300, 200)。
    .easing(TWEEN.Easing.Quadratic.InOut) // 使用缓动函数使动画流畅。
    .onUpdate(() => {
        // 在 tween.js 更新“坐标”后调用。
        // 使用 CSS transform 将 'box' 移动到 'coords' 描述的位置。
        box.style.setProperty('transform', 'translate(' + coords.x + 'px, ' + coords.y + 'px)')
    })
    .start() // 立即开始 tween。

// 设置动画循环。
function animate(time) {
    tween.update(time)
    requestAnimationFrame(animate)
}
requestAnimationFrame(animate)

在 CodePen 上试试这个例子

特性

  • 做一件事并且只做一件事:补间属性
  • 不处理 CSS 单位(例如附加 px
  • 不插值颜色
  • 缓动函数可在 Tween 之外重复使用
  • 也可以使用自定义缓动函数

Fork From

  • 原始仓库: https://github.com/tweenjs/tween.js
  • 原始 npm: https://www.npmjs.com/package/@tweenjs/tween.js