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canvas-pendulum

v0.0.3

Published

canvas单摆组件

Readme

canvas-pendulum

基于canvas的单摆组件。demo:https://canvas-pendulum.kai666666.com/

安装

npm install canvas-pendulum

使用

import CanvasPendulum from 'canvas-pendulum'

const canvasPendulum = new CanvasPendulum({
  el: document.getElementById('canvas'),
  ballNum: 4,
  ballStyles: [
    'https://www.kai666666.com/images/avatar.png',
    '#00ff00',
    'orange',
    'transparent',
  ],
})

canvasPendulum.start()

canvasPendulum.on('ping', (e) => {
  // 小球碰撞事件
  // let { isFrist } = e; // 是否第一个小球被碰撞了 false为最后一个小球碰撞了
  console.log('碰撞了')
})

canvasPendulum.on('ballClick', (e) => {
  // 小球被点击事件
  // let { spend,index, x, y } = e; // spend不等于0表示小球在运动
  console.log('小球被点击')
})

参数

| 参数 | 描述 | 类型 | 默认值 | | :--------: | :--------------: | :----------: | :------------------------------: | | el | DOM 元素 | string | null,(即追加到 document.body 上) | | ballNum | 小球个数 | number | 1 | | ballStyles | 小球样式 | string/attay | 'red' | | width | canvas 宽度 | number | 300 | | height | canvas 高度 | number | 150 | | T | 小球周期(毫秒) | number | 1000 | | maxAngle | 单摆最大角度 | number | 20 | | lineWidth | 线的长度 | number | (canvas 高度-小球直径)*90% |

事件

| 事件名称 | 描述 | | :-------: | :------------: | | ping | 小球碰撞事件 | | ballClick | 小球被点击事件 |