Draw graphics on a canvas through simple object-oriented dom-like API. Vue & React/Preact supported.

README.md

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spritejs.org

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SpriteJS is a cross-platform lightweight 2D render object model.

Manipulate the sprites in canvas as you do with the DOM elements.

Features

Quick Start

SpriteJS - spritejs.org

<script src="https://unpkg.com/spritejs/dist/spritejs.min.js"></script>
<div id="container"></div>
<script>
    const imgUrl = 'https://s5.ssl.qhres.com/static/ec9f373a383d7664.svg'
    const {Scene, Sprite} = spritejs;
    const paper = new Scene('#container', { viewport: [400, 400] })

    const sprite = new Sprite(imgUrl)
    sprite.attr({
      bgcolor: '#fff',
      pos: [0, 0],
      size: [400, 400],
      borderRadius: '200'
    })

    paper.layer().appendChild(sprite)
</script>

With Document CSS - Just set useDocumentCSS option to true, spritejs will auto load style rules from the document.

<script src="https://unpkg.com/spritejs/dist/spritejs.min.js"></script>
<div id="container"></div>
<style>
  sprite.myclass {
    background-color: red;
    --sprite-x: 0;
    --sprite-y: 0;
    width: 400px;
    height: 400px;
    border-radius: 200px;
  }
</style>
<script>
    const imgUrl = 'https://s5.ssl.qhres.com/static/ec9f373a383d7664.svg'
    const {Scene, Sprite} = spritejs;
    const paper = new Scene('#container', {
      viewport: [400, 400],
      useDocumentCSS: true,
    })

    const sprite = new Sprite(imgUrl)
    sprite.className = 'myclass';

    paper.layer().appendChild(sprite)
</script>

React JSX - react.spritejs.org

import React from 'react';
import ReactDOM from 'react-dom';
import {Scene} from 'sprite-react';

class Block extends React.Component {
  constructor(props) {
    super(props);
    this.state = {color: 'green'};
  }

  handleClick() {
    this.setState({
      color: 'blue',
    });
  }

  render() {
    return (
      <sprite pos={[100, 100]} bgcolor={this.state.color} size={[50, 50]} onClick={this.handleClick.bind(this)}></sprite>
    );
  }
}


ReactDOM.render(
  <Scene>
    <layer id="fglayer" handleEvent={true}>
      <group>
        <sprite pos={[200, 100]} size={[50, 50]} bgcolor="red" onClick={function () { this.attr('bgcolor', 'blue') } }></sprite>
        <Block/>
      </group>
    </layer>
  </Scene>,
  document.getElementById('app')
);

Vue Component - vue.spritejs.org

<template>
  <scene id="container" :viewport="[300, 300]">
    <layer>
      <sprite
        :textures="imgUrl"
        bgcolor="#fff"
        :pos="[0,0]"
        :size="[400, 400]"
        borderRadius="200"
      />
    </layer>
  </scene>
</template>

<script>
export default {
  data() {
    return {
      imgUrl: 'https://s5.ssl.qhres.com/static/ec9f373a383d7664.svg'
    }
  }
}
</script>
Learn more at spritejs.org

Usage

In browser:

<script src="https://unpkg.com/spritejs/dist/spritejs.min.js"></script>

With NPM:

npm install spritejs --save

Examples

Basic

With D3

Compatible with d3.js.

With Proton

Proton is a lightweight and powerful javascript particle engine.

With Matter-js

Matter.js is a JavaScript 2D rigid body physics engine.

API Doc

Build

Build with NPM

npm run build

Build Doc

npm run build-doc

Tests

npm test

31 passed

File % Stmts % Branch % Funcs % Lines Uncovered Lines
All files 97.7 86.73 95.24 97.8
src 97.28 86.13 92.31 97.39
index.js 100 50 100 100 24
layer.js 96.04 83.33 100 95.92 28,42,53,55
resource.js 97.73 80 85.71 97.56 28
scene.js 97.98 89.7 90.91 98.31 219,222,267,300
sprite.js 94.12 76.19 100 93.75 28,55
src/platform 100 91.43 100 100
index.js 100 91.43 100 100 68,82,139

Server-side Render

Spritejs (>= 1.15.0) can render sprites' canvas on server-side. Depend on node-canvas.

sudo apt-get install libcairo2-dev libjpeg-dev libpango1.0-dev librsvg2-dev libgif-dev build-essential g++
npm install canvas@next
const fs = require('fs')

const {Scene, Label} = require('spritejs')
const scene = new Scene('#test', 800, 600)

const bglayer = scene.layer('bg', {handleEvent: false})

const text = new Label('Hello Sprite!')

text.attr({
  anchor: [0.5, 0.5],
  pos: [400, 300],
  font: '46px Arial',
  color: 'blue',
  bgcolor: 'white',
  textAlign: 'center',
})

bglayer.append(text)

;(async function () {
  const canvas = await scene.snapshot()
  fs.writeFileSync('snap.png', canvas.toBuffer())
}())

Contributors

Thanks goes to these wonderful people (emoji key):


betseyliu

💻 📖

Shero0311

📖

有马

📖 💻

文蔺

💻 🐛

蔡斯杰

💻 📖

Shaofei Cheng

💻 📖

公子

💻

justemit

💻 📖 🐛

Welefen Lee

💻

YUPENG12138

📖

xinde

🐛

ggvswild

🐛

License

MIT