Created
March 16, 2015 17:55
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| 'use strict'; | |
| var INTERVAL = 50; | |
| class Bubble { | |
| constructor() { | |
| this.x = parseInt(window.innerWidth * Math.random(), 10); | |
| this.y = parseInt(window.innerHeight * Math.random(), 10); | |
| this.xDir = Math.random() > 0.5 ? 1 : -1; | |
| this.yDir = Math.random() > 0.5 ? 1 : -1; | |
| this.size = parseInt(Math.random() * 100) + 40; | |
| this.speed = parseInt(350 / this.size, 10); | |
| this.color = this.getColor(); | |
| // console.log(this.color); | |
| } | |
| getColor() { | |
| var red = parseInt(Math.random() * 256, 10), | |
| green = parseInt(Math.random() * 256, 10), | |
| blue = parseInt(Math.random() * 256, 10); | |
| return (red * 0x10000 + green * 0x100 + blue).toString(16); | |
| } | |
| test(a, ...b) { | |
| console.log(a); | |
| console.log(b); | |
| console.log(`foo ${this.color} bar \n`); | |
| } | |
| } | |
| for (val of values) { | |
| console.log(val); | |
| } | |
| var App = React.createClass({ | |
| getInitialState() { | |
| var bubbles = []; | |
| for (let i = 0; i < 500; i++) { | |
| bubbles.push(new Bubble()); | |
| } | |
| return {bubbles: bubbles}; | |
| }, | |
| componentDidMount() { | |
| this.interval = setInterval(this.tick, INTERVAL); | |
| }, | |
| componentWillUnmount() { | |
| clearInterval(this.interval); | |
| }, | |
| tick() { | |
| var self = this; | |
| this.state.bubbles.map(function(model) { | |
| self.move(model); | |
| }); | |
| this.setState({bubbles: this.state.bubbles}); | |
| }, | |
| move(model) { | |
| var x = model.speed * model.xDir, | |
| y = model.speed * model.yDir, | |
| target = { | |
| x: model.x + x, | |
| y: model.y + y | |
| }, | |
| size = model.size; | |
| if (target.x <= 0) { target.x = 0; model.xDir = 1; } | |
| if (target.y <= 0) { target.y = 0; model.yDir = 1; } | |
| if (target.x + size >= window.innerWidth) { target.x = window.innerWidth - size; model.xDir = -1; } | |
| if (target.y + size >= window.innerHeight) { target.y = window.innerHeight - size; model.yDir = -1; } | |
| model.x = target.x; | |
| model.y = target.y; | |
| }, | |
| render() { | |
| var bubbles = this.state.bubbles.map(function(model) { | |
| var style = { | |
| top: model.y, | |
| left: model.x, | |
| height: model.size, | |
| width: model.size, | |
| backgroundColor: model.color | |
| }; | |
| return <div className="bubble" style={style} />; | |
| }); | |
| return <div>{bubbles}</div>; | |
| } | |
| }); | |
| React.render(<App model={Bubble} />, document.body); |
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React and ES6 required to run this.