Last active
August 8, 2019 13:23
-
-
Save leemartin/046ce1d174b2ff85320557f50f660095 to your computer and use it in GitHub Desktop.
Vue Static Component
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<template> | |
<canvas ref="canvas"></canvas> | |
</template> | |
<script> | |
export default{ | |
methods: { | |
generateNoise() { | |
this.noise = document.createElement('canvas') | |
this.noise.height = window.innerHeight * 2 | |
this.noise.width = window.innerWidth * 2 | |
let noiseContext = this.noise.getContext('2d') | |
let noiseData = noiseContext.createImageData(this.noise.width, this.noise.height) | |
let buffer32 = new Uint32Array(noiseData.data.buffer) | |
let len = buffer32.length - 1 | |
while (len--) { | |
buffer32[len] = Math.random() < 0.5 ? 0 : -1 >> 0 | |
} | |
noiseContext.putImageData(noiseData, 0, 0) | |
}, | |
moveNoise() { | |
let canvas = this.$refs.canvas | |
let context = canvas.getContext('2d') | |
let x = Math.random() * canvas.width | |
let y = Math.random() * canvas.height | |
context.clearRect(0, 0, canvas.width, canvas.height) | |
context.drawImage(this.noise, -x, -y) | |
requestAnimationFrame(this.moveNoise) | |
} | |
}, | |
mounted() { | |
this.$refs.canvas.height = window.innerHeight | |
this.$refs.canvas.width = window.innerWidth | |
this.generateNoise() | |
requestAnimationFrame(this.moveNoise) | |
} | |
} | |
</script> | |
<style scoped> | |
canvas{ | |
height: 100%; | |
left: 0; | |
mix-blend-mode: soft-light; | |
opacity: 0.25; | |
pointer-events: none; | |
position: absolute; | |
top: 0; | |
width: 100%; | |
z-index: 100000; | |
} | |
</style> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment