Eric Socolofsky ericsoco

ericsoco / desaturate.js

Last active February 9, 2017 22:33 — forked from doctyper/desaturate.js

desaturate canvas image

	// Usage:
	// let ctx = canvas.getContext("2d");
	// let data = desaturate(0.5, ctx, canvas.width, canvas.height);
	// ctx.putImageData(data);

	function desaturate (amount, ctx, w, h) {

	let imgData = ctx.getImageData(0, 0, w, h),
	x, y, i,
	grey;