Opera用
// コード function CodeToImage(canvas, code){ var ip = new ImageProcessing(canvas); ip.canvas.width = code.length/3+1; ip.canvas.height = 1; for(var i = 0, n = 0; i < code.length; i++, n++){ var r = code.charCodeAt(i); var g = code.charCodeAt(++i) || 0; var b = code.charCodeAt(++i) || 0; var px = new ImageProcessing.Color(r, g, b); ip.setPixel(n, 0, px); } } function ImageToCode(canvas){ var ip = new ImageProcessing(canvas); var code = []; for(var i = 0; i < ip.canvas.width; i++){ var px = ip.getPixel(i, 0); code.push(px.r, px.g, px.b); } code = code.map(function(n){ if(n != 0) return n; }); return String.fromCharCode.apply(null, code); }