Dividing PNG into layers (HTML5, JS)
I'm working for a small non commercial project, what I'm stuck on right now is that the script picks up a png image, however when I exported it, there are two layers, how do I divide this image into two different layers and manipulate one once its loaded up into convas?
<html>
<head>
<title>test</title>
<script type="text/javascript">
function startup() {
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var img = new Image();
img.src = 'brushes.开发者_如何学Cpng';
img.onload = function() {
ctx.translate(32, 120);
ctx.rotate(40 * Math.PI/180);
ctx.drawImage(img, -32, -120, 64, 120);
}
}
</script>
</head>
<body onload='startup();'>
<canvas id="canvas" style="position: absolute; left: 300px; top: 300px;" width="800" height="800"></canvas>
</body>
As far as I know PNG does not have any layers, so you would need to save one image for each layer to manipulate them separately.
加载中,请稍侯......
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