FabricJS - Clip object to bounding box

How to use a rect as a bounding box for an image or text to allow for a clipping region or bounding box.

by boulabiar

HTML

<canvas id="c" width="400" height="400"></canvas>

CSS

#c {
    border:0px solid #ccc;
}

JavaScript

var img01URL = 'https://www.google.com/images/srpr/logo4w.png';
var img02URL = 'http://fabricjs.com/lib/pug.jpg';

var canvas = new fabric.Canvas('c');

      function downloadURI(uri, name) {
        var link = document.createElement('a');
        link.download = name;
        link.href = uri;
	console.log(link);
        document.body.appendChild(link);
        link.click();
        //document.body.removeChild(link);
        //delete link;
      }


// Note the use of the `originX` and `originY` properties, which we set
// to 'left' and 'top', respectively. This makes the math in the `clipTo`
// functions a little bit more straight-forward.
var clipRect1 = new fabric.Rect({
    originX: 'left',
    originY: 'top',
    left: 180,
    top: 10,
    width: 200,
    height: 200,
    fill: '#DDD', /* use transparent for no fill */
    strokeWidth: 0,
    selectable: false
});
// We give these `Rect` objects a name property so the `clipTo` functions can
// find the one by which they want to be clipped.
clipRect1.set({
    clipFor: 'pug'
});
canvas.add(clipRect1);

// Since the `angle` property of the Image object is stored 
// in degrees, we'll use this to convert it to radians.
function degToRad(degrees) {
    return degrees * (Math.PI / 180);
}

var clipByName = function (ctx) {

    ctx.save();
    
    ctx.beginPath();
    
    var pathCode =...