Increase clickable area of rotating point in fabric.js

Technically not possible without a hack of the fabric.js source code. This works for me with fabric.js 0.9.8:

Find this line:

          cornerHypotenuse = Math.sqrt(2 * Math.pow(this.cornersize, 2)) / 2,

Change to:

          cornerHypotenuse = (Math.sqrt(2 * Math.pow(this.cornersize, 2)) / 2)*4,


Where '4' is the size you wish to multiply the clickable area to.