html - How to hide the overflow of photos in canvas? -


enter image description here

i trying making photo frame pattern on canvas. in want put two, 3 or maybe more photos under overlay frame. few parts of overlay frame transparent.

if upload photo1 first section of frame visible second section , uploading photo2 section 2 visible first section. depending on photo uploaded first or edited @ last overlapping other photo.

i want know how hide overflow of photo should not visible other sections. how can achieve this?

i have done far:

canvas.on({     'object:moving': onchange,     'object:scaling': onchange,     'object:rotating': onchange, });  function onchange(options) {     options.target.setcoords();     canvas.foreachobject(function (obj) {         if (obj === options.target)             return;           if (obj.id != 'cover1' && obj.id != 'cover2')             return;           if (options.target.intersectswithobject(obj)) {             // hide portion              canvas.renderall();         }      }); }

kindly provide me best solution

you need apply clipto() method onto image.

var canvas;    $(function(){      canvas = window._canvas = new fabric.canvas('canvas');      var radius = 200;      fabric.image.fromurl('http://fabricjs.com/assets/pug_small.jpg', function(img) {        img.scale(0.5).set({          left: 250,          top: 250,          angle: -15,          clipto: function (ctx) {            ctx.arc(0, 0, radius, 0, math.pi * 2, true);          }        });        canvas.add(img).setactiveobject(img);      });  });

this fiddle show technique

fiddle


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