Fabric rotate coords by Andrea Bogazzi June 08, 2015 HTML <canvas id="canvasCont" width="300" height="300"></canvas> <!-- To reproduce: 1. Move rect to see coords in developer console (move by 1-2 px) 2. Rotate to see new weird coords, (1-2º is enough) 3. Move again 1-2 px, and new coords... --> JavaScript var canvas = new fabric.Canvas('canvasCont'); canvas.backgroundColor = '#e3e3e3'; canvas.add(new fabric.Rect({ top: 100, left: 50, width: 150, height: 50, fill: 'red', })); canvas.observe('object:modified', function (e) { console.log("X: " + e.target.left.toString() + " Y: " + e.target.top.toString()); });