Drag and Pivot question - To simulate Fabric.js

[jdnichollsc]

Hi guys,

Dragging a sprite, the pivot does not change position, How I can update the pivot of other Sprites? http://phaser.io/sandbox/Uwipmwxr/play

if I move the "topLeft" sprite, I want the "topRight" sprite move the same distance upward based on the central point like rectangle

if I move the "topLeft" sprite, I want the "bottomLeft" sprite move the same distance to the left based on the central point like rectangle

PD: I want to simulate Fabric.js with pivots, check my example => http://codepen.io/jdnichollsc/pen/KgdRvV

Can somebody help me? 

Thanks in advance, Nicholls