JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.html5canvastutorials.com/libraries/kinetic-v4.0.5.js"></script>
<div id="canvas-wrapper"></div>

CSS

#canvas-wrapper {
    width: 600px;
    height: 600px;
}

JavaScript

$(function() {

    initStage();

});




function initStage(images) {
    var stage = new Kinetic.Stage({
        container: 'canvas-wrapper',
        width: $('#canvas-wrapper').width(),
        height: $('#canvas-wrapper').height(),
    });
    var layer = new Kinetic.Layer();

    var thingGroup = new Kinetic.Group({
        x: 140,
        y: 100,
        draggable: true
    });

    layer.add(thingGroup);
    stage.add(layer);


    var imageObj = new Image();
    imageObj.src = 'http://www.html5canvastutorials.com/demos/assets/darth-vader.jpg';
    imageObj.onload = function() {
        // Add image to group
        var thing = new Kinetic.Image({
            x: 0,
            y: 0,
            image: imageObj,
            name: 'image'
        });
        thingGroup.add(thing);

        // Add anchors to group
        addAnchor(thingGroup, 0, 0, "topLeft");
        addAnchor(thingGroup, imageObj.width, 0, "topRight");
        addAnchor(thingGroup, imageObj.width, imageObj.height, "bottomRight");
        addAnchor(thingGroup, 0, imageObj.height, "bottomLeft");

        stage.draw();
    };


    thingGroup.on("dragstart", function() {
        this.moveToTop();
    });

    stage.draw();
}




function update(group, activeAnchor) {
    var topLeft     = group.get(".topLeft")[0];
    var topRight     = group.get(".topRight")[0];
    var bottomRight = group.get(".bottomRight")[0];
    var bottomLeft     = group.get(".bottomLeft")[0];
    var image         = group.get(".image")[0];

    // update anchor positions
    switch(activeAnchor.getName()) {
        case "topLeft":

            topRight.attrs.y = activeAnchor.attrs.y;
            topRight.attrs.x = activeAnchor.attrs.x + image.getWidth();
            bottomLeft.attrs.x = activeAnchor.attrs.x;
            bottomRight.attrs.x = activeAnchor.attrs.x + image.getWidth();

            break;
        case "topRight":
            topLeft.attrs.y = activeAnchor.attrs.y;
            bottomRight.attrs.x =...