raster drawing NO SVG v1

this is the drawing program for raster drawing implmentation

by Nick Hulea

HTML

<script src="http://cdn.eyahuska.com/paper.js"></script>
<canvas resize="true" id="canvas-1" style="width:100%;"></canvas>
<script type="text/paperscript" canvas="canvas-1">
    var b, d, g, c, r, i, v, n, brush;
    var ebd = null;
    var iArray = {};
    var dArray = [],
        rArray = {},
        rasterArray = [],
        topGroup = new Group(),
        mousePath = null;

    var rastera = new Raster({
        source: 'http://cdn.eyahuska.com/six.jpg',
        // position: view.center,
        size: view.bounds
    });

    rastera.on('load', function() {
        loaded = true;
        onResize();
    });

    var rasterb = new Raster({
        source: 'http://cdn.eyahuska.com/six.jpg',
        position: view.center,
        size: view.bounds
    });

    rasterb.on('load', function() {
        loaded = true;
        onResize();
    });

    var brush_origin = new Path.Circle({
        radius: 50,
        strokeColor: 'red',
        strokeWeight: 10
    });



    tool.fixedDistance = 120;


    function onMouseMove(event) {
        brush_origin.position = event.point;
    }

    function onMouseDown(event) {

        brush = brush_origin.clone();

        //normal array of all paths on canvas sweet!
        dArray.push(brush);
        //console.log(dArray);
        //

        //associative array of all paths on canvas sweet!
        rArray[brush.id] = 0;
        //console.log(rArray);
        //

        brush.position = event.point;
        mousePath = topGroup.children[0];
        addBrushStroke();

    }

    function onMouseDrag(event) {

        r = new Raster();
        r.source = 'http://cdn.eyahuska.com/one.jpg';
        r.position = view.bounds;
        rasterArray.push(r);
        r.on('load', function() {
            loaded = true;
            onResize();
        });
        topGroup.addChild(r);
        topGroup.insertChild(0, new Path());
        topGroup.clipped = true;



        if (!mousePath) return;
        brush.position =...