build/
  data/
  tracking.js
  tracking-min.js

define({
    // The input ports of the Javascript node, name of input and type
    inputs:{
        // ExampleInput:'number',
        // Available types are 'number', 'string', 'boolean', 'color' and 'signal',
        mySignal:'signal',
        video:'domelement',
        canvas:'domelement',
        img:'reference'
    },

    // The output ports of the Javascript node, name of output and type
    outputs:{
        // ExampleOutput:'string',
        posX:'number',
        posY:'number'
    },

    // All signal inputs need their own function with the corresponding name that
    // will be run when a signal is received on the input.
    mySignal:function(inputs,outputs) {
        // ...
        var _this = this;
        inputs.video.setAttribute("id",'video');
          var video = inputs.video;
          var canvas = inputs.canvas;
          var context = canvas.getContext('2d');

          var tracker = new tracking.ObjectTracker('face');
          tracker.setInitialScale(4);
          tracker.setStepSize(2);
          tracker.setEdgesDensity(0.1);

          tracking.track('#video', tracker, { camera: true });

          tracker.on('track', function(event) {
            context.clearRect(0, 0, canvas.width, canvas.height);

            event.data.forEach(function(rect) {
                outputs.posX = rect.x;
                outputs.posY = rect.y;
                _this.flagOutputDirty("posX");
                _this.flagOutputDirty("posY");
            });
          });
    },

    // This function will be called when any of the inputs have changed
    change:function(inputs,outputs) {
        // ...
    }
})