source: Dev/trunk/src/client/dojox/gauges/AnalogNeedleIndicator.js

define(["dojo/_base/declare","./AnalogIndicatorBase"],
  function(declare, AnalogIndicatorBase) { 

return declare("dojox.gauges.AnalogNeedleIndicator", [AnalogIndicatorBase], {
        // summary:
        //              An indicator for the AnalogGauge that draws a needle. The needle is drawn on the angle that corresponds
        //              to the value of the indicator.
        
        _getShapes: function(group){
                // summary:
                //              Override of dojox.gauges.AnalogLineIndicator._getShapes
                if(!this._gauge){
                        return null;
                }
                var x = Math.floor(this.width/2);
                var shapes = [];
                
                var color = this.color ? this.color : 'black';
                var strokeColor = this.strokeColor ? this.strokeColor : color;
                var strokeWidth = this.strokeWidth ? this.strokeWidth : 1;

                var stroke = {
                        color: strokeColor,
                        width: strokeWidth
                };
                
                if (color.type && !this.strokeColor){
                        stroke.color = color.colors[0].color;
                }

                var xy = (Math.sqrt(2) * (x));
                shapes[0] = group.createPath()
                                        .setStroke(stroke).setFill(color)
                                        .moveTo(xy, -xy).arcTo((2*x), (2*x), 0, 0, 0, -xy, -xy)
                                        .lineTo(0, -this.length).closePath();
                shapes[1] = group.createCircle({cx: 0, cy: 0, r: this.width})
                                        .setStroke(stroke)
                                        .setFill(color);
                return shapes;
        }
});
});