Source: maps/limbs/location/CentreLocationStrategy.js

/**
 * @class
 * A location strategy that returns the centre of the target object.
 * For polygons and polylines, the centre is computed as the centre of the bounding box and therefore
 * may not lie on or in the shape.
 * 
 * @constructor
 * @param {lucid.maps.limbs.location.CentreLocationStrategyOptions} options  The options controlling the location calculation.
 */
lucid.maps.limbs.location.CentreLocationStrategy = function( options )
{
	lucid.maps.limbs.location.LocationStrategy.apply( this, [ options ] );
	
	
	this.computeMarkerLocation = function( target )
	{
		return target.getPosition();
	};
	
	this.computePolylineLocation = function( target )
	{
		// TODO Cache the result of computeBounds to improve performance.
		//      Provide an option in the CentreLocationStrategyOptions to set the cache class.
		//      The cache class should provide a function to clear a value out of the cache.
		return lucid.maps.geometry.computeBounds( target ).getCenter();
	};
	
	this.computePolygonLocation = function( target )
	{
		return lucid.maps.geometry.computeBounds( target ).getCenter();
	};
	
	this.computeRectangleLocation = function( target )
	{
		return target.getBounds().getCenter();
	};
	
	this.computeCircleLocation = function( target )
	{
		return target.getCenter();
	};
	
};


/**
 * @type {object}
 * @augments lucid.maps.limbs.location.LocationStrategyOptions
 */
lucid.maps.limbs.location.CentreLocationStrategyOptions = {};