Google Maps Offset Center

Google Maps Offset Center

// http://stackoverflow.com/questions/10656743/how-to-offset-the-center-point-in-google-maps-api-v3

function offsetCenter(map, latlng, offsetx, offsety) {
	// latlng is the apparent centre-point
	// offsetx is the distance you want that point to move to the right, in pixels
	// offsety is the distance you want that point to move upwards, in pixels
	// offset can be negative
	// offsetx and offsety are both optional
	
	var scale = Math.pow(2, map.getZoom());
	var nw = new google.maps.LatLng(
	    map.getBounds().getNorthEast().lat(),
	    map.getBounds().getSouthWest().lng()
	);
	
	var worldCoordinateCenter = map.getProjection().fromLatLngToPoint(latlng);
	var pixelOffset = new google.maps.Point((offsetx/scale) || 0,(offsety/scale) ||0)
	
	var worldCoordinateNewCenter = new google.maps.Point(
	    worldCoordinateCenter.x - pixelOffset.x,
	    worldCoordinateCenter.y + pixelOffset.y
	);
	
	var newCenter = map.getProjection().fromPointToLatLng(worldCoordinateNewCenter);
	
	map.setCenter(newCenter);
}