goog.provide('ol.loc');

goog.require('ol.Loc');


/**
 * @typedef {ol.Loc|Array.<number>|Object} loc Location.
 */
ol.LocLike;



/**
 * @export
 * @param {ol.LocLike} loc Location.
 * @return {ol.Loc} Location.
 */
ol.loc = function(loc){

    if (loc instanceof ol.Loc) {
        return loc;
    }
    
    var x = 0;
    var y = 0;
    var z;
    var projection;
    
    if (goog.isArray(loc)) {
        if (loc.length >= 1) {
            x = loc[0];
            if (loc.length >= 2) {
                y = loc[1];
                if (loc.length >= 3) {
                    z = loc[2];
                }
            }
        }
    }
    else 
        if (goog.isObject(loc)) {
            if (goog.isDef(loc.x)) {
                x = loc.x;
            }
            if (goog.isDef(loc.y)) {
                y = loc.y;
            }
            if (goog.isDef(loc.z)) {
                z = loc.z;
            }
            if (goog.isDef(loc.projection)) {
                projection = loc.projection;
            }
        }
        else {
            throw new Error('ol.loc');
        }
    
    return new ol.Loc(x, y, z, projection);
    
};


/**
 * @export
 * @param {ol.Projection=} opt_arg Projection.
 * @return {ol.Loc|ol.Projection|undefined} Result.
 */
ol.Loc.prototype.projection = function(opt_arg){
    if (arguments.length == 1 && goog.isDef(opt_arg)) {
        return this.setProjection(opt_arg);
    }
    else {
        return this.getProjection();
    }
};


/**
 * @export
 * @param {number=} opt_arg X.
 * @return {ol.Loc|number} Result.
 */
ol.Loc.prototype.x = function(opt_arg){
    if (arguments.length == 1 && goog.isDef(opt_arg)) {
        return this.setX(opt_arg);
    }
    else {
        return this.getX();
    }
};


/**
 * @export
 * @param {number=} opt_arg Y.
 * @return {ol.Loc|number} Result.
 */
ol.Loc.prototype.y = function(opt_arg){
    if (arguments.length == 1 && goog.isDef(opt_arg)) {
        return this.setY(opt_arg);
    }
    else {
        return this.getY();
    }
};


/**
 * @export
 * @param {number=} opt_arg Z.
 * @return {ol.Loc|number|undefined} Result.
 */
ol.Loc.prototype.z = function(opt_arg){
    if (arguments.length == 1 && goog.isDef(opt_arg)) {
        return this.setZ(opt_arg);
    }
    else {
        return this.getZ();
    }
};