/*
* Copyright 2015-2017 WorldWind Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
define([
'./KmlElements',
'./KmlObject',
'./util/NodeTransformers'
], function (KmlElements,
KmlObject,
NodeTransformers) {
"use strict";
/**
* Constructs an KmlLod. Applications usually don't call this constructor. It is called by {@link KmlFile} as
* objects from Kml file are read. This object is already concrete implementation.
* @alias KmlLod
* @classdesc Contains the data associated with Lod node.
* @param options {Object}
* @param options.objectNode {Node} Node representing lod in the document.
* @constructor
* @throws {ArgumentError} If the node is null or undefined.
* @see https://developers.google.com/kml/documentation/kmlreference#lod
* @augments KmlObject
*/
var KmlLod = function (options) {
KmlObject.call(this, options);
};
KmlLod.prototype = Object.create(KmlObject.prototype);
Object.defineProperties(KmlLod.prototype, {
/**
* Defines a square in screen space, with sides of the specified value in pixels. For example, 128 defines
* a
* square of 128 x 128 pixels. The region's bounding box must be larger than this square (and smaller than
* the maxLodPixels square) in order for the Region to be active.
*
* More details are available in the Working with Regions chapter of the Developer's Guide, as well as the
* Google Earth Outreach documentation's Avoiding Overload with Regions tutorial.
* @memberof KmlLod.prototype
* @readonly
* @type {Number}
*/
kmlMinLodPixels: {
get: function () {
return this._factory.specific(this, {name: 'minLodPixels', transformer: NodeTransformers.number});
}
},
/**
* Measurement in screen pixels that represents the maximum limit of the visibility range for a given
* Region. A value of -1, the default, indicates "active to infinite size."
* @memberof KmlLod.prototype
* @readonly
* @type {Number}
*/
kmlMaxLodPixels: {
get: function () {
return this._factory.specific(this, {name: 'maxLodPixels', transformer: NodeTransformers.number});
}
},
/**
* Distance over which the geometry fades, from fully opaque to fully transparent. This ramp value,
* expressed in screen pixels, is applied at the minimum end of the LOD (visibility) limits.
* @memberof KmlLod.prototype
* @readonly
* @type {Number}
*/
kmlMinFadeExtent: {
get: function () {
return this._factory.specific(this, {name: 'minFadeExtent', transformer: NodeTransformers.number});
}
},
/**
* Distance over which the geometry fades, from fully transparent to fully opaque. This ramp value,
* expressed in screen pixels, is applied at the maximum end of the LOD (visibility) limits.
* @memberof KmlLod.prototype
* @readonly
* @type {Number}
*/
kmlMaxFadeExtent: {
get: function () {
return this._factory.specific(this, {name: 'maxFadeExtent', transformer: NodeTransformers.number});
}
}
});
/**
* @inheritDoc
*/
KmlLod.prototype.getTagNames = function () {
return ['Lod'];
};
KmlElements.addKey(KmlLod.prototype.getTagNames()[0], KmlLod);
return KmlLod;
});