import destroyObject from '../Core/destroyObject.js';
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/**
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* Represents empty content for tiles in a
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* {@link https://github.com/CesiumGS/3d-tiles/tree/master/specification|3D Tiles} tileset that
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* do not have content, e.g., because they are used to optimize hierarchical culling.
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* <p>
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* Implements the {@link Cesium3DTileContent} interface.
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* </p>
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*
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* @alias Empty3DTileContent
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* @constructor
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*
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* @private
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*/
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function Empty3DTileContent(tileset, tile) {
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this._tileset = tileset;
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this._tile = tile;
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this.featurePropertiesDirty = false;
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}
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Object.defineProperties(Empty3DTileContent.prototype, {
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featuresLength : {
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get : function() {
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return 0;
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}
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},
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pointsLength : {
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get : function() {
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return 0;
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}
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},
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trianglesLength : {
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get : function() {
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return 0;
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}
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},
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geometryByteLength : {
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get : function() {
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return 0;
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}
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},
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texturesByteLength : {
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get : function() {
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return 0;
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}
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},
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batchTableByteLength : {
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get : function() {
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return 0;
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}
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},
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innerContents : {
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get : function() {
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return undefined;
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}
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},
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readyPromise : {
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get : function() {
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return undefined;
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}
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},
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tileset : {
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get : function() {
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return this._tileset;
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}
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},
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tile : {
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get : function() {
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return this._tile;
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}
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},
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url: {
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get: function() {
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return undefined;
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}
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},
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batchTable : {
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get : function() {
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return undefined;
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}
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}
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});
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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Empty3DTileContent</code>
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* always returns <code>false</code> since a tile of this type does not have any features.
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*/
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Empty3DTileContent.prototype.hasProperty = function(batchId, name) {
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return false;
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};
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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Empty3DTileContent</code>
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* always returns <code>undefined</code> since a tile of this type does not have any features.
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*/
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Empty3DTileContent.prototype.getFeature = function(batchId) {
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return undefined;
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};
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Empty3DTileContent.prototype.applyDebugSettings = function(enabled, color) {
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};
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Empty3DTileContent.prototype.applyStyle = function(style) {
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};
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Empty3DTileContent.prototype.update = function(tileset, frameState) {
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};
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Empty3DTileContent.prototype.isDestroyed = function() {
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return false;
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};
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Empty3DTileContent.prototype.destroy = function() {
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return destroyObject(this);
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};
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export default Empty3DTileContent;
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