import defaultValue from '../Core/defaultValue.js';
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import defined from '../Core/defined.js';
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import destroyObject from '../Core/destroyObject.js';
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import getMagic from '../Core/getMagic.js';
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import RuntimeError from '../Core/RuntimeError.js';
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import when from '../ThirdParty/when.js';
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/**
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* Represents the contents of a
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* {@link https://github.com/CesiumGS/3d-tiles/tree/master/specification/TileFormats/Composite|Composite}
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* tile in a {@link https://github.com/CesiumGS/3d-tiles/tree/master/specification|3D Tiles} tileset.
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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 Composite3DTileContent
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* @constructor
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*
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* @private
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*/
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function Composite3DTileContent(tileset, tile, resource, arrayBuffer, byteOffset, factory) {
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this._tileset = tileset;
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this._tile = tile;
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this._resource = resource;
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this._contents = [];
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this._readyPromise = when.defer();
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initialize(this, arrayBuffer, byteOffset, factory);
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}
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Object.defineProperties(Composite3DTileContent.prototype, {
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featurePropertiesDirty : {
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get : function() {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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if (contents[i].featurePropertiesDirty) {
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return true;
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}
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}
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return false;
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},
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set : function(value) {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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contents[i].featurePropertiesDirty = value;
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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>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>featuresLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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*/
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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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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>pointsLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>trianglesLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>geometryByteLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>texturesByteLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>0</code>. Instead call <code>batchTableByteLength</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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 this._contents;
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}
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},
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readyPromise : {
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get : function() {
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return this._readyPromise.promise;
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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 this._resource.getUrlComponent(true);
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}
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},
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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>undefined</code>. Instead call <code>batchTable</code> for a tile in the composite.
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* @memberof Composite3DTileContent.prototype
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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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var sizeOfUint32 = Uint32Array.BYTES_PER_ELEMENT;
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function initialize(content, arrayBuffer, byteOffset, factory) {
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byteOffset = defaultValue(byteOffset, 0);
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var uint8Array = new Uint8Array(arrayBuffer);
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var view = new DataView(arrayBuffer);
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byteOffset += sizeOfUint32; // Skip magic
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var version = view.getUint32(byteOffset, true);
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if (version !== 1) {
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throw new RuntimeError('Only Composite Tile version 1 is supported. Version ' + version + ' is not.');
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}
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byteOffset += sizeOfUint32;
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// Skip byteLength
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byteOffset += sizeOfUint32;
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var tilesLength = view.getUint32(byteOffset, true);
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byteOffset += sizeOfUint32;
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var contentPromises = [];
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for (var i = 0; i < tilesLength; ++i) {
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var tileType = getMagic(uint8Array, byteOffset);
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// Tile byte length is stored after magic and version
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var tileByteLength = view.getUint32(byteOffset + sizeOfUint32 * 2, true);
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var contentFactory = factory[tileType];
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if (defined(contentFactory)) {
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var innerContent = contentFactory(content._tileset, content._tile, content._resource, arrayBuffer, byteOffset);
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content._contents.push(innerContent);
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contentPromises.push(innerContent.readyPromise);
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} else {
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throw new RuntimeError('Unknown tile content type, ' + tileType + ', inside Composite tile');
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}
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byteOffset += tileByteLength;
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}
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when.all(contentPromises).then(function() {
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content._readyPromise.resolve(content);
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}).otherwise(function(error) {
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content._readyPromise.reject(error);
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});
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}
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/**
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* Part of the {@link Cesium3DTileContent} interface. <code>Composite3DTileContent</code>
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* always returns <code>false</code>. Instead call <code>hasProperty</code> for a tile in the composite.
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*/
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Composite3DTileContent.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>Composite3DTileContent</code>
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* always returns <code>undefined</code>. Instead call <code>getFeature</code> for a tile in the composite.
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*/
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Composite3DTileContent.prototype.getFeature = function(batchId) {
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return undefined;
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};
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Composite3DTileContent.prototype.applyDebugSettings = function(enabled, color) {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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contents[i].applyDebugSettings(enabled, color);
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}
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};
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Composite3DTileContent.prototype.applyStyle = function(style) {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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contents[i].applyStyle(style);
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}
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};
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Composite3DTileContent.prototype.update = function(tileset, frameState) {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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contents[i].update(tileset, frameState);
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}
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};
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Composite3DTileContent.prototype.isDestroyed = function() {
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return false;
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};
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Composite3DTileContent.prototype.destroy = function() {
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var contents = this._contents;
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var length = contents.length;
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for (var i = 0; i < length; ++i) {
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contents[i].destroy();
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}
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return destroyObject(this);
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};
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export default Composite3DTileContent;
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