import Color from '../Core/Color.js';
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import defined from '../Core/defined.js';
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/**
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* A feature of a {@link Cesium3DTileset}.
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* <p>
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* Provides access to a feature's properties stored in the tile's batch table, as well
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* as the ability to show/hide a feature and change its highlight color via
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* {@link Cesium3DTileFeature#show} and {@link Cesium3DTileFeature#color}, respectively.
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* </p>
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* <p>
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* Modifications to a <code>Cesium3DTileFeature</code> object have the lifetime of the tile's
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* content. If the tile's content is unloaded, e.g., due to it going out of view and needing
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* to free space in the cache for visible tiles, listen to the {@link Cesium3DTileset#tileUnload} event to save any
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* modifications. Also listen to the {@link Cesium3DTileset#tileVisible} event to reapply any modifications.
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* </p>
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* <p>
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* Do not construct this directly. Access it through {@link Cesium3DTileContent#getFeature}
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* or picking using {@link Scene#pick} and {@link Scene#pickPosition}.
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* </p>
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*
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* @alias Cesium3DTileFeature
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* @constructor
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*
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* @example
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* // On mouse over, display all the properties for a feature in the console log.
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* handler.setInputAction(function(movement) {
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* var feature = scene.pick(movement.endPosition);
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* if (feature instanceof Cesium.Cesium3DTileFeature) {
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* var propertyNames = feature.getPropertyNames();
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* var length = propertyNames.length;
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* for (var i = 0; i < length; ++i) {
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* var propertyName = propertyNames[i];
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* console.log(propertyName + ': ' + feature.getProperty(propertyName));
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* }
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* }
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* }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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*/
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function Cesium3DTileFeature(content, batchId) {
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this._content = content;
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this._batchId = batchId;
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this._color = undefined; // for calling getColor
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}
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Object.defineProperties(Cesium3DTileFeature.prototype, {
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/**
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* Gets or sets if the feature will be shown. This is set for all features
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* when a style's show is evaluated.
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*
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* @memberof Cesium3DTileFeature.prototype
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*
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* @type {Boolean}
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*
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* @default true
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*/
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show : {
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get : function() {
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return this._content.batchTable.getShow(this._batchId);
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},
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set : function(value) {
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this._content.batchTable.setShow(this._batchId, value);
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}
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},
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/**
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* Gets or sets the highlight color multiplied with the feature's color. When
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* this is white, the feature's color is not changed. This is set for all features
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* when a style's color is evaluated.
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*
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* @memberof Cesium3DTileFeature.prototype
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*
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* @type {Color}
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*
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* @default {@link Color.WHITE}
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*/
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color : {
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get : function() {
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if (!defined(this._color)) {
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this._color = new Color();
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}
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return this._content.batchTable.getColor(this._batchId, this._color);
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},
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set : function(value) {
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this._content.batchTable.setColor(this._batchId, value);
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}
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},
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/**
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* Gets the content of the tile containing the feature.
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*
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* @memberof Cesium3DTileFeature.prototype
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*
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* @type {Cesium3DTileContent}
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*
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* @readonly
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* @private
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*/
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content : {
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get : function() {
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return this._content;
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}
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},
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/**
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* Gets the tileset containing the feature.
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*
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* @memberof Cesium3DTileFeature.prototype
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*
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* @type {Cesium3DTileset}
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*
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* @readonly
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*/
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tileset : {
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get : function() {
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return this._content.tileset;
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}
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},
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/**
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* All objects returned by {@link Scene#pick} have a <code>primitive</code> property. This returns
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* the tileset containing the feature.
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*
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* @memberof Cesium3DTileFeature.prototype
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*
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* @type {Cesium3DTileset}
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*
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* @readonly
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*/
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primitive : {
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get : function() {
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return this._content.tileset;
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}
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},
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/**
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* @private
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*/
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pickId : {
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get : function() {
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return this._content.batchTable.getPickColor(this._batchId);
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}
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}
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});
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/**
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* Returns whether the feature contains this property. This includes properties from this feature's
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* class and inherited classes when using a batch table hierarchy.
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*
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* @see {@link https://github.com/CesiumGS/3d-tiles/tree/master/extensions/3DTILES_batch_table_hierarchy}
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*
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* @param {String} name The case-sensitive name of the property.
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* @returns {Boolean} Whether the feature contains this property.
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*/
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Cesium3DTileFeature.prototype.hasProperty = function(name) {
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return this._content.batchTable.hasProperty(this._batchId, name);
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};
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/**
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* Returns an array of property names for the feature. This includes properties from this feature's
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* class and inherited classes when using a batch table hierarchy.
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*
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* @see {@link https://github.com/CesiumGS/3d-tiles/tree/master/extensions/3DTILES_batch_table_hierarchy}
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*
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* @param {String[]} results An array into which to store the results.
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* @returns {String[]} The names of the feature's properties.
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*/
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Cesium3DTileFeature.prototype.getPropertyNames = function(results) {
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return this._content.batchTable.getPropertyNames(this._batchId, results);
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};
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/**
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* Returns a copy of the value of the feature's property with the given name. This includes properties from this feature's
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* class and inherited classes when using a batch table hierarchy.
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*
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* @see {@link https://github.com/CesiumGS/3d-tiles/tree/master/extensions/3DTILES_batch_table_hierarchy}
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*
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* @param {String} name The case-sensitive name of the property.
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* @returns {*} The value of the property or <code>undefined</code> if the property does not exist.
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*
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* @example
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* // Display all the properties for a feature in the console log.
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* var propertyNames = feature.getPropertyNames();
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* var length = propertyNames.length;
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* for (var i = 0; i < length; ++i) {
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* var propertyName = propertyNames[i];
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* console.log(propertyName + ': ' + feature.getProperty(propertyName));
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* }
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*/
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Cesium3DTileFeature.prototype.getProperty = function(name) {
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return this._content.batchTable.getProperty(this._batchId, name);
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};
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/**
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* Sets the value of the feature's property with the given name.
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* <p>
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* If a property with the given name doesn't exist, it is created.
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* </p>
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*
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* @param {String} name The case-sensitive name of the property.
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* @param {*} value The value of the property that will be copied.
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*
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* @exception {DeveloperError} Inherited batch table hierarchy property is read only.
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*
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* @example
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* var height = feature.getProperty('Height'); // e.g., the height of a building
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*
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* @example
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* var name = 'clicked';
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* if (feature.getProperty(name)) {
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* console.log('already clicked');
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* } else {
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* feature.setProperty(name, true);
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* console.log('first click');
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* }
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*/
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Cesium3DTileFeature.prototype.setProperty = function(name, value) {
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this._content.batchTable.setProperty(this._batchId, name, value);
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// PERFORMANCE_IDEA: Probably overkill, but maybe only mark the tile dirty if the
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// property is in one of the style's expressions or - if it can be done quickly -
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// if the new property value changed the result of an expression.
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this._content.featurePropertiesDirty = true;
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};
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/**
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* Returns whether the feature's class name equals <code>className</code>. Unlike {@link Cesium3DTileFeature#isClass}
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* this function only checks the feature's exact class and not inherited classes.
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* <p>
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* This function returns <code>false</code> if no batch table hierarchy is present.
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* </p>
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*
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* @param {String} className The name to check against.
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* @returns {Boolean} Whether the feature's class name equals <code>className</code>
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*
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* @private
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*/
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Cesium3DTileFeature.prototype.isExactClass = function(className) {
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return this._content.batchTable.isExactClass(this._batchId, className);
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};
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/**
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* Returns whether the feature's class or any inherited classes are named <code>className</code>.
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* <p>
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* This function returns <code>false</code> if no batch table hierarchy is present.
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* </p>
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*
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* @param {String} className The name to check against.
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* @returns {Boolean} Whether the feature's class or inherited classes are named <code>className</code>
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*
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* @private
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*/
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Cesium3DTileFeature.prototype.isClass = function(className) {
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return this._content.batchTable.isClass(this._batchId, className);
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};
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/**
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* Returns the feature's class name.
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* <p>
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* This function returns <code>undefined</code> if no batch table hierarchy is present.
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* </p>
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*
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* @returns {String} The feature's class name.
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*
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* @private
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*/
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Cesium3DTileFeature.prototype.getExactClassName = function() {
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return this._content.batchTable.getExactClassName(this._batchId);
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};
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export default Cesium3DTileFeature;
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