// @ts-check
import DeveloperError from "../Core/DeveloperError.js";
/** @import Cartesian3 from "../Core/Cartesian3.js"; */
/** @import Cesium3DContentGroup from "./Cesium3DContentGroup.js"; */
/** @import Cesium3DTile from "./Cesium3DTile.js"; */
/** @import Cesium3DTileBatchTable from "./Cesium3DTileBatchTable.js"; */
/** @import Cesium3DTileFeature from "./Cesium3DTileFeature.js"; */
/** @import Cesium3DTileStyle from "./Cesium3DTileStyle.js"; */
/** @import Cesium3DTileset from "./Cesium3DTileset.js"; */
/** @import Color from "../Core/Color.js"; */
/** @import FrameState from "./FrameState.js"; */
/** @import ImplicitMetadataView from "./ImplicitMetadataView.js"; */
/** @import Ray from "../Core/Ray.js"; */
/**
* The content of a tile in a {@link Cesium3DTileset}.
*
* Derived classes of this interface provide access to individual features in the tile.
* Access derived objects through {@link Cesium3DTile#content}.
*
*
* This type describes an interface and is not intended to be instantiated directly.
*
*
* @interface
*/
class Cesium3DTileContent {
constructor() {
/**
* Gets or sets if any feature's property changed. Used to
* optimized applying a style when a feature's property changed.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @type {boolean}
*
* @protected
* @ignore
*/
this.featurePropertiesDirty = false;
}
/**
* Gets the number of features in the tile.
*
*
* @type {number}
* @readonly
* @constant
*/
featuresLength;
/**
* Gets the number of points in the tile.
*
* Only applicable for tiles with Point Cloud content. This is different than {@link Cesium3DTileContent#featuresLength} which
* equals the number of groups of points as distinguished by the BATCH_ID feature table semantic.
*
*
* @see {@link https://github.com/CesiumGS/3d-tiles/tree/main/specification/TileFormats/PointCloud#batched-points}
*
*
* @type {number}
* @readonly
* @constant
*/
pointsLength;
/**
* Gets the number of triangles in the tile.
*
*
* @type {number}
* @readonly
* @constant
*/
trianglesLength;
/**
* Gets the tile's geometry memory in bytes.
*
*
* @type {number}
* @readonly
* @constant
*/
geometryByteLength;
/**
* Gets the tile's texture memory in bytes.
*
*
* @type {number}
* @readonly
* @constant
*/
texturesByteLength;
/**
* Gets the amount of memory used by the batch table textures and any binary
* metadata properties not accounted for in geometryByteLength or
* texturesByteLength
*
*
* @type {number}
* @readonly
* @constant
*/
batchTableByteLength;
/**
* Gets the array of {@link Cesium3DTileContent} objects for contents that contain other contents, such as composite tiles. The inner contents may in turn have inner contents, such as a composite tile that contains a composite tile.
*
* @see {@link https://github.com/CesiumGS/3d-tiles/tree/main/specification/TileFormats/Composite|Composite specification}
*
*
* @type {Array<*>}
* @readonly
* @constant
*/
innerContents;
/**
* Returns true when the tile's content is ready to render; otherwise false
*
*
* @type {boolean}
* @readonly
* @constant
*/
ready;
/**
* Gets the tileset for this tile.
*
*
* @type {Cesium3DTileset}
* @readonly
* @constant
*/
tileset;
/**
* Gets the tile containing this content.
*
*
* @type {Cesium3DTile}
* @readonly
* @constant
*/
tile;
/**
* Gets the url of the tile's content.
*
* @type {string}
* @readonly
* @constant
*/
url;
/**
* Gets the batch table for this content.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @type {Cesium3DTileBatchTable}
* @readonly
* @constant
*
* @private
*/
batchTable;
/**
* Gets the metadata for this content, whether it is available explicitly or via
* implicit tiling. If there is no metadata, this property should be undefined.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @type {ImplicitMetadataView|undefined}
*
* @private
* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
*/
metadata;
/**
* Gets the group for this content if the content has metadata (3D Tiles 1.1) or
* if it uses the 3DTILES_metadata extension. If neither are present,
* this property should be undefined.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @type {Cesium3DContentGroup|undefined}
*
* @private
* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
*/
group;
/**
* Returns whether the feature has this property.
*
* @param {number} batchId The batchId for the feature.
* @param {string} name The case-sensitive name of the property.
* @returns {boolean} true if the feature has this property; otherwise, false.
*/
hasProperty(batchId, name) {
DeveloperError.throwInstantiationError();
}
/**
* Returns the {@link Cesium3DTileFeature} object for the feature with the
* given batchId. This object is used to get and modify the
* feature's properties.
*
* Features in a tile are ordered by batchId, an index used to retrieve their metadata from the batch table.
*
*
* @see {@link https://github.com/CesiumGS/3d-tiles/tree/main/specification/TileFormats/BatchTable}.
*
* @param {number} batchId The batchId for the feature.
* @returns {Cesium3DTileFeature} The corresponding {@link Cesium3DTileFeature} object.
*
* @exception {DeveloperError} batchId must be between zero and {@link Cesium3DTileContent#featuresLength} - 1.
*/
getFeature(batchId) {
DeveloperError.throwInstantiationError();
}
/**
* Called when {@link Cesium3DTileset#debugColorizeTiles} changes.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @param {boolean} enabled Whether to enable or disable debug settings.
* @param {Color} color Debug color.
* @returns {Cesium3DTileFeature} The corresponding {@link Cesium3DTileFeature} object.
* @private
*/
applyDebugSettings(enabled, color) {
DeveloperError.throwInstantiationError();
}
/**
* Apply a style to the content
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @param {Cesium3DTileStyle} style The style.
* @returns {void}
*
* @private
*/
applyStyle(style) {
DeveloperError.throwInstantiationError();
}
/**
* Called by the tile during tileset traversal to get the draw commands needed to render this content.
* When the tile's content is in the PROCESSING state, this creates WebGL resources to ultimately
* move to the READY state.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @param {Cesium3DTileset} tileset The tileset containing this tile.
* @param {FrameState} frameState The frame state.
* @returns {void}
*
* @private
*/
update(tileset, frameState) {
DeveloperError.throwInstantiationError();
}
/**
* Find an intersection between a ray and the tile content surface that was rendered. The ray must be given in world coordinates.
*
* @param {Ray} ray The ray to test for intersection.
* @param {FrameState} frameState The frame state.
* @param {Cartesian3|undefined} [result] The intersection or undefined if none was found.
* @returns {Cartesian3|undefined} The intersection or undefined if none was found.
*
* @private
*/
pick(ray, frameState, result) {
DeveloperError.throwInstantiationError();
}
/**
* Returns true if this object was destroyed; otherwise, false.
*
* If this object was destroyed, it should not be used; calling any function other than
* isDestroyed will result in a {@link DeveloperError} exception.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @returns {boolean} true if this object was destroyed; otherwise, false.
*
* @see Cesium3DTileContent#destroy
*
* @private
*/
isDestroyed() {
DeveloperError.throwInstantiationError();
}
/**
* Destroys the WebGL resources held by this object. Destroying an object allows for deterministic
* release of WebGL resources, instead of relying on the garbage collector to destroy this object.
*
* Once an object is destroyed, it should not be used; calling any function other than
* isDestroyed will result in a {@link DeveloperError} exception. Therefore,
* assign the return value (undefined) to the object as done in the example.
*
* This is used to implement the Cesium3DTileContent interface, but is
* not part of the public Cesium API.
*
*
* @exception {DeveloperError} This object was destroyed, i.e., destroy() was called.
*
* @example
* content = content && content.destroy();
*
* @see Cesium3DTileContent#isDestroyed
*
* @returns {void}
*
* @private
*/
destroy() {
DeveloperError.throwInstantiationError();
}
}
export default Cesium3DTileContent;