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import BoundingSphere from "../Core/BoundingSphere.js";
import defined from "../Core/defined.js";
import destroyObject from "../Core/destroyObject.js";
import DeveloperError from "../Core/DeveloperError.js";
import Matrix4 from "../Core/Matrix4.js";
import Resource from "../Core/Resource.js";
import Cesium3DTileset from "../Scene/Cesium3DTileset.js";
import BoundingSphereState from "./BoundingSphereState.js";
import Property from "./Property.js";
const modelMatrixScratch = new Matrix4();
/**
* A {@link Visualizer} which maps {@link Entity#tileset} to a {@link Cesium3DTileset}.
* @alias Cesium3DTilesetVisualizer
* @constructor
*
* @param {Scene} scene The scene the primitives will be rendered in.
* @param {EntityCollection} entityCollection The entityCollection to visualize.
*/
function Cesium3DTilesetVisualizer(scene, entityCollection) {
//>>includeStart('debug', pragmas.debug);
if (!defined(scene)) {
throw new DeveloperError("scene is required.");
}
Iif (!defined(entityCollection)) {
throw new DeveloperError("entityCollection is required.");
}
//>>includeEnd('debug');
entityCollection.collectionChanged.addEventListener(
Cesium3DTilesetVisualizer.prototype._onCollectionChanged,
this,
);
this._scene = scene;
this._primitives = scene.primitives;
this._entityCollection = entityCollection;
this._tilesetHash = {};
this._entitiesToVisualize = new AssociativeArray();
this._onCollectionChanged(entityCollection, entityCollection.values, [], []);
}
/**
* Updates models created this visualizer to match their
* Entity counterpart at the given time.
*
* @param {JulianDate} time The time to update to.
* @returns {boolean} This function always returns true.
*/
Cesium3DTilesetVisualizer.prototype.update = function (time) {
//>>includeStart('debug', pragmas.debug);
if (!defined(time)) {
throw new DeveloperError("time is required.");
}
//>>includeEnd('debug');
const entities = this._entitiesToVisualize.values;
const tilesetHash = this._tilesetHash;
const primitives = this._primitives;
for (let i = 0, len = entities.length; i < len; i++) {
const entity = entities[i];
const tilesetGraphics = entity._tileset;
let resource;
const tilesetData = tilesetHash[entity.id];
const show =
entity.isShowing &&
entity.isAvailable(time) &&
Property.getValueOrDefault(tilesetGraphics._show, time, true);
let modelMatrix;
if (show) {
modelMatrix = entity.computeModelMatrix(time, modelMatrixScratch);
resource = Resource.createIfNeeded(
Property.getValueOrUndefined(tilesetGraphics._uri, time),
);
}
const tileset = defined(tilesetData)
? tilesetData.tilesetPrimitive
: undefined;
if (!show) {
if (defined(tileset)) {
tileset.show = false;
}
continue;
}
if (!defined(tilesetData) || resource.url !== tilesetData.url) {
Iif (defined(tileset)) {
primitives.removeAndDestroy(tileset);
}
delete tilesetHash[entity.id];
createTileset(resource, tilesetHash, entity, primitives);
}
if (!defined(tileset)) {
continue;
}
tileset.show = true;
Eif (defined(modelMatrix)) {
tileset.modelMatrix = modelMatrix;
}
tileset.maximumScreenSpaceError = Property.getValueOrDefault(
tilesetGraphics.maximumScreenSpaceError,
time,
tileset.maximumScreenSpaceError,
);
}
return true;
};
/**
* Returns true if this object was destroyed; otherwise, false.
*
* @returns {boolean} True if this object was destroyed; otherwise, false.
*/
Cesium3DTilesetVisualizer.prototype.isDestroyed = function () {
return false;
};
/**
* Removes and destroys all primitives created by this instance.
*/
Cesium3DTilesetVisualizer.prototype.destroy = function () {
this._entityCollection.collectionChanged.removeEventListener(
Cesium3DTilesetVisualizer.prototype._onCollectionChanged,
this,
);
const entities = this._entitiesToVisualize.values;
const tilesetHash = this._tilesetHash;
const primitives = this._primitives;
for (let i = entities.length - 1; i > -1; i--) {
removeTileset(this, entities[i], tilesetHash, primitives);
}
return destroyObject(this);
};
/**
* Computes a bounding sphere which encloses the visualization produced for the specified entity.
* The bounding sphere is in the fixed frame of the scene's globe.
*
* @param {Entity} entity The entity whose bounding sphere to compute.
* @param {BoundingSphere} result The bounding sphere onto which to store the result.
* @returns {BoundingSphereState} BoundingSphereState.DONE if the result contains the bounding sphere,
* BoundingSphereState.PENDING if the result is still being computed, or
* BoundingSphereState.FAILED if the entity has no visualization in the current scene.
* @private
*/
Cesium3DTilesetVisualizer.prototype.getBoundingSphere = function (
entity,
result,
) {
//>>includeStart('debug', pragmas.debug);
if (!defined(entity)) {
throw new DeveloperError("entity is required.");
}
if (!defined(result)) {
throw new DeveloperError("result is required.");
}
//>>includeEnd('debug');
const tilesetData = this._tilesetHash[entity.id];
if (!defined(tilesetData) || tilesetData.loadFail) {
return BoundingSphereState.FAILED;
}
const primitive = tilesetData.tilesetPrimitive;
if (!defined(primitive)) {
return BoundingSphereState.PENDING;
}
Iif (!primitive.show) {
return BoundingSphereState.FAILED;
}
BoundingSphere.clone(primitive.boundingSphere, result);
return BoundingSphereState.DONE;
};
/**
* @private
*/
Cesium3DTilesetVisualizer.prototype._onCollectionChanged = function (
entityCollection,
added,
removed,
changed,
) {
let i;
let entity;
const entities = this._entitiesToVisualize;
const tilesetHash = this._tilesetHash;
const primitives = this._primitives;
for (i = added.length - 1; i > -1; i--) {
entity = added[i];
Iif (defined(entity._tileset)) {
entities.set(entity.id, entity);
}
}
for (i = changed.length - 1; i > -1; i--) {
entity = changed[i];
if (defined(entity._tileset)) {
entities.set(entity.id, entity);
} else {
removeTileset(this, entity, tilesetHash, primitives);
entities.remove(entity.id);
}
}
for (i = removed.length - 1; i > -1; i--) {
entity = removed[i];
removeTileset(this, entity, tilesetHash, primitives);
entities.remove(entity.id);
}
};
function removeTileset(visualizer, entity, tilesetHash, primitives) {
const tilesetData = tilesetHash[entity.id];
if (defined(tilesetData)) {
if (defined(tilesetData.tilesetPrimitive)) {
primitives.removeAndDestroy(tilesetData.tilesetPrimitive);
}
delete tilesetHash[entity.id];
}
}
async function createTileset(resource, tilesetHash, entity, primitives) {
tilesetHash[entity.id] = {
url: resource.url,
loadFail: false,
};
try {
const tileset = await Cesium3DTileset.fromUrl(resource);
tileset.id = entity;
primitives.add(tileset);
Iif (!defined(tilesetHash[entity.id])) {
return;
}
tilesetHash[entity.id].tilesetPrimitive = tileset;
} catch (error) {
console.error(error);
tilesetHash[entity.id].loadFail = true;
}
}
export default Cesium3DTilesetVisualizer;
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