import arraySlice from '../Core/arraySlice.js';
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import Cartesian2 from '../Core/Cartesian2.js';
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import Cartesian3 from '../Core/Cartesian3.js';
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import Color from '../Core/Color.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 DistanceDisplayCondition from '../Core/DistanceDisplayCondition.js';
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import Ellipsoid from '../Core/Ellipsoid.js';
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import NearFarScalar from '../Core/NearFarScalar.js';
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import Rectangle from '../Core/Rectangle.js';
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import TaskProcessor from '../Core/TaskProcessor.js';
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import when from '../ThirdParty/when.js';
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import BillboardCollection from './BillboardCollection.js';
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import Cesium3DTilePointFeature from './Cesium3DTilePointFeature.js';
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import HorizontalOrigin from './HorizontalOrigin.js';
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import LabelCollection from './LabelCollection.js';
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import LabelStyle from './LabelStyle.js';
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import PolylineCollection from './PolylineCollection.js';
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import VerticalOrigin from './VerticalOrigin.js';
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/**
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* Creates a batch of points or billboards and labels.
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*
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* @alias Vector3DTilePoints
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* @constructor
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*
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* @param {Object} options An object with following properties:
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* @param {Uint16Array} options.positions The positions of the polygons.
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* @param {Number} options.minimumHeight The minimum height of the terrain covered by the tile.
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* @param {Number} options.maximumHeight The maximum height of the terrain covered by the tile.
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* @param {Rectangle} options.rectangle The rectangle containing the tile.
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* @param {Cesium3DTileBatchTable} options.batchTable The batch table for the tile containing the batched polygons.
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* @param {Uint16Array} options.batchIds The batch ids for each polygon.
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*
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* @private
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*/
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function Vector3DTilePoints(options) {
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// released after the first update
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this._positions = options.positions;
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this._batchTable = options.batchTable;
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this._batchIds = options.batchIds;
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this._rectangle = options.rectangle;
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this._minHeight = options.minimumHeight;
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this._maxHeight = options.maximumHeight;
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this._billboardCollection = undefined;
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this._labelCollection = undefined;
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this._polylineCollection = undefined;
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this._verticesPromise = undefined;
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this._packedBuffer = undefined;
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this._ready = false;
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this._readyPromise = when.defer();
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this._resolvedPromise = false;
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}
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Object.defineProperties(Vector3DTilePoints.prototype, {
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/**
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* Gets the number of points.
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*
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* @memberof Vector3DTilePoints.prototype
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*
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* @type {Number}
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* @readonly
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*/
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pointsLength : {
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get : function() {
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return this._billboardCollection.length;
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}
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},
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/**
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* Gets the texture atlas memory in bytes.
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*
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* @memberof Vector3DTilePoints.prototype
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*
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* @type {Number}
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* @readonly
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*/
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texturesByteLength : {
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get : function() {
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var billboardSize = this._billboardCollection.textureAtlas.texture.sizeInBytes;
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var labelSize = this._labelCollection._textureAtlas.texture.sizeInBytes;
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return billboardSize + labelSize;
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}
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},
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/**
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* Gets a promise that resolves when the primitive is ready to render.
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* @memberof Vector3DTilePoints.prototype
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* @type {Promise}
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* @readonly
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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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});
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function packBuffer(points, ellipsoid) {
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var rectangle = points._rectangle;
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var minimumHeight = points._minHeight;
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var maximumHeight = points._maxHeight;
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var packedLength = 2 + Rectangle.packedLength + Ellipsoid.packedLength;
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var packedBuffer = new Float64Array(packedLength);
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var offset = 0;
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packedBuffer[offset++] = minimumHeight;
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packedBuffer[offset++] = maximumHeight;
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Rectangle.pack(rectangle, packedBuffer, offset);
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offset += Rectangle.packedLength;
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Ellipsoid.pack(ellipsoid, packedBuffer, offset);
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return packedBuffer;
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}
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var createVerticesTaskProcessor = new TaskProcessor('createVectorTilePoints');
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var scratchPosition = new Cartesian3();
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function createPoints(points, ellipsoid) {
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if (defined(points._billboardCollection)) {
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return;
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}
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var positions;
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if (!defined(points._verticesPromise)) {
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positions = points._positions;
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var packedBuffer = points._packedBuffer;
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if (!defined(packedBuffer)) {
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// Copy because they may be the views on the same buffer.
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positions = points._positions = arraySlice(positions);
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points._batchIds = arraySlice(points._batchIds);
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packedBuffer = points._packedBuffer = packBuffer(points, ellipsoid);
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}
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var transferrableObjects = [positions.buffer, packedBuffer.buffer];
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var parameters = {
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positions : positions.buffer,
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packedBuffer : packedBuffer.buffer
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};
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var verticesPromise = points._verticesPromise = createVerticesTaskProcessor.scheduleTask(parameters, transferrableObjects);
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if (!defined(verticesPromise)) {
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// Postponed
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return;
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}
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verticesPromise.then(function(result) {
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points._positions = new Float64Array(result.positions);
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points._ready = true;
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});
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}
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if (points._ready && !defined(points._billboardCollection)) {
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positions = points._positions;
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var batchTable = points._batchTable;
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var batchIds = points._batchIds;
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var billboardCollection = points._billboardCollection = new BillboardCollection({batchTable : batchTable});
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var labelCollection = points._labelCollection = new LabelCollection({batchTable : batchTable});
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var polylineCollection = points._polylineCollection = new PolylineCollection();
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polylineCollection._useHighlightColor = true;
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var numberOfPoints = positions.length / 3;
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for (var i = 0; i < numberOfPoints; ++i) {
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var id = batchIds[i];
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var position = Cartesian3.unpack(positions, i * 3, scratchPosition);
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var b = billboardCollection.add();
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b.position = position;
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b._batchIndex = id;
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var l = labelCollection.add();
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l.text = ' ';
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l.position = position;
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l._batchIndex = id;
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var p = polylineCollection.add();
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p.positions = [Cartesian3.clone(position), Cartesian3.clone(position)];
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}
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points._positions = undefined;
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points._packedBuffer = undefined;
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}
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}
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/**
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* Creates features for each point and places it at the batch id index of features.
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*
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* @param {Vector3DTileContent} content The vector tile content.
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* @param {Cesium3DTileFeature[]} features An array of features where the point features will be placed.
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*/
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Vector3DTilePoints.prototype.createFeatures = function(content, features) {
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var billboardCollection = this._billboardCollection;
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var labelCollection = this._labelCollection;
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var polylineCollection = this._polylineCollection;
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var batchIds = this._batchIds;
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var length = batchIds.length;
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for (var i = 0; i < length; ++i) {
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var batchId = batchIds[i];
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var billboard = billboardCollection.get(i);
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var label = labelCollection.get(i);
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var polyline = polylineCollection.get(i);
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features[batchId] = new Cesium3DTilePointFeature(content, batchId, billboard, label, polyline);
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}
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};
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/**
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* Colors the entire tile when enabled is true. The resulting color will be (batch table color * color).
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*
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* @param {Boolean} enabled Whether to enable debug coloring.
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* @param {Color} color The debug color.
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*/
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Vector3DTilePoints.prototype.applyDebugSettings = function(enabled, color) {
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if (enabled) {
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Color.clone(color, this._billboardCollection._highlightColor);
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Color.clone(color, this._labelCollection._highlightColor);
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Color.clone(color, this._polylineCollection._highlightColor);
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} else {
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Color.clone(Color.WHITE, this._billboardCollection._highlightColor);
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Color.clone(Color.WHITE, this._labelCollection._highlightColor);
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Color.clone(Color.WHITE, this._polylineCollection._highlightColor);
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}
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};
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function clearStyle(polygons, features) {
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var batchIds = polygons._batchIds;
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var length = batchIds.length;
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for (var i = 0; i < length; ++i) {
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var batchId = batchIds[i];
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var feature = features[batchId];
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feature.show = true;
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feature.pointSize = Cesium3DTilePointFeature.defaultPointSize;
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feature.color = Cesium3DTilePointFeature.defaultColor;
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feature.pointOutlineColor = Cesium3DTilePointFeature.defaultPointOutlineColor;
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feature.pointOutlineWidth = Cesium3DTilePointFeature.defaultPointOutlineWidth;
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feature.labelColor = Color.WHITE;
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feature.labelOutlineColor = Color.WHITE;
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feature.labelOutlineWidth = 1.0;
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feature.font = '30px sans-serif';
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feature.labelStyle = LabelStyle.FILL;
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feature.labelText = undefined;
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feature.backgroundColor = new Color(0.165, 0.165, 0.165, 0.8);
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feature.backgroundPadding = new Cartesian2(7, 5);
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feature.backgroundEnabled = false;
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feature.scaleByDistance = undefined;
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feature.translucencyByDistance = undefined;
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feature.distanceDisplayCondition = undefined;
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feature.heightOffset = 0.0;
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feature.anchorLineEnabled = false;
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feature.anchorLineColor = Color.WHITE;
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feature.image = undefined;
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feature.disableDepthTestDistance = 0.0;
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feature.horizontalOrigin = HorizontalOrigin.CENTER;
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feature.verticalOrigin = VerticalOrigin.CENTER;
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feature.labelHorizontalOrigin = HorizontalOrigin.RIGHT;
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feature.labelVerticalOrigin = VerticalOrigin.BASELINE;
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}
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}
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var scratchColor = new Color();
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var scratchColor2 = new Color();
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var scratchColor3 = new Color();
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var scratchColor4 = new Color();
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var scratchColor5 = new Color();
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var scratchColor6 = new Color();
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var scratchScaleByDistance = new NearFarScalar();
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var scratchTranslucencyByDistance = new NearFarScalar();
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var scratchDistanceDisplayCondition = new DistanceDisplayCondition();
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/**
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* Apply a style to the content.
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*
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* @param {Cesium3DTileStyle} style The style.
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* @param {Cesium3DTileFeature[]} features The array of features.
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*/
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Vector3DTilePoints.prototype.applyStyle = function(style, features) {
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if (!defined(style)) {
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clearStyle(this, features);
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return;
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}
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var batchIds = this._batchIds;
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var length = batchIds.length;
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for (var i = 0; i < length; ++i) {
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var batchId = batchIds[i];
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var feature = features[batchId];
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if (defined(style.show)) {
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feature.show = style.show.evaluate(feature);
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}
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if (defined(style.pointSize)) {
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feature.pointSize = style.pointSize.evaluate(feature);
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}
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if (defined(style.color)) {
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feature.color = style.color.evaluateColor(feature, scratchColor);
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}
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if (defined(style.pointOutlineColor)) {
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feature.pointOutlineColor = style.pointOutlineColor.evaluateColor(feature, scratchColor2);
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}
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if (defined(style.pointOutlineWidth)) {
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feature.pointOutlineWidth = style.pointOutlineWidth.evaluate(feature);
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}
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if (defined(style.labelColor)) {
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feature.labelColor = style.labelColor.evaluateColor(feature, scratchColor3);
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}
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if (defined(style.labelOutlineColor)) {
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feature.labelOutlineColor = style.labelOutlineColor.evaluateColor(feature, scratchColor4);
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}
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if (defined(style.labelOutlineWidth)) {
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feature.labelOutlineWidth = style.labelOutlineWidth.evaluate(feature);
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}
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if (defined(style.font)) {
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feature.font = style.font.evaluate(feature);
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}
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if (defined(style.labelStyle)) {
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feature.labelStyle = style.labelStyle.evaluate(feature);
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}
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if (defined(style.labelText)) {
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feature.labelText = style.labelText.evaluate(feature);
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} else {
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feature.labelText = undefined;
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}
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if (defined(style.backgroundColor)) {
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feature.backgroundColor = style.backgroundColor.evaluateColor(feature, scratchColor5);
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}
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if (defined(style.backgroundPadding)) {
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feature.backgroundPadding = style.backgroundPadding.evaluate(feature);
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}
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if (defined(style.backgroundEnabled)) {
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feature.backgroundEnabled = style.backgroundEnabled.evaluate(feature);
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}
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if (defined(style.scaleByDistance)) {
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var scaleByDistanceCart4 = style.scaleByDistance.evaluate(feature);
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scratchScaleByDistance.near = scaleByDistanceCart4.x;
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scratchScaleByDistance.nearValue = scaleByDistanceCart4.y;
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scratchScaleByDistance.far = scaleByDistanceCart4.z;
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scratchScaleByDistance.farValue = scaleByDistanceCart4.w;
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feature.scaleByDistance = scratchScaleByDistance;
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} else {
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feature.scaleByDistance = undefined;
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}
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if (defined(style.translucencyByDistance)) {
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var translucencyByDistanceCart4 = style.translucencyByDistance.evaluate(feature);
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scratchTranslucencyByDistance.near = translucencyByDistanceCart4.x;
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scratchTranslucencyByDistance.nearValue = translucencyByDistanceCart4.y;
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scratchTranslucencyByDistance.far = translucencyByDistanceCart4.z;
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scratchTranslucencyByDistance.farValue = translucencyByDistanceCart4.w;
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feature.translucencyByDistance = scratchTranslucencyByDistance;
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} else {
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feature.translucencyByDistance = undefined;
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}
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if (defined(style.distanceDisplayCondition)) {
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var distanceDisplayConditionCart2 = style.distanceDisplayCondition.evaluate(feature);
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scratchDistanceDisplayCondition.near = distanceDisplayConditionCart2.x;
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scratchDistanceDisplayCondition.far = distanceDisplayConditionCart2.y;
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feature.distanceDisplayCondition = scratchDistanceDisplayCondition;
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} else {
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feature.distanceDisplayCondition = undefined;
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}
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if (defined(style.heightOffset)) {
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feature.heightOffset = style.heightOffset.evaluate(feature);
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}
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if (defined(style.anchorLineEnabled)) {
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feature.anchorLineEnabled = style.anchorLineEnabled.evaluate(feature);
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}
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if (defined(style.anchorLineColor)) {
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feature.anchorLineColor = style.anchorLineColor.evaluateColor(feature, scratchColor6);
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}
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if (defined(style.image)) {
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feature.image = style.image.evaluate(feature);
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} else {
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feature.image = undefined;
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}
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if (defined(style.disableDepthTestDistance)) {
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feature.disableDepthTestDistance = style.disableDepthTestDistance.evaluate(feature);
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}
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if (defined(style.horizontalOrigin)) {
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feature.horizontalOrigin = style.horizontalOrigin.evaluate(feature);
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}
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if (defined(style.verticalOrigin)) {
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feature.verticalOrigin = style.verticalOrigin.evaluate(feature);
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}
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if (defined(style.labelHorizontalOrigin)) {
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feature.labelHorizontalOrigin = style.labelHorizontalOrigin.evaluate(feature);
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}
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if (defined(style.labelVerticalOrigin)) {
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feature.labelVerticalOrigin = style.labelVerticalOrigin.evaluate(feature);
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}
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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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Vector3DTilePoints.prototype.update = function(frameState) {
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createPoints(this, frameState.mapProjection.ellipsoid);
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if (!this._ready) {
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return;
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}
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this._polylineCollection.update(frameState);
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this._billboardCollection.update(frameState);
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this._labelCollection.update(frameState);
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if (!this._resolvedPromise) {
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this._readyPromise.resolve();
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this._resolvedPromise = true;
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}
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};
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/**
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* Returns true if this object was destroyed; otherwise, false.
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* <p>
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* If this object was destroyed, it should not be used; calling any function other than
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* <code>isDestroyed</code> will result in a {@link DeveloperError} exception.
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* </p>
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*
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* @returns {Boolean} <code>true</code> if this object was destroyed; otherwise, <code>false</code>.
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*/
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Vector3DTilePoints.prototype.isDestroyed = function() {
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return false;
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};
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/**
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* Destroys the WebGL resources held by this object. Destroying an object allows for deterministic
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* release of WebGL resources, instead of relying on the garbage collector to destroy this object.
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* <p>
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* Once an object is destroyed, it should not be used; calling any function other than
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* <code>isDestroyed</code> will result in a {@link DeveloperError} exception. Therefore,
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* assign the return value (<code>undefined</code>) to the object as done in the example.
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* </p>
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*
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* @exception {DeveloperError} This object was destroyed, i.e., destroy() was called.
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*/
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Vector3DTilePoints.prototype.destroy = function() {
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this._billboardCollection = this._billboardCollection && this._billboardCollection.destroy();
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this._labelCollection = this._labelCollection && this._labelCollection.destroy();
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this._polylineCollection = this._polylineCollection && this._polylineCollection.destroy();
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return destroyObject(this);
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};
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export default Vector3DTilePoints;
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