import AssociativeArray from '../Core/AssociativeArray.js';
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import BoundingRectangle from '../Core/BoundingRectangle.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 DeveloperError from '../Core/DeveloperError.js';
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import DistanceDisplayCondition from '../Core/DistanceDisplayCondition.js';
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import NearFarScalar from '../Core/NearFarScalar.js';
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import HeightReference from '../Scene/HeightReference.js';
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import HorizontalOrigin from '../Scene/HorizontalOrigin.js';
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import VerticalOrigin from '../Scene/VerticalOrigin.js';
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import BoundingSphereState from './BoundingSphereState.js';
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import Property from './Property.js';
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var defaultColor = Color.WHITE;
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var defaultEyeOffset = Cartesian3.ZERO;
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var defaultHeightReference = HeightReference.NONE;
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var defaultPixelOffset = Cartesian2.ZERO;
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var defaultScale = 1.0;
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var defaultRotation = 0.0;
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var defaultAlignedAxis = Cartesian3.ZERO;
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var defaultHorizontalOrigin = HorizontalOrigin.CENTER;
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var defaultVerticalOrigin = VerticalOrigin.CENTER;
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var defaultSizeInMeters = false;
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var positionScratch = new Cartesian3();
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var colorScratch = new Color();
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var eyeOffsetScratch = new Cartesian3();
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var pixelOffsetScratch = new Cartesian2();
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var scaleByDistanceScratch = new NearFarScalar();
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var translucencyByDistanceScratch = new NearFarScalar();
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var pixelOffsetScaleByDistanceScratch = new NearFarScalar();
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var boundingRectangleScratch = new BoundingRectangle();
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var distanceDisplayConditionScratch = new DistanceDisplayCondition();
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function EntityData(entity) {
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this.entity = entity;
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this.billboard = undefined;
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this.textureValue = undefined;
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}
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/**
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* A {@link Visualizer} which maps {@link Entity#billboard} to a {@link Billboard}.
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* @alias BillboardVisualizer
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* @constructor
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*
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* @param {EntityCluster} entityCluster The entity cluster to manage the collection of billboards and optionally cluster with other entities.
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* @param {EntityCollection} entityCollection The entityCollection to visualize.
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*/
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function BillboardVisualizer(entityCluster, entityCollection) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(entityCluster)) {
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throw new DeveloperError('entityCluster is required.');
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}
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if (!defined(entityCollection)) {
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throw new DeveloperError('entityCollection is required.');
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}
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//>>includeEnd('debug');
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entityCollection.collectionChanged.addEventListener(BillboardVisualizer.prototype._onCollectionChanged, this);
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this._cluster = entityCluster;
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this._entityCollection = entityCollection;
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this._items = new AssociativeArray();
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this._onCollectionChanged(entityCollection, entityCollection.values, [], []);
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}
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/**
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* Updates the primitives created by this visualizer to match their
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* Entity counterpart at the given time.
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*
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* @param {JulianDate} time The time to update to.
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* @returns {Boolean} This function always returns true.
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*/
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BillboardVisualizer.prototype.update = function(time) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(time)) {
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throw new DeveloperError('time is required.');
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}
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//>>includeEnd('debug');
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var items = this._items.values;
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var cluster = this._cluster;
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for (var i = 0, len = items.length; i < len; i++) {
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var item = items[i];
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var entity = item.entity;
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var billboardGraphics = entity._billboard;
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var textureValue;
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var billboard = item.billboard;
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var show = entity.isShowing && entity.isAvailable(time) && Property.getValueOrDefault(billboardGraphics._show, time, true);
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var position;
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if (show) {
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position = Property.getValueOrUndefined(entity._position, time, positionScratch);
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textureValue = Property.getValueOrUndefined(billboardGraphics._image, time);
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show = defined(position) && defined(textureValue);
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}
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if (!show) {
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//don't bother creating or updating anything else
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returnPrimitive(item, entity, cluster);
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continue;
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}
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if (!Property.isConstant(entity._position)) {
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cluster._clusterDirty = true;
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}
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if (!defined(billboard)) {
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billboard = cluster.getBillboard(entity);
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billboard.id = entity;
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billboard.image = undefined;
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item.billboard = billboard;
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}
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billboard.show = show;
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if (!defined(billboard.image) || item.textureValue !== textureValue) {
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billboard.image = textureValue;
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item.textureValue = textureValue;
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}
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billboard.position = position;
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billboard.color = Property.getValueOrDefault(billboardGraphics._color, time, defaultColor, colorScratch);
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billboard.eyeOffset = Property.getValueOrDefault(billboardGraphics._eyeOffset, time, defaultEyeOffset, eyeOffsetScratch);
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billboard.heightReference = Property.getValueOrDefault(billboardGraphics._heightReference, time, defaultHeightReference);
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billboard.pixelOffset = Property.getValueOrDefault(billboardGraphics._pixelOffset, time, defaultPixelOffset, pixelOffsetScratch);
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billboard.scale = Property.getValueOrDefault(billboardGraphics._scale, time, defaultScale);
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billboard.rotation = Property.getValueOrDefault(billboardGraphics._rotation, time, defaultRotation);
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billboard.alignedAxis = Property.getValueOrDefault(billboardGraphics._alignedAxis, time, defaultAlignedAxis);
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billboard.horizontalOrigin = Property.getValueOrDefault(billboardGraphics._horizontalOrigin, time, defaultHorizontalOrigin);
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billboard.verticalOrigin = Property.getValueOrDefault(billboardGraphics._verticalOrigin, time, defaultVerticalOrigin);
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billboard.width = Property.getValueOrUndefined(billboardGraphics._width, time);
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billboard.height = Property.getValueOrUndefined(billboardGraphics._height, time);
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billboard.scaleByDistance = Property.getValueOrUndefined(billboardGraphics._scaleByDistance, time, scaleByDistanceScratch);
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billboard.translucencyByDistance = Property.getValueOrUndefined(billboardGraphics._translucencyByDistance, time, translucencyByDistanceScratch);
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billboard.pixelOffsetScaleByDistance = Property.getValueOrUndefined(billboardGraphics._pixelOffsetScaleByDistance, time, pixelOffsetScaleByDistanceScratch);
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billboard.sizeInMeters = Property.getValueOrDefault(billboardGraphics._sizeInMeters, time, defaultSizeInMeters);
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billboard.distanceDisplayCondition = Property.getValueOrUndefined(billboardGraphics._distanceDisplayCondition, time, distanceDisplayConditionScratch);
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billboard.disableDepthTestDistance = Property.getValueOrUndefined(billboardGraphics._disableDepthTestDistance, time);
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var subRegion = Property.getValueOrUndefined(billboardGraphics._imageSubRegion, time, boundingRectangleScratch);
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if (defined(subRegion)) {
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billboard.setImageSubRegion(billboard._imageId, subRegion);
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}
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}
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return true;
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};
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/**
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* Computes a bounding sphere which encloses the visualization produced for the specified entity.
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* The bounding sphere is in the fixed frame of the scene's globe.
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*
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* @param {Entity} entity The entity whose bounding sphere to compute.
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* @param {BoundingSphere} result The bounding sphere onto which to store the result.
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* @returns {BoundingSphereState} BoundingSphereState.DONE if the result contains the bounding sphere,
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* BoundingSphereState.PENDING if the result is still being computed, or
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* BoundingSphereState.FAILED if the entity has no visualization in the current scene.
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* @private
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*/
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BillboardVisualizer.prototype.getBoundingSphere = function(entity, result) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(entity)) {
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throw new DeveloperError('entity is required.');
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}
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if (!defined(result)) {
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throw new DeveloperError('result is required.');
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}
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//>>includeEnd('debug');
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var item = this._items.get(entity.id);
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if (!defined(item) || !defined(item.billboard)) {
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return BoundingSphereState.FAILED;
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}
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var billboard = item.billboard;
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if (billboard.heightReference === HeightReference.NONE) {
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result.center = Cartesian3.clone(billboard.position, result.center);
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} else {
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if (!defined(billboard._clampedPosition)) {
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return BoundingSphereState.PENDING;
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}
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result.center = Cartesian3.clone(billboard._clampedPosition, result.center);
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}
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result.radius = 0;
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return BoundingSphereState.DONE;
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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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*
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* @returns {Boolean} True if this object was destroyed; otherwise, false.
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*/
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BillboardVisualizer.prototype.isDestroyed = function() {
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return false;
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};
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/**
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* Removes and destroys all primitives created by this instance.
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*/
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BillboardVisualizer.prototype.destroy = function() {
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this._entityCollection.collectionChanged.removeEventListener(BillboardVisualizer.prototype._onCollectionChanged, this);
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var entities = this._entityCollection.values;
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for (var i = 0; i < entities.length; i++) {
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this._cluster.removeBillboard(entities[i]);
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}
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return destroyObject(this);
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};
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BillboardVisualizer.prototype._onCollectionChanged = function(entityCollection, added, removed, changed) {
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var i;
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var entity;
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var items = this._items;
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var cluster = this._cluster;
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for (i = added.length - 1; i > -1; i--) {
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entity = added[i];
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if (defined(entity._billboard) && defined(entity._position)) {
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items.set(entity.id, new EntityData(entity));
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}
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}
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for (i = changed.length - 1; i > -1; i--) {
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entity = changed[i];
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if (defined(entity._billboard) && defined(entity._position)) {
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if (!items.contains(entity.id)) {
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items.set(entity.id, new EntityData(entity));
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}
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} else {
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returnPrimitive(items.get(entity.id), entity, cluster);
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items.remove(entity.id);
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}
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}
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for (i = removed.length - 1; i > -1; i--) {
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entity = removed[i];
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returnPrimitive(items.get(entity.id), entity, cluster);
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items.remove(entity.id);
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}
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};
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function returnPrimitive(item, entity, cluster) {
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if (defined(item)) {
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item.billboard = undefined;
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cluster.removeBillboard(entity);
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}
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}
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export default BillboardVisualizer;
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