import AssociativeArray from '../Core/AssociativeArray.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 defaultValue from '../Core/defaultValue.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 LabelStyle from '../Scene/LabelStyle.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 defaultScale = 1.0;
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var defaultFont = '30px sans-serif';
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var defaultStyle = LabelStyle.FILL;
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var defaultFillColor = Color.WHITE;
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var defaultOutlineColor = Color.BLACK;
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var defaultOutlineWidth = 1.0;
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var defaultShowBackground = false;
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var defaultBackgroundColor = new Color(0.165, 0.165, 0.165, 0.8);
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var defaultBackgroundPadding = new Cartesian2(7, 5);
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var defaultPixelOffset = Cartesian2.ZERO;
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var defaultEyeOffset = Cartesian3.ZERO;
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var defaultHeightReference = HeightReference.NONE;
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var defaultHorizontalOrigin = HorizontalOrigin.CENTER;
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var defaultVerticalOrigin = VerticalOrigin.CENTER;
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var positionScratch = new Cartesian3();
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var fillColorScratch = new Color();
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var outlineColorScratch = new Color();
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var backgroundColorScratch = new Color();
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var backgroundPaddingScratch = new Cartesian2();
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var eyeOffsetScratch = new Cartesian3();
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var pixelOffsetScratch = new Cartesian2();
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var translucencyByDistanceScratch = new NearFarScalar();
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var pixelOffsetScaleByDistanceScratch = new NearFarScalar();
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var scaleByDistanceScratch = new NearFarScalar();
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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.label = undefined;
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this.index = undefined;
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}
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/**
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* A {@link Visualizer} which maps the {@link LabelGraphics} instance
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* in {@link Entity#label} to a {@link Label}.
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* @alias LabelVisualizer
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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 LabelVisualizer(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(LabelVisualizer.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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LabelVisualizer.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 labelGraphics = entity._label;
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var text;
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var label = item.label;
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var show = entity.isShowing && entity.isAvailable(time) && Property.getValueOrDefault(labelGraphics._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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text = Property.getValueOrUndefined(labelGraphics._text, time);
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show = defined(position) && defined(text);
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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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var updateClamping = false;
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var heightReference = Property.getValueOrDefault(labelGraphics._heightReference, time, defaultHeightReference);
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if (!defined(label)) {
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label = cluster.getLabel(entity);
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label.id = entity;
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item.label = label;
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// If this new label happens to have a position and height reference that match our new values,
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// label._updateClamping will not be called automatically. That's a problem because the clamped
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// height may be based on different terrain than is now loaded. So we'll manually call
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// _updateClamping below.
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updateClamping = Cartesian3.equals(label.position, position) && label.heightReference === heightReference;
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}
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label.show = true;
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label.position = position;
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label.text = text;
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label.scale = Property.getValueOrDefault(labelGraphics._scale, time, defaultScale);
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label.font = Property.getValueOrDefault(labelGraphics._font, time, defaultFont);
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label.style = Property.getValueOrDefault(labelGraphics._style, time, defaultStyle);
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label.fillColor = Property.getValueOrDefault(labelGraphics._fillColor, time, defaultFillColor, fillColorScratch);
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label.outlineColor = Property.getValueOrDefault(labelGraphics._outlineColor, time, defaultOutlineColor, outlineColorScratch);
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label.outlineWidth = Property.getValueOrDefault(labelGraphics._outlineWidth, time, defaultOutlineWidth);
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label.showBackground = Property.getValueOrDefault(labelGraphics._showBackground, time, defaultShowBackground);
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label.backgroundColor = Property.getValueOrDefault(labelGraphics._backgroundColor, time, defaultBackgroundColor, backgroundColorScratch);
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label.backgroundPadding = Property.getValueOrDefault(labelGraphics._backgroundPadding, time, defaultBackgroundPadding, backgroundPaddingScratch);
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label.pixelOffset = Property.getValueOrDefault(labelGraphics._pixelOffset, time, defaultPixelOffset, pixelOffsetScratch);
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label.eyeOffset = Property.getValueOrDefault(labelGraphics._eyeOffset, time, defaultEyeOffset, eyeOffsetScratch);
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label.heightReference = heightReference;
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label.horizontalOrigin = Property.getValueOrDefault(labelGraphics._horizontalOrigin, time, defaultHorizontalOrigin);
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label.verticalOrigin = Property.getValueOrDefault(labelGraphics._verticalOrigin, time, defaultVerticalOrigin);
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label.translucencyByDistance = Property.getValueOrUndefined(labelGraphics._translucencyByDistance, time, translucencyByDistanceScratch);
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label.pixelOffsetScaleByDistance = Property.getValueOrUndefined(labelGraphics._pixelOffsetScaleByDistance, time, pixelOffsetScaleByDistanceScratch);
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label.scaleByDistance = Property.getValueOrUndefined(labelGraphics._scaleByDistance, time, scaleByDistanceScratch);
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label.distanceDisplayCondition = Property.getValueOrUndefined(labelGraphics._distanceDisplayCondition, time, distanceDisplayConditionScratch);
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label.disableDepthTestDistance = Property.getValueOrUndefined(labelGraphics._disableDepthTestDistance, time);
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if (updateClamping) {
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label._updateClamping();
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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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LabelVisualizer.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.label)) {
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return BoundingSphereState.FAILED;
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}
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var label = item.label;
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result.center = Cartesian3.clone(defaultValue(label._clampedPosition, label.position), result.center);
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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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LabelVisualizer.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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LabelVisualizer.prototype.destroy = function() {
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this._entityCollection.collectionChanged.removeEventListener(LabelVisualizer.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.removeLabel(entities[i]);
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}
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return destroyObject(this);
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};
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LabelVisualizer.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._label) && 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._label) && 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.label = undefined;
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cluster.removeLabel(entity);
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}
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}
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export default LabelVisualizer;
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