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import BoundingRectangle from "../Core/BoundingRectangle.js";
import Cartesian2 from "../Core/Cartesian2.js";
import Cartesian3 from "../Core/Cartesian3.js";
import Color from "../Core/Color.js";
import defined from "../Core/defined.js";
import destroyObject from "../Core/destroyObject.js";
import DeveloperError from "../Core/DeveloperError.js";
import DistanceDisplayCondition from "../Core/DistanceDisplayCondition.js";
import NearFarScalar from "../Core/NearFarScalar.js";
import HeightReference from "../Scene/HeightReference.js";
import HorizontalOrigin from "../Scene/HorizontalOrigin.js";
import VerticalOrigin from "../Scene/VerticalOrigin.js";
import BoundingSphereState from "./BoundingSphereState.js";
import Property from "./Property.js";
import SplitDirection from "../Scene/SplitDirection.js";
const defaultColor = Color.WHITE;
const defaultEyeOffset = Cartesian3.ZERO;
const defaultHeightReference = HeightReference.NONE;
const defaultPixelOffset = Cartesian2.ZERO;
const defaultScale = 1.0;
const defaultRotation = 0.0;
const defaultAlignedAxis = Cartesian3.ZERO;
const defaultHorizontalOrigin = HorizontalOrigin.CENTER;
const defaultVerticalOrigin = VerticalOrigin.CENTER;
const defaultSizeInMeters = false;
const defaultSplitDirection = SplitDirection.NONE;
const positionScratch = new Cartesian3();
const colorScratch = new Color();
const eyeOffsetScratch = new Cartesian3();
const pixelOffsetScratch = new Cartesian2();
const scaleByDistanceScratch = new NearFarScalar();
const translucencyByDistanceScratch = new NearFarScalar();
const pixelOffsetScaleByDistanceScratch = new NearFarScalar();
const boundingRectangleScratch = new BoundingRectangle();
const distanceDisplayConditionScratch = new DistanceDisplayCondition();
function EntityData(entity) {
this.entity = entity;
this.billboard = undefined;
this.textureValue = undefined;
}
/**
* A {@link Visualizer} which maps {@link Entity#billboard} to a {@link Billboard}.
* @alias BillboardVisualizer
* @constructor
*
* @param {EntityCluster} entityCluster The entity cluster to manage the collection of billboards and optionally cluster with other entities.
* @param {EntityCollection} entityCollection The entityCollection to visualize.
*/
function BillboardVisualizer(entityCluster, entityCollection) {
//>>includeStart('debug', pragmas.debug);
if (!defined(entityCluster)) {
throw new DeveloperError("entityCluster is required.");
}
Iif (!defined(entityCollection)) {
throw new DeveloperError("entityCollection is required.");
}
//>>includeEnd('debug');
entityCollection.collectionChanged.addEventListener(
BillboardVisualizer.prototype._onCollectionChanged,
this,
);
this._cluster = entityCluster;
this._entityCollection = entityCollection;
this._items = new AssociativeArray();
this._onCollectionChanged(entityCollection, entityCollection.values, [], []);
}
/**
* Updates the primitives created by 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.
*/
BillboardVisualizer.prototype.update = function (time) {
//>>includeStart('debug', pragmas.debug);
if (!defined(time)) {
throw new DeveloperError("time is required.");
}
//>>includeEnd('debug');
const items = this._items.values;
const cluster = this._cluster;
for (let i = 0, len = items.length; i < len; i++) {
const item = items[i];
const entity = item.entity;
const billboardGraphics = entity._billboard;
let textureValue;
let billboard = item.billboard;
let show =
entity.isShowing &&
entity.isAvailable(time) &&
Property.getValueOrDefault(billboardGraphics._show, time, true);
let position;
if (show) {
position = Property.getValueOrUndefined(
entity._position,
time,
positionScratch,
);
textureValue = Property.getValueOrUndefined(
billboardGraphics._image,
time,
);
show = defined(position) && defined(textureValue);
}
if (!show) {
//don't bother creating or updating anything else
returnPrimitive(item, entity, cluster);
continue;
}
Iif (!Property.isConstant(entity._position)) {
cluster._clusterDirty = true;
}
if (!defined(billboard)) {
billboard = cluster.getBillboard(entity);
billboard.id = entity;
item.billboard = billboard;
item.textureValue = undefined;
}
billboard.show = show;
billboard.position = position;
billboard.color = Property.getValueOrDefault(
billboardGraphics._color,
time,
defaultColor,
colorScratch,
);
billboard.eyeOffset = Property.getValueOrDefault(
billboardGraphics._eyeOffset,
time,
defaultEyeOffset,
eyeOffsetScratch,
);
billboard.heightReference = Property.getValueOrDefault(
billboardGraphics._heightReference,
time,
defaultHeightReference,
);
billboard.pixelOffset = Property.getValueOrDefault(
billboardGraphics._pixelOffset,
time,
defaultPixelOffset,
pixelOffsetScratch,
);
billboard.scale = Property.getValueOrDefault(
billboardGraphics._scale,
time,
defaultScale,
);
billboard.rotation = Property.getValueOrDefault(
billboardGraphics._rotation,
time,
defaultRotation,
);
billboard.alignedAxis = Property.getValueOrDefault(
billboardGraphics._alignedAxis,
time,
defaultAlignedAxis,
);
billboard.horizontalOrigin = Property.getValueOrDefault(
billboardGraphics._horizontalOrigin,
time,
defaultHorizontalOrigin,
);
billboard.verticalOrigin = Property.getValueOrDefault(
billboardGraphics._verticalOrigin,
time,
defaultVerticalOrigin,
);
billboard.width = Property.getValueOrUndefined(
billboardGraphics._width,
time,
);
billboard.height = Property.getValueOrUndefined(
billboardGraphics._height,
time,
);
billboard.scaleByDistance = Property.getValueOrUndefined(
billboardGraphics._scaleByDistance,
time,
scaleByDistanceScratch,
);
billboard.translucencyByDistance = Property.getValueOrUndefined(
billboardGraphics._translucencyByDistance,
time,
translucencyByDistanceScratch,
);
billboard.pixelOffsetScaleByDistance = Property.getValueOrUndefined(
billboardGraphics._pixelOffsetScaleByDistance,
time,
pixelOffsetScaleByDistanceScratch,
);
billboard.sizeInMeters = Property.getValueOrDefault(
billboardGraphics._sizeInMeters,
time,
defaultSizeInMeters,
);
billboard.distanceDisplayCondition = Property.getValueOrUndefined(
billboardGraphics._distanceDisplayCondition,
time,
distanceDisplayConditionScratch,
);
billboard.disableDepthTestDistance = Property.getValueOrUndefined(
billboardGraphics._disableDepthTestDistance,
time,
);
billboard.splitDirection = Property.getValueOrDefault(
billboardGraphics._splitDirection,
time,
defaultSplitDirection,
);
// Apply .image last, so any necessary property values are available
// in Billboard#_computeImageTextureSize before adding to the atlas.
if (item.textureValue !== textureValue) {
billboard.image = textureValue;
item.textureValue = textureValue;
}
const subRegion = Property.getValueOrUndefined(
billboardGraphics._imageSubRegion,
time,
boundingRectangleScratch,
);
if (defined(subRegion)) {
billboard.setImageSubRegion(billboard.image, subRegion);
}
}
return true;
};
/**
* 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
*/
BillboardVisualizer.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 item = this._items.get(entity.id);
if (!defined(item) || !defined(item.billboard)) {
return BoundingSphereState.FAILED;
}
const billboard = item.billboard;
if (billboard.heightReference === HeightReference.NONE) {
result.center = Cartesian3.clone(billboard.position, result.center);
} else E{
if (!defined(billboard._clampedPosition)) {
return BoundingSphereState.PENDING;
}
result.center = Cartesian3.clone(billboard._clampedPosition, result.center);
}
result.radius = 0;
return BoundingSphereState.DONE;
};
/**
* Returns true if this object was destroyed; otherwise, false.
*
* @returns {boolean} True if this object was destroyed; otherwise, false.
*/
BillboardVisualizer.prototype.isDestroyed = function () {
return false;
};
/**
* Removes and destroys all primitives created by this instance.
*/
BillboardVisualizer.prototype.destroy = function () {
this._entityCollection.collectionChanged.removeEventListener(
BillboardVisualizer.prototype._onCollectionChanged,
this,
);
const entities = this._entityCollection.values;
for (let i = 0; i < entities.length; i++) {
this._cluster.removeBillboard(entities[i]);
}
return destroyObject(this);
};
BillboardVisualizer.prototype._onCollectionChanged = function (
entityCollection,
added,
removed,
changed,
) {
let i;
let entity;
const items = this._items;
const cluster = this._cluster;
for (i = added.length - 1; i > -1; i--) {
entity = added[i];
if (defined(entity._billboard) && defined(entity._position)) {
items.set(entity.id, new EntityData(entity));
}
}
for (i = changed.length - 1; i > -1; i--) {
entity = changed[i];
if (defined(entity._billboard) && defined(entity._position)) {
if (!items.contains(entity.id)) {
items.set(entity.id, new EntityData(entity));
}
} else {
returnPrimitive(items.get(entity.id), entity, cluster);
items.remove(entity.id);
}
}
for (i = removed.length - 1; i > -1; i--) {
entity = removed[i];
returnPrimitive(items.get(entity.id), entity, cluster);
items.remove(entity.id);
}
};
function returnPrimitive(item, entity, cluster) {
if (defined(item)) {
item.billboard = undefined;
cluster.removeBillboard(entity);
}
}
export default BillboardVisualizer;
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