import Cartesian3 from '../Core/Cartesian3.js';
|
import Cartographic from '../Core/Cartographic.js';
|
import Check from '../Core/Check.js';
|
import createGuid from '../Core/createGuid.js';
|
import defaultValue from '../Core/defaultValue.js';
|
import defined from '../Core/defined.js';
|
import DeveloperError from '../Core/DeveloperError.js';
|
import Event from '../Core/Event.js';
|
import CesiumMath from '../Core/Math.js';
|
import Matrix3 from '../Core/Matrix3.js';
|
import Matrix4 from '../Core/Matrix4.js';
|
import Quaternion from '../Core/Quaternion.js';
|
import Transforms from '../Core/Transforms.js';
|
import GroundPolylinePrimitive from '../Scene/GroundPolylinePrimitive.js';
|
import GroundPrimitive from '../Scene/GroundPrimitive.js';
|
import HeightReference from '../Scene/HeightReference.js';
|
import BillboardGraphics from './BillboardGraphics.js';
|
import BoxGraphics from './BoxGraphics.js';
|
import ConstantPositionProperty from './ConstantPositionProperty.js';
|
import CorridorGraphics from './CorridorGraphics.js';
|
import createPropertyDescriptor from './createPropertyDescriptor.js';
|
import createRawPropertyDescriptor from './createRawPropertyDescriptor.js';
|
import CylinderGraphics from './CylinderGraphics.js';
|
import EllipseGraphics from './EllipseGraphics.js';
|
import EllipsoidGraphics from './EllipsoidGraphics.js';
|
import LabelGraphics from './LabelGraphics.js';
|
import ModelGraphics from './ModelGraphics.js';
|
import Cesium3DTilesetGraphics from './Cesium3DTilesetGraphics.js';
|
import PathGraphics from './PathGraphics.js';
|
import PlaneGraphics from './PlaneGraphics.js';
|
import PointGraphics from './PointGraphics.js';
|
import PolygonGraphics from './PolygonGraphics.js';
|
import PolylineGraphics from './PolylineGraphics.js';
|
import PolylineVolumeGraphics from './PolylineVolumeGraphics.js';
|
import Property from './Property.js';
|
import PropertyBag from './PropertyBag.js';
|
import RectangleGraphics from './RectangleGraphics.js';
|
import WallGraphics from './WallGraphics.js';
|
|
var cartoScratch = new Cartographic();
|
|
function createConstantPositionProperty(value) {
|
return new ConstantPositionProperty(value);
|
}
|
|
function createPositionPropertyDescriptor(name) {
|
return createPropertyDescriptor(name, undefined, createConstantPositionProperty);
|
}
|
|
function createPropertyTypeDescriptor(name, Type) {
|
return createPropertyDescriptor(name, undefined, function(value) {
|
if (value instanceof Type) {
|
return value;
|
}
|
return new Type(value);
|
});
|
}
|
|
/**
|
* Entity instances aggregate multiple forms of visualization into a single high-level object.
|
* They can be created manually and added to {@link Viewer#entities} or be produced by
|
* data sources, such as {@link CzmlDataSource} and {@link GeoJsonDataSource}.
|
* @alias Entity
|
* @constructor
|
*
|
* @param {Object} [options] Object with the following properties:
|
* @param {String} [options.id] A unique identifier for this object. If none is provided, a GUID is generated.
|
* @param {String} [options.name] A human readable name to display to users. It does not have to be unique.
|
* @param {TimeIntervalCollection} [options.availability] The availability, if any, associated with this object.
|
* @param {Boolean} [options.show] A boolean value indicating if the entity and its children are displayed.
|
* @param {Property} [options.description] A string Property specifying an HTML description for this entity.
|
* @param {PositionProperty} [options.position] A Property specifying the entity position.
|
* @param {Property} [options.orientation] A Property specifying the entity orientation.
|
* @param {Property} [options.viewFrom] A suggested initial offset for viewing this object.
|
* @param {Entity} [options.parent] A parent entity to associate with this entity.
|
* @param {BillboardGraphics} [options.billboard] A billboard to associate with this entity.
|
* @param {BoxGraphics} [options.box] A box to associate with this entity.
|
* @param {CorridorGraphics} [options.corridor] A corridor to associate with this entity.
|
* @param {CylinderGraphics} [options.cylinder] A cylinder to associate with this entity.
|
* @param {EllipseGraphics} [options.ellipse] A ellipse to associate with this entity.
|
* @param {EllipsoidGraphics} [options.ellipsoid] A ellipsoid to associate with this entity.
|
* @param {LabelGraphics} [options.label] A options.label to associate with this entity.
|
* @param {ModelGraphics} [options.model] A model to associate with this entity.
|
* @param {Cesium3DTilesetGraphics} [options.tileset] A 3D Tiles tileset to associate with this entity.
|
* @param {PathGraphics} [options.path] A path to associate with this entity.
|
* @param {PlaneGraphics} [options.plane] A plane to associate with this entity.
|
* @param {PointGraphics} [options.point] A point to associate with this entity.
|
* @param {PolygonGraphics} [options.polygon] A polygon to associate with this entity.
|
* @param {PolylineGraphics} [options.polyline] A polyline to associate with this entity.
|
* @param {PropertyBag} [options.properties] Arbitrary properties to associate with this entity.
|
* @param {PolylineVolumeGraphics} [options.polylineVolume] A polylineVolume to associate with this entity.
|
* @param {RectangleGraphics} [options.rectangle] A rectangle to associate with this entity.
|
* @param {WallGraphics} [options.wall] A wall to associate with this entity.
|
*
|
* @see {@link https://cesium.com/docs/tutorials/creating-entities/|Creating Entities}
|
*/
|
function Entity(options) {
|
options = defaultValue(options, defaultValue.EMPTY_OBJECT);
|
|
var id = options.id;
|
if (!defined(id)) {
|
id = createGuid();
|
}
|
|
this._availability = undefined;
|
this._id = id;
|
this._definitionChanged = new Event();
|
this._name = options.name;
|
this._show = defaultValue(options.show, true);
|
this._parent = undefined;
|
this._propertyNames = ['billboard', 'box', 'corridor', 'cylinder', 'description', 'ellipse', //
|
'ellipsoid', 'label', 'model', 'tileset', 'orientation', 'path', 'plane', 'point', 'polygon', //
|
'polyline', 'polylineVolume', 'position', 'properties', 'rectangle', 'viewFrom', 'wall'];
|
|
this._billboard = undefined;
|
this._billboardSubscription = undefined;
|
this._box = undefined;
|
this._boxSubscription = undefined;
|
this._corridor = undefined;
|
this._corridorSubscription = undefined;
|
this._cylinder = undefined;
|
this._cylinderSubscription = undefined;
|
this._description = undefined;
|
this._descriptionSubscription = undefined;
|
this._ellipse = undefined;
|
this._ellipseSubscription = undefined;
|
this._ellipsoid = undefined;
|
this._ellipsoidSubscription = undefined;
|
this._label = undefined;
|
this._labelSubscription = undefined;
|
this._model = undefined;
|
this._modelSubscription = undefined;
|
this._tileset = undefined;
|
this._tilesetSubscription = undefined;
|
this._orientation = undefined;
|
this._orientationSubscription = undefined;
|
this._path = undefined;
|
this._pathSubscription = undefined;
|
this._plane = undefined;
|
this._planeSubscription = undefined;
|
this._point = undefined;
|
this._pointSubscription = undefined;
|
this._polygon = undefined;
|
this._polygonSubscription = undefined;
|
this._polyline = undefined;
|
this._polylineSubscription = undefined;
|
this._polylineVolume = undefined;
|
this._polylineVolumeSubscription = undefined;
|
this._position = undefined;
|
this._positionSubscription = undefined;
|
this._properties = undefined;
|
this._propertiesSubscription = undefined;
|
this._rectangle = undefined;
|
this._rectangleSubscription = undefined;
|
this._viewFrom = undefined;
|
this._viewFromSubscription = undefined;
|
this._wall = undefined;
|
this._wallSubscription = undefined;
|
this._children = [];
|
|
/**
|
* Gets or sets the entity collection that this entity belongs to.
|
* @type {EntityCollection}
|
*/
|
this.entityCollection = undefined;
|
|
this.parent = options.parent;
|
this.merge(options);
|
}
|
|
function updateShow(entity, children, isShowing) {
|
var length = children.length;
|
for (var i = 0; i < length; i++) {
|
var child = children[i];
|
var childShow = child._show;
|
var oldValue = !isShowing && childShow;
|
var newValue = isShowing && childShow;
|
if (oldValue !== newValue) {
|
updateShow(child, child._children, isShowing);
|
}
|
}
|
entity._definitionChanged.raiseEvent(entity, 'isShowing', isShowing, !isShowing);
|
}
|
|
Object.defineProperties(Entity.prototype, {
|
/**
|
* The availability, if any, associated with this object.
|
* If availability is undefined, it is assumed that this object's
|
* other properties will return valid data for any provided time.
|
* If availability exists, the objects other properties will only
|
* provide valid data if queried within the given interval.
|
* @memberof Entity.prototype
|
* @type {TimeIntervalCollection}
|
*/
|
availability : createRawPropertyDescriptor('availability'),
|
/**
|
* Gets the unique ID associated with this object.
|
* @memberof Entity.prototype
|
* @type {String}
|
*/
|
id : {
|
get : function() {
|
return this._id;
|
}
|
},
|
/**
|
* Gets the event that is raised whenever a property or sub-property is changed or modified.
|
* @memberof Entity.prototype
|
*
|
* @type {Event}
|
* @readonly
|
*/
|
definitionChanged : {
|
get : function() {
|
return this._definitionChanged;
|
}
|
},
|
/**
|
* Gets or sets the name of the object. The name is intended for end-user
|
* consumption and does not need to be unique.
|
* @memberof Entity.prototype
|
* @type {String}
|
*/
|
name : createRawPropertyDescriptor('name'),
|
/**
|
* Gets or sets whether this entity should be displayed. When set to true,
|
* the entity is only displayed if the parent entity's show property is also true.
|
* @memberof Entity.prototype
|
* @type {Boolean}
|
*/
|
show : {
|
get : function() {
|
return this._show;
|
},
|
set : function(value) {
|
//>>includeStart('debug', pragmas.debug);
|
if (!defined(value)) {
|
throw new DeveloperError('value is required.');
|
}
|
//>>includeEnd('debug');
|
|
if (value === this._show) {
|
return;
|
}
|
|
var wasShowing = this.isShowing;
|
this._show = value;
|
var isShowing = this.isShowing;
|
|
if (wasShowing !== isShowing) {
|
updateShow(this, this._children, isShowing);
|
}
|
|
this._definitionChanged.raiseEvent(this, 'show', value, !value);
|
}
|
},
|
/**
|
* Gets whether this entity is being displayed, taking into account
|
* the visibility of any ancestor entities.
|
* @memberof Entity.prototype
|
* @type {Boolean}
|
*/
|
isShowing : {
|
get : function() {
|
return this._show && (!defined(this.entityCollection) || this.entityCollection.show) && (!defined(this._parent) || this._parent.isShowing);
|
}
|
},
|
/**
|
* Gets or sets the parent object.
|
* @memberof Entity.prototype
|
* @type {Entity}
|
*/
|
parent : {
|
get : function() {
|
return this._parent;
|
},
|
set : function(value) {
|
var oldValue = this._parent;
|
|
if (oldValue === value) {
|
return;
|
}
|
|
var wasShowing = this.isShowing;
|
if (defined(oldValue)) {
|
var index = oldValue._children.indexOf(this);
|
oldValue._children.splice(index, 1);
|
}
|
|
this._parent = value;
|
if (defined(value)) {
|
value._children.push(this);
|
}
|
|
var isShowing = this.isShowing;
|
|
if (wasShowing !== isShowing) {
|
updateShow(this, this._children, isShowing);
|
}
|
|
this._definitionChanged.raiseEvent(this, 'parent', value, oldValue);
|
}
|
},
|
/**
|
* Gets the names of all properties registered on this instance.
|
* @memberof Entity.prototype
|
* @type {Array}
|
*/
|
propertyNames : {
|
get : function() {
|
return this._propertyNames;
|
}
|
},
|
/**
|
* Gets or sets the billboard.
|
* @memberof Entity.prototype
|
* @type {BillboardGraphics}
|
*/
|
billboard : createPropertyTypeDescriptor('billboard', BillboardGraphics),
|
/**
|
* Gets or sets the box.
|
* @memberof Entity.prototype
|
* @type {BoxGraphics}
|
*/
|
box : createPropertyTypeDescriptor('box', BoxGraphics),
|
/**
|
* Gets or sets the corridor.
|
* @memberof Entity.prototype
|
* @type {CorridorGraphics}
|
*/
|
corridor : createPropertyTypeDescriptor('corridor', CorridorGraphics),
|
/**
|
* Gets or sets the cylinder.
|
* @memberof Entity.prototype
|
* @type {CylinderGraphics}
|
*/
|
cylinder : createPropertyTypeDescriptor('cylinder', CylinderGraphics),
|
/**
|
* Gets or sets the description.
|
* @memberof Entity.prototype
|
* @type {Property}
|
*/
|
description : createPropertyDescriptor('description'),
|
/**
|
* Gets or sets the ellipse.
|
* @memberof Entity.prototype
|
* @type {EllipseGraphics}
|
*/
|
ellipse : createPropertyTypeDescriptor('ellipse', EllipseGraphics),
|
/**
|
* Gets or sets the ellipsoid.
|
* @memberof Entity.prototype
|
* @type {EllipsoidGraphics}
|
*/
|
ellipsoid : createPropertyTypeDescriptor('ellipsoid', EllipsoidGraphics),
|
/**
|
* Gets or sets the label.
|
* @memberof Entity.prototype
|
* @type {LabelGraphics}
|
*/
|
label : createPropertyTypeDescriptor('label', LabelGraphics),
|
/**
|
* Gets or sets the model.
|
* @memberof Entity.prototype
|
* @type {ModelGraphics}
|
*/
|
model : createPropertyTypeDescriptor('model', ModelGraphics),
|
/**
|
* Gets or sets the tileset.
|
* @memberof Entity.prototype
|
* @type {Cesium3DTilesetGraphics}
|
*/
|
tileset : createPropertyTypeDescriptor('tileset', Cesium3DTilesetGraphics),
|
/**
|
* Gets or sets the orientation.
|
* @memberof Entity.prototype
|
* @type {Property}
|
*/
|
orientation : createPropertyDescriptor('orientation'),
|
/**
|
* Gets or sets the path.
|
* @memberof Entity.prototype
|
* @type {PathGraphics}
|
*/
|
path : createPropertyTypeDescriptor('path', PathGraphics),
|
/**
|
* Gets or sets the plane.
|
* @memberof Entity.prototype
|
* @type {PlaneGraphics}
|
*/
|
plane : createPropertyTypeDescriptor('plane', PlaneGraphics),
|
/**
|
* Gets or sets the point graphic.
|
* @memberof Entity.prototype
|
* @type {PointGraphics}
|
*/
|
point : createPropertyTypeDescriptor('point', PointGraphics),
|
/**
|
* Gets or sets the polygon.
|
* @memberof Entity.prototype
|
* @type {PolygonGraphics}
|
*/
|
polygon : createPropertyTypeDescriptor('polygon', PolygonGraphics),
|
/**
|
* Gets or sets the polyline.
|
* @memberof Entity.prototype
|
* @type {PolylineGraphics}
|
*/
|
polyline : createPropertyTypeDescriptor('polyline', PolylineGraphics),
|
/**
|
* Gets or sets the polyline volume.
|
* @memberof Entity.prototype
|
* @type {PolylineVolumeGraphics}
|
*/
|
polylineVolume : createPropertyTypeDescriptor('polylineVolume', PolylineVolumeGraphics),
|
/**
|
* Gets or sets the bag of arbitrary properties associated with this entity.
|
* @memberof Entity.prototype
|
* @type {PropertyBag}
|
*/
|
properties : createPropertyTypeDescriptor('properties', PropertyBag),
|
/**
|
* Gets or sets the position.
|
* @memberof Entity.prototype
|
* @type {PositionProperty}
|
*/
|
position : createPositionPropertyDescriptor('position'),
|
/**
|
* Gets or sets the rectangle.
|
* @memberof Entity.prototype
|
* @type {RectangleGraphics}
|
*/
|
rectangle : createPropertyTypeDescriptor('rectangle', RectangleGraphics),
|
/**
|
* Gets or sets the suggested initial offset when tracking this object.
|
* The offset is typically defined in the east-north-up reference frame,
|
* but may be another frame depending on the object's velocity.
|
* @memberof Entity.prototype
|
* @type {Property}
|
*/
|
viewFrom : createPropertyDescriptor('viewFrom'),
|
/**
|
* Gets or sets the wall.
|
* @memberof Entity.prototype
|
* @type {WallGraphics}
|
*/
|
wall : createPropertyTypeDescriptor('wall', WallGraphics)
|
});
|
|
/**
|
* Given a time, returns true if this object should have data during that time.
|
*
|
* @param {JulianDate} time The time to check availability for.
|
* @returns {Boolean} true if the object should have data during the provided time, false otherwise.
|
*/
|
Entity.prototype.isAvailable = function(time) {
|
//>>includeStart('debug', pragmas.debug);
|
if (!defined(time)) {
|
throw new DeveloperError('time is required.');
|
}
|
//>>includeEnd('debug');
|
|
var availability = this._availability;
|
return !defined(availability) || availability.contains(time);
|
};
|
|
/**
|
* Adds a property to this object. Once a property is added, it can be
|
* observed with {@link Entity#definitionChanged} and composited
|
* with {@link CompositeEntityCollection}
|
*
|
* @param {String} propertyName The name of the property to add.
|
*
|
* @exception {DeveloperError} "propertyName" is a reserved property name.
|
* @exception {DeveloperError} "propertyName" is already a registered property.
|
*/
|
Entity.prototype.addProperty = function(propertyName) {
|
var propertyNames = this._propertyNames;
|
|
//>>includeStart('debug', pragmas.debug);
|
if (!defined(propertyName)) {
|
throw new DeveloperError('propertyName is required.');
|
}
|
if (propertyNames.indexOf(propertyName) !== -1) {
|
throw new DeveloperError(propertyName + ' is already a registered property.');
|
}
|
if (propertyName in this) {
|
throw new DeveloperError(propertyName + ' is a reserved property name.');
|
}
|
//>>includeEnd('debug');
|
|
propertyNames.push(propertyName);
|
Object.defineProperty(this, propertyName, createRawPropertyDescriptor(propertyName, true));
|
};
|
|
/**
|
* Removed a property previously added with addProperty.
|
*
|
* @param {String} propertyName The name of the property to remove.
|
*
|
* @exception {DeveloperError} "propertyName" is a reserved property name.
|
* @exception {DeveloperError} "propertyName" is not a registered property.
|
*/
|
Entity.prototype.removeProperty = function(propertyName) {
|
var propertyNames = this._propertyNames;
|
var index = propertyNames.indexOf(propertyName);
|
|
//>>includeStart('debug', pragmas.debug);
|
if (!defined(propertyName)) {
|
throw new DeveloperError('propertyName is required.');
|
}
|
if (index === -1) {
|
throw new DeveloperError(propertyName + ' is not a registered property.');
|
}
|
//>>includeEnd('debug');
|
|
this._propertyNames.splice(index, 1);
|
delete this[propertyName];
|
};
|
|
/**
|
* Assigns each unassigned property on this object to the value
|
* of the same property on the provided source object.
|
*
|
* @param {Entity} source The object to be merged into this object.
|
*/
|
Entity.prototype.merge = function(source) {
|
//>>includeStart('debug', pragmas.debug);
|
if (!defined(source)) {
|
throw new DeveloperError('source is required.');
|
}
|
//>>includeEnd('debug');
|
|
//Name, show, and availability are not Property objects and are currently handled differently.
|
//source.show is intentionally ignored because this.show always has a value.
|
this.name = defaultValue(this.name, source.name);
|
this.availability = defaultValue(this.availability, source.availability);
|
|
var propertyNames = this._propertyNames;
|
var sourcePropertyNames = defined(source._propertyNames) ? source._propertyNames : Object.keys(source);
|
var propertyNamesLength = sourcePropertyNames.length;
|
for (var i = 0; i < propertyNamesLength; i++) {
|
var name = sourcePropertyNames[i];
|
|
//Ignore parent when merging, this only happens at construction time.
|
if (name === 'parent') {
|
continue;
|
}
|
|
var targetProperty = this[name];
|
var sourceProperty = source[name];
|
|
//Custom properties that are registered on the source entity must also
|
//get registered on this entity.
|
if (!defined(targetProperty) && propertyNames.indexOf(name) === -1) {
|
this.addProperty(name);
|
}
|
|
if (defined(sourceProperty)) {
|
if (defined(targetProperty)) {
|
if (defined(targetProperty.merge)) {
|
targetProperty.merge(sourceProperty);
|
}
|
} else if (defined(sourceProperty.merge) && defined(sourceProperty.clone)) {
|
this[name] = sourceProperty.clone();
|
} else {
|
this[name] = sourceProperty;
|
}
|
}
|
}
|
};
|
|
var matrix3Scratch = new Matrix3();
|
var positionScratch = new Cartesian3();
|
var orientationScratch = new Quaternion();
|
|
/**
|
* Computes the model matrix for the entity's transform at specified time. Returns undefined if orientation or position
|
* are undefined.
|
*
|
* @param {JulianDate} time The time to retrieve model matrix for.
|
* @param {Matrix4} [result] The object onto which to store the result.
|
*
|
* @returns {Matrix4} The modified result parameter or a new Matrix4 instance if one was not provided. Result is undefined if position or orientation are undefined.
|
*/
|
Entity.prototype.computeModelMatrix = function(time, result) {
|
//>>includeStart('debug', pragmas.debug);
|
Check.typeOf.object('time', time);
|
//>>includeEnd('debug');
|
var position = Property.getValueOrUndefined(this._position, time, positionScratch);
|
if (!defined(position)) {
|
return undefined;
|
}
|
|
var orientation = Property.getValueOrUndefined(this._orientation, time, orientationScratch);
|
if (!defined(orientation)) {
|
result = Transforms.eastNorthUpToFixedFrame(position, undefined, result);
|
} else {
|
result = Matrix4.fromRotationTranslation(Matrix3.fromQuaternion(orientation, matrix3Scratch), position, result);
|
}
|
return result;
|
};
|
|
/**
|
* @private
|
*/
|
Entity.prototype.computeModelMatrixForHeightReference = function(time, heightReferenceProperty, heightOffset, ellipsoid, result) {
|
//>>includeStart('debug', pragmas.debug);
|
Check.typeOf.object('time', time);
|
//>>includeEnd('debug');
|
var heightReference = Property.getValueOrDefault(heightReferenceProperty, time, HeightReference.NONE);
|
var position = Property.getValueOrUndefined(this._position, time, positionScratch);
|
if (heightReference === HeightReference.NONE || !defined(position) || Cartesian3.equalsEpsilon(position, Cartesian3.ZERO, CesiumMath.EPSILON8)) {
|
return this.computeModelMatrix(time, result);
|
}
|
|
var carto = ellipsoid.cartesianToCartographic(position, cartoScratch);
|
if (heightReference === HeightReference.CLAMP_TO_GROUND) {
|
carto.height = heightOffset;
|
} else {
|
carto.height += heightOffset;
|
}
|
position = ellipsoid.cartographicToCartesian(carto, position);
|
|
var orientation = Property.getValueOrUndefined(this._orientation, time, orientationScratch);
|
if (!defined(orientation)) {
|
result = Transforms.eastNorthUpToFixedFrame(position, undefined, result);
|
} else {
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result = Matrix4.fromRotationTranslation(Matrix3.fromQuaternion(orientation, matrix3Scratch), position, result);
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}
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return result;
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};
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/**
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* Checks if the given Scene supports materials besides Color on Entities draped on terrain or 3D Tiles.
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* If this feature is not supported, Entities with non-color materials but no `height` will
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* instead be rendered as if height is 0.
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*
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* @param {Scene} scene The current scene.
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* @returns {Boolean} Whether or not the current scene supports materials for entities on terrain.
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*/
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Entity.supportsMaterialsforEntitiesOnTerrain = function(scene) {
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return GroundPrimitive.supportsMaterials(scene);
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};
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/**
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* Checks if the given Scene supports polylines clamped to terrain or 3D Tiles.
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* If this feature is not supported, Entities with PolylineGraphics will be rendered with vertices at
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* the provided heights and using the `arcType` parameter instead of clamped to the ground.
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*
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* @param {Scene} scene The current scene.
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* @returns {Boolean} Whether or not the current scene supports polylines on terrain or 3D TIles.
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*/
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Entity.supportsPolylinesOnTerrain = function(scene) {
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return GroundPolylinePrimitive.isSupported(scene);
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};
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export default Entity;
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