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CompositeMaterialProperty.js
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CompositeMaterialProperty.js
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define([
'../Core/defined',
'../Core/defineProperties',
'../Core/DeveloperError',
'../Core/Event',
'./CompositeProperty',
'./Property'
], function(
defined,
defineProperties,
DeveloperError,
Event,
CompositeProperty,
Property) {
'use strict';
/**
* A {@link CompositeProperty} which is also a {@link MaterialProperty}.
*
* @alias CompositeMaterialProperty
* @constructor
*/
function CompositeMaterialProperty() {
this._definitionChanged = new Event();
this._composite = new CompositeProperty();
this._composite.definitionChanged.addEventListener(CompositeMaterialProperty.prototype._raiseDefinitionChanged, this);
}
defineProperties(CompositeMaterialProperty.prototype, {
/**
* Gets a value indicating if this property is constant. A property is considered
* constant if getValue always returns the same result for the current definition.
* @memberof CompositeMaterialProperty.prototype
*
* @type {Boolean}
* @readonly
*/
isConstant : {
get : function() {
return this._composite.isConstant;
}
},
/**
* Gets the event that is raised whenever the definition of this property changes.
* The definition is changed whenever setValue is called with data different
* than the current value.
* @memberof CompositeMaterialProperty.prototype
*
* @type {Event}
* @readonly
*/
definitionChanged : {
get : function() {
return this._definitionChanged;
}
},
/**
* Gets the interval collection.
* @memberof CompositeMaterialProperty.prototype
*
* @type {TimeIntervalCollection}
*/
intervals : {
get : function() {
return this._composite._intervals;
}
}
});
/**
* Gets the {@link Material} type at the provided time.
*
* @param {JulianDate} time The time for which to retrieve the type.
* @returns {String} The type of material.
*/
CompositeMaterialProperty.prototype.getType = function(time) {
//>>includeStart('debug', pragmas.debug);
if (!defined(time)) {
throw new DeveloperError('time is required');
}
//>>includeEnd('debug');
var innerProperty = this._composite._intervals.findDataForIntervalContainingDate(time);
if (defined(innerProperty)) {
return innerProperty.getType(time);
}
return undefined;
};
/**
* Gets the value of the property at the provided time.
*
* @param {JulianDate} time The time for which to retrieve the value.
* @param {Object} [result] The object to store the value into, if omitted, a new instance is created and returned.
* @returns {Object} The modified result parameter or a new instance if the result parameter was not supplied.
*/
CompositeMaterialProperty.prototype.getValue = function(time, result) {
//>>includeStart('debug', pragmas.debug);
if (!defined(time)) {
throw new DeveloperError('time is required');
}
//>>includeEnd('debug');
var innerProperty = this._composite._intervals.findDataForIntervalContainingDate(time);
if (defined(innerProperty)) {
return innerProperty.getValue(time, result);
}
return undefined;
};
/**
* Compares this property to the provided property and returns
* <code>true</code> if they are equal, <code>false</code> otherwise.
*
* @param {Property} [other] The other property.
* @returns {Boolean} <code>true</code> if left and right are equal, <code>false</code> otherwise.
*/
CompositeMaterialProperty.prototype.equals = function(other) {
return this === other || //
(other instanceof CompositeMaterialProperty && //
this._composite.equals(other._composite, Property.equals));
};
/**
* @private
*/
CompositeMaterialProperty.prototype._raiseDefinitionChanged = function() {
this._definitionChanged.raiseEvent(this);
};
return CompositeMaterialProperty;
});