97 lines
3.0 KiB
JavaScript
97 lines
3.0 KiB
JavaScript
define([
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'../Core/defined',
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'../Core/defineProperties',
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'../Core/DeveloperError',
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'../Core/Ellipsoid',
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'../Core/Event',
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'../Core/ReferenceFrame',
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'./Property'
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], function(
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defined,
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defineProperties,
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DeveloperError,
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Ellipsoid,
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Event,
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ReferenceFrame,
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Property) {
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'use strict';
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/**
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* This is a temporary class for scaling position properties to the WGS84 surface.
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* It will go away or be refactored to support data with arbitrary height references.
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* @private
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*/
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function ScaledPositionProperty(value) {
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this._definitionChanged = new Event();
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this._value = undefined;
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this._removeSubscription = undefined;
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this.setValue(value);
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}
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defineProperties(ScaledPositionProperty.prototype, {
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isConstant : {
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get : function() {
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return Property.isConstant(this._value);
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}
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},
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definitionChanged : {
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get : function() {
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return this._definitionChanged;
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}
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},
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referenceFrame : {
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get : function() {
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return defined(this._value) ? this._value.referenceFrame : ReferenceFrame.FIXED;
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}
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}
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});
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ScaledPositionProperty.prototype.getValue = function(time, result) {
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return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
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};
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ScaledPositionProperty.prototype.setValue = function(value) {
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if (this._value !== value) {
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this._value = value;
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if (defined(this._removeSubscription)) {
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this._removeSubscription();
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this._removeSubscription = undefined;
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}
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if (defined(value)) {
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this._removeSubscription = value.definitionChanged.addEventListener(this._raiseDefinitionChanged, this);
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}
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this._definitionChanged.raiseEvent(this);
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}
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};
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ScaledPositionProperty.prototype.getValueInReferenceFrame = function(time, referenceFrame, result) {
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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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if (!defined(referenceFrame)) {
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throw new DeveloperError('referenceFrame is required.');
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}
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//>>includeEnd('debug');
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if (!defined(this._value)) {
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return undefined;
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}
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result = this._value.getValueInReferenceFrame(time, referenceFrame, result);
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return defined(result) ? Ellipsoid.WGS84.scaleToGeodeticSurface(result, result) : undefined;
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};
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ScaledPositionProperty.prototype.equals = function(other) {
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return this === other || (other instanceof ScaledPositionProperty && this._value === other._value);
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};
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ScaledPositionProperty.prototype._raiseDefinitionChanged = function() {
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this._definitionChanged.raiseEvent(this);
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};
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return ScaledPositionProperty;
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});
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