/
PolylineDashMaterialProperty.js
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/
PolylineDashMaterialProperty.js
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import Color from '../Core/Color.js';
import defaultValue from '../Core/defaultValue.js';
import defined from '../Core/defined.js';
import defineProperties from '../Core/defineProperties.js';
import Event from '../Core/Event.js';
import createPropertyDescriptor from './createPropertyDescriptor.js';
import Property from './Property.js';
var defaultColor = Color.WHITE;
var defaultGapColor = Color.TRANSPARENT;
var defaultDashLength = 16.0;
var defaultDashPattern = 255.0;
/**
* A {@link MaterialProperty} that maps to polyline dash {@link Material} uniforms.
* @alias PolylineDashMaterialProperty
* @constructor
*
* @param {Object} [options] Object with the following properties:
* @param {Property} [options.color=Color.WHITE] A Property specifying the {@link Color} of the line.
* @param {Property} [options.gapColor=Color.TRANSPARENT] A Property specifying the {@link Color} of the gaps in the line.
* @param {Property} [options.dashLength=16.0] A numeric Property specifying the length of the dash pattern in pixels.
* @param {Property} [options.dashPattern=255.0] A numeric Property specifying a 16 bit pattern for the dash
*/
function PolylineDashMaterialProperty(options) {
options = defaultValue(options, defaultValue.EMPTY_OBJECT);
this._definitionChanged = new Event();
this._color = undefined;
this._colorSubscription = undefined;
this._gapColor = undefined;
this._gapColorSubscription = undefined;
this._dashLength = undefined;
this._dashLengthSubscription = undefined;
this._dashPattern = undefined;
this._dashPatternSubscription = undefined;
this.color = options.color;
this.gapColor = options.gapColor;
this.dashLength = options.dashLength;
this.dashPattern = options.dashPattern;
}
defineProperties(PolylineDashMaterialProperty.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 PolylineDashMaterialProperty.prototype
* @type {Boolean}
* @readonly
*/
isConstant : {
get : function() {
return (Property.isConstant(this._color) &&
Property.isConstant(this._gapColor) &&
Property.isConstant(this._dashLength) &&
Property.isConstant(this._dashPattern));
}
},
/**
* Gets the event that is raised whenever the definition of this property changes.
* The definition is considered to have changed if a call to getValue would return
* a different result for the same time.
* @memberof PolylineDashMaterialProperty.prototype
* @type {Event}
* @readonly
*/
definitionChanged : {
get : function() {
return this._definitionChanged;
}
},
/**
* Gets or sets the Property specifying the {@link Color} of the line.
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property}
*/
color : createPropertyDescriptor('color'),
/**
* Gets or sets the Property specifying the {@link Color} of the gaps in the line.
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property}
*/
gapColor : createPropertyDescriptor('gapColor'),
/**
* Gets or sets the numeric Property specifying the length of a dash cycle
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property}
*/
dashLength : createPropertyDescriptor('dashLength'),
/**
* Gets or sets the numeric Property specifying a dash pattern
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property}
*/
dashPattern : createPropertyDescriptor('dashPattern')
});
/**
* 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.
*/
PolylineDashMaterialProperty.prototype.getType = function(time) {
return 'PolylineDash';
};
/**
* 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.
*/
PolylineDashMaterialProperty.prototype.getValue = function(time, result) {
if (!defined(result)) {
result = {};
}
result.color = Property.getValueOrClonedDefault(this._color, time, defaultColor, result.color);
result.gapColor = Property.getValueOrClonedDefault(this._gapColor, time, defaultGapColor, result.gapColor);
result.dashLength = Property.getValueOrDefault(this._dashLength, time, defaultDashLength, result.dashLength);
result.dashPattern = Property.getValueOrDefault(this._dashPattern, time, defaultDashPattern, result.dashPattern);
return result;
};
/**
* 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.
*/
PolylineDashMaterialProperty.prototype.equals = function(other) {
return this === other || //
(other instanceof PolylineDashMaterialProperty &&
Property.equals(this._color, other._color) &&
Property.equals(this._gapColor, other._gapColor) &&
Property.equals(this._dashLength, other._dashLength) &&
Property.equals(this._dashPattern, other._dashPattern));
};
export default PolylineDashMaterialProperty;