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import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import Event from "../Core/Event.js";
import JulianDate from "../Core/JulianDate.js";
import createPropertyDescriptor from "./createPropertyDescriptor.js";
import Property from "./Property.js";
const defaultColor = Color.WHITE;
const defaultGapColor = Color.TRANSPARENT;
const defaultDashLength = 16.0;
const 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|Color} [options.color=Color.WHITE] A Property specifying the {@link Color} of the line.
* @param {Property|Color} [options.gapColor=Color.TRANSPARENT] A Property specifying the {@link Color} of the gaps in the line.
* @param {Property|number} [options.dashLength=16.0] A numeric Property specifying the length of the dash pattern in pixels.
* @param {Property|number} [options.dashPattern=255.0] A numeric Property specifying a 16 bit pattern for the dash
*/
function PolylineDashMaterialProperty(options) {
options = options ?? Frozen.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;
}
Object.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|undefined}
*/
color: createPropertyDescriptor("color"),
/**
* Gets or sets the Property specifying the {@link Color} of the gaps in the line.
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property|undefined}
*/
gapColor: createPropertyDescriptor("gapColor"),
/**
* Gets or sets the numeric Property specifying the length of a dash cycle
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property|undefined}
*/
dashLength: createPropertyDescriptor("dashLength"),
/**
* Gets or sets the numeric Property specifying a dash pattern
* @memberof PolylineDashMaterialProperty.prototype
* @type {Property|undefined}
*/
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";
};
const timeScratch = new JulianDate();
/**
* Gets the value of the property at the provided time.
*
* @param {JulianDate} [time=JulianDate.now()] The time for which to retrieve the value. If omitted, the current system time is used.
* @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(time)) {
time = JulianDate.now(timeScratch);
}
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;
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