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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | 1x 1x 1x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x 1x 2x 38x 1x 2x 1x 1x 5x 1x 5x 3x 5x 5x 5x 5x 1x 12x | import Color from "../Core/Color.js";
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 defaultGlowPower = 0.25;
const defaultTaperPower = 1.0;
/**
* A {@link MaterialProperty} that maps to polyline glow {@link Material} uniforms.
* @alias PolylineGlowMaterialProperty
* @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|number} [options.glowPower=0.25] A numeric Property specifying the strength of the glow, as a percentage of the total line width.
* @param {Property|number} [options.taperPower=1.0] A numeric Property specifying the strength of the tapering effect, as a percentage of the total line length. If 1.0 or higher, no taper effect is used.
*/
function PolylineGlowMaterialProperty(options) {
options = options ?? Frozen.EMPTY_OBJECT;
this._definitionChanged = new Event();
this._color = undefined;
this._colorSubscription = undefined;
this._glowPower = undefined;
this._glowPowerSubscription = undefined;
this._taperPower = undefined;
this._taperPowerSubscription = undefined;
this.color = options.color;
this.glowPower = options.glowPower;
this.taperPower = options.taperPower;
}
Object.defineProperties(PolylineGlowMaterialProperty.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 PolylineGlowMaterialProperty.prototype
* @type {boolean}
* @readonly
*/
isConstant: {
get: function () {
return (
Property.isConstant(this._color) && Property.isConstant(this._glow)
);
},
},
/**
* 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 PolylineGlowMaterialProperty.prototype
* @type {Event}
* @readonly
*/
definitionChanged: {
get: function () {
return this._definitionChanged;
},
},
/**
* Gets or sets the Property specifying the {@link Color} of the line.
* @memberof PolylineGlowMaterialProperty.prototype
* @type {Property|undefined}
*/
color: createPropertyDescriptor("color"),
/**
* Gets or sets the numeric Property specifying the strength of the glow, as a percentage of the total line width (less than 1.0).
* @memberof PolylineGlowMaterialProperty.prototype
* @type {Property|undefined}
*/
glowPower: createPropertyDescriptor("glowPower"),
/**
* Gets or sets the numeric Property specifying the strength of the tapering effect, as a percentage of the total line length. If 1.0 or higher, no taper effect is used.
* @memberof PolylineGlowMaterialProperty.prototype
* @type {Property|undefined}
*/
taperPower: createPropertyDescriptor("taperPower"),
});
/**
* 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.
*/
PolylineGlowMaterialProperty.prototype.getType = function (time) {
return "PolylineGlow";
};
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.
*/
PolylineGlowMaterialProperty.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.glowPower = Property.getValueOrDefault(
this._glowPower,
time,
defaultGlowPower,
result.glowPower,
);
result.taperPower = Property.getValueOrDefault(
this._taperPower,
time,
defaultTaperPower,
result.taperPower,
);
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.
*/
PolylineGlowMaterialProperty.prototype.equals = function (other) {
return (
this === other ||
(other instanceof PolylineGlowMaterialProperty &&
Property.equals(this._color, other._color) &&
Property.equals(this._glowPower, other._glowPower) &&
Property.equals(this._taperPower, other._taperPower))
);
};
export default PolylineGlowMaterialProperty;
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