import ComponentDatatype from "./ComponentDatatype.js";
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import defaultValue from "./defaultValue.js";
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import defined from "./defined.js";
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import DeveloperError from "./DeveloperError.js";
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/**
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* Value and type information for per-instance geometry attribute that determines if the geometry instance will be shown.
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*
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* @alias ShowGeometryInstanceAttribute
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* @constructor
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*
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* @param {Boolean} [show=true] Determines if the geometry instance will be shown.
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*
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*
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* @example
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* var instance = new Cesium.GeometryInstance({
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* geometry : new Cesium.BoxGeometry({
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* vertexFormat : Cesium.VertexFormat.POSITION_AND_NORMAL,
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* minimum : new Cesium.Cartesian3(-250000.0, -250000.0, -250000.0),
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* maximum : new Cesium.Cartesian3(250000.0, 250000.0, 250000.0)
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* }),
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* modelMatrix : Cesium.Matrix4.multiplyByTranslation(Cesium.Transforms.eastNorthUpToFixedFrame(
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* Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883)), new Cesium.Cartesian3(0.0, 0.0, 1000000.0), new Cesium.Matrix4()),
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* id : 'box',
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* attributes : {
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* show : new Cesium.ShowGeometryInstanceAttribute(false)
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* }
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* });
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*
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* @see GeometryInstance
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* @see GeometryInstanceAttribute
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*/
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function ShowGeometryInstanceAttribute(show) {
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show = defaultValue(show, true);
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/**
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* The values for the attributes stored in a typed array.
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*
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* @type Uint8Array
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*
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* @default [1.0]
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*/
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this.value = ShowGeometryInstanceAttribute.toValue(show);
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}
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Object.defineProperties(ShowGeometryInstanceAttribute.prototype, {
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/**
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* The datatype of each component in the attribute, e.g., individual elements in
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* {@link ColorGeometryInstanceAttribute#value}.
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*
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* @memberof ShowGeometryInstanceAttribute.prototype
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*
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* @type {ComponentDatatype}
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* @readonly
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*
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* @default {@link ComponentDatatype.UNSIGNED_BYTE}
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*/
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componentDatatype: {
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get: function () {
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return ComponentDatatype.UNSIGNED_BYTE;
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},
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},
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/**
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* The number of components in the attributes, i.e., {@link ColorGeometryInstanceAttribute#value}.
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*
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* @memberof ShowGeometryInstanceAttribute.prototype
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*
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* @type {Number}
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* @readonly
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*
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* @default 1
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*/
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componentsPerAttribute: {
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get: function () {
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return 1;
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},
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},
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/**
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* When <code>true</code> and <code>componentDatatype</code> is an integer format,
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* indicate that the components should be mapped to the range [0, 1] (unsigned)
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* or [-1, 1] (signed) when they are accessed as floating-point for rendering.
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*
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* @memberof ShowGeometryInstanceAttribute.prototype
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*
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* @type {Boolean}
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* @readonly
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*
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* @default true
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*/
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normalize: {
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get: function () {
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return false;
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},
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},
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});
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/**
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* Converts a boolean show to a typed array that can be used to assign a show attribute.
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*
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* @param {Boolean} show The show value.
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* @param {Uint8Array} [result] The array to store the result in, if undefined a new instance will be created.
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* @returns {Uint8Array} The modified result parameter or a new instance if result was undefined.
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*
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* @example
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* var attributes = primitive.getGeometryInstanceAttributes('an id');
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* attributes.show = Cesium.ShowGeometryInstanceAttribute.toValue(true, attributes.show);
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*/
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ShowGeometryInstanceAttribute.toValue = function (show, result) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(show)) {
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throw new DeveloperError("show is required.");
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}
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//>>includeEnd('debug');
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if (!defined(result)) {
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return new Uint8Array([show]);
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}
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result[0] = show;
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return result;
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};
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export default ShowGeometryInstanceAttribute;
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