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112 lines
2.0 KiB
JavaScript
112 lines
2.0 KiB
JavaScript
import Check from "../Core/Check.js";
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import CesiumMath from "../Core/Math.js";
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import Matrix3 from "../Core/Matrix3.js";
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import Matrix4 from "../Core/Matrix4.js";
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/**
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* An enum describing the x, y, and z axes and helper conversion functions.
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*
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* @enum {Number}
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*/
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var Axis = {
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/**
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* Denotes the x-axis.
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*
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* @type {Number}
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* @constant
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*/
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X: 0,
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/**
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* Denotes the y-axis.
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*
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* @type {Number}
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* @constant
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*/
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Y: 1,
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/**
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* Denotes the z-axis.
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*
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* @type {Number}
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* @constant
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*/
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Z: 2,
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};
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/**
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* Matrix used to convert from y-up to z-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.Y_UP_TO_Z_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationX(CesiumMath.PI_OVER_TWO)
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);
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/**
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* Matrix used to convert from z-up to y-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.Z_UP_TO_Y_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationX(-CesiumMath.PI_OVER_TWO)
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);
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/**
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* Matrix used to convert from x-up to z-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.X_UP_TO_Z_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationY(-CesiumMath.PI_OVER_TWO)
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);
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/**
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* Matrix used to convert from z-up to x-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.Z_UP_TO_X_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationY(CesiumMath.PI_OVER_TWO)
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);
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/**
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* Matrix used to convert from x-up to y-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.X_UP_TO_Y_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationZ(CesiumMath.PI_OVER_TWO)
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);
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/**
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* Matrix used to convert from y-up to x-up
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*
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* @type {Matrix4}
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* @constant
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*/
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Axis.Y_UP_TO_X_UP = Matrix4.fromRotationTranslation(
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Matrix3.fromRotationZ(-CesiumMath.PI_OVER_TWO)
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);
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/**
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* Gets the axis by name
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*
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* @param {String} name The name of the axis.
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* @returns {Number} The axis enum.
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*/
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Axis.fromName = function (name) {
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//>>includeStart('debug', pragmas.debug);
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Check.typeOf.string("name", name);
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//>>includeEnd('debug');
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return Axis[name];
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};
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export default Object.freeze(Axis);
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