111 lines
2.6 KiB
JavaScript
111 lines
2.6 KiB
JavaScript
define([
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'../Core/Check',
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'../Core/freezeObject',
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'../Core/Math',
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'../Core/Matrix3',
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'../Core/Matrix4'
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], function(
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Check,
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freezeObject,
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CesiumMath,
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Matrix3,
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Matrix4) {
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'use strict';
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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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* @exports Axis
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* @private
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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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* 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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Y_UP_TO_Z_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationX(CesiumMath.PI_OVER_TWO)),
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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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Z_UP_TO_Y_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationX(-CesiumMath.PI_OVER_TWO)),
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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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X_UP_TO_Z_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationY(-CesiumMath.PI_OVER_TWO)),
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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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Z_UP_TO_X_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationY(CesiumMath.PI_OVER_TWO)),
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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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X_UP_TO_Y_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationZ(CesiumMath.PI_OVER_TWO)),
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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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Y_UP_TO_X_UP : Matrix4.fromRotationTranslation(Matrix3.fromRotationZ(-CesiumMath.PI_OVER_TWO)),
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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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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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};
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return freezeObject(Axis);
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});
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