/** * Represents the position relative to the terrain. * * @enum {Number} */ var HeightReference = { /** * The position is absolute. * @type {Number} * @constant */ NONE: 0, /** * The position is clamped to the terrain. * @type {Number} * @constant */ CLAMP_TO_GROUND: 1, /** * The position height is the height above the terrain. * @type {Number} * @constant */ RELATIVE_TO_GROUND: 2, }; export default Object.freeze(HeightReference);