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Packing.js

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import { nodeObject } from '../tsl/TSLBase.js';

/** @module Packing **/

/**
 * Packs a direction vector into a color value.
 *
 * @method
 * @param {Node<vec3>} node - The direction to pack.
 * @return {Node<vec3>} The color.
 */
export const directionToColor = ( node ) => nodeObject( node ).mul( 0.5 ).add( 0.5 );

/**
 * Unpacks a color value into a direction vector.
 *
 * @method
 * @param {Node<vec3>} node - The color to unpack.
 * @return {Node<vec3>} The direction.
 */
export const colorToDirection = ( node ) => nodeObject( node ).mul( 2.0 ).sub( 1 );