gltf-pipeline/lib/numberOfComponentsForType.js

Content pipeline tools for optimizing glTF assets.

'use strict';

module.exports = numberOfComponentsForType;

/**
 * Utility function for retrieving the number of components in a given type.
 *
 * @param {String} type glTF type
 * @returns {Number} The number of components in that type.
 *
 * @private
 */
function numberOfComponentsForType(type) {
    switch (type) {
        case 'SCALAR':
            return 1;
        case 'VEC2':
            return 2;
        case 'VEC3':
            return 3;
        case 'VEC4':
        case 'MAT2':
            return 4;
        case 'MAT3':
            return 9;
        case 'MAT4':
            return 16;
    }
}