Function parseUVIndex

packages/melonjs/src/loader/parsers/obj.js:106–111

* parse a face vertex component (e.g. "1/2/3" or "1//3" or "1") * and return the UV index, or NO_UV if not present * @param {string} part - face vertex string * @returns {number} UV index (0-based) or NO_UV * @ignore

(part, slashIdx)

	 * @ignore
	 */
	function parseUVIndex(part, slashIdx) {
		if (slashIdx !== -1 && part[slashIdx + 1] !== SLASH_CHAR) {
			return parseInt(part.substring(slashIdx + 1), 10) - OBJ_INDEX_OFFSET;
		}
		return NO_UV;
	}

	// mtllib reference (if present)
	let mtllib = null;