Method parse

src/loaders/LUTCubeLoader.js:91–164

* Parses the given data. * * @param {String} input - The LUT data. * @return {LookupTexture} The lookup texture. * @throws {Error} Fails if the data is invalid.

(input)

	 */

	parse(input) {

		const regExpTitle = /TITLE +"([^"]*)"/;
		const regExpSize = /LUT_3D_SIZE +(\d+)/;
		const regExpDomainMin = /DOMAIN_MIN +([\d.]+) +([\d.]+) +([\d.]+)/;
		const regExpDomainMax = /DOMAIN_MAX +([\d.]+) +([\d.]+) +([\d.]+)/;
		const regExpDataPoints = /^([\d.e+-]+) +([\d.e+-]+) +([\d.e+-]+) *$/gm;

		let result = regExpTitle.exec(input);
		const title = (result !== null) ? result[1] : null;

		result = regExpSize.exec(input);

		if(result === null) {

			throw new Error("Missing LUT_3D_SIZE information");

		}

		const size = Number(result[1]);
		const data = new Float32Array(size ** 3 * 4);

		const domainMin = new Vector3(0.0, 0.0, 0.0);
		const domainMax = new Vector3(1.0, 1.0, 1.0);

		result = regExpDomainMin.exec(input);

		if(result !== null) {

			domainMin.set(Number(result[1]), Number(result[2]), Number(result[3]));

		}

		result = regExpDomainMax.exec(input);

		if(result !== null) {

			domainMax.set(Number(result[1]), Number(result[2]), Number(result[3]));

		}

		if(domainMin.x > domainMax.x || domainMin.y > domainMax.y || domainMin.z > domainMax.z) {

			domainMin.set(0.0, 0.0, 0.0);
			domainMax.set(1.0, 1.0, 1.0);

			throw new Error("Invalid input domain");

		}

		let i = 0;

		while((result = regExpDataPoints.exec(input)) !== null) {

			data[i++] = Number(result[1]);
			data[i++] = Number(result[2]);
			data[i++] = Number(result[3]);
			data[i++] = 1.0;