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( 'LUTCubeLoader: Missing LUT_3D_SIZE information' );

		}

		const size = Number( result[ 1 ] );
		const length = size ** 3 * 4;
		const data = this.type === UnsignedByteType ? new Uint8Array( length ) : new Float32Array( length );

		const domainMin = new Vector3( 0, 0, 0 );
		const domainMax = new Vector3( 1, 1, 1 );

		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 ) {

			throw new Error( 'LUTCubeLoader: Invalid input domain' );

		}

		const scale = this.type === UnsignedByteType ? 255 : 1;
		let i = 0;

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

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

		}

		const texture3D = new Data3DTexture();
		texture3D.image.data = data;
		texture3D.image.width = size;
		texture3D.image.height = size;
		texture3D.image.depth = size;
		texture3D.type = this.type;
		texture3D.magFilter = LinearFilter;
		texture3D.minFilter = LinearFilter;
		texture3D.wrapS = ClampToEdgeWrapping;
		texture3D.wrapT = ClampToEdgeWrapping;
		texture3D.wrapR = ClampToEdgeWrapping;
		texture3D.generateMipmaps = false;
		texture3D.needsUpdate = true;

		return {
			title,
			size,
			domainMin,
			domainMax,
			texture3D,
		};

	}
Parses the given Cube LUT data and returns the resulting 3D data texture.

@param {string} input - The raw Cube LUT data as a string.
@return {{title:string,size:number,domainMin:Vector3,domainMax:Vector3,texture3D:Data3DTexture}} The parsed Cube LUT.