(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "three"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("three"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.three);
    global.LUTCubeLoader = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _three) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.LUTCubeLoader = void 0;

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } Object.defineProperty(subClass, "prototype", { value: Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }), writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }

  function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

  function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

  function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

  function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

  var LUTCubeLoader = /*#__PURE__*/function (_Loader) {
    _inherits(LUTCubeLoader, _Loader);

    var _super = _createSuper(LUTCubeLoader);

    function LUTCubeLoader() {
      _classCallCheck(this, LUTCubeLoader);

      return _super.apply(this, arguments);
    }

    _createClass(LUTCubeLoader, [{
      key: "load",
      value: function load(url, onLoad, onProgress, onError) {
        var _this = this;

        var loader = new _three.FileLoader(this.manager);
        loader.setPath(this.path);
        loader.setResponseType('text');
        loader.load(url, function (text) {
          try {
            onLoad(_this.parse(text));
          } catch (e) {
            if (onError) {
              onError(e);
            } else {
              console.error(e);
            }

            _this.manager.itemError(url);
          }
        }, onProgress, onError);
      }
    }, {
      key: "parse",
      value: function parse(str) {
        // Remove empty lines and comments
        str = str.replace(/^#.*?(\n|\r)/gm, '').replace(/^\s*?(\n|\r)/gm, '').trim();
        var title = null;
        var size = null;
        var domainMin = new _three.Vector3(0, 0, 0);
        var domainMax = new _three.Vector3(1, 1, 1);
        var lines = str.split(/[\n\r]+/g);
        var data = null;
        var currIndex = 0;

        for (var i = 0, l = lines.length; i < l; i++) {
          var line = lines[i].trim();
          var split = line.split(/\s/g);

          switch (split[0]) {
            case 'TITLE':
              title = line.substring(7, line.length - 1);
              break;

            case 'LUT_3D_SIZE':
              // TODO: A .CUBE LUT file specifies floating point values and could be represented with
              // more precision than can be captured with Uint8Array.
              var sizeToken = split[1];
              size = parseFloat(sizeToken);
              data = new Uint8Array(size * size * size * 3);
              break;

            case 'DOMAIN_MIN':
              domainMin.x = parseFloat(split[1]);
              domainMin.y = parseFloat(split[2]);
              domainMin.z = parseFloat(split[3]);
              break;

            case 'DOMAIN_MAX':
              domainMax.x = parseFloat(split[1]);
              domainMax.y = parseFloat(split[2]);
              domainMax.z = parseFloat(split[3]);
              break;

            default:
              var r = parseFloat(split[0]);
              var g = parseFloat(split[1]);
              var b = parseFloat(split[2]);

              if (r > 1.0 || r < 0.0 || g > 1.0 || g < 0.0 || b > 1.0 || b < 0.0) {
                throw new Error('LUTCubeLoader : Non normalized values not supported.');
              }

              data[currIndex + 0] = r * 255;
              data[currIndex + 1] = g * 255;
              data[currIndex + 2] = b * 255;
              currIndex += 3;
          }
        }

        var texture = new _three.DataTexture();
        texture.image.data = data;
        texture.image.width = size;
        texture.image.height = size * size;
        texture.format = _three.RGBFormat;
        texture.type = _three.UnsignedByteType;
        texture.magFilter = _three.LinearFilter;
        texture.minFilter = _three.LinearFilter;
        texture.wrapS = _three.ClampToEdgeWrapping;
        texture.wrapT = _three.ClampToEdgeWrapping;
        texture.generateMipmaps = false;
        var texture3D = new _three.DataTexture3D();
        texture3D.image.data = data;
        texture3D.image.width = size;
        texture3D.image.height = size;
        texture3D.image.depth = size;
        texture3D.format = _three.RGBFormat;
        texture3D.type = _three.UnsignedByteType;
        texture3D.magFilter = _three.LinearFilter;
        texture3D.minFilter = _three.LinearFilter;
        texture3D.wrapS = _three.ClampToEdgeWrapping;
        texture3D.wrapT = _three.ClampToEdgeWrapping;
        texture3D.wrapR = _three.ClampToEdgeWrapping;
        texture3D.generateMipmaps = false;
        return {
          title: title,
          size: size,
          domainMin: domainMin,
          domainMax: domainMax,
          texture: texture,
          texture3D: texture3D
        };
      }
    }]);

    return LUTCubeLoader;
  }(_three.Loader);

  _exports.LUTCubeLoader = LUTCubeLoader;
});