text: /* eslint-disable */
  import THREE from 'three'
  
  /**
   * Loads a Wavefront .mtl file specifying materials
   *
   * @author angelxuanchang
   */
  
  export default function MTLLoader( manager ) {
  
    this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
  
  };
  
  MTLLoader.prototype = {
  
    constructor: MTLLoader,
  
    load: function ( url, onLoad, onProgress, onError ) {
  
      var scope = this;
  
      var loader = new THREE.XHRLoader( this.manager );
      loader.setPath( this.path );
      loader.load( url, function ( text ) {
  
        onLoad( scope.parse( text ) );
  
      }, onProgress, onError );
  
    },
  
    setPath: function ( value ) {
  
      this.path = value;
  
    },
  
    setBaseUrl: function( value ) {
  
      // TODO: Merge with setPath()? Or rename to setTexturePath?
  
      this.baseUrl = value;
  
    },
  
    setCrossOrigin: function ( value ) {
  
      this.crossOrigin = value;
  
    },
  
    setMaterialOptions: function ( value ) {
  
      this.materialOptions = value;
  
    },
  
    /**
     * Parses loaded MTL file
     * @param text - Content of MTL file
     * @return {THREE.MTLLoader.MaterialCreator}
     */
    parse: function ( text ) {
  
      var lines = text.split( "\n" );
      var info = {};
      var delimiter_pattern = /\s+/;
      var materialsInfo = {};
  
      for ( var i = 0; i < lines.length; i ++ ) {
  
        var line = lines[ i ];
        line = line.trim();
  
        if ( line.length === 0 || line.charAt( 0 ) === '#' ) {
  
          // Blank line or comment ignore
          continue;
  
        }
  
        var pos = line.indexOf( ' ' );
  
        var key = ( pos >= 0 ) ? line.substring( 0, pos ) : line;
        key = key.toLowerCase();
  
        var value = ( pos >= 0 ) ? line.substring( pos + 1 ) : "";
        value = value.trim();
  
        if ( key === "newmtl" ) {
  
          // New material
  
          info = { name: value };
          materialsInfo[ value ] = info;
  
        } else if ( info ) {
  
          if ( key === "ka" || key === "kd" || key === "ks" ) {
  
            var ss = value.split( delimiter_pattern, 3 );
            info[ key ] = [ parseFloat( ss[ 0 ] ), parseFloat( ss[ 1 ] ), parseFloat( ss[ 2 ] ) ];
  
          } else {
  
            info[ key ] = value;
  
          }
  
        }
  
      }
  
      var materialCreator = new MTLLoader.MaterialCreator( this.baseUrl, this.materialOptions );
      materialCreator.setCrossOrigin( this.crossOrigin );
      materialCreator.setManager( this.manager );
      materialCreator.setMaterials( materialsInfo );
      return materialCreator;
  
    }
  
  };
  
  /**
   * Create a new THREE-MTLLoader.MaterialCreator
   * @param baseUrl - Url relative to which textures are loaded
   * @param options - Set of options on how to construct the materials
   *                  side: Which side to apply the material
   *                        THREE.FrontSide (default), THREE.BackSide, THREE.DoubleSide
   *                  wrap: What type of wrapping to apply for textures
   *                        THREE.RepeatWrapping (default), THREE.ClampToEdgeWrapping, THREE.MirroredRepeatWrapping
   *                  normalizeRGB: RGBs need to be normalized to 0-1 from 0-255
   *                                Default: false, assumed to be already normalized
   *                  ignoreZeroRGBs: Ignore values of RGBs (Ka,Kd,Ks) that are all 0's
   *                                  Default: false
   * @constructor
   */
  
  MTLLoader.MaterialCreator = function( baseUrl, options ) {
  
    this.baseUrl = baseUrl;
    this.options = options;
    this.materialsInfo = {};
    this.materials = {};
    this.materialsArray = [];
    this.nameLookup = {};
  
    this.side = ( this.options && this.options.side ) ? this.options.side : THREE.FrontSide;
    this.wrap = ( this.options && this.options.wrap ) ? this.options.wrap : THREE.RepeatWrapping;
  
  };
  
  MTLLoader.MaterialCreator.prototype = {
  
    constructor: MTLLoader.MaterialCreator,
  
    setCrossOrigin: function ( value ) {
  
      this.crossOrigin = value;
  
    },
  
    setManager: function ( value ) {
  
      this.manager = value;
  
    },
  
    setMaterials: function( materialsInfo ) {
  
      this.materialsInfo = this.convert( materialsInfo );
      this.materials = {};
      this.materialsArray = [];
      this.nameLookup = {};
  
    },
  
    convert: function( materialsInfo ) {
  
      if ( ! this.options ) return materialsInfo;
  
      var converted = {};
  
      for ( var mn in materialsInfo ) {
  
        // Convert materials info into normalized form based on options
  
        var mat = materialsInfo[ mn ];
  
        var covmat = {};
  
        converted[ mn ] = covmat;
  
        for ( var prop in mat ) {
  
          var save = true;
          var value = mat[ prop ];
          var lprop = prop.toLowerCase();
  
          switch ( lprop ) {
  
            case 'kd':
            case 'ka':
            case 'ks':
  
              // Diffuse color (color under white light) using RGB values
  
              if ( this.options && this.options.normalizeRGB ) {
  
                value = [ value[ 0 ] / 255, value[ 1 ] / 255, value[ 2 ] / 255 ];
  
              }
  
              if ( this.options && this.options.ignoreZeroRGBs ) {
  
                if ( value[ 0 ] === 0 && value[ 1 ] === 0 && value[ 1 ] === 0 ) {
  
                  // ignore
  
                  save = false;
  
                }
  
              }
  
              break;
  
            default:
  
              break;
          }
  
          if ( save ) {
  
            covmat[ lprop ] = value;
  
          }
  
        }
  
      }
  
      return converted;
  
    },
  
    preload: function () {
  
      for ( var mn in this.materialsInfo ) {
  
        this.create( mn );
  
      }
  
    },
  
    getIndex: function( materialName ) {
  
      return this.nameLookup[ materialName ];
  
    },
  
    getAsArray: function() {
  
      var index = 0;
  
      for ( var mn in this.materialsInfo ) {
  
        this.materialsArray[ index ] = this.create( mn );
        this.nameLookup[ mn ] = index;
        index ++;
  
      }
  
      return this.materialsArray;
  
    },
  
    create: function ( materialName ) {
  
      if ( this.materials[ materialName ] === undefined ) {
  
        this.createMaterial_( materialName );
  
      }
  
      return this.materials[ materialName ];
  
    },
  
    createMaterial_: function ( materialName ) {
  
      // Create material
  
      var mat = this.materialsInfo[ materialName ];
      var params = {
  
        name: materialName,
        side: this.side
  
      };
  
      for ( var prop in mat ) {
  
        var value = mat[ prop ];
  
        if ( value === '' ) continue;
  
        switch ( prop.toLowerCase() ) {
  
          // Ns is material specular exponent
  
          case 'kd':
  
            // Diffuse color (color under white light) using RGB values
  
            params[ 'color' ] = new THREE.Color().fromArray( value );
  
            break;
  
          case 'ks':
  
            // Specular color (color when light is reflected from shiny surface) using RGB values
            params[ 'specular' ] = new THREE.Color().fromArray( value );
  
            break;
  
          case 'map_kd':
  
            // Diffuse texture map
  
            params[ 'map' ] = this.loadTexture( this.baseUrl + value );
            params[ 'map' ].wrapS = this.wrap;
            params[ 'map' ].wrapT = this.wrap;
  
            break;
  
          case 'ns':
  
            // The specular exponent (defines the focus of the specular highlight)
            // A high exponent results in a tight, concentrated highlight. Ns values normally range from 0 to 1000.
  
            params[ 'shininess' ] = parseFloat( value );
  
            break;
  
          case 'd':
  
            if ( value < 1 ) {
  
              params[ 'opacity' ] = value;
              params[ 'transparent' ] = true;
  
            }
  
            break;
  
          case 'Tr':
  
            if ( value > 0 ) {
  
              params[ 'opacity' ] = 1 - value;
              params[ 'transparent' ] = true;
  
            }
  
            break;
  
          case 'map_bump':
          case 'bump':
  
            // Bump texture map
  
            if ( params[ 'bumpMap' ] ) break; // Avoid loading twice.
  
            params[ 'bumpMap' ] = this.loadTexture( this.baseUrl + value );
            params[ 'bumpMap' ].wrapS = this.wrap;
            params[ 'bumpMap' ].wrapT = this.wrap;
  
            break;
  
          default:
            break;
  
        }
  
      }
  
      this.materials[ materialName ] = new THREE.MeshPhongMaterial( params );
      return this.materials[ materialName ];
  
    },
  
  
    loadTexture: function ( url, mapping, onLoad, onProgress, onError ) {
  
      var texture;
      var loader = THREE.Loader.Handlers.get( url );
      var manager = ( this.manager !== undefined ) ? this.manager : THREE.DefaultLoadingManager;
  
      if ( loader === null ) {
  
        loader = new THREE.TextureLoader( manager );
  
      }
  
      if ( loader.setCrossOrigin ) loader.setCrossOrigin( this.crossOrigin );
      texture = loader.load( url, onLoad, onProgress, onError );
  
      if ( mapping !== undefined ) texture.mapping = mapping;
  
      return texture;
  
    }
  
  };
  
  THREE.EventDispatcher.prototype.apply( MTLLoader.prototype );
  