(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.TGALoader = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _three) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.TGALoader = 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 TGALoader = /*#__PURE__*/function (_DataTextureLoader) {
    _inherits(TGALoader, _DataTextureLoader);

    var _super = _createSuper(TGALoader);

    function TGALoader(manager) {
      _classCallCheck(this, TGALoader);

      return _super.call(this, manager);
    }

    _createClass(TGALoader, [{
      key: "parse",
      value: function parse(buffer) {
        // reference from vthibault, https://github.com/vthibault/roBrowser/blob/master/src/Loaders/Targa.js
        function tgaCheckHeader(header) {
          switch (header.image_type) {
            // check indexed type
            case TGA_TYPE_INDEXED:
            case TGA_TYPE_RLE_INDEXED:
              if (header.colormap_length > 256 || header.colormap_size !== 24 || header.colormap_type !== 1) {
                console.error('THREE.TGALoader: Invalid type colormap data for indexed type.');
              }

              break;
            // check colormap type

            case TGA_TYPE_RGB:
            case TGA_TYPE_GREY:
            case TGA_TYPE_RLE_RGB:
            case TGA_TYPE_RLE_GREY:
              if (header.colormap_type) {
                console.error('THREE.TGALoader: Invalid type colormap data for colormap type.');
              }

              break;
            // What the need of a file without data ?

            case TGA_TYPE_NO_DATA:
              console.error('THREE.TGALoader: No data.');
            // Invalid type ?

            default:
              console.error('THREE.TGALoader: Invalid type "%s".', header.image_type);
          } // check image width and height


          if (header.width <= 0 || header.height <= 0) {
            console.error('THREE.TGALoader: Invalid image size.');
          } // check image pixel size


          if (header.pixel_size !== 8 && header.pixel_size !== 16 && header.pixel_size !== 24 && header.pixel_size !== 32) {
            console.error('THREE.TGALoader: Invalid pixel size "%s".', header.pixel_size);
          }
        } // parse tga image buffer


        function tgaParse(use_rle, use_pal, header, offset, data) {
          var pixel_data, palettes;
          var pixel_size = header.pixel_size >> 3;
          var pixel_total = header.width * header.height * pixel_size; // read palettes

          if (use_pal) {
            palettes = data.subarray(offset, offset += header.colormap_length * (header.colormap_size >> 3));
          } // read RLE


          if (use_rle) {
            pixel_data = new Uint8Array(pixel_total);
            var c, count, i;
            var shift = 0;
            var pixels = new Uint8Array(pixel_size);

            while (shift < pixel_total) {
              c = data[offset++];
              count = (c & 0x7f) + 1; // RLE pixels

              if (c & 0x80) {
                // bind pixel tmp array
                for (i = 0; i < pixel_size; ++i) {
                  pixels[i] = data[offset++];
                } // copy pixel array


                for (i = 0; i < count; ++i) {
                  pixel_data.set(pixels, shift + i * pixel_size);
                }

                shift += pixel_size * count;
              } else {
                // raw pixels
                count *= pixel_size;

                for (i = 0; i < count; ++i) {
                  pixel_data[shift + i] = data[offset++];
                }

                shift += count;
              }
            }
          } else {
            // raw pixels
            pixel_data = data.subarray(offset, offset += use_pal ? header.width * header.height : pixel_total);
          }

          return {
            pixel_data: pixel_data,
            palettes: palettes
          };
        }

        function tgaGetImageData8bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image, palettes) {
          var colormap = palettes;
          var color,
              i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i++) {
              color = image[i];
              imageData[(x + width * y) * 4 + 3] = 255;
              imageData[(x + width * y) * 4 + 2] = colormap[color * 3 + 0];
              imageData[(x + width * y) * 4 + 1] = colormap[color * 3 + 1];
              imageData[(x + width * y) * 4 + 0] = colormap[color * 3 + 2];
            }
          }

          return imageData;
        }

        function tgaGetImageData16bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image) {
          var color,
              i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i += 2) {
              color = image[i + 0] + (image[i + 1] << 8);
              imageData[(x + width * y) * 4 + 0] = (color & 0x7C00) >> 7;
              imageData[(x + width * y) * 4 + 1] = (color & 0x03E0) >> 2;
              imageData[(x + width * y) * 4 + 2] = (color & 0x001F) << 3;
              imageData[(x + width * y) * 4 + 3] = color & 0x8000 ? 0 : 255;
            }
          }

          return imageData;
        }

        function tgaGetImageData24bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image) {
          var i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i += 3) {
              imageData[(x + width * y) * 4 + 3] = 255;
              imageData[(x + width * y) * 4 + 2] = image[i + 0];
              imageData[(x + width * y) * 4 + 1] = image[i + 1];
              imageData[(x + width * y) * 4 + 0] = image[i + 2];
            }
          }

          return imageData;
        }

        function tgaGetImageData32bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image) {
          var i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i += 4) {
              imageData[(x + width * y) * 4 + 2] = image[i + 0];
              imageData[(x + width * y) * 4 + 1] = image[i + 1];
              imageData[(x + width * y) * 4 + 0] = image[i + 2];
              imageData[(x + width * y) * 4 + 3] = image[i + 3];
            }
          }

          return imageData;
        }

        function tgaGetImageDataGrey8bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image) {
          var color,
              i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i++) {
              color = image[i];
              imageData[(x + width * y) * 4 + 0] = color;
              imageData[(x + width * y) * 4 + 1] = color;
              imageData[(x + width * y) * 4 + 2] = color;
              imageData[(x + width * y) * 4 + 3] = 255;
            }
          }

          return imageData;
        }

        function tgaGetImageDataGrey16bits(imageData, y_start, y_step, y_end, x_start, x_step, x_end, image) {
          var i = 0,
              x,
              y;
          var width = header.width;

          for (y = y_start; y !== y_end; y += y_step) {
            for (x = x_start; x !== x_end; x += x_step, i += 2) {
              imageData[(x + width * y) * 4 + 0] = image[i + 0];
              imageData[(x + width * y) * 4 + 1] = image[i + 0];
              imageData[(x + width * y) * 4 + 2] = image[i + 0];
              imageData[(x + width * y) * 4 + 3] = image[i + 1];
            }
          }

          return imageData;
        }

        function getTgaRGBA(data, width, height, image, palette) {
          var x_start, y_start, x_step, y_step, x_end, y_end;

          switch ((header.flags & TGA_ORIGIN_MASK) >> TGA_ORIGIN_SHIFT) {
            default:
            case TGA_ORIGIN_UL:
              x_start = 0;
              x_step = 1;
              x_end = width;
              y_start = 0;
              y_step = 1;
              y_end = height;
              break;

            case TGA_ORIGIN_BL:
              x_start = 0;
              x_step = 1;
              x_end = width;
              y_start = height - 1;
              y_step = -1;
              y_end = -1;
              break;

            case TGA_ORIGIN_UR:
              x_start = width - 1;
              x_step = -1;
              x_end = -1;
              y_start = 0;
              y_step = 1;
              y_end = height;
              break;

            case TGA_ORIGIN_BR:
              x_start = width - 1;
              x_step = -1;
              x_end = -1;
              y_start = height - 1;
              y_step = -1;
              y_end = -1;
              break;
          }

          if (use_grey) {
            switch (header.pixel_size) {
              case 8:
                tgaGetImageDataGrey8bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image);
                break;

              case 16:
                tgaGetImageDataGrey16bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image);
                break;

              default:
                console.error('THREE.TGALoader: Format not supported.');
                break;
            }
          } else {
            switch (header.pixel_size) {
              case 8:
                tgaGetImageData8bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image, palette);
                break;

              case 16:
                tgaGetImageData16bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image);
                break;

              case 24:
                tgaGetImageData24bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image);
                break;

              case 32:
                tgaGetImageData32bits(data, y_start, y_step, y_end, x_start, x_step, x_end, image);
                break;

              default:
                console.error('THREE.TGALoader: Format not supported.');
                break;
            }
          } // Load image data according to specific method
          // let func = 'tgaGetImageData' + (use_grey ? 'Grey' : '') + (header.pixel_size) + 'bits';
          // func(data, y_start, y_step, y_end, x_start, x_step, x_end, width, image, palette );


          return data;
        } // TGA constants


        var TGA_TYPE_NO_DATA = 0,
            TGA_TYPE_INDEXED = 1,
            TGA_TYPE_RGB = 2,
            TGA_TYPE_GREY = 3,
            TGA_TYPE_RLE_INDEXED = 9,
            TGA_TYPE_RLE_RGB = 10,
            TGA_TYPE_RLE_GREY = 11,
            TGA_ORIGIN_MASK = 0x30,
            TGA_ORIGIN_SHIFT = 0x04,
            TGA_ORIGIN_BL = 0x00,
            TGA_ORIGIN_BR = 0x01,
            TGA_ORIGIN_UL = 0x02,
            TGA_ORIGIN_UR = 0x03;
        if (buffer.length < 19) console.error('THREE.TGALoader: Not enough data to contain header.');
        var offset = 0;
        var content = new Uint8Array(buffer),
            header = {
          id_length: content[offset++],
          colormap_type: content[offset++],
          image_type: content[offset++],
          colormap_index: content[offset++] | content[offset++] << 8,
          colormap_length: content[offset++] | content[offset++] << 8,
          colormap_size: content[offset++],
          origin: [content[offset++] | content[offset++] << 8, content[offset++] | content[offset++] << 8],
          width: content[offset++] | content[offset++] << 8,
          height: content[offset++] | content[offset++] << 8,
          pixel_size: content[offset++],
          flags: content[offset++]
        }; // check tga if it is valid format

        tgaCheckHeader(header);

        if (header.id_length + offset > buffer.length) {
          console.error('THREE.TGALoader: No data.');
        } // skip the needn't data


        offset += header.id_length; // get targa information about RLE compression and palette

        var use_rle = false,
            use_pal = false,
            use_grey = false;

        switch (header.image_type) {
          case TGA_TYPE_RLE_INDEXED:
            use_rle = true;
            use_pal = true;
            break;

          case TGA_TYPE_INDEXED:
            use_pal = true;
            break;

          case TGA_TYPE_RLE_RGB:
            use_rle = true;
            break;

          case TGA_TYPE_RGB:
            break;

          case TGA_TYPE_RLE_GREY:
            use_rle = true;
            use_grey = true;
            break;

          case TGA_TYPE_GREY:
            use_grey = true;
            break;
        } //


        var imageData = new Uint8Array(header.width * header.height * 4);
        var result = tgaParse(use_rle, use_pal, header, offset, content);
        getTgaRGBA(imageData, header.width, header.height, result.pixel_data, result.palettes);
        return {
          data: imageData,
          width: header.width,
          height: header.height,
          flipY: true,
          generateMipmaps: true,
          minFilter: _three.LinearMipmapLinearFilter
        };
      }
    }]);

    return TGALoader;
  }(_three.DataTextureLoader);

  _exports.TGALoader = TGALoader;
});