// 异步加载

const LoadObj = async (key?: string) => {

      LoadState.value = true

      var objStr, mtlStr

      var imgStrObj = {}

      let len = 0

      const zp: any = (await getoBJList({ key })).data

      JSZip.loadAsync(zp).then(function (zip) {

        zip.forEach((relativePath: string, file: JSZip.JSZipObject) => {

          try {

            len++

            let blobs = false

            if (file.name.indexOf('.obj') > 0 || file.name.indexOf('.mtl') > 0)

              blobs = true

            zip

              .file(file.name)

              .async(blobs ? 'text' : 'base64')

              .then(

                function success(text) {

                  len--

                  if (file.name.indexOf('.obj') > 0) objStr = text

                  else if (file.name.indexOf('.mtl') > 0) mtlStr = text

                  else

                    ht.Default.setImage(

                      file.name,

                      (imgStrObj[file.name] = 'data:image/png;base64,' + text)

                    )

                  if (len <= 0) {

                    try {

                      dataModel.clear()

                      var rawS3 = parseObj('2121', objStr, mtlStr, imgStrObj)

                      var node = new ht.Node()

                      node.s({

                        shape3d: '2121',

                        '3d.selectable': false

                      })

                      node.s3(rawS3)

                      node.p3(0, rawS3[1] / 2, 0)

                      dataModel.add(node)

                      var sz = node.getSize3d()

                      var sa = node.getScale3d()

                      graphView.setNear(

                        Math.floor(

                          Math.min(sz[0] * sa[0], sz[1] * sa[1], sz[2] * sa[2])

                        )

                      )

                      graphView.setFar(

                        Math.floor(

                          Math.max(sz[0] * sa[0], sz[1] * sa[1], sz[2] * sa[2])

                        ) * 10

                      )

                      graphView.flyTo(node, true)

                      LoadState.value = true

                    } catch {

                      ElMessage.error(i18n.global.t('message.Objerr'))

                      LoadState.value = false

                    }

                  }

                },

                function error(e) {

                  len--

                  console.log(e)

                }

              )

          } catch {

            ElMessage.error(i18n.global.t('message.Objerr'))

            LoadState.value = false

          }

        })

      })

    }

import { DownGet } from '/@/type/config/down'

const api = {

    getoBJList: '/admin/down/obj', // 获取模型

}

// 下载模型文件

export function getoBJList(param: DownGet): Promise<AxiosResponse<IResponse>> {

    return request({

        url: api.getoBJList,

        method: 'post',

        data: param,

        responseType: 'blob'

    })

}

// 下载请求

export interface DownGet {

    key: string

}

   /// <summary>

        /// 读取文件

        /// </summary>

        /// <param name="Name"></param>

        /// <param name="path"></param>

        /// <returns></returns>

        private FileStreamResult DownloadFile(string Name, string key, string path = null)

        {

            if (string.IsNullOrEmpty(path))

                path = $"{Directory.GetCurrentDirectory()}/wwwroot";

            //Determine the Content Type of the File.

            string contentType = "";

            new FileExtensionContentTypeProvider().TryGetContentType(Name, out contentType);

            //Build the File Path.

            path = Path.Combine(path, Name);

            //Read the File data into FileStream.

            FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);

            //Send the File to Download.

            return new FileStreamResult(fileStream, contentType) { FileDownloadName = key };

        }

        /// <summary>

        /// 下载obj模型

        /// </summary>

        /// <param name="obj"></param>

        /// <returns></returns>

        [HttpPost("obj"), Authorize]

        public IActionResult DownoBJ(XJDataDll.DataHttp.Admin.Down.Select obj)

        {

            try

            {

                var model = (from v in _dbcontext.company_models.Where(o => obj.key.Equals(o.key)).OrderBy(v => v.index) select v).FirstOrDefault();

                FileStreamResult files = DownloadFile(model.path,model.key); 

                return files;

            }

            catch

            {

                return NotFound();

            }

        }