Autodesk API: 系统不支持此文件格式 [.nwd 文件]

Autodesk API: The system does not support this file format [.nwd file]

我正在关注一个关于使用 WebGL 在浏览器中加载 CAD 文件的 Autodesk tutorial,并且正在尝试将我上传到他们的一个存储桶的 .nwd 文件转换为 "OBJ" .

然而,当我在上面教程的第二步中 运行 POST 请求时,我收到了一个 400(下面的完整响应)指示 x-ads-troubleshooting: The system does not support this file format,尽管事实上的 Autodesk documentation 表示支持 .nwd 文件。

这是我文件的完整路径(需要 Oauth 令牌):https://developer.api.autodesk.com/oss/v2/buckets/gathering-a-bulding-bucket/objects/Yale_Residential_Colleges_Arch.nwd

当我将项目添加到存储桶时,我获得了以下 objectId(文档也将其称为源 URN):

"objectId" : "urn:adsk.objects:os.object:gathering-a-bulding-bucket/Yale_Residential_Colleges_Arch.nwd"

我根据文档对这个字符串进行了 base64 编码并删除了多余的填充(末尾额外的 == 字符),结果如下:

dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6Z2F0aGVyaW5nLWEtYnVsZGluZy1idWNrZXQvWWFsZV9SZXNpZGVudGlhbF9Db2xsZWdlc19BcmNoLm53ZA

我现在尝试使用以下命令将此 nwd 文件转换为 OBJ:

curl -X 'POST' -H 'Authorization: Bearer OAUTHTOKENHERE' -H 'Content-Type: application/json' -v 'https://developer.api.autodesk.com/modelderivative/v2/designdata/job' -d '{"input":{"urn":"dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6Z2F0aGVyaW5nLWEtYnVsZGluZy1idWNrZXQvWWFsZV9SZXNpZGVudGlhbF9Db2xsZWdlc19BcmNoLm53ZA"},"output":{"formats":[{"type":"obj"}]}}'

此命令产生以下响应:

* Connected to developer.api.autodesk.com (52.7.124.118) port 443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
* Server certificate: developer.api.autodesk.com
* Server certificate: Symantec Class 3 Extended Validation SHA256 SSL CA
* Server certificate: VeriSign Universal Root Certification Authority
> POST /modelderivative/v2/designdata/job HTTP/1.1
> Host: developer.api.autodesk.com
> User-Agent: curl/7.43.0
> Accept: */*
> Authorization: Bearer OAUTHTOKENHERE
> Content-Type: application/json
> Content-Length: 181
>
* upload completely sent off: 181 out of 181 bytes
< HTTP/1.1 400 Bad Request
< Access-Control-Allow-Credentials: true
< Access-Control-Allow-Origin: *
< Content-Type: application/json; charset=utf-8
< Date: Fri, 09 Sep 2016 16:07:06 GMT
< Server: Apigee Router
< x-ads-app-identifier: platform-viewing-2016.08.01.1114.dbcc24a-production
< x-ads-duration: 525 ms
< x-ads-exception-id: c54954c5-dc74-4b09-961a-5eb7de82625b
< x-ads-startup-time: Wed Sep 07 01:40:23 UTC 2016
< x-ads-troubleshooting: The system does not support this file format.
< Content-Length: 61
< Connection: keep-alive
<
* Connection #0 to host developer.api.autodesk.com left intact
{"diagnostic":"Failed to trigger translation for this file."}

有人知道我可能忽略了什么吗?如果其他人可以提供任何帮助,我将不胜感激!

请看at this list of supported translations, you'll see that translation from .nwd to .obj is not supported, only to svf (which is used for Viewer).