# USDZ Convert

* [**How to create USDZ file using Xcode converter?**](https://stackoverflow.com/questions/50846627/how-to-create-usdz-file-using-xcode-converter?rq=1)

```
In macOS 10.15 Catalina and Xcode 11 USDZ converter has a rich set of 
commands and supports more input formats for conversion than previous version. 
But before using it you need to download usdz Tools. 
And don't forget to setup a global variables for Python usdz tools. 
Here's how a new command looks like in Terminal:
```

記錄實作方法： PS: 做圖檔烘培是為了讓輸出的 usdz 模型有顏色

* 拆 UV 1. 先開啟兩個視窗 2. 右邊視窗切換成 UV/Image Editor 3. 建立UV：左邊視窗點 U -> Smart UV Project，右邊會產生 UV 網格 

![](https://1934061725-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M4XrCDvjc3xNfiB-3eT%2F-M4Y-TstkTXMD9Y8W9l7%2F-M4Y03baLprcuBid1pED%2FSmartUV.png?alt=media\&token=a4113edc-4159-4fa5-8ce1-e2228136865b)

* 圖檔烘培 3-1. 選擇要烘培的節點 3-2. 選擇 Edit Mode 3-3. 按 A，全選 4. 命名一個新的圖片名稱 5. 選擇相機（這是 Render 功能） 6. 點 Bake，開始烘培 7. 將烘培圖片儲存 ( EX: alpha.png )

```
注意: 一定要打燈光，否則烘培出來的圖會一片黑，至少前後打兩盞
```

![](https://1934061725-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M4XrCDvjc3xNfiB-3eT%2F-M4Y-TstkTXMD9Y8W9l7%2F-M4Y03b6zRfgErCQNst6%2FBake.png?alt=media\&token=7537c8f0-804e-4037-95e2-190b067ac11b)

* blender 輸出 obj 檔 ( EX: Alpha.obj )
* 下載 USDZ 轉換工具
  * [**USDZ Convert 工具官網下載**](https://developer.apple.com/download/more/?=USDPython)
* 執行以下指令，即可產出有顏色的 usdz 檔

  ```
  usdzconvert Alpha.obj -diffuseColor alpha.png
  ```


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