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CHANGELOG.md
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# Change Log
All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).
## [1.3.1] - 2024-12-20
### Added
- example script to assemble face rig in Maya with textures `dna_viewer_build_rig_with_textures.py`
- added support for Maya 2024 in dna_calibration.mod file
## [1.3.0] - 2024-08-15
### Added
- support for Maya 2024
- support for Python 3.10
- added source code comments to python wrappers
### Fixed
- `CalculateMeshLowerLODsCommand` was rewritten to address edge cases discovered with eye lashes and to handle some common cases of invalid UV data.
- `RotateCommand` to rotate blend shape target deltas as well.
- `SetBlendShapeTargetDeltasCommand` to allow setting vertex indices as well.
- Swig generated classes are now wrapped instead of being monkey-patched to invoke constructors and destructors (which allows building with newer Swig versions - 4.0.x and 4.1.x).
### Changed
- CMake files to add test cases that execute the example scripts and allow generating bundled archives with CPack.
- Binaries for embeddedRL4 plugin to be .so files.
## [1.2.0] - 2023-06-30
### Added
- assets (gui.ma, Ada.dna, additional_assemble_script.py) which support MHC 2.x.x releases (UE 5.2 and 5.3)
## [1.1.0] - 2023-04-20
### Added
- support for Maya 2023
- support for Python 3.9
- `RenameAnimatedMapCommand` class to DNACalib API. Command to remove animated maps.
- `RemoveBlendShapeCommand` class to DNACalib API. Command to remove blend shapes.
- `DNA` class to DNAViewer API. This class is used for accessing data in DNA file.
- `rig_build` method to DNAViewer API. Method used for creating maya scene with functional rig. Replacement of method `assemble_rig`.
- `Config` class to DNAViewer API. Configuration class used for `build_meshes`.
- `RigConfig` class to DNAViewer API. Configuration class used for `rig_build`.
- documentation for DNA library.
### Fixed
- `ClearBlendShapesCommand` blend shape channel LODs were not correctly set.
- `RotateCommand` to rotate blend shape target deltas as well.
- `SetBlendShapeTargetDeltasCommand` to allow setting vertex indices as well.
### Changed
- changed signature of `build_meshes`. Method used for creating maya scene with meshes.
- Simplification of additional assemble script.
- option to pass list of indices to remove in remove commands.
### Removed
- removed method `assemble_rig` from DNAViewer API.

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LICENSE
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MetaHuman DNA Calibration License Agreement
This MetaHuman DNA Calibration License Agreement (“License Agreement”) is a legal document
detailing your rights and obligations related to your use of Epic’s proprietary
computer software known as MetaHuman DNA Calibration, including any updates, upgrades, or source
code made available to you by Epic (“Software”). By downloading or using the
Software, you are agreeing to be bound by the terms of this License Agreement,
and this License Agreement will be effective upon the first of those events to
occur. If you do not or cannot agree to the terms of this License Agreement, do
not use the Software.
1. Internal Production License. Subject to the terms and conditions herein,
Epic hereby grants you a worldwide, nonexclusive, royalty-free, non-sublicensable
license to reproduce and prepare derivative works of the Software for the sole
purpose of developing and using tools that enable third-party software programs
to export and edit digital characters in Epic’s proprietary MetaHuman format
(such exports, “MetaHuman Characters”). You may not distribute the Software or
make any use of the Software other than as expressly permitted in this Section 1.
2. MetaHuman Characters. You may only use MetaHuman Characters to the extent
such uses would be permitted if the MetaHuman Characters were licensed to you as
MetaHuman Content under the Epic Content License Agreement available at
https://www.unrealengine.com/en-US/eula/content. This means, for example, that
MetaHuman Characters may only be used in conjunction with Unreal Engine and Unreal
Engine-based products as designated by Epic, such as Twinmotion.
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README.md
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# MetaHuman DNA 校准
MetaHuman DNA 校准是一组用于处理 MetaHuman DNA 文件的工具，捆绑在一个单独的包中。
[`DNA`](/docs/dna.md#metahuman-dna) 是 [MetaHuman](https://www.unrealengine.com/en-US/metahuman) 身份的一个组成部分。
DNA 文件是使用 [MetaHuman Creator](https://metahuman.unrealengine.com/) 创建，并通过
[Quixel Bridge](https://docs.metahuman.unrealengine.com/en-US/downloading-metahumans-with-quixel-bridge/) 和 UE5 中的 Bifrost 下载的。
MetaHuman DNA 校准是一组用于处理 MetaHuman DNA 文件的工具，捆绑在一个单独的包中。我们希望分享此代码，以帮助用户自定义 DNA 文件，从而能够更好地将他们创建的角色集成到他们的游戏和体验中。
MetaHuman DNA 校准工具在 GitHub 存储库中提供，地址在此。
# 概述
关于存储库的组织方式的解释，[点击此处](docs/repository_organization.md)。
MetaHuman DNA 校准存储库包含两个不同的工具：
- [DNACalib](docs/dnacalib.md)（及其依赖项）
- [DNAViewer](docs/dna_viewer.md)
## 所需知识
要使用这些工具，您应该熟悉：
- 在 Maya 中的绑定
- Python
## 可选知识
- C++（用于 [DNACalib](docs/dnacalib.md) 及其 [API](docs/dnacalib_api.md)）
## DNACalib
[DNACalib](docs/dnacalib.md) 及其 [API](docs/dnacalib_api.md) 用于检查和修改 DNA 文件。使用 [DNACalib](docs/dnacalib.md)，您可以在 DNA 文件中进行以下更改：
- 重命名关节、网格、混合形状和/或动画映射。
- 删除关节、网格和/或关节动画。
- 旋转、缩放和平移装备。
- 删除 LOD。
- 更改中立关节位置、中立网格位置和混合形状增量值。
- 修剪混合形状。
- 删除所有混合形状数据。
MetaHuman DNA 文件格式的概述可以在 [`这里`](/docs/dna.md) 找到。
**注意**：DNACalib 库允许删除和重命名任何关节。然而，以下关节用于连接头部和身体，不应被删除或重命名：neck_01、neck_02、FACIAL_C_FacialRoot。
## 外部软件依赖项
DNACalib 的 Python 包装器是针对 Python 3.7 和 3.9 编译的。Windows 和 Linux（均为 64 位）的预编译二进制文件是存储库的一部分。
如果您使用的是不同版本的 Python，则必须重新编译。任何 Python 3 版本都应该可以。
如果用户具有不同的平台或架构，则必须编译库及其依赖项。
**重要**
DNA 文件作为 [LFS（大文件存储）](https://git-lfs.github.com/) 文件存储。如果安装并配置了 git-lfs 以供使用，它们将与其余代码一起下载。如果您未使用 git-lfs，则必须手动下载 DNA 文件。
更多信息可以在 [这里](docs/faq.md#fix--runtimeerror--error-loading-dna--dna-signature-mismatched-expected-dna-got-ver-) 找到。
**警告**：
不支持 Python 2。
DNACalib 可以在 C++ 项目中作为 C++ 库使用。
DNACalib Python 包装器可以在 Python 3.7 和 3.9 中使用，`mayapy`（与 Maya 一起提供的 Python 解释器）与 Maya 一起使用。
支持的 Maya 版本为 2022 和 2023。
注意：Maya 2022 与 Python 3.7 捆绑，Maya 2023 与 Python 3.9 捆绑。
## 环境设置
为了在您的脚本中使用 MetaHuman DNA 校准，您需要：
- 安装 Python3，参见 [注意事项](README.md#external-software-dependencies)，
- 将 MetaHuman DNA 校准的位置添加到 `MAYA_MODULE_PATH` 系统变量中（如果您想在 Maya 中使用 MetaHuman DNA 校准）
如果您计划从命令行运行脚本：
- 对于 Maya 的解释器（mayapy），您将必须使用以下代码初始化 maya：
```python
import maya.standalone
maya.standalone.initialize()
```
- 对于 python 解释器，您将必须在脚本顶部添加以下内容：
```python
from os import path as ospath
from sys import path as syspath
from sys import platform
ROOT_DIR = f"{ospath.dirname(ospath.abspath(__file__))}/..".replace("\\", "/")
MAYA_VERSION = "2022" # 或 2023
ROOT_LIB_DIR = f"{ROOT_DIR}/lib/Maya{MAYA_VERSION}"
if platform == "win32":
LIB_DIR = f"{ROOT_LIB_DIR}/windows"
elif platform == "linux":
LIB_DIR = f"{ROOT_LIB_DIR}/linux"
else:
raise OSError(
"操作系统不支持，请编译依赖项并为 LIB_DIR 添加值"
)
# 将目录添加到路径
syspath.insert(0, ROOT_DIR)
syspath.insert(0, LIB_DIR)
```
注意：
如果在 Linux 上运行，请确保在运行示例之前将 `LD_LIBRARY_PATH` 附加到 `lib/Maya2022/linux` 或 `lib/Maya2023/linux` 目录的绝对路径：
- `export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<路径到 lib-linux 目录>`
## DNAViewer
使用 DNAViewer，您可以：
- 为 Maya 创建功能性装备。
- 导出 FBX 文件。
- 读取 DNA 文件的内部部分。
DNAViewer 可以在 `mayapy`（与 Maya 一起提供的 Python 解释器）或 Maya 2022 中使用，除了 [从 Maya 场景传播更改到 dna](/examples/dna_viewer_grab_changes_from_scene_and_propagate_to_dna.py)，它只能在 Maya 中使用。
# 示例
提供了几个 Python 示例作为参考，可以在 **examples'** 文件夹中找到：
- [展示一些命令](/examples/dnacalib_demo.py)
- [重命名关节](/examples/dnacalib_rename_joint_demo.py)
- [从头创建一个小的 DNA](/examples/dna_demo.py)
- [读取二进制 DNA 并以人类可读格式写入](/examples/dna_binary_to_json_demo.py)
- [通过提取特定 LOD 从现有 DNA 创建新的 DNA](/examples/dnacalib_lod_demo.py)
- [删除关节](/examples/dnacalib_remove_joint.py)
- [清除混合形状数据](/examples/dnacalib_clear_blend_shapes.py)
- [从中立网格中减去值](/examples/dnacalib_neutral_mesh_subtract.py)
- [Maya 中的简单 UI](examples/dna_viewer_run_in_maya.py) 及其一些 [文档](docs/dna_viewer.md#usage-in-maya)
- [生成装备](/examples/dna_viewer_build_rig.py)
- [按 LOD 导出 FBX](/examples/dna_viewer_export_fbx.py)
- [从 Maya 场景传播更改到 dna](/examples/dna_viewer_grab_changes_from_scene_and_propagate_to_dna.py)
- [生成带有纹理的面部装备](/examples/dna_viewer_build_rig_with_textures.py)
注意：示例分为三组：DNA、DNACalib 和 DNAViewer。这些名称作为前缀嵌入：dna_、dnacalib_ 和 dna_viewer_。
## 示例 DNA 文件
[两个演示 DNA 文件](data/dna_files) 提供以便更轻松地测试此工具。任何使用 [MetaHumanCreator](https://www.unrealengine.com/en-US/metahuman) 生成的 DNA 都应该可以工作。
MHC 2023 春季发布对装备定义进行了更改（关节数量增加以及表达式数量增加）。
为了适应这些更改，我们在 `/data/mh4` 文件夹中向存储库添加了几个文件：新的 [gui 场景](/data/mh4/gui.ma)、更新的 [组装脚本](/data/mh4/additional_assemble_script.py) 和 Ada 的示例 [DNA 文件](data/mh4/dna_files/Ada.dna)。
如果用户想要切换并使用这个新的装备版本，则有必要在他们的脚本中更新路径：
```python
GUI = f"{DATA_DIR}/mh4/gui.ma"
ADDITIONAL_ASSEMBLE_SCRIPT = f"{DATA_DIR}/mh4/additional_assemble_script.py"
```
如果角色 DNA 是从 [Quixel Bridge](https://quixel.com/bridge) 下载的，并且我们不确定使用的是哪个装备定义，可以使用以下代码进行检查：
```python
from dna import (
BinaryStreamReader,
DataLayer_All,
FileStream,
Status,
)
def load_dna_reader(dna_file):
stream = FileStream(
dna_file, FileStream.AccessMode_Read, FileStream.OpenMode_Binary
)
reader = BinaryStreamReader(stream, DataLayer_All)
reader.read()
if not Status.isOk():
status = Status.get()
raise RuntimeError(f"错误加载 DNA: {status.message}")
return reader
角色_dna = "路径到/角色.dna"
reader = load_dna_reader(角色_dna)
if reader.getDBName() == "MH.4":
print("使用 mh4 文件夹")
elif reader.getDBName() == "DHI":
print("使用 data 文件夹")
else:
print("不支持的装备定义!")
```
# 注意
如果用户在 Maya 中运行示例，`ROOT_DIR` 的值应该更改并且必须使用绝对路径，
例如在 Windows 中为 `c:/MetaHuman-DNA-Calibration` 或在 Linux 中为 `/home/user/MetaHuman-DNA-Calibration`。重要：使用 `/`（正斜杠），Maya 在路径中使用正斜杠。
更多规格请参阅 [常见问题解答指南](docs/faq.md)。
# 许可证
MetaHuman DNA 校准随 [许可证](LICENSE) 发布。
# MetaHuman Custome Tool For Maya