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AnyImage/docs/internals/node-assets.md
nan 89087fc2e2 feat: Add new Geometry Nodes groups for image relief and shadeless shader
- Implemented the "O Image Relief Plane" Geometry Nodes group to create a fixed-base image relief using depth images and various parameters.
- Created the "O Shadeless" shader node group to display color without scene lighting while preserving shadows and reflections.
- Introduced a preview feature for node groups, allowing for interactive visualization of node arrangements in an HTML format.
- Added a template HTML file for rendering node previews with customizable views and controls.
2026-09-09 21:24:57 +08:00

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# 节点资产
## 构建节点资产
生产节点组由 `uv run build_node` 构建到 `src/anyimage/assets/O_AnyImage.blend`
节点组文件在 `tools/nodes/groups`
节点组规则:
- Group Input 按区域重复放置,Named Attribute 等字段入口就近读取;隐藏所有未使用输出,避免从远处拉线
- 跨区域暂存值用 Store Named Attribute 写入 `o_*` 命名空间,按用途分配前缀并明确 FACE、CORNER、POINT 域和存取时机;末尾用一个 Wildcard 模式的 Remove Named Attribute 清理该前缀,例如 `o_depth_*`,保留用户属性和 UV
- Capture Attribute 适合局部字段固定;若属性连线跨越多个步骤,改为命名属性,让计算分支独立展开
- 保留节点默认 `name` 和标题,不用 `label` 覆盖,不用 String 节点注解。Frame 仅用于确有包裹语义的区域
- 全接线的简单数学运算可折叠;需要阅读的常数、运算域和模式保持可见
- 修改器 Geometry Nodes 的输入 socket 默认使用 `SINGLE`
- socket `subtype` 按业务语义设置:长度用 `DISTANCE`,`0–1` 比例用 `FACTOR`,`0–100` 用 `PERCENTAGE`;无对应范围语义时保留默认
- 接口或布局变更须验证 socket 顺序与结构、未使用输出隐藏及几何求值;纯布局变更比较运算、默认值和实际连接,确认功能不变
## 资产清单
| 节点组 | 构建模块 |
| --- | --- |
| `O Image Plane` | `image_plane.py` |
| `O Image Depth Plane` | `image_depth_plane.py` |
| `O Image Relief Plane` | `image_relief_plane.py` |
| `O Image Layer` | `image_layer.py` |
| `O Image Depth Layer` | `image_depth_layer.py` |
| `O Shadeless` | `shadeless.py` |
| `O Image Cutout` | `image_cutout.py` |
| `O Image Depth Cutout` | `image_depth_cutout.py` |
| `O Image Depth Balloon` | `image_depth_balloon.py` |
## 构建资产脚本
`tools/nodes/build.py` 按依赖顺序构建资产,调用 `arrangement/` 统一排列几何节点组后保存。`common/` 提供共用构建函数,`preview/` 导出交互预览。
保存后,`check.py` 在独立 Blender 进程中重新加载资产并做基本几何求值。接口、默认值和详细几何行为由 `tests/` 检查。
```bash
uv run build_node --blender "/path/to/blender"
uv run build_node --skip-tests
```
脚本按 `--blender`、环境变量 `BLENDER_BIN`、项目 `.env`、`PATH` 的顺序查找 Blender。无法自动找到时,在项目根目录的 `.env` 中配置:
```dotenv
BLENDER_BIN="/absolute/path/to/blender"
```