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AnyImage/openspec/changes/add-projected-depth-symmetry/proposal.md
nan dc000e50b1 feat: Implement weight cutout boundary smoothing for image depth cutout
- Added a new proposal for boundary smoothing in the weight cutout process, differentiating between Split edges and Outline smoothing requirements.
- Introduced a new capability `cutout-boundary-smoothing` to control smoothing strength and default values.
- Updated specifications to define the behavior of boundary-specific smoothing strength and default settings.
- Created tasks to verify the implementation of boundary behavior and asset updates.
- Developed comprehensive tests for depth symmetry and normal scaling to ensure expected behavior and performance.
- Introduced new attributes for normal mapping to facilitate persistent face attributes sharing between depth symmetry and image materials.
- Built a new node group for O Image Depth Symmetry, integrating the new smoothing capabilities and ensuring compatibility with existing workflows.
2026-09-14 12:44:20 +08:00

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Why

现有 Depth Balloon 始终向原 Cutout 剪影收拢。用户需要另一种对称形体:轮廓随深度投射变化,两侧围绕固定 XY 平面对称,并通过直壁补成完整网格。小车独立实验已验证效果;直接构建版本在保留相同边界平滑时,比布尔原型约快 5.7–7.1 倍。

What Changes

  • 将功能命名为 Depth Symmetry,节点组命名为 O Image Depth Symmetry,提供 Balloon / Projected 两种模式。
  • Balloon 保持原有行为;Projected 直接采样深度、调整投射方向、删除越界面、镜像并补直壁。
  • Lasso 默认使用 Balloon,Polyline 默认使用 Projected;创建后仍可通过 Mode 切换。与现有 Depth Cutout 的 Lasso → Balloon / Polyline → Shell 对应。
  • 正面保持在局部 Z≥0;开启 Double Sided 后,两侧关于局部 Z=0 对称,外边界沿 Z 轴连接,形成封闭网格。
  • 复用公共采样、清理、平滑和节点接口构建函数,新模式独立构建,不使用布尔或依赖 Depth Plane、Depth Cutout 节点组。
  • BREAKING:将节点资产名、Shape 标识 DEPTH_BALLOON、构建模块及相关代码名称统一为 Depth Symmetry,不保留旧名转发或兼容资产。

Capabilities

New Capabilities

  • image-depth-symmetry: 双模式深度对称节点、直壁封闭、手势预设、命名和性能约束。

Modified Capabilities

无。当前 openspec/specs 尚无可修改的已归档规格。

Impact

  • tools/nodes/groups/image_depth_balloon.py、相关公共构建函数、节点组构建与校验入口。
  • src/anyimage/operators/cutout_tool 的 Shape 菜单、手势分派、深度校准与对象创建,以及相关界面文本。
  • src/anyimage/assets/O_AnyImage.blend 和对应节点、对象创建、资产清单测试。
  • 实现时运行相关测试与 uv run node-group build,更新并验证源码及资产;不新增依赖。