节点捆包¶
捆包 是一种容器，可将多个值组合到一个接口中。这使得通过单一链接传输多个值成为可能，类似于编程中的 结构体。
捆包可减少节点组中暴露的输入和输出数量，并可包含混合数据类型，例如几何体、场、数值、物体，甚至嵌套的捆包。
一个立方体与柱体组合成捆包，随后又分离开来。¶
节点¶
以下节点用于处理捆包：
Bundle nodes allow adding or removing an arbitrary number of sockets, with flexible type support.
Bundles can be attached to geometry using get/set geometry bundle nodes. These can be used to pass bundled data between modifiers and objects.
Typed Bundles¶
A typed bundle is a bundle that contains a special Type item identifying its purpose. The type is stored as a string and allows node groups to recognize bundles without relying on their internal structure.
Using types makes bundles easier to exchange between node groups and different Geometry Nodes modifiers, since a node group can search for a specific type rather than assuming a particular bundle layout.
Bundles can also contain other bundles, allowing complex data to be organized hierarchically.
Creating Typed Bundles¶
The Add Typed Bundle operator creates a typed bundle by constructing a bundle containing the required Type item.
Important
The string item named Type is reserved for identifying typed bundles.
It should not be used for any other purpose within a bundle.
Searching Typed Bundles¶
The Get Nested Bundle Paths node searches a bundle hierarchy for bundles with a matching type.
This allows node groups to locate typed bundles even when they are nested inside other bundles.
For example, a geometry may contain multiple bundles describing different components. A node group can search for all bundles of a particular type without requiring them to exist at a fixed location.
用法¶
捆包在许多工作流程中都很有用：
简化界面 -- 将输入端整合至单个接口，提升清晰度。
物理模拟 -- 将所有实体和约束打包给解算器。
声明式系统 -- 存储复杂结构化数据以供后续评估。
纹理集 -- 将 PBR 贴图（基础色、粗糙度、法线贴图）合并到一个接口中。
接口同步¶
捆包使用接口名称来匹配其输入和输出。如果两个捆包节点已连接但签名不匹配，Blender 可自动提供同步功能。
节点首次连接时，同步会自动进行。
现有接口不会自动更新，以避免数据覆盖。
当检测到数据不匹配时，节点标题栏会显示一个 按钮（同步接口），允许手动执行同步操作。