采样编号

The Sample Index node retrieves values from a source geometry at a specific index.

Tip

If the Geometry used for the input is the same as the geometry from the field context, this node is equivalent to the 在编号处评估. Using that node is usually preferable since avoiding the geometry socket makes the whole setup easier to use in other situations and share.

Tip

Different components can have same attribute domain (Points). This node simply uses first component that not empty for such domain, checked in the order of: Mesh, Point Cloud, Curve. The 分离元素 can be used to sample directly from a specific component.

输入

几何数据

要检索属性的几何图形。

数值

A field to evaluate on the source Geometry. The values are then retrieved from specific indices for the output.

编号

Which index to use when retrieving the data from the input Value field. Any index can be connected, resulting in a "shuffling" of the values.

属性

数据类型

The data type to use for the retrieved values.

域

传输属性的 属性域 ，换句话说，用于评估 属性 输入的域。例如，可以将数据从一个几何体的面传输到另一个几何体的点。

钳制

Clamp the indices to the size of the attribute domain instead of outputting a default value for invalid indices.

输出

数值

The data retrieved from the source Geometry input.

示例

Here the node is used to copy the positions of one object to another. This recreates the behavior of the Transfer Attribute node from Blender versions before 3.4. This works best when their geometries have the same number of points and the same Topology.