> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Voronoi Surface Lattice

## About this Block

**What it does:** Creates a Lattice from the Voronoi diagram of a list of Seed points and a Surface Mesh.

**Tips:**

* Seed points not on the Mesh are not included in the Voronoi Surface Lattice.
* The blocks **Random Points in Body** or **Random Points on Mesh** help create seed points.
* The Thickness of the lattice is a Scalar Field type, which allows for a variable Thickness.
* Open up the block's Properties Panel to view the beam, implicit, and thick graph properties.
  * These properties are populated based on the type of Unit Cell you use. An error sign with a tooltip appears next to the property if it is empty.

![Lattice from Surface Voronoi](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/surface_voronoi.png)

***

Creates a Lattice from the Voronoi diagram of a list of Points restricted to the surface boundary of a body.

### Inputs

| Name        | Type                                                               | Description                                          |
| ----------- | ------------------------------------------------------------------ | ---------------------------------------------------- |
| Seed points | [Point List](../../../../block-documentation/types/point)          | List of Points to generate the Voronoi Lattice from. |
| Thickness   | [Scalar Field](../../../../block-documentation/types/scalar-field) | Lattice thickness.                                   |
| Mesh        | [Mesh](../../../../block-documentation/types/mesh)                 | Mesh to generate the Voronoi Lattice on.             |

### Outputs

| Type                                                                                     |
| ---------------------------------------------------------------------------------------- |
| [Voronoi Surface Lattice](../../../../block-documentation/types/voronoi-surface-lattice) |