# CrystalVisibility enum

Namespace: [Grasshopper2.UI.Crystallography](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.ui.crystallography.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public enum CrystalVisibility
```

Enumerates the possible visibility types of crystal edges.

## Values

| Name | Value | Description |
| --- | --- | --- |
| Back | -1 | Edge is behind some face. |
| Silhouette | 0 | Edge is part of the silhouette of the crystal. |
| Front | 1 | Edge is on the front of the crystal. |