# Progression enum

Namespace: [Grasshopper2.Imaging.Raycasting.Shaders](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.imaging.raycasting.shaders.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public enum Progression
```

Enumerates the possible repetition types for gradient fills.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | Gradients aren't limited and simply continue beyond their specified domain. |
| Clip | 1 | Gradients are clipped to their specified domain. |
| Repeat | 2 | Gradients repeat over and over again. |
| Flip | 3 | Gradients repeat over and over again with each second repetition reversed. |