| Name | Value | Description |
| CubicInterpolator | 2 | Point are interpolated using a cubic function. |
| LinearInterpolator | 0 | The point values are interpolated linearly. |
| NearestInterpolator | 1 | The value is set to the value of whichever point is nearest. |
| SmoothInterpolator | 3 | Points are interpolated with smooth tangent transitions. |