Enum values
| Name | Value | Description |
|---|---|---|
| Natural | 0 | Tangents are continuous, but determined by the natural tension of the spline. |
| Planar | 1 | Tangents on either side are always horizontal. |
| Smooth | 2 | Tangents on either side are parallel. |
| Sharp | 3 | Tangents on either side may point freely in different directions. |