The way the surface iso-lines align with the target
Enum values
| Name | Value | Description |
|---|---|---|
| Automatic | 0 | If the trim is on an iso direction use MatchTarget, else use Perpendicular |
| MatchTarget | 1 | The surface tangent will be parallel to the surface derivative in U- or V-direction |
| Perpendicular | 2 | The surface tangent will be perpendicular to the target edge |
| Preserve | 3 | The surface tangent will not change |