RhinoCommon API
CurveChangeClosedCurveSeam Method | 
            If this curve is closed, then modify it so that the start/end point is at curve parameter t.
            
Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll)
public bool ChangeClosedCurveSeam( double t )
Public Function ChangeClosedCurveSeam ( t As Double ) As Boolean
Parameters
- t
 - Type: SystemDouble
Curve parameter of new start/end point. The returned curves domain will start at t. 
Return Value
Type: Booleantrue on success, false on failure.