Wed, 09/17/2003 - 18:49
Forums:
Hi and please excuse me all again for bombarding this forum with BSplineCurves.
Is there a way, to compute a specific part from an already existing "bigger" BSplineCurve by only defining the part via 2 different gp_Pnt (or so) points from the BSplineCurve ?
Until now, I only found segment-functions that need parameters (knots ???) as arguments. Points would be much easier as I do not excactly know how these parameters are associated with the points.
Maybe knots ?
Does anyone have some relevant experience with it ?
Regards and excuses
Mike
Fri, 04/24/2009 - 15:14
Hi,
i have the same problem. I have two gp_Pnt2d located on a 2d-b-spline-curve and now i want to get the segment of the b-spline-curve between those points. But there is only this segment-function: Segment(const Standard_Real U1, const Standard_Real U2)
So does somebody know how to get the u-value of a given point?
Fri, 04/24/2009 - 17:44
You can use Geom_TrimmedCurve to define a segment of your BSplineCurve.
To get first and last parameters use ShapeAnalysis_Curve.
Fri, 04/24/2009 - 23:25
Hi marco,
thank you for your hint. Its working this way :)