GoStroke Split in Two

GoDiagram (6 and previous)
1

I need a bit of guidance in the following:

the user draw a Freehand stroke and want to cut of a piece of the stroke.
if you look at the image the cut must be on the red X the part in yellow can be selected and deleted afterwards.
2

You have GoStroke.GetSegmentNearPoint to get the index of the point in the list of points near the red X.



Then you have GoStroke properties/members PointsCount, GetPoint, SetPoint, SetPoints, RemovePoint, AddPoint and Copy to edit/duplicate the points in the stroke.