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Generates a geometry from the given fromPt to the next intersection.
[Visual Basic .NET] Public Function Trace ( _ ByVal fromPt As IPoint, _ ByVal direction As IPoint, _ ByVal tolerance As Double _ ) As IPolyline
[C#] public IPolyline Trace ( IPoint fromPt, IPoint direction, double tolerance );
This method is called by the Vectorization Trace tool on the ArcScan toolbar.
The fromPt is the initial start point, the direction of trace is given by a direction point (end of the feedback arrow in the tool). A raster line within the tolerance is traced to the next intersection and the vector is returned as IPolyline. In the tool, this is used to create sketch geometry.