Hi,

     I was trying to get the intersection of a circle and and arc.

     My code is returning a different intersection, please see the attached file for reference.

     Here's my code, the return value is an 'intersect' value is an array of four doubles, which means there is only 1 intersection.

private object GetAllItersections(ModelDoc2 modelDoc, SketchSegment fillet, SketchSegment circle)

        {

            Curve filletCurve = (Curve)fillet.GetCurve();

            Curve circleCurve = (Curve)circle.GetCurve();

            SketchPoint filletStPt;

            SketchPoint filletEndPt;

            SketchArc circleArc = (SketchArc)circle; // Convert the circle form SketchSegment to SketchArc to get the centerPoint and endPoint

            SketchPoint arcStPt = GetArcStartPoint(circleArc);

            SketchPoint arcEndPt = GetArcEndPoint(circleArc);

            try

            {

                filletStPt = GetLineStartPoint((SketchLine)fillet);

                filletEndPt = GetLineEndPoint((SketchLine)fillet);

            }

            catch

            {

                filletStPt = GetArcStartPoint((SketchArc)fillet);

                filletEndPt = GetArcEndPoint((SketchArc)fillet);

            }

            object intersect = filletCurve.IntersectCurve(circleCurve,

                new double[] { filletStPt.X, filletStPt.Y, filletStPt.Z },

                new double[] { filletEndPt.X, filletEndPt.Y, filletEndPt.Z },

                new double[] { arcStPt.X, arcStPt.Y, arcStPt.Z },

                new double[] { arcEndPt.X, arcEndPt.Y, arcEndPt.Z });

            if (!intersect.Equals(DBNull.Value))

            {

                return intersect;

            }

            else

            {

                return null;

            }

        }

         I would really appreciate if someone could pinpoint what's wrong in my code.

         Thanks in advance!

Best Regards,

J.Torres