Split Closed Sketch Segment Example (C#)

//---------------------------------------------------------------
// Preconditions:
// 1. Open a new part document.
// 2. Open the Immediate window.
//
// Postconditions:
// 1. Opens a sketch.
// 2. Creates a closed spline.
// 3. Splits the spline into two segments.
// 4. Examine the Immediate window.
//----------------------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System.Runtime.InteropServices;
using System;
using System.Diagnostics;

namespace SplitClosedSegment_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        ModelDoc2 swModel;
        SketchSegment swSketchSegment;
        object[] skSegmentArray;

        bool boolstatus;

        public void Main()
        {
            swModel = (ModelDoc2)swApp.ActiveDoc;

            boolstatus = swModel.Extension.SelectByID2("Front Plane", "PLANE", 0, 0, 0, false, 0, null, 0);
            swModel.SketchManager.InsertSketch(true);
            swModel.ClearSelection2(true);

            object pointArray = null;
            double[] points = new double[21];
            points[0] = -0.0243607314462504;
            points[1] = 0.0404155099449417;
            points[2] = 0;
            points[3] = -0.000849151208568891;
            points[4] = 0.0470352752545802;
            points[5] = 0;
            points[6] = 0;
            points[7] = 0.0395024388677502;
            points[8] = 0;
            points[9] = -0.00530037270987752;
            points[10] = 0.0358501545589842;
            points[11] = 0;
            points[12] = -0.00712651486426054;
            points[13] = 0.0283173181721542;
            points[14] = 0;
            points[15] = -0.023219392599761;
            points[16] = 0.0295727909032925;
            points[17] = 0;
            points[18] = -0.0243607314462504;
            points[19] = 0.0404155099449417;
            points[20] = 0;
            pointArray = points;

            swSketchSegment = swModel.SketchManager.CreateSpline((pointArray));
            swModel.ViewZoomtofit2();

            skSegmentArray = (object[])swModel.SketchManager.SplitClosedSegment(-0.0243607314462504, 0.0404155099449417, 0.0, -0.023219392599761, 0.0295727909032925, 0.0);

            // Close the sketch and rebuild
            swModel.SketchManager.Insert3DSketch(true);
 

            Debug.Print("Number of segments in sketch = " + skSegmentArray.Length);

        }


        public SldWorks swApp;

    }
}