GraphicsPath.AddClosedCurve Method (Point[], Single)

The user must keep the original points if they are needed. The original points are converted to cubic Bézier control points internally, therefore there is no mechanism for returning the original points. If the first point and the last point in the points array are not the same point, the curve is closed by connecting these two points.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, an OnPaint event object. The code performs the following actions:

• Creates an array of six points (representing a cardinal spline).

• Creates a path and adds the closed cardinal spline curves to the path (closed from the endpoint to the starting point).

• Draws the path to screen.

Notice that a tension of 0.5 is used.

private void AddClosedCurveExample(PaintEventArgs e)
{

    // Creates a symetrical, closed curve.
    Point[] myArray =
             {
                 new Point(20,100),
                 new Point(40,150),
                 new Point(60,125),
                 new Point(40,100),
                 new Point(60,75),
                 new Point(40,50)
             };

    // Create a new path and add curve.
    GraphicsPath myPath = new GraphicsPath();
    myPath.AddClosedCurve(myArray,.5f);
    Pen myPen = new Pen(Color.Black, 2);

    // Draw the path to screen.
    e.Graphics.DrawPath(myPen, myPath);
}

.NET Framework

.NET Framework Client Profile

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference