Graphics.FillClosedCurve Method (Brush, Point[], FillMode)

 

Fills the interior of a closed cardinal spline curve defined by an array of Point structures using the specified fill mode.

Namespace:   System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public void FillClosedCurve(
	Brush brush,
	Point[] points,
	FillMode fillmode
)

Parameters

brush
Type: System.Drawing.Brush

Brush that determines the characteristics of the fill.

points
Type: System.Drawing.Point[]

Array of Point structures that define the spline.

fillmode
Type: System.Drawing.Drawing2D.FillMode

Member of the FillMode enumeration that determines how the curve is filled.

Exception Condition
ArgumentNullException

brush is null.

-or-

points is null.

This method fills the interior of a closed cardinal spline that passes through each point in the array. If the last point does not match the first point, an additional curve segment is added from the last point to the first point to close it.

The array of points must contain at least four Point structures.

This method uses a default tension of 0.5.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a solid red brush.

  • Creates an array of four points to define a spline.

  • Sets the fill mode to Winding.

  • Fills the curve on the screen.

The curve has a default tension of 0.5.

public void FillClosedCurvePointFillMode(PaintEventArgs e)
{

    // Create solid brush.
    SolidBrush redBrush = new SolidBrush(Color.Red);

    //Create array of points for curve.
    Point point1 = new Point(100, 100);
    Point point2 = new Point(200,  50);
    Point point3 = new Point(250, 200);
    Point point4 = new Point(50, 150);
    Point[] points = {point1, point2, point3, point4};

    // Set fill mode.
    FillMode newFillMode = FillMode.Winding;

    // Fill curve on screen.
    e.Graphics.FillClosedCurve(redBrush, points, newFillMode);
}

.NET Framework
Available since 1.1
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