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Graphics.FillClosedCurve Method (Brush, PointF[], FillMode, Single)

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

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

public void FillClosedCurve (
	Brush brush,
	PointF[] points,
	FillMode fillmode,
	float tension
)
public void FillClosedCurve (
	Brush brush, 
	PointF[] points, 
	FillMode fillmode, 
	float tension
)
public function FillClosedCurve (
	brush : Brush, 
	points : PointF[], 
	fillmode : FillMode, 
	tension : float
)
Not applicable.

Parameters

brush

A Brush that determines the characteristics of the fill.

points

Array of PointF structures that define the spline.

fillmode

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

tension

Value greater than or equal to 0.0F that specifies the tension of the curve.

Exception typeCondition

ArgumentNullException

brush is a null reference (Nothing in Visual Basic).

-or-

points is a null reference (Nothing in Visual Basic).

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.

The tension parameter determines the shape of the spline. If the value of the tension parameter is 0.0F, this method draws straight line segments to connect the points. Usually, the tension parameter is less than or equal to 1.0F. Values over 1.0F produce unusual results.

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.

  • Sets the tension to 1.0.

  • Fills the curve on the screen.

public void FillClosedCurvePointFFillModeTension(PaintEventArgs e)
{
             
    // Create solid brush.
    SolidBrush redBrush = new SolidBrush(Color.Red);
             
    // Create array of points for curve.
    PointF point1 = new PointF(100.0F, 100.0F);
    PointF point2 = new PointF(200.0F,  50.0F);
    PointF point3 = new PointF(250.0F, 200.0F);
    PointF point4 = new PointF(50.0F, 150.0F);
    PointF[] points = {point1, point2, point3, point4};
             
    // Set fill mode.
    FillMode newFillMode = FillMode.Winding;
             
    // Set tension.
    float tension = 1.0F;
             
    // Fill curve on screen.
    e.Graphics.FillClosedCurve(redBrush, points, newFillMode, tension);
}

public void FillClosedCurvePointFFillModeTension(PaintEventArgs e) 
{

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

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

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

    // Set tension.
    float tension = 1;

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

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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