DrawRotatedEllipse(Int32,Single,Single,Single,Single,Single,Single,GdPictureColor,Boolean) Method

In This Topic

Draws a rotated ellipse on a GdPicture image.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Overloads Function DrawRotatedEllipse( _
   ByVal ImageID As Integer, _
   ByVal Angle As Single, _
   ByVal DstLeft As Single, _
   ByVal DstTop As Single, _
   ByVal Width As Single, _
   ByVal Height As Single, _
   ByVal PenWidth As Single, _
   ByVal PenColor As GdPictureColor, _
   ByVal AntiAlias As Boolean _
) As GdPictureStatus

public GdPictureStatus DrawRotatedEllipse( 
   int ImageID,
   float Angle,
   float DstLeft,
   float DstTop,
   float Width,
   float Height,
   float PenWidth,
   GdPictureColor PenColor,
   bool AntiAlias
)

public function DrawRotatedEllipse( 
    ImageID: Integer;
    Angle: Single;
    DstLeft: Single;
    DstTop: Single;
    Width: Single;
    Height: Single;
    PenWidth: Single;
    PenColor: GdPictureColor;
    AntiAlias: Boolean
): GdPictureStatus;

public function DrawRotatedEllipse( 
   ImageID : int,
   Angle : float,
   DstLeft : float,
   DstTop : float,
   Width : float,
   Height : float,
   PenWidth : float,
   PenColor : GdPictureColor,
   AntiAlias : boolean
) : GdPictureStatus;

public: GdPictureStatus DrawRotatedEllipse( 
   int ImageID,
   float Angle,
   float DstLeft,
   float DstTop,
   float Width,
   float Height,
   float PenWidth,
   GdPictureColor PenColor,
   bool AntiAlias
)

public:
GdPictureStatus DrawRotatedEllipse( 
   int ImageID,
   float Angle,
   float DstLeft,
   float DstTop,
   float Width,
   float Height,
   float PenWidth,
   GdPictureColor PenColor,
   bool AntiAlias
)

Parameters

ImageID: GdPicture image identifier.
Angle: Angle of rotation in degrees.
DstLeft: Specifies the x-coordinate of the upper-left corner of the rectangle that bounds the ellipse.
DstTop: Specifies the y-coordinate of the upper-left corner of the rectangle that bounds the ellipse.
Width: Specifies the width of the rectangle that bounds the ellipse.
Height: Specifies the height of the rectangle that bounds the ellipse.
PenWidth: Width, in pixel, of the pen used to draw the rectangle.
PenColor: Color of the ellipse. A suitable color value can be obtained by using the ARGB() method.
AntiAlias: Set to True to apply the Antialiasing algorithm else False.

Return Value

A member of the GdPictureStatus enumeration.

Example

Drawing a rotated ellipse on a GdPicture image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int left = 50, top = 100, width = 250, height = 150;
    float angle = 30.0f;
    int penWidth = 10;
    Color penColor = gdpictureImaging.ARGB(255, 0, 0, 255);
    int imageID = gdpictureImaging.CreateNewGdPictureImage(400, 400, System.Drawing.Imaging.PixelFormat.Format24bppRgb, gdpictureImaging.ARGB(0, 0, 0, 0));
 
    // Draw the rotated ellipse. The AntiAlias parameter is set to true to apply antialiasing algorithm, i.e. to improve the appearance of the ellipse boundary.
    gdpictureImaging.DrawRotatedEllipse(imageID, angle, left, top, width, height, penWidth, penColor, true);
 
    gdpictureImaging.SaveAsPNG(imageID, "output.png");
 
    // Release used resources.
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members
Overload List
ARGB(Byte,Byte,Byte,Byte) Method