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

In This Topic

Draws a circle on a GdPicture image.

Syntax

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

'Declaration
 
Public Overloads Function DrawCircle( _
   ByVal ImageID As Integer, _
   ByVal DstLeft As Single, _
   ByVal DstTop As Single, _
   ByVal Diameter As Single, _
   ByVal PenColor As GdPictureColor, _
   ByVal PenWidth As Single, _
   ByVal AntiAlias As Boolean _
) As GdPictureStatus

public GdPictureStatus DrawCircle( 
   int ImageID,
   float DstLeft,
   float DstTop,
   float Diameter,
   GdPictureColor PenColor,
   float PenWidth,
   bool AntiAlias
)

public function DrawCircle( 
    ImageID: Integer;
    DstLeft: Single;
    DstTop: Single;
    Diameter: Single;
    PenColor: GdPictureColor;
    PenWidth: Single;
    AntiAlias: Boolean
): GdPictureStatus;

public function DrawCircle( 
   ImageID : int,
   DstLeft : float,
   DstTop : float,
   Diameter : float,
   PenColor : GdPictureColor,
   PenWidth : float,
   AntiAlias : boolean
) : GdPictureStatus;

public: GdPictureStatus DrawCircle( 
   int ImageID,
   float DstLeft,
   float DstTop,
   float Diameter,
   GdPictureColor PenColor,
   float PenWidth,
   bool AntiAlias
)

public:
GdPictureStatus DrawCircle( 
   int ImageID,
   float DstLeft,
   float DstTop,
   float Diameter,
   GdPictureColor PenColor,
   float PenWidth,
   bool AntiAlias
)

Parameters

ImageID: GdPicture image identifier.
DstLeft: Specifies the x-coordinate of the center of the circle.
DstTop: Specifies the y-coordinate of the center of the circle.
Diameter: Diameter of the circle in pixel.
PenColor: Color of the circle. A suitable color value can be obtained by using the ARGB() method.
PenWidth: The width, in pixel, of the pen used to draw the circle.
AntiAlias: Set to True to apply the Antialiasing algorithm else False.

Return Value

A member of the GdPictureStatus enumeration.

Example

Drawing a red circle on a png image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.png");
 
    gdpictureImaging.DrawCircle(imageID, 100, 100, 100, gdpictureImaging.ARGB(255, 255, 0, 0), 1, true);
 
    gdpictureImaging.SaveAsPNG(imageID, "output.png");
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

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