DrawBezier(Int32,Int32,Int32,Int32,Int32,Int32,Int32,Int32,Int32,Int32,Int32,Boolean) Method

In This Topic

Draws a bezier spline on a GdPicture image. The drawing color is specified with an integer value.

Syntax

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

'Declaration
 
Public Overloads Function DrawBezier( _
   ByVal ImageID As Integer, _
   ByVal Left1 As Integer, _
   ByVal Top1 As Integer, _
   ByVal Left2 As Integer, _
   ByVal Top2 As Integer, _
   ByVal Left3 As Integer, _
   ByVal Top3 As Integer, _
   ByVal Left4 As Integer, _
   ByVal Top4 As Integer, _
   ByVal PenWidth As Integer, _
   ByVal PenColor As Integer, _
   ByVal AntiAlias As Boolean _
) As GdPictureStatus

public GdPictureStatus DrawBezier( 
   int ImageID,
   int Left1,
   int Top1,
   int Left2,
   int Top2,
   int Left3,
   int Top3,
   int Left4,
   int Top4,
   int PenWidth,
   int PenColor,
   bool AntiAlias
)

public function DrawBezier( 
    ImageID: Integer;
    Left1: Integer;
    Top1: Integer;
    Left2: Integer;
    Top2: Integer;
    Left3: Integer;
    Top3: Integer;
    Left4: Integer;
    Top4: Integer;
    PenWidth: Integer;
    PenColor: Integer;
    AntiAlias: Boolean
): GdPictureStatus;

public function DrawBezier( 
   ImageID : int,
   Left1 : int,
   Top1 : int,
   Left2 : int,
   Top2 : int,
   Left3 : int,
   Top3 : int,
   Left4 : int,
   Top4 : int,
   PenWidth : int,
   PenColor : int,
   AntiAlias : boolean
) : GdPictureStatus;

public: GdPictureStatus DrawBezier( 
   int ImageID,
   int Left1,
   int Top1,
   int Left2,
   int Top2,
   int Left3,
   int Top3,
   int Left4,
   int Top4,
   int PenWidth,
   int PenColor,
   bool AntiAlias
)

public:
GdPictureStatus DrawBezier( 
   int ImageID,
   int Left1,
   int Top1,
   int Left2,
   int Top2,
   int Left3,
   int Top3,
   int Left4,
   int Top4,
   int PenWidth,
   int PenColor,
   bool AntiAlias
)

Parameters

ImageID: GdPicture image identifier.
Left1: Specifies the x-coordinate of the starting point of the Bezier spline.
Top1: Specifies the y-coordinate of the starting point of the Bezier spline.
Left2: Specifies the x-coordinate of the first control point of the Bezier spline.
Top2: Specifies the y-coordinate of the first control point of the Bezier spline.
Left3: Specifies the x-coordinate of the second control point of the Bezier spline.
Top3: Specifies the y-coordinate of the second control point of the Bezier spline.
Left4: Specifies the x-coordinate of the ending point of the Bezier spline.
Top4: Specifies the y-coordinate of the ending point of the Bezier spline.
PenWidth: The width, in pixel, of the pen used to draw the arc.
PenColor: Color of the Bezier spline. A suitable color value can be obtained by using the ARGBI() method.
AntiAlias: Set to True to apply the Antialiasing algorithm else False.

Return Value

A member of the GdPictureStatus enumeration.

Example

Drawing a red circle approximation using four Bezier curves on a png image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.png");
 
    // Draw a circle approximation.
    gdpictureImaging.DrawBezier(imageID, 100, 50, 127, 50, 150, 73, 150, 100, 1, gdpictureImaging.ARGBI(255, 255, 0, 0), true);
    gdpictureImaging.DrawBezier(imageID, 150, 100, 150, 127, 127, 150, 100, 150, 1, gdpictureImaging.ARGBI(255, 255, 0, 0), true);
    gdpictureImaging.DrawBezier(imageID, 100, 150, 73, 150, 50, 127, 50, 100, 1, gdpictureImaging.ARGBI(255, 255, 0, 0), true);
    gdpictureImaging.DrawBezier(imageID, 50, 100, 50, 73, 73, 50, 100, 50, 1, gdpictureImaging.ARGBI(255, 255, 0, 0), true);
 
    gdpictureImaging.SaveAsPNG(imageID, "output.png");
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members
Overload List
ARGBI Method