DrawBezier(Int32,Single,Single,Single,Single,Single,Single,Single,Single,Single,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 Single, _

   ByVal Top1 As Single, _

   ByVal Left2 As Single, _

   ByVal Top2 As Single, _

   ByVal Left3 As Single, _

   ByVal Top3 As Single, _

   ByVal Left4 As Single, _

   ByVal Top4 As Single, _

   ByVal PenWidth As Single, _

   ByVal PenColor As Integer, _

   ByVal AntiAlias As Boolean _

) As GdPictureStatus

public GdPictureStatus DrawBezier( 

   int ImageID,

   float Left1,

   float Top1,

   float Left2,

   float Top2,

   float Left3,

   float Top3,

   float Left4,

   float Top4,

   float PenWidth,

   int PenColor,

   bool AntiAlias

)

public function DrawBezier( 

    ImageID: Integer;

    Left1: Single;

    Top1: Single;

    Left2: Single;

    Top2: Single;

    Left3: Single;

    Top3: Single;

    Left4: Single;

    Top4: Single;

    PenWidth: Single;

    PenColor: Integer;

    AntiAlias: Boolean

): GdPictureStatus;

public function DrawBezier( 

   ImageID : int,

   Left1 : float,

   Top1 : float,

   Left2 : float,

   Top2 : float,

   Left3 : float,

   Top3 : float,

   Left4 : float,

   Top4 : float,

   PenWidth : float,

   PenColor : int,

   AntiAlias : boolean

) : GdPictureStatus;

public: GdPictureStatus DrawBezier( 

   int ImageID,

   float Left1,

   float Top1,

   float Left2,

   float Top2,

   float Left3,

   float Top3,

   float Left4,

   float Top4,

   float PenWidth,

   int PenColor,

   bool AntiAlias

)

public:

GdPictureStatus DrawBezier( 

   int ImageID,

   float Left1,

   float Top1,

   float Left2,

   float Top2,

   float Left3,

   float Top3,

   float Left4,

   float Top4,

   float 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.

Remarks

This method requires the Image Documents component to run.

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);

}

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