DrawCurve Method - GdPicture.NET API Reference

DrawCurve Method

In This Topic

Draws a curve on a GdPicture image.

Syntax

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

'Declaration
 
Public Function DrawCurve( _
   ByVal ImageID As Integer, _
   ByVal arPoints() As Point, _
   ByVal PenWidth As Integer, _
   ByVal PenColor As Color, _
   ByVal AntiAlias As Boolean _
) As GdPictureStatus

public GdPictureStatus DrawCurve( 
   int ImageID,
   Point[] arPoints,
   int PenWidth,
   Color PenColor,
   bool AntiAlias
)

public function DrawCurve( 
    ImageID: Integer;
    arPoints: Pointarray of;
    PenWidth: Integer;
    PenColor: Color;
    AntiAlias: Boolean
): GdPictureStatus;

public function DrawCurve( 
   ImageID : int,
   arPoints : Point[],
   PenWidth : int,
   PenColor : Color,
   AntiAlias : boolean
) : GdPictureStatus;

public: GdPictureStatus DrawCurve( 
   int ImageID,
   Point[]* arPoints,
   int PenWidth,
   Color PenColor,
   bool AntiAlias
)

public:
GdPictureStatus DrawCurve( 
   int ImageID,
   array<Point>^ arPoints,
   int PenWidth,
   Color PenColor,
   bool AntiAlias
)

Parameters

ImageID: GdPicture image identifier.
arPoints: Array of System.Drawing.Point that specifies the coordinates that the cardinal spline passes through.
PenWidth: The width, in pixel, of the pen used to draw the curve.
PenColor: Color of the curve. 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 red curve on a png image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.png");
 
    System.Drawing.Point[] points = new System.Drawing.Point[4];
    points[0].X = 100;
    points[0].Y = 50;
    points[1].X = 150;
    points[1].Y = 100;
    points[2].X = 100;
    points[2].Y = 150;
    points[3].X = 50;
    points[3].Y = 100;
 
    gdpictureImaging.DrawCurve(imageID, points, 1, gdpictureImaging.ARGB(255, 255, 0, 0), true);
 
    gdpictureImaging.SaveAsPNG(imageID, "output.png");
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

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