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DrawStarCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.SpecialEffects Namespace : DrawStarCommand Class



Draws a star on the image. This command is available in the Raster Pro and above toolkits.

Syntax

Visual Basic (Declaration)  
Public Class DrawStarCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage) Copy Code
Dim instance As DrawStarCommand
C#  
public class DrawStarCommand : RasterCommand, IRasterCommand 
C++/CLI  
public ref class DrawStarCommand : public RasterCommand, IRasterCommand 

Example

Run the DrawStarCommand on an image.

Visual Basic Copy Code
Public Sub DrawStarCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As DrawStarCommand = New DrawStarCommand
   command.CenterPoint = New Point(leadImage.Width \ 2, leadImage.Height \ 2)
   command.Spoke = 5
   command.StarWidth = leadImage.Width \ 2
   command.StarHeight = leadImage.Height \ 2
   command.HoleSize = 50
   command.Phase = 0
   command.Angle = 0
   command.DistanceOpacity = 0
   command.SpokeDivision = 0
   command.AngleOpacity = 0
   command.BorderOpacity = 0
   command.LowerColorFill = New RasterColor(255, 0, 0)
   command.UpperColorFill = New RasterColor(0, 0, 255)
   command.Opacity = 100
   command.Flags = DrawStarCommandFlags.Inside

   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C# Copy Code
public void DrawStarCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   DrawStarCommand command = new DrawStarCommand(); 
 
   command.CenterPoint     = new Point(image.Width/2, image.Height/2); 
   command.Spoke           = 5; 
   command.StarWidth       = image.Width/2; 
   command.StarHeight      = image.Height/2; 
   command.HoleSize        = 50; 
   command.Phase           = 0; 
   command.Angle           = 0; 
   command.DistanceOpacity = 0; 
   command.SpokeDivision   = 0; 
   command.AngleOpacity    = 0; 
   command.BorderOpacity   = 0; 
   command.LowerColorFill  = new RasterColor(255, 0, 0); 
   command.UpperColorFill  = new RasterColor(0, 0, 255); 
   command.Opacity         = 100; 
   command.Flags           = DrawStarCommandFlags.Inside; 
 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • If the image has a region, the effect will be applied on the region only.
  • This command supports 12- and 16-bit grayscale and 48- and 64-bit color images. Support for 12- and 16-bit grayscale and 48- and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support signed data images.
  • This command does not support 32-bit grayscale images.
For more information, refer to Correcting Colors.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.SpecialEffects.DrawStarCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also