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ResizeRegionCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Effects Namespace : ResizeRegionCommand Class



Resizes an image region by a specific number of pixels.

Syntax

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

Example

Run the ResizeRegionCommand on an image.

Visual BasicCopy Code
Public Sub ResizeRegionCommandExample()
   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 ResizeRegionCommand = New ResizeRegionCommand
   Dim rRgnRect As Rectangle = New Rectangle(20, 20, 100, 100) 'Rectangle that defines the region .
   'Create an elliptical region.
   leadImage.AddEllipseToRegion(Nothing, rRgnRect, RasterRegionCombineMode.Set)
   command.AsFrame = False
   'Contract the image region by 20 pixels.
   command.Dimension = 20
   command.Type = ResizeRegionCommandType.ContractRegion
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void ResizeRegionCommandExample() 
{ 
   // 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 
   ResizeRegionCommand command = new ResizeRegionCommand(); 
   Rectangle rRgnRect = new Rectangle(80, 20, 100, 40);  //Rectangle that defines the region . 
   //Create an elliptical region. 
   image.AddEllipseToRegion(null, rRgnRect, Leadtools.RasterRegionCombineMode.Set); 
   command.AsFrame = false; 
   //Contract the image region by 20 pixels. 
   command.Dimension = 20; 
   command.Type = ResizeRegionCommandType.ContractRegion; 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • This command keeps the same image and resizes the image region that it references.
  • 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 supports 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.ResizeRegionCommand

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