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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 
Managed Extensions for C++ 
public __gc class ResizeRegionCommand : public RasterCommand, IRasterCommand 
C++/CLI 
public ref class ResizeRegionCommand : public RasterCommand, IRasterCommand 

Example

Visual BasicCopy Code
ImageProcessing.Effects.ResizeRegionCommand
   Public Sub ResizeRegionCommandExample()
      RasterCodecs.Startup()
      Dim codecs As New RasterCodecs()
      codecs.ThrowExceptionsOnInvalidImages = True

      Dim leadImage As RasterImage = codecs.Load("C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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, "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24)

      RasterCodecs.Shutdown()
   End Sub
C#Copy Code
ImageProcessing.Effects.ResizeRegionCommand 
      public void ResizeRegionCommandExample() 
      { 
         // Load an image 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
         codecs.ThrowExceptionsOnInvalidImages = true; 
 
         RasterImage image = codecs.Load(@"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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, @"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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