ResizeCommand Class

Summary

Resizes the image from an existing image, and puts the resized image into a destination image, leaving the original image intact.

Syntax

Objective-C

C++

Java

public class ResizeCommand : RasterCommand

Public Class ResizeCommand  
   Inherits RasterCommand

@interface LTResizeCommand : LTRasterCommand

public class ResizeCommand extends RasterCommand

public ref class ResizeCommand : public RasterCommand

Remarks

The ResizeCommand command works by resizing the image data passed to the Run method into the image passed to the DestinationImage property.

The destination image must be initialized with the correct RasterImage.Width and RasterImage.Height of the new, resized image.

This command does not change the source image passed to the Run method. If you want to resize an image without creating a new version, use the SizeCommand.

For more information, refer to Introduction to Image Processing With LEADTOOLS.

Example

This example will load an image and then resize it into an existing, smaller image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using LeadtoolsExamples.Common; 
 
public void ResizeCommandExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); 
   string destFileName = Path.Combine(ImagesPath.Path, "ResizeCommand.bmp"); 
 
   // Load the source image from disk 
   RasterImage srcImage = codecs.Load(srcFileName); 
 
   // Create the destination image 
   RasterImage destImage = new RasterImage( 
      RasterMemoryFlags.Conventional, 
      100, 
      100, 
      srcImage.BitsPerPixel, 
      srcImage.Order, 
      srcImage.ViewPerspective, 
      srcImage.GetPalette(), 
      IntPtr.Zero, 
      0); 
 
   // Resize the source image into the destination image 
   ResizeCommand command = new ResizeCommand(); 
   command.DestinationImage = destImage; 
   command.Flags = RasterSizeFlags.Bicubic; 
   command.Run(srcImage); 
 
   // Save it to disk 
   codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 24); 
 
   // Clean Up 
   srcImage.Dispose(); 
   destImage.Dispose(); 
   codecs.Dispose(); 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
 
Public Sub ResizeCommandExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") 
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ResizeCommand.bmp") 
 
   ' Load the source image from disk 
   Dim srcImage As RasterImage = codecs.Load(srcFileName) 
 
   ' Create the destination image 
   Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 100, 100, srcImage.BitsPerPixel, 
                                                  srcImage.Order, srcImage.ViewPerspective, srcImage.GetPalette(), IntPtr.Zero, 0) 
 
   ' Resize the source image into the destination image 
   Dim command As ResizeCommand = New ResizeCommand() 
   command.DestinationImage = destImage 
   command.Flags = RasterSizeFlags.Bicubic 
   command.Run(srcImage) 
 
   ' Save it to disk 
   codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 24) 
 
   ' Clean Up 
   srcImage.Dispose() 
   destImage.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Examples; 
using Leadtools.ImageProcessing; 
using Leadtools.Windows.Media; 
 
public void ResizeCommandExample(RasterImage srcImage, Stream destStream) 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // Create the destination image 
   RasterImage destImage = new RasterImage( 
      RasterMemoryFlags.Conventional, 
      100, 
      100, 
      srcImage.BitsPerPixel, 
      srcImage.Order, 
      srcImage.ViewPerspective, 
      srcImage.GetPalette(), 
      null, 
      0); 
 
   // Resize the source image into the destination image 
   ResizeCommand command = new ResizeCommand(); 
   command.DestinationImage = destImage; 
   command.Flags = RasterSizeFlags.Bicubic; 
   command.Run(srcImage); 
 
   // Save it to disk 
   codecs.Save(destImage, destStream, RasterImageFormat.Bmp, 24); 
 
   // Clean Up 
   srcImage.Dispose(); 
   destImage.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.Windows.Media 
 
Public Sub ResizeCommandExample(ByVal srcImage As RasterImage, ByVal destStream As Stream) 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   ' Create the destination image 
   Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 100, 100, srcImage.BitsPerPixel, srcImage.Order, srcImage.ViewPerspective, srcImage.GetPalette(), Nothing, 0) 
 
   ' Resize the source image into the destination image 
   Dim command As ResizeCommand = New ResizeCommand() 
   command.DestinationImage = destImage 
   command.Flags = RasterSizeFlags.Bicubic 
   command.Run(srcImage) 
 
   ' Save it to disk 
   codecs.Save(destImage, destStream, RasterImageFormat.Bmp, 24) 
 
   ' Clean Up 
   srcImage.Dispose() 
   destImage.Dispose() 
End Sub

Requirements

Target Platforms

Reference

ResizeCommand Members

Leadtools.ImageProcessing Namespace

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