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ShearCommand Class

Summary
Moves the corners of an image in the fashion of a parallelogram.
Syntax
C#
VB
Objective-C
C++
Java
public class ShearCommand : RasterCommand 
Public Class ShearCommand  
   Inherits RasterCommand 
@interface LTShearCommand : LTRasterCommand 
public class ShearCommand extends RasterCommand 
public ref class ShearCommand : public RasterCommand   
Remarks

You specify an angle of slant, horizontal or vertical shear, and the fill color for the created space. The following is a horizontal example:

Horizontal Shear

The angle is expressed in hundredths of degrees, with a limit of 4500 (45 degrees).

This command supports signed/unsigned data images.

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

Example

This example shears the image 15 degrees vertically, filling extra space with blue.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
 
 
public void ShearCommandExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "ShearCommand.bmp"); 
 
	// Load the source image from disk 
	RasterImage image = codecs.Load(srcFileName); 
 
	// Shear the image 15 degrees vertically 
	ShearCommand command = new ShearCommand(); 
	command.Angle = -15 * 100; 
	command.FillColor = new RasterColor(255, 255, 255); 
	command.Horizontal = false; 
	command.Run(image); 
 
	// Save the image back to disk 
	codecs.Save(image, destFileName, RasterImageFormat.Bmp, 32); 
 
	// Clean Up 
	image.Dispose(); 
	codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
 
Public Sub ShearCommandExample() 
   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, "ShearCommand.bmp") 
 
   ' Load the source image from disk 
   Dim image As RasterImage = codecs.Load(srcFileName) 
 
   ' Shear the image 15 degrees vertically 
   Dim command As ShearCommand = New ShearCommand() 
   command.Angle = -15 * 100 
   command.FillColor = New RasterColor(255, 255, 255) 
   command.Horizontal = False 
   command.Run(image) 
 
   ' Save the image back to disk 
   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 32) 
 
   ' Clean Up 
   image.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS22\Resources\Images" 
End Class 
Requirements

Target Platforms

Help Version 22.0.2021.11.10
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Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.