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RectangleFromImage Method

Summary

Translates a rectangle from this RasterImage view perspective to the specified view perspective.

Syntax

C#
VB
Java
Objective-C
WinRT C#
C++
Public Function RectangleFromImage( _ 
   ByVal viewPerspective As Leadtools.RasterViewPerspective, _ 
   ByVal rc As Leadtools.LeadRect _ 
) As Leadtools.LeadRect 
- (LeadRect)rectangleFromImage:(LTRasterViewPerspective)viewPerspective  
                    sourceRect:(LeadRect)src 
             
public LeadRect rectangleFromImage( 
  RasterViewPerspective viewPerspective,  
  LeadRect rc 
) 
             
 function Leadtools.RasterImage.RectangleFromImage(  
   viewPerspective , 
   rc  
) 

Parameters

viewPerspective
Destination view perspective to which the rectangle should be translated.

rc
The rectangle to translate.

Return Value

The translated rectangle.

Remarks

For more information, refer to Accounting for View Perspective.

For more information, refer to Changing Image Coordinates.

Example

This example finds out where the selected rectangle of the image would be in a TopLeft ViewPerspective.

C#
VB
Silverlight C#
Silverlight VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Dicom; 
using Leadtools.Drawing; 
using Leadtools.Controls; 
using LeadtoolsExamples.Common; 
using Leadtools.Svg; 
 
public void RectangleFromImageExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
   // Load an image that has BottomLeft ViewPerspective 
   RasterImage image = codecs.Load(Path.Combine(ImagesPath.Path, "ULAY1.BMP")); 
 
   LeadRect imageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
   imageRectangle = image.RectangleFromImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle); 
   Console.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.Left, imageRectangle.Top, imageRectangle.Right, imageRectangle.Bottom)); 
 
   imageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
   imageRectangle = image.RectangleToImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle); 
   Console.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.Left, imageRectangle.Top, imageRectangle.Right, imageRectangle.Bottom)); 
 
   image.Dispose(); 
   codecs.Dispose(); 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Core 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.Controls 
Imports Leadtools.Dicom 
Imports Leadtools.Drawing 
Imports Leadtools.Svg 
 
Public Sub RectangleFromImageExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   ' Load an image that has BottomLeft ViewPerspective 
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP")) 
 
   Dim ImageRectangle As LeadRect = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleFromImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Console.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   ImageRectangle = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleToImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Console.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   image.Dispose() 
   codecs.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Dicom; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
using Leadtools.Windows.Media; 
 
public void RectangleFromImageExample(RasterImage image) 
{ 
   // image should be an image that has BottomLeft ViewPerspective (ulay1.bmp) 
 
   LeadRect ImageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
   ImageRectangle = image.RectangleFromImage(Leadtools.RasterViewPerspective.TopLeft, ImageRectangle); 
   Debug.WriteLine(string.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)); 
 
   ImageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
   ImageRectangle = image.RectangleToImage(Leadtools.RasterViewPerspective.TopLeft, ImageRectangle); 
   Debug.WriteLine(string.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)); 
 
   image.Dispose(); 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Dicom 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Core 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.Windows.Media 
 
Public Sub RectangleFromImageExample(ByVal image As RasterImage) 
   ' image should be an image that has BottomLeft ViewPerspective (ulay1.bmp) 
 
   Dim ImageRectangle As LeadRect = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleFromImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Debug.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   ImageRectangle = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleToImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Debug.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   image.Dispose() 
End Sub 

Requirements

Target Platforms

Help Version 19.0.2017.10.19
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