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LEADTOOLS (Leadtools assembly)
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RectangleFromImage Method








Leadtools Namespace > RasterImage Class : RectangleFromImage Method
Destination view perspective to which the rectangle should be translated.
The rectangle to translate.
Translates a rectangle from this RasterImage view perspective to the specified view perspective.
Syntax
public LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective,
   LeadRect rc
)
'Declaration
 

Public Function RectangleFromImage( _
   ByVal viewPerspective As RasterViewPerspective, _
   ByVal rc As LeadRect _
) As LeadRect
'Usage
 

Dim instance As RasterImage
Dim viewPerspective As RasterViewPerspective
Dim rc As LeadRect
Dim value As LeadRect
 
value = instance.RectangleFromImage(viewPerspective, rc)
public LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective,
   LeadRect rc
)
- (LeadRect)rectangleFromImage:(LTRasterViewPerspective)viewPerspective 
                    sourceRect:(LeadRect)src
            
public LeadRect rectangleFromImage(
  RasterViewPerspective viewPerspective, 
  LeadRect rc
)
            
 function Leadtools.RasterImage.RectangleFromImage( 
   viewPerspective ,
   rc 
)

public:
LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective,
   LeadRect 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.

Copy Code   
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.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;
using Leadtools.Drawing;
using Leadtools.Controls;
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();
}
RasterImageExamples.prototype.RectangleFromImageExample = function ( ) 
{
   Tools.SetLicense ( ) ;
   with (Leadtools) {
      with (Leadtools.Codecs) {
         var codecs = new RasterCodecs();
         // Load an image that has BottomLeft ViewPerspective
         var srcFileName = "Assets\\ULAY1.BMP";
         var image;
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
            .then(function (img) {
               image = img;

               var imageRectangle = LeadRectHelper.create(0, 0, image.width - 1, image.height - 1);
               imageRectangle = image.rectangleFromImage(Leadtools.RasterViewPerspective.topLeft, imageRectangle);
               console.info(imageRectangle.x + "," + imageRectangle.y + "," + imageRectangle.width + "," + imageRectangle.height);

               imageRectangle = LeadRectHelper.create(0, 0, image.width - 1, image.height - 1);
               imageRectangle = image.rectangleToImage(Leadtools.RasterViewPerspective.topRight, imageRectangle);
               console.info(imageRectangle.x + "," + imageRectangle.y + "," + imageRectangle.width + "," + imageRectangle.height);

               image.close();
               codecs.close();
            });
      }
   }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;

      
public async Task RectangleFromImageExample()
{
   RasterCodecs codecs = new RasterCodecs();
   // Load an image that has BottomLeft ViewPerspective
   string srcFileName = @"Assets\ULAY1.BMP";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));
   LeadRect imageRectangle = LeadRectHelper.Create(0, 0, image.Width - 1, image.Height - 1);
   imageRectangle = image.RectangleFromImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle);
   Debug.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.X, imageRectangle.Y, imageRectangle.Width, imageRectangle.Height));

   imageRectangle = LeadRectHelper.Create(0, 0, image.Width - 1, image.Height - 1);
   imageRectangle = image.RectangleToImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle);
   Debug.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.X, imageRectangle.Y, imageRectangle.Width, imageRectangle.Height));

   image.Dispose();
   codecs.Dispose();
}
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

See Also

Reference

RasterImage Class
RasterImage Members

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