RectangleFromImage Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

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
)

 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.

For more information, refer to Accounting for View Perspective.

For more information, refer to Changing Image Coordinates.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

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

public void RectangleFromImageExample()
   {
      RasterCodecs codecs = new RasterCodecs();
      // Load an image that has BottomLeft ViewPerspective
      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

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();
            });
      }
   }
}

[TestMethod]
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();
}

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();
}

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

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

RasterImage Class
RasterImage Members