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RectangleFromImage Method
See Also 
Leadtools Namespace > RasterImage Class : RectangleFromImage Method



viewPerspective
Destination view perspective to which the rectangle should be translated.
rc
The rectangle to translate.
viewPerspective
Destination view perspective to which the rectangle should be translated.
rc
The rectangle to translate.
Translates a rectangle from this RasterImage view perspective to the specified view perspective. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function RectangleFromImage( _
   ByVal viewPerspective As RasterViewPerspective, _
   ByVal rc As LeadRect _
) As LeadRect
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
Dim viewPerspective As RasterViewPerspective
Dim rc As LeadRect
Dim value As LeadRect
 
value = instance.RectangleFromImage(viewPerspective, rc)
C# 
public LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective,
   LeadRect rc
)
C++/CLI 
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.

Example

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

Visual BasicCopy Code
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
C#Copy Code
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";
}
SilverlightCSharpCopy Code
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();
}
SilverlightVBCopy Code
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

Remarks

For more information, refer to Accounting for View Perspective.

For more information, refer to Changing Image Coordinates.

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7

See Also