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



xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
Gets the bounding rectangle of the image region. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function GetRegionBounds( _
   ByVal xform As RasterRegionXForm _
) As LeadRect
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
Dim xform As RasterRegionXForm
Dim value As LeadRect
 
value = instance.GetRegionBounds(xform)
C# 
public LeadRect GetRegionBounds( 
   RasterRegionXForm xform
)
C++/CLI 
public:
LeadRect GetRegionBounds( 
   RasterRegionXForm^ xform
) 

Parameters

xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.

Return Value

The bounding rectangle.

Example

Visual BasicCopy Code
Public Sub GetRegionBoundsExample()
      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, "Image1_GetRegionBounds.bmp")

      ' Load the image
      Dim image As RasterImage = codecs.Load(srcFileName)

      ' Add an ellipse inside a rectangle region to the image

      Dim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3)
      image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)

      rc = image.GetRegionBounds(Nothing)

      image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Xor)

      ' Invert the region area and save the image
      Dim command As InvertCommand = New InvertCommand()
      command.Run(image)
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)

      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 GetRegionBoundsExample()
   {
      RasterCodecs codecs = new RasterCodecs();

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_GetRegionBounds.bmp");

      // Load the image
      RasterImage image = codecs.Load(srcFileName);

      // Add an ellipse inside a rectangle region to the image

      LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
      image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

      rc = image.GetRegionBounds(null);

      image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Xor);

      // Invert the region area and save the image
      InvertCommand command = new InvertCommand();
      command.Run(image);
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);

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

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void GetRegionBoundsExample(Stream destStream)
{
   // create a new image to work with
   RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0);
   // Add an rectanle inside a rectangle region to the image

   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set);

   rc = image.GetRegionBounds(null);

   rc = new LeadRect(image.Width / 4, image.Height / 4, image.Width / 4, image.Height / 4);
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Xor);

   // Invert the region area and save the image
   InvertCommand command = new InvertCommand();
   command.Run(image);

   // Save the image back to file
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0);

   image.Dispose();
}
SilverlightVBCopy Code
Public Sub GetRegionBoundsExample(ByVal destStream As Stream)
   ' create a new image to work with
   Dim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)
   ' Add an rectanle inside a rectangle region to the image

   Dim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3)
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   rc = image.GetRegionBounds(Nothing)

   rc = New LeadRect(image.Width / 4, image.Height / 4, image.Width / 4, image.Height / 4)
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Xor)

   ' Invert the region area and save the image
   Dim command As InvertCommand = New InvertCommand()
   command.Run(image)

   ' Save the image back to file
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0)

   image.Dispose()
End Sub

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