PointFromImage Method

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

public LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
)

'Declaration
 
Public Function PointFromImage( _
   ByVal viewPerspective As RasterViewPerspective, _
   ByVal pt As LeadPoint _
) As LeadPoint

'Usage
 
Dim instance As RasterImage
Dim viewPerspective As RasterViewPerspective
Dim pt As LeadPoint
Dim value As LeadPoint
 
value = instance.PointFromImage(viewPerspective, pt)

public LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
)

 function Leadtools.RasterImage.PointFromImage( 
   viewPerspective ,
   pt 
)

public:
LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective,
   LeadPoint pt
)

Parameters

viewPerspective: Destination view perspective to which the point should be translated.
pt: The point to translate.

Return Value

The translated point.

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 PointFromImageExample()
      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 ImagePoint As LeadPoint = New LeadPoint(0, 0)
      ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint)
      Console.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

      ImagePoint.X = 0
      ImagePoint.Y = 0
      ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint)
      Console.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

      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 PointFromImageExample()
   {
      RasterCodecs codecs = new RasterCodecs();
      // Load an image that has BottomLeft ViewPerspective
      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP"));

      LeadPoint ImagePoint = new LeadPoint(0, 0);
      ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
      Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

      ImagePoint.X = 0;
      ImagePoint.Y = 0;
      ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
      Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

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

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

RasterImageExamples.prototype.PointFromImageExample = 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 ImagePoint = LeadPointHelper.create(0, 0);
               ImagePoint = image.pointFromImage(RasterViewPerspective.topLeft, ImagePoint);
               console.info ( ImagePoint.x, ", ", ImagePoint.y);

               ImagePoint.x = 0;
               ImagePoint.y = 0;
               ImagePoint = image.pointToImage(RasterViewPerspective.topRight, ImagePoint);
               console.info ( ImagePoint.x, ", ", ImagePoint.y);

               image.close();
               codecs.close();});
      }
   }
}

[TestMethod]
public async Task PointFromImageExample()
{
   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));
   LeadPoint ImagePoint = LeadPointHelper.Create(0, 0);
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   ImagePoint.X = 0;
   ImagePoint.Y = 0;
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

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

public void PointFromImageExample(RasterImage image)
{
   // image should be an image that has BottomLeft ViewPerspective (ulay1.bmp)
   LeadPoint ImagePoint = new LeadPoint(0, 0);
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   ImagePoint.X = 0;
   ImagePoint.Y = 0;
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint);
   Debug.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y));

   image.Dispose();
}

Public Sub PointFromImageExample(ByVal image As RasterImage)
   ' image should be an image that has BottomLeft ViewPerspective (ulay1.bmp)
   Dim ImagePoint As LeadPoint = New LeadPoint(0, 0)
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint)
   Debug.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   ImagePoint.X = 0
   ImagePoint.Y = 0
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint)
   Debug.WriteLine(String.Format("{0},{1}", ImagePoint.X, ImagePoint.Y))

   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