PointFromImage Method

C#
Visual Basic
WinRT C#
Java
Objective-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
)

- (LeadPoint)pointFromImage:(LTRasterViewPerspective)viewPerspective 
                sourcePoint:(LeadPoint)src

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.

This example finds out where the origin of the image should be. Then it converts a known point to bitmap coordinates.

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

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 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

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 PointFromImageExample()
{
   RasterCodecs codecs = new RasterCodecs();
   // Load an image that has BottomLeft ViewPerspective
   RasterImage image = codecs.Load(Path.Combine(ImagesPath.Path, "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();
}

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();});
      }
   }
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;

      
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();
}

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 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();
}

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 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

Reference

RasterImage Class
RasterImage Members