RasterImage Constructor(RasterImage)

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public RasterImage( 
   RasterImage srcImage
)

'Declaration
 
Public Function New( _
   ByVal srcImage As RasterImage _
)

'Usage
 
Dim srcImage As RasterImage
 
Dim instance As New RasterImage(srcImage)

public RasterImage( 
   RasterImage srcImage
)

-(id)initWithImage:(LTRasterImage*)srcImage error:(NSError**)outError;

public RasterImage(RasterImage srcImage)

function RasterImage( 
   srcImage 
)

public:
RasterImage( 
   RasterImage^ srcImage
)

Parameters

srcImage: The RasterImage from which to create the new RasterImage.

This constructor will "pull" all the internal data (image pages, metadata, etc) from srcImage and puts a copy of them into the newly created RasterImage.

After calling this constructor, srcImage remains valid and changes to its properties or data will not affect the newly created RasterImage object.

This constructor is useful when deriving your own classes from RasterImage as shown in the example below.

For more information, refer to Grayscale Images.

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.WinForms
Imports Leadtools.Dicom
Imports Leadtools.Drawing

' A class that derives from RasterImage
Public Class MyRasterImage : Inherits RasterImage
   Private _myData As Integer
   Public Sub New(ByVal src As RasterImage)

      MyBase.New(src)
      _myData = 0
   End Sub

   Public Property MyData() As Integer
      Get
         Return _myData
      End Get
      Set(ByVal value As Integer)
         _myData = Value
      End Set
   End Property
End Class


Public Sub DerivedRasterImage()
   Dim codecs As RasterCodecs = New RasterCodecs()

   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")

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

   ' create a new MyRasterImage instance out of this image
   Dim myImage As MyRasterImage = New MyRasterImage(img)

   ' img is inavlid now and shoule be disposed
   img.Dispose()

   ' Now you can use myImage just like any other RasterImage but with your own data
   myImage.PaintGamma = 50 ' RasterImage property
   myImage.MyData = 10 ' MyRasterImage property

   Debug.Assert(myImage.PaintGamma = 50)
   Debug.Assert(myImage.MyData = 10)

   ' Clean up
   myImage.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.WinForms;
using Leadtools.Dicom;
using Leadtools.Drawing;

// A class that derives from RasterImage
public class MyRasterImage : RasterImage
{
   private int _myData;
   public MyRasterImage(RasterImage src)
      :
      base(src)
   {
      _myData = 0;
   }

   public int MyData
   {
      get
      {
         return _myData;
      }
      set
      {
         _myData = value;
      }
   }
}

      
public void DerivedRasterImage()
{
   RasterCodecs codecs = new RasterCodecs();

   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");

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

   // create a new MyRasterImage instance out of this image
   MyRasterImage myImage = new MyRasterImage(img);

   // img is inavlid now and shoule be disposed
   img.Dispose();

   // Now you can use myImage just like any other RasterImage but with your own data
   myImage.PaintGamma = 50;   // RasterImage property
   myImage.MyData = 10;       // MyRasterImage property

   Assert.IsTrue(myImage.PaintGamma == 50);
   Assert.IsTrue(myImage.MyData == 10);

   // Clean up
   myImage.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;

// A class that derives from RasterImage
public class MyRasterImage : RasterImage
{
   private int _myData;
   public MyRasterImage(RasterImage src)
      :
      base(src)
   {
      _myData = 0;
   }

   public int MyData
   {
      get
      {
         return _myData;
      }
      set
      {
         _myData = value;
      }
   }
}

public void DerivedRasterImage(RasterImage srcImage)
{
   // create a new MyRasterImage instance out of this image
   MyRasterImage myImage = new MyRasterImage(srcImage);

   // srcImage is inavlid now and should be disposed
   srcImage.Dispose();

   // Now you can use myImage just like any other RasterImage but with your own data
   myImage.TransparentColor = RasterColorConverter.FromColor(Colors.Blue);   // RasterImage property
   myImage.MyData = 10;       // MyRasterImage property

   Debug.Assert(myImage.MyData == 10);

   // Clean up
   myImage.Dispose();
}

Imports Leadtools
   Imports Leadtools.Codecs
   Imports Leadtools.Dicom
   Imports Leadtools.ImageProcessing
   Imports Leadtools.ImageProcessing.Core
   Imports Leadtools.ImageProcessing.Color
   Imports Leadtools.Windows.Media

   ' A class that derives from RasterImage
   Public Class MyRasterImage : Inherits RasterImage
      Private _myData As Integer
      Public Sub New(ByVal src As RasterImage)

MyBase.New(src)
         _myData = 0
      End Sub

      Public Property MyData() As Integer
         Get
            Return _myData
         End Get
         Set
            _myData = Value
         End Set
      End Property
   End Class

   Public Sub DerivedRasterImage(ByVal srcImage As RasterImage)
      ' create a new MyRasterImage instance out of this image
      Dim myImage As MyRasterImage = New MyRasterImage(srcImage)

      ' srcImage is inavlid now and should be disposed
      srcImage.Dispose()

      ' Now you can use myImage just like any other RasterImage but with your own data
      myImage.TransparentColor = RasterColorConverter.FromColor(Colors.Blue) ' RasterImage property
      myImage.MyData = 10 ' MyRasterImage property

      Debug.Assert(myImage.MyData = 10)

      ' Clean up
      myImage.Dispose()
     End Sub

Target Platforms

Reference

RasterImage Class
RasterImage Members
Overload List