Constructs a new RasterImage from the specified existing RasterImage object.
public RasterImage(
RasterImage srcImage
)
Public Function New( _
ByVal srcImage As Leadtools.RasterImage _
)
public RasterImage(
Leadtools.RasterImage srcImage
)
- (nullable instancetype)initWithImage:(LTRasterImage *)rasterImage error:(NSError **)error
public RasterImage(RasterImage srcImage)
function RasterImage(
srcImage
)
public:
RasterImage(
Leadtools.RasterImage^ srcImage
)
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.
This example derives a new class from then use the RasterImage(RasterImage) constructor.
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 LeadtoolsExamples.Common;
using Leadtools.Svg;
// 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();
}
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
' 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.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
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