AlphaBlendCommand Constructor(RasterImage,LeadPoint,LeadRect,Int32)

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
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public AlphaBlendCommand( 
   RasterImage sourceImage,
   LeadPoint sourcePoint,
   LeadRect destinationRect,
   int opacity
)

'Declaration

Public Function New( _
   ByVal sourceImage As RasterImage, _
   ByVal sourcePoint As LeadPoint, _
   ByVal destinationRect As LeadRect, _
   ByVal opacity As Integer _
)

'Usage

Dim sourceImage As RasterImage
Dim sourcePoint As LeadPoint
Dim destinationRect As LeadRect
Dim opacity As Integer
 
Dim instance As New AlphaBlendCommand(sourceImage, sourcePoint, destinationRect, opacity)

public AlphaBlendCommand( 
   RasterImage sourceImage,
   LeadPoint sourcePoint,
   LeadRect destinationRect,
   int opacity
)

- (instancetype)initWithSourceImage:(LTRasterImage *)sourceImage
                        sourcePoint:(LeadPoint)sourcePoint
                    destinationRect:(LeadRect)destinationRect
                            opacity:(NSInteger)opacity

public AlphaBlendCommand(
   RasterImage sourceImage, 
   LeadPoint sourcePoint, 
   LeadRect destinationRect, 
   int opacity
)

function AlphaBlendCommand( 
   sourceImage ,
   sourcePoint ,
   destinationRect ,
   opacity 
)

public:
AlphaBlendCommand( 
   RasterImage^ sourceImage,
   LeadPoint sourcePoint,
   LeadRect destinationRect,
   int opacity
)

Parameters

sourceImage: RasterImage object that references the source image.
sourcePoint: LeadPoint structure that contains the origin of the source rectangle. The width and height are the same width and height for the destination rectangle.
destinationRect: LeadRect structure that contains the destination rectangle.
opacity: Opacity value used when combining the areas from the source and affected images. This value is between 0 and 255.

Run the AlphaBlendCommand on an image.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Effects

   
Public Sub AlphaBlendConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Dim srcImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\image3.cmp"), 24, CodecsLoadByteOrder.Bgr, 1, 1)

   Dim Left As Integer = CType((leadImage.Width / 8), Integer)
   Dim Top As Integer = CType((leadImage.Height / 8), Integer)
   Dim Width As Integer = CType(leadImage.Width, Integer)
   Dim Height As Integer = CType(leadImage.Height, Integer)

   ' Combine srcImage with image, with half opacity.
   Dim command As AlphaBlendCommand = New AlphaBlendCommand(srcImage, New LeadPoint(0, 0), New LeadRect(Left, Top, Width, Height), 128)
   command.Run(leadImage)
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

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.Effects;

      
public void AlphaBlendConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

   // Prepare the command
   RasterImage srcImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Image3.cmp"), 24, CodecsLoadByteOrder.Bgr, 1, 1);
   AlphaBlendCommand command = new AlphaBlendCommand(srcImage, new LeadPoint(0, 0), new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height), 128);
   command.Run(image);
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

}

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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Effects;
using Leadtools.ImageProcessing;

      
public async Task AlphaBlendConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   srcFileName = @"Assets\Image3.cmp";
   loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage srcImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   AlphaBlendCommand command = new AlphaBlendCommand(srcImage, LeadPointHelper.Create(0, 0), LeadRectHelper.Create(image.Width / 8, image.Height / 8, image.Width, image.Height), 128);
   command.Run(image);
   //Save as BMP
   string destFileName = @"result.bmp";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Effects;
using Leadtools.Examples;

public void AlphaBlendConstructorExample(RasterImage image, RasterImage srcImage, Stream outStream)
{
   // Prepare the command
   AlphaBlendCommand command = new AlphaBlendCommand(srcImage, new LeadPoint(0, 0), new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height), 128);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
   srcImage.Dispose();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Effects

Public Sub AlphaBlendConstructorExample(ByVal image As RasterImage, ByVal srcImage As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As AlphaBlendCommand = New AlphaBlendCommand(srcImage, New LeadPoint(0, 0), _
                                                            New LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height), 128)
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
   srcImage.Dispose()
End Sub

Target Platforms

Reference

AlphaBlendCommand Class
AlphaBlendCommand Members
Overload List