FeatherAlphaBlendCommand Class

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

public class FeatherAlphaBlendCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class FeatherAlphaBlendCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As FeatherAlphaBlendCommand

public sealed class FeatherAlphaBlendCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Effects.FeatherAlphaBlendCommand()

public ref class FeatherAlphaBlendCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

To combine two images with a fixed opacity, use the AlphaBlendCommand.
The FeatherAlphaBlendCommand achieves feathering between two images by using variable opacity values, obtained from the fade mask referenced by MaskImage. Use the MaskSourcePoint to specify a region of the mask image, these values are the coordinates of the origin of the mask rectangle.
To create an image that contains a fade mask, use FadedMaskCommand command.
This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support signed data images.
This command does not support 32-bit grayscale images.

For more information, refer to Introduction to Image Processing With LEADTOOLS.

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

Public Sub FeatherAlphaBlendCommandExample()
   ' Load an image
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim backgroundImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"))
   Dim sourceImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "LittleGFlyingAlpha.png"), 32, CodecsLoadByteOrder.Bgr, 1, 1)
   Dim command As FeatherAlphaBlendCommand = New FeatherAlphaBlendCommand()
   command.DestinationRectangle = New LeadRect(0, 0, sourceImage.Width, sourceImage.Height)
   command.MaskImage = sourceImage.CreateAlphaImage()
   command.SourceImage = sourceImage
   command.SourcePoint = New LeadPoint(0, 0)
   command.Run(backgroundImage)
   codecs.Save(backgroundImage, 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

public void FeatherAlphaBlendCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      RasterImage backgroundImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));
      RasterImage sourceImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "LittleGFlyingAlpha.png"), 32, CodecsLoadByteOrder.Bgr, 1, 1);
      FeatherAlphaBlendCommand command = new FeatherAlphaBlendCommand();
      command.DestinationRectangle = new LeadRect(0, 0, sourceImage.Width, sourceImage.Height);
      command.MaskImage = sourceImage.CreateAlphaImage();
      command.SourceImage = sourceImage;
      command.SourcePoint = new LeadPoint(0, 0);
      command.Run(backgroundImage);
      codecs.Save(backgroundImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);
   }

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

[TestMethod]
public async Task FeatherAlphaBlendCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage backgroundImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));
   srcFileName = @"Assets\LittleGFlyingAlpha.png";
   loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage sourceImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   FeatherAlphaBlendCommand command = new FeatherAlphaBlendCommand();
   command.DestinationRectangle = LeadRectHelper.Create(0, 0, sourceImage.Width, sourceImage.Height);
   command.MaskImage = sourceImage.CreateAlphaImage();
   command.SourceImage = sourceImage;
   command.SourcePoint = LeadPointHelper.Create(0, 0);
   command.Run(backgroundImage);
   //Save as BMP
   string destFileName = @"result.bmp";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(backgroundImage, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);
}

public void FeatherAlphaBlendCommandExample(RasterImage image, RasterImage maskImage, RasterImage sourceImage, Stream outStream)
{
   FeatherAlphaBlendCommand command = new FeatherAlphaBlendCommand();
   command.DestinationRectangle = new LeadRect(0, 0, image.Width / 2, image.Height / 2);
   command.MaskImage = maskImage;
   command.SourcePoint = new LeadPoint(image.Width / 2, image.Height / 2);
   command.SourceImage = sourceImage;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
   maskImage.Dispose();
   sourceImage.Dispose();
}

Public Sub FeatherAlphaBlendCommandExample(ByVal image As RasterImage, ByVal maskImage As RasterImage, ByVal sourceImage As RasterImage, ByVal outStream As Stream)
   Dim command As FeatherAlphaBlendCommand = New FeatherAlphaBlendCommand()
   command.DestinationRectangle = New LeadRect(0, 0, image.Width / 2, image.Height / 2)
   command.MaskImage = maskImage
   command.SourcePoint = New LeadPoint(image.Width / 2, image.Height / 2)
   command.SourceImage = sourceImage
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
   maskImage.Dispose()
   sourceImage.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

FeatherAlphaBlendCommand Members
Leadtools.ImageProcessing.Effects Namespace
Introduction to Image Processing With LEADTOOLS
CombineCommand Class
AlphaBlendCommand Class
TextureAlphaBlendCommand Class
Leadtools.ImageProcessing.SpecialEffects.BricksTextureCommand
Leadtools.ImageProcessing.SpecialEffects.CanvasCommand
DisplacementCommand Class
Leadtools.ImageProcessing.SpecialEffects.FragmentCommand
Leadtools.ImageProcessing.SpecialEffects.VignnetCommand