SourcePoint Property (AlphaBlendCommand)

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

public LeadPoint SourcePoint {get; set;}

'Declaration
 
Public Property SourcePoint As LeadPoint

'Usage
 
Dim instance As AlphaBlendCommand
Dim value As LeadPoint
 
instance.SourcePoint = value
 
value = instance.SourcePoint

public LeadPoint SourcePoint {get; set;}

 get_SourcePoint();
 set_SourcePoint(value);

public:
property LeadPoint SourcePoint {
   LeadPoint get();
   void set (    LeadPoint value);
}

Property Value

LeadPoint structure that contain the origin of the source rectangle. the Width and Height are the same Width and Height for the destination rectangle.

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

Public Sub SourcePointPropertyExample()
   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
   command.DestinationRectangle = New LeadRect(Left, Top, Width, Height)
   command.SourceImage = srcImage
   command.SourcePoint = New LeadPoint(0, 0)
   command.Opacity = 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

public void SourcePointPropertyExample()
   {
      // 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();
      // Combine srcImage with image, with half opacity.
      //command.DestinationRectangle = new LeadRect(image.Width / 2 - srcImage.Width / 2, image.Height / 2 - srcImage.Height / 2, image.Width / 2 + srcImage.Width / 8, image.Height / 2 + srcImage.Height / 8);
      command.DestinationRectangle = new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height);
      command.SourceImage = srcImage;
      command.SourcePoint = new LeadPoint(0, 0);
      command.Opacity = 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";
}

[TestMethod]
public async Task SourcePointPropertyExample()
{
   // 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();
   // Combine srcImage with image, with half opacity.
   //command.DestinationRectangle = LeadRectHelper.Create(image.Width / 2 - srcImage.Width / 2, image.Height / 2 - srcImage.Height / 2, image.Width / 2 + srcImage.Width / 8, image.Height / 2 + srcImage.Height / 8);
   command.DestinationRectangle = LeadRectHelper.Create(image.Width / 8, image.Height / 8, image.Width, image.Height);
   command.SourceImage = srcImage;
   command.SourcePoint = LeadPointHelper.Create(0, 0);
   command.Opacity = 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);

}

public void SourcePointPropertyExample(RasterImage image, RasterImage srcImage, Stream outStream)
{
   // Prepare the command
   AlphaBlendCommand command = new AlphaBlendCommand();
   // Combine srcImage with image, with half opacity.
   //command.DestinationLeadRect = new LeadRect(image.Width / 2 - srcImage.Width / 2, image.Height / 2 - srcImage.Height / 2, image.Width / 2 + srcImage.Width / 8, image.Height / 2 + srcImage.Height / 8);
   command.DestinationRectangle = new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height);
   command.SourceImage = srcImage;
   command.SourcePoint = new LeadPoint(0, 0);
   command.Opacity = 128;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
   srcImage.Dispose();
}

Public Sub SourcePointPropertyExample(ByVal image As RasterImage, ByVal srcImage As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As AlphaBlendCommand = New AlphaBlendCommand()
   ' Combine srcImage with image, with half opacity.
   'command.DestinationLeadRect = _ 
   ' new LeadRect(image.Width / 2 - srcImage.Width / 2, image.Height / 2 - srcImage.Height / 2, image.Width / 2 + srcImage.Width / 8, image.Height / 2 + srcImage.Height / 8);
   command.DestinationRectangle = New LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height)
   command.SourceImage = srcImage
   command.SourcePoint = New LeadPoint(0, 0)
   command.Opacity = 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: 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

AlphaBlendCommand Class
AlphaBlendCommand Members