HalfToneCommand Constructor(HalfToneCommandType,Int32,Int32,RasterImage)

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

public HalfToneCommand( 
   HalfToneCommandType type,
   int angle,
   int dimension,
   RasterImage userDefinedImage
)

'Declaration
 
Public Function New( _
   ByVal type As HalfToneCommandType, _
   ByVal angle As Integer, _
   ByVal dimension As Integer, _
   ByVal userDefinedImage As RasterImage _
)

'Usage
 
Dim type As HalfToneCommandType
Dim angle As Integer
Dim dimension As Integer
Dim userDefinedImage As RasterImage
 
Dim instance As New HalfToneCommand(type, angle, dimension, userDefinedImage)

public HalfToneCommand( 
   HalfToneCommandType type,
   int angle,
   int dimension,
   RasterImage userDefinedImage
)

function HalfToneCommand( 
   type ,
   angle ,
   dimension ,
   userDefinedImage 
)

public:
HalfToneCommand( 
   HalfToneCommandType type,
   int angle,
   int dimension,
   RasterImage^ userDefinedImage
)

Parameters

type: Value that indicates the type of halftoning to perform.
angle: The angle of rotation, expressed in hundredths of degrees. A value of 0 produces a horizontal halftone pattern. This parameter specifies the number of degrees to change the pattern. Positive values rotate the pattern clockwise; negative values rotate the pattern counterclockwise. This value is ignored if the selected halftone pattern is HalfToneCommandType.Rectangle, HalfToneCommandType.Circle or HalfToneCommandType.Random or HalfToneCommandType.UserDefined.
dimension: Value that indicates the size of the grain. This value is ignored if the selected halftone pattern is HalfToneCommandType.View or HalfToneCommandType.Print. If the pattern is not HalfToneCommandType.View or HalfToneCommandType.Print, dimension should be >= 1. If this parameter is < 1 this command will return ERROR_INV_PARAMETER.
userDefinedImage: List of images that will be used in half toning if the HalfToneCommandType.UserDefined option is selected.

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

Public Sub HalfToneConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Try
      Dim images() As RasterImage
      ReDim images(1)
      images(0) = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\Ulay3.bmp"), 24, CodecsLoadByteOrder.Bgr, 1, 1)
      images(1) = images(0)
      images(0).AddPage(images(1))
      Dim command As HalfToneCommand = New HalfToneCommand(HalfToneCommandType.UserDefined, 0, 1, images(0))
      'Halftone the image.
      command.Run(leadImage)
   Catch ex As Exception
      MessageBox.Show(ex.Message, "HalfToneTest", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
   End Try

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void HalfToneConstructorExample()
   {
      // 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[] images = new RasterImage[2];
      images[0] = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Ulay3.bmp"), 24, CodecsLoadByteOrder.Bgr, 1, 1);
      images[1] = images[0];
      images[0].AddPage(images[1]);
      HalfToneCommand command = new HalfToneCommand(HalfToneCommandType.UserDefined, 0, 1, images[0]);
      // Halftone the image.
      command.Run(image);

   }

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

function HalfToneConstructorExample()
{
   var codecs = new Leadtools.Codecs.RasterCodecs();
   codecs.throwExceptionsOnInvalidImages = true;

   // Load the image
   var srcFileName = "Assets\\Image1.cmp";
   var sourceImage;
   return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile));
   }).then(function (image) {
      sourceImage = image;
      srcFileName = "Assets\\Ulay1.bmp";
      return Tools.AppInstallFolder().getFileAsync(srcFileName);
   }).then(function (loadFile) { 
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile),24, Leadtools.Codecs.CodecsLoadByteOrder.bgr, 1, 1);
   }).then(function (image) {
      var images = new Array();
      images[0] = image;
      images[1] = images[0];
      images[0].addPage(images[1]);
      // Prepare the command
      with (Leadtools.ImageProcessing.Core) {
         var command = new HalfToneCommand(HalfToneCommandType.userDefined, 0, 1, images[0]);
         // Halftone the image.
         command.run(sourceImage);
      }
   });
}

[TestMethod]
public async Task HalfToneConstructorExample()
{
   // 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
   RasterImage[] images = new RasterImage[2];

   srcFileName = @"Assets\Ulay1.bmp";
   loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   images[0] = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile),24, CodecsLoadByteOrder.Bgr, 1, 1);
   images[1] = images[0];
   images[0].AddPage(images[1]);
   HalfToneCommand command = new HalfToneCommand(HalfToneCommandType.UserDefined, 0, 1, images[0]);
   // Halftone the image.
   command.Run(image);

}

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

HalfToneCommand Class
HalfToneCommand Members
Overload List