public HalfToneCommand(
HalfToneCommandType type,
int angle,
int dimension,
RasterImage userDefinedImage
)
Public Function New( _
ByVal type As HalfToneCommandType, _
ByVal angle As Integer, _
ByVal dimension As Integer, _
ByVal userDefinedImage As RasterImage _
)
- (instancetype)initWithType:(LTHalfToneCommandType)type
angle:(NSInteger)angle
dimension:(NSUInteger)dimension
userDefinedImage:(nullable LTRasterImage *)userDefinedImage
public HalfToneCommand(
HalfToneCommandType type,
int angle,
int dimension,
RasterImage userDefinedImage
)
public:
HalfToneCommand(
HalfToneCommandType type,
int angle,
int dimension,
RasterImage^ userDefinedImage
)
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.
Run the HalfToneCommand on an image.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void HalfToneConstructorExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp"));
// 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].Clone();
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";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub HalfToneConstructorExample()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp"))
' 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
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