Sets all bits to 0 in the specified image, making it a black image.
public class ClearCommand : RasterCommand
Public Class ClearCommand
Inherits RasterCommand
@interface LTClearCommand : LTRasterCommand
public class ClearCommand extends RasterCommand
public ref class ClearCommand : public RasterCommand
Sets all bits to 0, in the specified image. If the image has a palette, all pixels will be the color of the first palette entry.
For more information, refer to Introduction to Image Processing With LEADTOOLS.
This example will clear an image before saving it back to disk.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using LeadtoolsExamples.Common;
public void ClearCommandExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
string destFileName = Path.Combine(ImagesPath.Path, "Image1_clear.bmp");
// Load the source image from disk
RasterImage image = codecs.Load(srcFileName);
// Clear the image
ClearCommand cmd = new ClearCommand();
cmd.Run(image);
// Save the image to disk
codecs.Save(
image,
destFileName,
RasterImageFormat.Bmp,
24);
// Clean up
image.Dispose();
codecs.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Public Sub ClearCommandExample()
Dim codecs As RasterCodecs = New RasterCodecs()
Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_clear.bmp")
' Load the source image from disk
Dim image As RasterImage = codecs.Load(srcFileName)
' Clear the image
Dim cmd As ClearCommand = New ClearCommand()
cmd.Run(image)
' Save the image to disk
codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)
' Clean up
image.Dispose()
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Media;
public void ClearCommandExample(RasterImage image, Stream destStream)
{
RasterCodecs codecs = new RasterCodecs();
// Clear the image
ClearCommand cmd = new ClearCommand();
cmd.Run(image);
// Save the image to disk
codecs.Save(
image,
destStream,
RasterImageFormat.Bmp,
24);
// Clean up
image.Dispose();
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Media
Public Sub ClearCommandExample(ByVal image As RasterImage, ByVal destStream As Stream)
Dim codecs As RasterCodecs = New RasterCodecs()
' Clear the image
Dim cmd As ClearCommand = New ClearCommand()
cmd.Run(image)
' Save the image to disk
codecs.Save(image, destStream, RasterImageFormat.Bmp, 24)
' Clean up
image.Dispose()
End Sub
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