public class SetAlphaValuesCommand : RasterCommand
@interface LTSetAlphaValuesCommand : LTRasterCommand
public class SetAlphaValuesCommand extends RasterCommand
public ref class SetAlphaValuesCommand : public RasterCommand
class SetAlphaValuesCommand(RasterCommand):
This command only works with images that are 32 or 64-bit bits per pixel.
This example will load an image, convert it to 32-bit/pixel and then set the alpha values to half the maximum allowed
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
public void SetAlphaValuesCommandExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "SetAlphaValuesCommand.bmp");
// Load the source image from disk
RasterImage image = codecs.Load(srcFileName);
// Convert the image to 32-bits/pixel
ColorResolutionCommand colorResolution = new ColorResolutionCommand(
ColorResolutionCommandMode.InPlace,
32,
RasterByteOrder.Bgr,
RasterDitheringMethod.None,
ColorResolutionCommandPaletteFlags.None,
null);
colorResolution.Run(image);
Assert.IsTrue(image.BitsPerPixel == 32);
// Set the alpha values
SetAlphaValuesCommand setAlphaValues = new SetAlphaValuesCommand();
setAlphaValues.Alpha = 128;
setAlphaValues.Run(image);
// Save the image back to disk
codecs.Save(image, destFileName, RasterImageFormat.Bmp, 32);
// Clean Up
image.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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