SetAlphaValuesCommand Class (original) (raw)
Summary
Fills the image alpha values, while preserving the other image components.
Syntax
C#
Objective-C
C++/CLI
Java
Python
@interface LTSetAlphaValuesCommand : LTRasterCommand public class SetAlphaValuesCommand extends RasterCommand class SetAlphaValuesCommand(RasterCommand): Example
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";
}
Leadtools Assembly