FeatherAlphaBlendCommand Class

Summary

Combines image data from two images with feathering. The two images can be combined with variable opacity applied by specifying the region of a fade mask image.

Syntax

Objective-C

C++

Java

publicclassFeatherAlphaBlendCommand :RasterCommand

PublicClassFeatherAlphaBlendCommandInheritsRasterCommand

@interfaceLTFeatherAlphaBlendCommand : LTRasterCommand

publicclassFeatherAlphaBlendCommandextendsRasterCommand

publicref classFeatherAlphaBlendCommand :publicRasterCommand

Remarks

To combine two images with a fixed opacity, use theAlphaBlendCommand.
The FeatherAlphaBlendCommand achieves feathering between two images by using variable opacity values, obtained from the fade mask referenced byMaskImage. Use theMaskSourcePointto specify a region of the mask image, these values are the coordinates of the origin of the mask rectangle.
To create an image that contains a fade mask, useFadedMaskCommandcommand.
This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in theDocument/Medicaltoolkits.
This command does not support signed data images.
This command does not support 32-bit grayscale images.

For more information, refer toIntroduction to Image Processing With LEADTOOLS.

Example

Run theFeatherAlphaBlendCommandon an image.

usingLeadtools;usingLeadtools.Codecs;usingLeadtools.ImageProcessing.Effects;publicvoidFeatherAlphaBlendCommandExample(){// Load an imageRasterCodecs codecs =newRasterCodecs();RasterImage backgroundImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"Image1.cmp"));RasterImage sourceImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"LittleGFlyingAlpha.png"), 32, CodecsLoadByteOrder.Bgr, 1, 1);FeatherAlphaBlendCommand command =newFeatherAlphaBlendCommand();command.DestinationRectangle =newLeadRect(0, 0, sourceImage.Width, sourceImage.Height);command.MaskImage = sourceImage.CreateAlphaImage();command.SourceImage = sourceImage;command.SourcePoint =newLeadPoint(0, 0);command.Run(backgroundImage);codecs.Save(backgroundImage, Path.Combine(LEAD_VARS.ImagesDir,"Result.jpg"), RasterImageFormat.Jpeg, 24);}staticclassLEAD_VARS{publicconststringImagesDir =@"C:\LEADTOOLS21\Resources\Images";}

ImportsLeadtoolsImportsLeadtools.CodecsImportsLeadtools.ImageProcessing.EffectsPublicSubFeatherAlphaBlendCommandExample()' Load an imageDimcodecsAsRasterCodecs =NewRasterCodecs()DimbackgroundImageAsRasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"Image1.cmp"))DimsourceImageAsRasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"LittleGFlyingAlpha.png"), 32, CodecsLoadByteOrder.Bgr, 1, 1)DimcommandAsFeatherAlphaBlendCommand =NewFeatherAlphaBlendCommand()command.DestinationRectangle =NewLeadRect(0, 0, sourceImage.Width, sourceImage.Height)command.MaskImage = sourceImage.CreateAlphaImage()command.SourceImage = sourceImagecommand.SourcePoint =NewLeadPoint(0, 0)command.Run(backgroundImage)codecs.Save(backgroundImage, Path.Combine(LEAD_VARS.ImagesDir,"Result.jpg"), RasterImageFormat.Jpeg, 24)EndSubPublicNotInheritableClassLEAD_VARSPublicConstImagesDirAsString="C:\LEADTOOLS21\Resources\Images"EndClass