Important notice: the development of WideImage 1.0 branch is discontinued.
Please visit
http://wideimage.sourceforge.net for the new version of library and documentation.
This web site will remain accessible to serve as documentation for the old versions of the library.
For help on migration, please refer
to the
migration
guide.
Most recent edit on 2007-07-24 16:05:47 by GasperKozak
Additions:
~- result (wiTrueColorImage): a mask (greyscale true-color image)
This method returns a mask of an image. For transparent images with single-color transparency this is a black and white image with transparent areas marked as black, and non-transparent as white. For alpha-transparent images, strength of grey color (r=g=b) marks the opacity for each pixel, where black is completely transparent and white is completely opaque.
Deletions:
~- result (wiTrueColorImage): a mask greyscale true-color image
This method returns a mask of an image.
For transparent images with single-color transparency this is a black and white image with transparent areas marked as black.
For alpha-transparent images, strength of grey color (r=g=b) marks the opacity for each pixel, where black is completely transparent and white is completely opaque.
Edited on 2007-03-03 12:05:42 by GasperKozak
Additions:
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CategoryDocApi
Deletions:
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Oldest known version of this page was edited on 2007-03-03 12:05:25 by GasperKozak []
Page view:
wiImage::asMask()
See:
List of operations
Signature
wiImage::asMask()
Parameters
- result (wiTrueColorImage): a mask greyscale true-color image
Description
This method returns a mask of an image.
For transparent images with single-color transparency this is a black and white image with transparent areas marked as black.
For alpha-transparent images, strength of grey color (r=g=b) marks the opacity for each pixel, where black is completely transparent and white is completely opaque.
Examples
$img = wiImage::load('/path/to/an/image.png');
$mask = $img->asMask();
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