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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