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Merge pull request #1184 from darkfeline/add-doc

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Clarify docstring about mask values [ci skip]
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Hugo 2015-05-05 19:29:04 +03:00
commit f21b45c976
1 changed files with 4 additions and 4 deletions
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PIL/Image.py
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@ -1288,11 +1288,11 @@ class Image:
images (in the latter case, the alpha band is used as mask). images (in the latter case, the alpha band is used as mask).
Where the mask is 255, the given image is copied as is. Where Where the mask is 255, the given image is copied as is. Where
the mask is 0, the current value is preserved. Intermediate the mask is 0, the current value is preserved. Intermediate
values can be used for transparency effects. values will mix the two images together, including their alpha
channels if they have them.
Note that if you paste an "RGBA" image, the alpha band is See :py:meth:`~PIL.Image.Image.alpha_composite` if you want to
ignored. You can work around this by using the same image as combine images with respect to their alpha channels.
both source image and mask.
:param im: Source image or pixel value (integer or tuple). :param im: Source image or pixel value (integer or tuple).
:param box: An optional 4-tuple giving the region to paste into. :param box: An optional 4-tuple giving the region to paste into.