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I have two images. One of them is just plain white and has some areas with alpha transparency. It is intended to be a mask for making another image transparent. The other image, full colored and also PNG, has no alpha applied anywhere.
So I want to add...
Started by Thanks on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Starting in Panther Quartz has an alpha only bitmap context that can be used to mask other on alpha only bitmap....
Image has an alpha channel, but it is set to 1 just replace that channel with the alpha from the second image.
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Say I have a collection of strings "123AB", "456CDEF", "789G", "012-HI". How do I find all the strings that are number(1 or more) followed by alpha(1 or more) with no special characters, where the alpha characters are not AB ?
To clarify, the regex applied...
Started by thorncp on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
^\d+(?:a(?:b[....
But I'll leave the answer visible as an example of what won't work .
You want a lookahead assertion: ^[0-9]+(?!AB$)[A-Z]+$ Without look-ahead:
^[0-9]+([B-Z]|A[AC-Z])[A-Z]*$
Edit:
Withdrawn, because this won't match something like 123A .
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Regex to Find Second Char is Alpha up to 5 Alpha Followed by 1 numeral.
Thanks
Answer Snippets (Read the full thread at stackoverflow):
Character is alpha up to 5 following alpha (i.e., total 1 - 6 alpha) final numeric Yes?
Assuming.
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Ask your Facebook Friends
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How do I change the global alpha value of a BufferedImage in Java? (I.E. make every pixel in the image that has a alpha value of 100 have a alpha value of 80)
Started by William on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
This and that works perfect:
public void setAlpha(byte alpha) { alpha %= 0xff; for (int cx=0;cx<obj, cy); int mc = (alpha << 24) | 0x00 ; int newcolor = color & mc; obj_img.setRGB(cx, cy, newcolor); } }
}
where obj_img is....
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How to detect if a PNG image has transparent alpha channel or not using PIL?
img = Image.open('example.png', 'r') has_alpha = img.mode == 'RGBA'
With above code we know whether a PNG image has alpha channel not not but how to get the alpha value?
I didn...
Started by jack on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
# python 2.6+ import operator, itertools def get_alpha_channel(image): "Return....
The img.info is about the image as a whole -- the alpha-value in an RGBA image is per-pixel, so -- the tuple's last value will then be A, the alpha value.
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As we all know, WLS is the number one alliance in Alpha. But, I want to know who you think is the most powerful player.
This isn't based on point totals, or military scores, just a way to mention the best of the best.
Thanks Sanctified for the incredible...
Started by Zach The Wise
Gyrocopter on
, 20 posts
by 14 people.
Answer Snippets (Read the full thread at ikariam):
I too am a WOW....
I think of alliance mates.
Everyone seems to have their flaws.
The greatest power in Alpha is the player with the wisdom to use their wisdom in little ways the most as being the "best" player in the alpha world.
And died.
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I want to draw transparent windows (with alpha channel) on Linux (GTK) and OSX. Is there an API to do that ? Note that I don't want to set a global transparency, the alpha level should be set per pixel.
I'm looking for the same kind of API than the UpdateLayeredWindow...
Started by math on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
I found this code-transparent blue window....
Although the example uses a custom window, you can use is that the standard drop shadow doesn’t interact very well with alpha-blended edges.
Overall alpha, arbitrary alpha can be used.
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I want to know how the glBlendFunc works. For example, i have 2 gl textures, where the alpha is on tex1, i want to have alpha in my final image. Where the color is on tex1, i want the color from tex2 to be.
Started by DavidG on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
The solution was to insist that the artist makes the "action the color means it adds to the texture... .
As Lee pointed out, texture blending is to allow alpha to show up on the framebuffer.
Color ( incl alpha ), to a part of a defined texture.
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I'm trying to add alpha effect for my image. the image is in rounded corner rectangular shape. i know there is attributes to change the alpha in CSS3, but i'm trying to be compliant with the w3c standard, which is still CSS2.
Sorry i didn't state my question...
Started by fei on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Img.transparent{ filter: alpha(opacity=100: alpha(opacity=50); /* internet explorer....
Of course this would require work on hover, note that this won't work in IE6 .
If the image is a PNG , you can include alpha directly in the image.
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I am using 3D textures for volume rendering of raw data. The raw data can be Luminance-Alpha or RGBA.
Currently, I read the raw data and set the alpha value such that the furthest row (or slice)would be opaque (Alpha = 1) and the nearest slice would be...
Started by Aditya on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Sounds like could set a glColor4f with an alpha-component....
This one talks about "per slice alpha weight", which is what I intend to do (look at the pseudocode/
Now, the trick is to re-compute per slice alpha weight as orientation changes.
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