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How to get a pixel's x,y coordinate color from an image?
...lData = canvas.getContext('2d').getImageData(event.offsetX, event.offsetY, 1, 1).data;
Because you are only grabbing one pixel, pixelData is a four entry array containing the pixel's R, G, B, and A values. For alpha, anything less than 255 represents some level of transparency with 0 being fully ...
My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
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edited Sep 26 '12 at 20:10
leggetter
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How can you get the Manifest Version number from the App's (Layout) XML variables?
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edited May 23 '17 at 12:18
Community♦
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answered Dec 17 '10 at 14:00
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Why does my application spend 24% of its life doing a null check?
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The tree is massive
By far the most expensive thing a processor ever does is not executin...
How can I get the SQL of a PreparedStatement?
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iPhone - Grand Central Dispatch main thread
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edited Feb 21 '13 at 12:39
swiftBoy
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How do I make XAML DataGridColumns fill the entire DataGrid?
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catch exception that is thrown in different thread
One of my method ( Method1 ) spawns a new thread.
That thread execute a method ( Method2 ) and during exectution an exception is thrown.
I need to get that exception information on the calling method ( Method1 )
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Difference between single quotes and double quotes in Javascript [duplicate]
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You'll want to use single quotes where you want double quotes to appear inside the string (e.g...