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Editorial Team
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Asked: 2026-06-10T21:13:10+00:00

I am trying to copy the pixels of a bitmap into BitmapData at a

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I am trying to copy the pixels of a bitmap into BitmapData at a transparency of lets say .5 but i can’t seem to find any reference to this anywhere on google or here!

i have my standard copy pixel code

_bitmapData.copyPixels(_bitmaps.vault[BitmapNames.BITMAPNAME], SCREENRECT, _drawPoint, null, null, true);

I can see that the first null value i pass is a BitmapData labelled alphaBitmapData:BitmapData so i’m assuming it has something to do with that, but i cant work it out!

Any help would be appreciated, cheers!

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1 Answer

  1. Editorial Team

    I have accepted Will Kru’s answer as the answer (though only theory based) below is the code used to put the method behind the madness!!

    var alphaBitmap:BitmapData = new BitmapData(width, height, true, toARGB(0x000000, (.5 * 255)));

    _bitmapData.copyPixels(_bitmaps.vault[BitmapNames.BITMAP], _drawRect, _drawPoint, alphaBitmap, null, true);

    toARGB function found here alpha + RGB -> ARGB?

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