# BitmapData adding alphas

**URL:** <https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391>\
**Category:** flash\
**Created:** [June 15, 2008, 3:10pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391 "2008-06-15T15:10:19Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![xenel](https://avatars.discourse-cdn.com/v4/letter/x/bbe5ce/32.png) [@xenel](https://forum.kirupa.com/u/xenel)\
**Post date:** [June 15, 2008, 3:10pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391/1 "2008-06-15T15:10:19Z")

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Hi guys,  
I am trying to draw multiple transparent rectangles on top of each other. Unfortunately Flash never adds up my alpha values but replaces them.  
For example when I draw one rectangle with say a 0x0F alpha with drawRect and another one with the same alpha on top I don’t get a 0x1E alpha but a 0x0F alpha.  
Any Ideas?

Regards,  
xenel

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**Author:** ![xenel](https://avatars.discourse-cdn.com/v4/letter/x/bbe5ce/32.png) [@xenel](https://forum.kirupa.com/u/xenel)\
**Post date:** [June 15, 2008, 3:46pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391/2 "2008-06-15T15:46:10Z")

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Doesn’t matter anymore, copyPixels now does what I want. Bitmap Data needs some serious drawing tools like the graphics class.

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**Author:** ![Dom\_1](https://avatars.discourse-cdn.com/v4/letter/d/df788c/32.png) [@Dom\_1](https://forum.kirupa.com/u/Dom_1)\
**Post date:** [June 15, 2008, 3:56pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391/3 "2008-06-15T15:56:43Z")

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try out processing…

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**Author:** ![McGuffin](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/mcguffin/32/408_2.png) [@McGuffin](https://forum.kirupa.com/u/McGuffin)\
**Post date:** [June 15, 2008, 4:09pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391/4 "2008-06-15T16:09:49Z")

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[QUOTE=Dom\_;2343115]try out processing…[/QUOTE]

That’s hardly a solution.

Glad to hear you figured it out, xenel

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**Author:** ![Dom\_1](https://avatars.discourse-cdn.com/v4/letter/d/df788c/32.png) [@Dom\_1](https://forum.kirupa.com/u/Dom_1)\
**Post date:** [June 15, 2008, 4:14pm UTC](https://forum.kirupa.com/t/bitmapdata-adding-alphas/263391/5 "2008-06-15T16:14:11Z")

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yeah i know, i just meant that processing is, in my opinion, better when it comes to bitmaps