 | | | Color : Transform.aa != _alpha | Color : Transform.aa != _alpha
2004-02-17 - By Santiago Esperanza
Back
alpha is handled within 256 values in a range 0-255. Though the Color
transform and alpha properties work in a range of 0-100, the end resulting
alpha will be based on 0-255. In returning that to a 0-100 range, you 'll
see a difference in value from what you assigned it from the conversion.
-se
>From: "Ted Patrick " <ted@(protected) >
>Reply-To: flashcoders@(protected)
>To: <flashcoders@(protected) >
>Subject: [Flashcoders] Color : Transform.aa != _alpha
>Date: Tue, 17 Feb 2004 10:51:16 -0500
>
>I am working with the color object and weird things are happending when you
>compare the transform aa value and the _alpha values. They should be
>identical but they are not. The values seem to be identical at 0, 25, 75,
>100 but inbetween, they clearly off the whole number values.
>
>Here is an example:
>
>//Box is a MovieClip on Stage
>
>A = new Color(Box)
>A.setRGB(0xFF0000) //turns the box red
>Box._alpha = 20
>Trace(a.getTransform().aa) // 19.921875 where it should be 20!
>
>Box._alpha = 50
>Trace(a.getTransform().aa) // 50 works fine!
>
>Box._alpha = 60
>Trace(a.getTransform().aa) // 59.765625 where it should be 60!
>
>Box._alpha = 2
>Trace(a.getTransform().aa) // 1.953125 where it should be 2!
>
>Box._alpha = 95
>Trace(a.getTransform().aa) // 94.921875 where it should be 95!
>
>Box._alpha = 100
>Trace(a.getTransform().aa) // 100 works fine!
>
>Weird thing is if you do the opposite and use setTransform you get a
>different alpha values in the movieClip itself. This looks like a player
>error.
>
>Player WIN 7,0,14,0
>
>Anyone seen this before?
>
>Thanks,
>
>Ted ;)
>
>
>
>
>
>
>
>Theodore E. Patrick
>PowerSDK - Code for a distributed world
>http://www.powersdk.com
>
>
>
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