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• ActionScript, How to

  How To Make a BitmapData From a DisplayObject/UIComponent

  Andrei Ionescu | 20.08.08 | Permalink | 6 Comments

  Today I needed to found a way to create bitmap data object from a display object. I found a solution in Flex Cookbook (http://www.adobe.com/cfusion/communityengine/index.cfm?event=showdetails&productId=2&postId=1682) and having this I improved it and made it simpler.
  The code follows…

  public function makeBitmap(myDO:DisplayObject):BitmapData
  {
  var myBD:BitmapData = new BitmapData(myDO.width, myDO.height);
  myBD.draw(myDO);
  [...]

• ActionScript

  Retrieving channels from a 32-bit color

  Andrei Ionescu | 24.10.07 | Permalink | 2 Comments

  To isolate the color channels and alpha channel from a 32-bit color we use shifting and bitwise AND operator.

  var colorValue:uint = 0xFFFFCC99;
   
  // Isolate Alpha channel
  var alpha:uint = ( colorValue << 24 ) & 0xFF;
  // Isolate Red channel
  var red:uint = ( colorValue << 16 ) & 0xFF;
  // Isolate Green channel
  var green:uint = ( colorValue << 8 [...]

FLEX{er}

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FLEX{er} is a tool where information regarding Flex & Actionscript programming languages is gathered starting from general info like books and resources and going to examples of actionscript for specific problems. [...]

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comments

• Nami: Thank you !!
• Gert-Jan van der Wel: It seems to work when you pass in the whole path of the class. var myClass:Class =...
• Andrei Ionescu: Cornelius, thanks for your fix.
• Cornelius: In the end, you forgot the case of a right-aligned image: if (getStyle("horizontalAlign") == "right")...
• Joseph: Interesting observation… and even if HTML5 reaches that, Flash would be peaking with some 3D stuff or...