formatlos

Martin Rädlinger

3 Responses (Add Your Comment)

1. Michael Welford September 9, 2008

   at 4:17 am

   Can you cut the mask and the display object up into tiles, apply the mask parts to the separate tiles and then write it back to the bitmapdataunlimited?

2. Martin September 9, 2008

   at 9:19 am

   slicing up the display object isn’t very handy I guess, but should work.

   If I get you right you want to apply a mask directly to the BitmapData in order to have a transparent Bitmap. This will work with BitmapDataUnlimited without the slicing.

3. Martin September 9, 2008

   at 9:31 am

   example:

    
   // bitmapDataImage -> your image
   // bitmapDataMask -> your mask
    
   // merge image layer with mask layer:
   // the transparent regions in the mask Bitmap will be 
   // transparent in the result image as well
   bitmapDataImage.draw( new Bitmap(bitmapDataMask), 
                         new Matrix(), 
                         null, 
                         BlendMode.ALPHA, 
                         bitmapDataMask.rect);

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