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Re: Shadows vs. layout

From: Bert Bos <bert@w3.org>
Date: Wed, 5 Aug 2009 18:02:15 +0200
To: W3C style mailing list <www-style@w3.org>
Message-Id: <200908051802.15261.bert@w3.org>
I didn't see the following argument mentioned yet. (Sorry if somebody 
did and I missed it.)

The size of a shadow is unpredictable when the shadow is blurry. We 
don't define the precise algorithm for the blur, but I imagine the 
intensity of the shadow diminishes with something approximating a 
Gaussian curve. At some point, the shadow intensity will be less than 
can be expressed within the color depth of the screen, but where that 
point is is not easily known. The page author certainly can't predict 

  Bert Bos                                ( W 3 C ) http://www.w3.org/
  http://www.w3.org/people/bos                               W3C/ERCIM
  bert@w3.org                             2004 Rt des Lucioles / BP 93
  +33 (0)4 92 38 76 92            06902 Sophia Antipolis Cedex, France
Received on Wednesday, 5 August 2009 16:02:52 UTC

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