W3C home > Mailing lists > Public > www-style@w3.org > September 2009

Re: Drop-Shadow proposal

From: Brad Kemper <brad.kemper@gmail.com>
Date: Mon, 14 Sep 2009 10:24:32 -0700
Cc: www-style list <www-style@w3.org>
Message-Id: <A969BEBA-1CEF-45AC-977A-B690CCA71E6F@gmail.com>
To: Andrew Fedoniouk <news@terrainformatica.com>

On Sep 14, 2009, at 8:49 AM, Brad Kemper wrote:

>> I am not sure I understand physics here. See:
>> 1) For shadow purposes that logo is treated as if it is transparent  
>> (punched) so it does not cast the shadow.
>> 2) But at the same time it is rendered as if it is non-transparent.
> With inner shadows, wherever there is solid color, it renders as  
> though that color is on a surface below a transparent cut-out.  
> Because the logo is solid and opaque, you see the unobscured color  
> of it on that lower surface. Wherever there is transparency in the  
> original image, you get the effect of a surface floating above the  
> lower surface, casting a shadow on whatever colors were not  
> transparent.
>> Seems like contradictory for me.

This might help show what is going on a little more clearly:

Received on Monday, 14 September 2009 17:25:21 UTC

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