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Re: feTurbulence with filter primitive subregions

From: Robert O'Callahan <robert@ocallahan.org>
Date: Tue, 13 May 2008 10:25:37 -0700
Message-ID: <11e306600805131025t6f5cc4d1y999da01b8f9d614@mail.gmail.com>
To: "Erik Dahlström" <ed@opera.com>
Cc: www-svg <www-svg@w3.org>
On Tue, May 13, 2008 at 2:09 AM, Erik Dahlström <ed@opera.com> wrote:

> 'point' is the point you calculate noise/turbulence for, so I'd expect it
> to be something like (x+sampleOffset,y+sampleOffset) and that x and y are
> changed as you filter each point in the filter primitive subregion.


OK. So 'point' is in a coordinate space whose origin is the top-left corner
of the filter primitive subregion, *not* the filter region. That's what I
was asking.

I think this is not obvious from the spec and should be clarified.

Rob
-- 
"He was pierced for our transgressions, he was crushed for our iniquities;
the punishment that brought us peace was upon him, and by his wounds we are
healed. We all, like sheep, have gone astray, each of us has turned to his
own way; and the LORD has laid on him the iniquity of us all." [Isaiah
53:5-6]
Received on Tuesday, 13 May 2008 17:26:23 GMT

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