W3C home > Mailing lists > Public > www-svg@w3.org > November 2013

x and y in the turbulence C code

From: Paul LeBeau <paul.lebeau@gmail.com>
Date: Mon, 18 Nov 2013 12:54:16 +1300
Message-ID: <CACfsppCUOF_PcWzM2p_0ea+D0BN8Zwojwd7he05+By2-t2VKgQ@mail.gmail.com>
To: www-svg <www-svg@w3.org>
In the C code provided for the feTurbulence filter primitive, the
turbulence() function takes an x,y coord (in point[0] and point[1]).
 However it is perhaps not clear what coordinate space those coordinates
are defined in.

If it is supposed to be in the "coordinate system established by attribute
‘primitiveUnits’ on the <filter> element.", then should a note to that
effect be added to the description of feTurbulence?

>From my experiments, there does seem to be some inconsistency in how
renderers choose the origin and scale of x & y.

Received on Sunday, 17 November 2013 23:55:04 UTC

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