W3C home > Mailing lists > Public > www-svg@w3.org > April 2011

another filter to consider?

From: David Dailey <ddailey@zoominternet.net>
Date: Sat, 16 Apr 2011 11:53:55 -0400
To: <www-svg@w3.org>
Message-ID: <001801cbfc4e$7d796ef0$786c4cd0$@net>
Internet Explorer/ HTML/CSS has had, for at least 10 years, something
present, I think, in versions 5 through 9, a wave filter. See


http://srufaculty.sru.edu/david.dailey/javascript/ani/waves.html .


If you don't have IE, basically, it allows sinusoidal distortion of an image
(until today I always used jpgs but today I discovered that it also works in
IE9 with <img src="file.svg">, though the wave distortion is applied to a
pixel-based rendition of the SVG file). It's not quite as flexible, as I
recall, as the bivariate sinusoidal wave function in Adobe Photoshop (that
allows arbitrarily many generators to be added to the transform), but it is
a step in the right direction!


Anyhow, it is more what, in SVG, we would call a "transform" than a
"filter", but this sort of transform as well as projections (conic,
spherical, and so forth) would be nice additions as well. I think the
underlying math is probably simpler than the non-affine transforms being
discussed for SVG 2.0. 


Applications are, as always,  artistic, scientific and geographic.



Received on Saturday, 16 April 2011 15:54:22 UTC

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