Fwd: another filter to consider?

Forwarding to FXTF list, since we are now working on filters as a joint 
SVG-CSS project.

-------- Original Message --------
Subject:  another filter to consider?
Resent-Date:  Sat, 16 Apr 2011 15:57:01 +0000
Resent-From:  www-svg@w3.org
Date:  Sat, 16 Apr 2011 11:53:55 -0400
From:  David Dailey <ddailey@zoominternet.net>
To:  <www-svg@w3.org>



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.

Regards

David

Received on Saturday, 16 April 2011 17:08:09 UTC