- From: Doug Schepers <schepers@w3.org>
- Date: Sat, 16 Apr 2011 13:08:06 -0400
- To: "public-fx@w3.org" <public-fx@w3.org>, ddailey <ddailey@zoominternet.net>
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