>Is this what you had in mind : http://leunen.d.free.fr/prog-blur.svg ? Yes, it is an approximation of a real progressive blur. But not perfect, and it cannot be achieved with a filter
[Agreed; and yes that is what I had in mind.] >Here is another approximation on the x-axis "blur" only : http://leunen.d.free.fr/progr-blur2.svg. The drawback of this workaround is to be non-scalable, a pity for *S*vg. [this link seems to be broken] >So, I'm really stuck I guess. I have to hope that the svg-ig will convince the wg to add this feature to svg 1.2. (thanks for forwarding) [joining the svg-ig would be one way to help in the convincing J] >Speaking of new feature, and to avoid that the filter module misses some (features), I wonder how this kind of effect would make sense : ><script> function myEffect(in, x, y) { // compute and return the RGBA color // of the destination pixel, // with full access to the source raster (in) } </script> ><feCustom in="SourceGraphic" function="myEffect" /> >This would allow me to program my own progressive blur, skew,... or any other crazy stuffs that come in my mind. "in" would be an object that gives access to the rgba colors of the input pixels. "x" and "y", the coordinates of the target pixel. Maybe other parameters would be useful, but i can't think of any others. It would make the filter modul turing-complete. What do you think ? Does it make any sense ? If it does, should I forward this to the swg-wg... [For some years now, the request for access to pixel values in SVG has come up. [1],[2],[3]. Occasionally, I've heard (maybe from the HTML WG folks) that there are security reasons for not allowing access to pixel values in web pages. I don't really know why there would be, since one could use a same-domain policy to prevent any mischief it seems. I think the presentation of a compelling set of use cases might be what is needed. Maybe some of the implementers could comment? One of the things I think would be very handy and useful is to have a bitmap to vectorization filter (either implemented by the browser) or accessible through script. I would like to be able to take a bitmap and a few parameters like smoothness and difference-threshold as input and receive as output a series of curves (like <path>s) representing a contour (such as discussed in [4] ). Inkscape and Adobe Illustrator and Adobe Streamline, as well as NIH image all have those abilities to some degree. The ability to make on-the-fly animated sequences from such vectorizations of bitmaps done client-side, would extend our power greatly. It could also be quite practical when it comes to data sensing in the field. Being able to bitblt rectangles of imagery around the screen (as in [3]) might save lots of memory in making jig-saw puzzles, and this also would involve some access to pixel value. Knowing how far pixels have actually moved in an <feDisplacementMap> would also be handy. In general, just being able to do client-side image analysis would be handy, and I think I remember hearing that access to client side images through something like <input type=file> is being contemplated within SVG??? That would ultimately improve security concerns it seems since right now the web app has to upload bitmaps to a server (through who knows what intermediaries enroute) rather than allowing direct access by the client. <reco> David] [1] http://tech.groups.yahoo.com/group/svg-developers/message/52310 [2] http://tech.groups.yahoo.com/group/svg-developers/message/53522 [3] http://tech.groups.yahoo.com/group/svg-developers/message/53849 [4] http://srufaculty.sru.edu/david.dailey/svg/Spec.html [Non-text portions of this message have been removed] ------------------------------------ ----- To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ----Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
