- From: <kitfox@golden.net>
- Date: Wed, 6 Oct 2010 02:56:59 -0400
- To: "Doug Schepers" <schepers@w3.org>
- Cc: kitfox@golden.net, www-svg@w3.org
Thanks! Is there a way to add my name to the tracking system? Mark > Hi, Mark- > > Thanks for the proposal; this is the right place for proposals like this. > > We discussed this briefly during our SVG Working Group telcon, and will > discuss it more in depth in the context of the filters module and SVG2. > I have raised this as issue-2380 in our issue tracker: > http://www.w3.org/Graphics/SVG/WG/track/issues/2380 > > Right now, our plate is full, but we will probably pick this up more > seriously in a couple of months. We'll want to talk with you further > about it at that time, but in the meantime, we're interested in hearing > feedback from you and others on this topic on this mailing list. > > Regards- > -Doug Schepers > W3C Team Contact, SVG and WebApps WGs > > kitfox@golden.net wrote (on 10/5/10 9:30 AM): >> I'd like to propose adding an<feColorRamp> filter element to SVG. This >> is a simple filter that takes selects a channel from an input image and >> uses the intensity of a particular pixel to lookup a color value in a >> gradient. >> >> Reasons: >> >> At the moment, the SVG filtering system provides ways to perturb images >> in >> their domain (feDisplacementMap), but has only limited ability to remap >> their range (feColorMatrix is probably the best existing option). To >> use >> fractal noise and turbulence to produce natural effects such as fire, >> clouds, marble or wood, the intensity of the noise needs to be mapped to >> a >> color ramp (gradient). (See Ken Perlin's 'Making Noise' >> http://www.noisemachine.com/talk1/) >> >> Proposal: >> >> A new filter element should be added to svg called<feColorRamp>. It >> would have the following attributes: >> >> in: "SourceGraphic | SourceAlpha | BackgroundImage | BackgroundAlpha | >> FillPaint | StrokePaint |<filter-primitive-reference>" >> - Choose input image >> >> channelSelector: "R | G | B | A" >> - Determines channel of input image that is remapped >> >> ramp:<gradient> >> - The gradient that is used for remapping intensity values in the input >> channel >> >> >> Please let me know if you think this is a good idea, and where I should >> submit this proposal if this list is not the best place. >> >> >> Mark McKay >> > > > ---------------------------- Powered by Execulink Webmail http://www.execulink.com/
Received on Wednesday, 6 October 2010 06:57:54 UTC