- From: Chris Lilley <chris@w3.org>
- Date: Mon, 3 May 2010 22:57:52 +0200
- To: public-fx@w3.org
Hello public-fx,
In glorious stereo
http://www.w3.org/2010/05/03-fx-minutes.html
and scratchy mono
CSS-SVG Task Force Teleconference
03 May 2010
[2]Agenda
[2] http://lists.w3.org/Archives/Public/public-fx/2010AprJun/0034.html
See also: [3]IRC log
[3] http://www.w3.org/2010/05/03-fx-irc
Attendees
Present
Shepazu, ed, [IPcaller], anthony, +39.524.9.aaaa, ChrisL,
smfr, +1.617.584.aabb, fantasai, +1.858.655.aacc, plinss_,
al_macdonald, dbaron
Regrets
Tab, Dean
Chair
SV_MEETING_CHAIR
Scribe
Chris
Contents
* [4]Topics
1. [5]Intros
2. [6]'image-fit' vs preserveAspectRatio
3. [7]transitions of CSS images (including gradients)
4. [8]svg/css merged transforms spec
5. [9]harmonizing CSSMatrix and SVGMatrix (2D)
6. [10]next telcon
* [11]Summary of Action Items
_________________________________________________________
<trackbot> Date: 03 May 2010
<smfr> i can't get dialin to work
<shepazu> smfr: the conference code is 26632
<smfr> ah, was looking at the email
<f1lt3r> hey, im in
code today is 26632
<scribe> scribe: Chris
<scribe> ScribeNick: ChrisL
Intros
(people introduce themselves)
<smfr> is al on irc?
'image-fit' vs preserveAspectRatio
[12]http://www.w3.org/mid/25829533.20100331230050@w3.org
[12] http://www.w3.org/mid/25829533.20100331230050@w3.org
<fantasai> ChrisL: There's been a bit of to-and-fro about the naming
of these properties
object-fit: fill | cover | contain
object-position: <bg-pos>
'
<fantasai> ChrisL: That's the most recent proposal from the CSSWG
<f1lt3r> i am al :)
elika: bg-pos allows you to position an image in a box
consistent with background-position in CSS
e.g. top left, 20% 80%
doug: depencdency on box model?
elika: none
... its just the names
erik: read minutes, seem to have had 4 proposals for naming
... would be fine with object-fit and object-position
... liked others better but fine with this one
... fit-position would have been first choice
elika: proposals were in pairs, so what would the other property be
called
erik: fit-scale. ... ok not perfect either
doug: objec t-fit ok with me
chris: ok with these names too
(no objections to proposed names)
resolved: svg will accept the css proposal of object-fit and
object-position
<smfr> sweeping bird poop, by the sound of it
<fantasai> ACTION fantasai edit css3-images with resolution
<trackbot> Created ACTION-3 - Edit css3-images with resolution [on
Elika Etemad - due 2010-05-10].
transitions of CSS images (including gradients)
simon: this is my proposal. web authors can animate links and
colours but can't do cross fades between images and especiall
gradients
<smfr>
[13]http://lists.w3.org/Archives/Public/public-fx/2010AprJun/0007.ht
ml
[13] http://lists.w3.org/Archives/Public/public-fx/2010AprJun/0007.html
simon: new functional notation lets you do wipe or grossfade, or
opocity or a filter
... its making a synthetic image that can be used anywhere in css
... gradient interoplation is kind of a side issue
... if accepted, will write a proposal
elika: could go in the images draft
doug: loks good so far, would like to see it in the draft to see it
in context
<F1LT3R_> could i get that link again?
simon: infinite range of effects, so how to bound it
... could use svg filters
... need a set of wipes/fades
erik: could do that using filters too
<smfr>
[14]http://www.w3.org/TR/2005/REC-SMIL2-20050107/smil-transitions.ht
ml#TransitionEffects-Appendix
[14] http://www.w3.org/TR/2005/REC-SMIL2-20050107/smil-transitions.html#TransitionEffects-Appendix
anthony; some video editing apps have a set of crossfade effects
chris: smil has a set from video editing
simon: too big a list
anthon: canned list is very extensive
simon: can have canned effects but also a fiunction to transform an
image
<ed> erik: mapping more than one input image from css syntax in
terms of svg filters is possible, if you want to define it that way
(e.g several feImage elements, or new filter input image-keywords)
doug: canned effects as syntactic sugar
anthony: so zoom into images?
simon: yes, and rotates. wipe is a translation
chris: like them all defined and then shorthand for common ones
anthony: need to describe the underlying rendering model. all
rendered to an image. need to be clear on how it composites
simon: risk of over complex functions which are hard to author
doug: if the primitives are the underlying part we can optimise
simon: suppose you have a high-level push. but a more complext one
would have three or four levels of nesting
chris: ok to make the common things easy and the complex things
possible
doug: need some good examles, especially if there are things that
will be outside what we plan to do
<scribe> ACTION: simon to draft examples for transitions of css
images on a wiki [recorded in
[15]http://www.w3.org/2010/05/03-fx-minutes.html#action01]
<trackbot> Created ACTION-4 - Draft examples for transitions of css
images on a wiki [on Simon Fraser - due 2010-05-10].
doug: if its on a wiki we can all contribute
action simon to implement the whole web
<trackbot> Created ACTION-5 - Implement the whole web [on Simon
Fraser - due 2010-05-10].
close action-5
<trackbot> ACTION-5 Implement the whole web closed
<smfr> heh
<smfr> phew
svg/css merged transforms spec
erik: any progress on that?
anthony: committed a merged spec but its very vasic and needs work.
need help with it
<smfr> anthony: is it this? [16]http://www.w3.org/TR/SVG-Transforms/
[16] http://www.w3.org/TR/SVG-Transforms/
anthony: need somewhere to put it
action chris to make an fx area on dev.w3.org
<trackbot> Created ACTION-6 - Make an fx area on dev.w3.org [on
Chris Lilley - due 2010-05-10].
anthony: no, starting with the 2d ones
action doug to ask for an FX wiki
<trackbot> Created ACTION-7 - Ask for an FX wiki [on Doug Schepers -
due 2010-05-10].
<shepazu> [17]http://www.w3.org/Graphics/fx/track/
[17] http://www.w3.org/Graphics/fx/track/
harmonizing CSSMatrix and SVGMatrix (2D)
simon: css matrixc was wrong and svg was right so we have corrected
that
<ed>
[18]http://lists.w3.org/Archives/Public/public-fx/2010AprJun/0022.ht
ml
[18] http://lists.w3.org/Archives/Public/public-fx/2010AprJun/0022.html
simon: the way we implemented css matrix multioply, needed to do a
mult right not mult left
... that change is now in webkit. no other changes are needed.
... we use row major because C++ does that
... spec needs to be updated. removed multiply-left
... pseudocode is in c/c++ style, need to be more explicit to be
column major
anthony: doesn;t matter on internal format as long as spec gives
right results
<dbaron> Talking about left and right is a bit painful because they
have opposite meanings with row-major and column-major
anthony: ok with actual matrix examples. should clarify that
internal format is implementor chpice
chris: agree with david
david; cairo and mozilla do it the opposite way round for example
<dbaron> cairo and the spec, anyway
<dbaron> and in some places mozilla follows the spec and in some
follows cairo
erik; dom interfaces have access properties, will these be the same?
simon: yes
... so spec will be updated to use the svg notation
... remaining piece is decomposition pseudocode, - can leave it and
say it refers to coloumn-major, or replace it with the actual math
chris: ok to keep pseudocode as long as its prefaced by an
explanation of the two ways to do it
actiuon: simon add explanatory material about row and column major
options to spec
actiion: simon add explanatory material about row and column major
options to spec
<scribe> ACTION: simon add explanatory material about row and column
major options to spec [recorded in
[19]http://www.w3.org/2010/05/03-fx-minutes.html#action02]
<trackbot> Created ACTION-8 - Add explanatory material about row and
column major options to spec [on Simon Fraser - due 2010-05-10].
<ed> s/dom interfaces have access properties/the SVG/CSSMatrix dom
interfaces have access properties [a-f] for matrix values/
next telcon
<shepazu> [20]http://www.w3.org/Graphics/fx/wiki/Main_Page
[20] http://www.w3.org/Graphics/fx/wiki/Main_Page
simon: prefer biweekly andf 60 minutes
<smfr> "The URL path in your request doesn't match anything we have
available."
(general agreement on 60 minutes biweekly)
<scribe> ACTION: chris to book a regular biweekly telcon [recorded
in [21]http://www.w3.org/2010/05/03-fx-minutes.html#action03]
<trackbot> Created ACTION-9 - Book a regular biweekly telcon [on
Chris Lilley - due 2010-05-10].
elika: simin mentioned a colour function, what is it for?
david: for cross fade t a solid colour
elika: why not just put a colour value directly?
simon: ambiguity in background shorthand
... will see if we can do just a colour
elika: or wrap in image notation
doug: will transitions also work with svg, withing svg and also for
svg images used as backgrounds in html?
simon: will work on animatable css properties, and will work with
svg images same as any other image
erik: agree
doug: does the spec make it clear that this is allowed?
adjourned
Summary of Action Items
[NEW] ACTION: chris to book a regular biweekly telcon [recorded in
[22]http://www.w3.org/2010/05/03-fx-minutes.html#action03]
[NEW] ACTION: simon add explanatory material about row and column
major options to spec [recorded in
[23]http://www.w3.org/2010/05/03-fx-minutes.html#action02]
[NEW] ACTION: simon to draft examples for transitions of css images
on a wiki [recorded in
[24]http://www.w3.org/2010/05/03-fx-minutes.html#action01]
[End of minutes]
--
Chris Lilley mailto:chris@w3.org
Technical Director, Interaction Domain
W3C Graphics Activity Lead
Co-Chair, W3C Hypertext CG
Received on Monday, 3 May 2010 21:14:52 UTC