- From: SVG Working Group Issue Tracker <sysbot+tracker@w3.org>
- Date: Tue, 29 Jun 2010 13:33:49 +0000
- To: public-svg-wg@w3.org
ISSUE-2341: Clarify data types such as "<coordinate>+" [SVG 1.1 F2 Last Call] http://www.w3.org/Graphics/SVG/WG/track/issues/2341 Raised by: Erik Dahlström On product: SVG 1.1 F2 Last Call It would be interesting to know the precise definition of a data type like "<coordinate>+" (and similar constructs for example mentioned in the text chapter). Of cource, <coordinate>, <length>, <number> etc are already defined, but still I did not find the meaning of '+'. What does this exactly mean? Obviously a list as mentioned in the prose defintions of the attributes, but it has not the syntax of <list-of-Ts> clearly defined in the data type chapter. I think, in SVG tiny 1.2 this is typically changed to <list-of-Ts>. However, this has consequences for animation. Something like <coordinate>, <length>, <number> can have an additive animation (including to- and by-animation), <list-of-Ts> not. Following SVG tiny 1.2, this means especially, that it is not possible anymore in SVG 1.1 as well to have a to- or by-animation for such text (tspan) attributes like x, y, dx, dy. This can be a restriction only helpful for tiny 1.2 devices or it can be some general idea of simplication - what applies? My interpretation of "<coordinate>+" is, that those attributes can be additive for each single list item, therefore especially to- or by-animations are applicable. However, because I could not find any precise description of '+', there are maybe other interpretations as well with the result of different implementations (when I was a member of the group I provided already some samples including results from different viewers... of course the results from implementations are influenced by inconsistencies and bugs as well, therefore there is no interpretation identificable, all implementations agree on). Original mail: http://www.w3.org/mid/201006291129.02611.Dr.O.Hoffmann@gmx.de
Received on Tuesday, 29 June 2010 13:33:50 UTC