Dear Advisory Committee Representative,
I am pleased to announce that WebCGM 2.0 is a W3C Candidate Recommendation.
http://www.w3.org/TR/2006/CR-webcgm20-20060906/
The approval and publication is in response to the request posted to the
Chairs mailing list:
http://lists.w3.org/Archives/Member/chairs/2006JulSep/0105
The disposition of Last Call comments is available at:
http://www.w3.org/2006/07/03/WebCGM2-LastCallResponses.html
There were no formal objections.
A preliminary WebCGM 2.0 test suite is available at:
http://www.w3.org/2006/Graphics/WebCGM/testsuite.html
A preliminary implementation report has a detailed matrix showing which
software implements each feature of the specification:
http://www.w3.org/2006/Graphics/WebCGM/implementation-report.html
There are no patent disclosures relevant to this specification; please see the
WebCGM Working Group's patent disclosure page:
http://www.w3.org/2004/01/pp-impl/39256/status
==============================================
Quoting from the WebCGM 2.0
W3C Candidate Recommendation - 06 September 2006
==============================================
WebCGM 2.0
W3C Candidate Recommendation 06 September 2006
This version:
http://www.w3.org/TR/2006/CR-webcgm20-20060906/
Latest version:
http://www.w3.org/TR/webcgm20/
Previous version:
http://www.w3.org/TR/2006/WD-webcgm20-20060623/
Editors:
Benoit Bezaire, ITEDO
David Cruikshank, The Boeing Company
Lofton Henderson
Abstract
--------
Computer Graphics Metafile (CGM) is an ISO standard, defined by
ISO/IEC 8632:1999, for the interchange of 2D vector and mixed
vector/raster graphics. WebCGM is a profile of CGM, which adds Web
linking and is optimized for Web applications in technical
illustration, electronic documentation, geophysical data
visualization, and similar fields. First published (1.0) in 1999
and followed by a second (errata) release in 2001, WebCGM unifies
potentially diverse approaches to CGM utilization in Web document
applications. It therefore represents a significant
interoperability agreement amongst major users and implementers of
the ISO CGM standard.
WebCGM 2.0 adds a DOM (API) specification for programmatic access
to WebCGM objects, and a specification of an XML Companion File
(XCF) architecture, for externalization of non-graphical metadata.
WebCGM 2.0, in addition, builds upon and extends the graphical and
intelligent content of WebCGM 1.0, delivering functionality that
was forecast for WebCGM 1.0, but was postponed in order to get the
standard and its implementations to users expeditiously.
The design criteria for WebCGM aim at a balance between graphical
expressive power on the one hand, and simplicity and
implementability on the other. A small but powerful set of
standardized metadata elements supports the functionalities of
hyperlinking and document navigation, picture structuring and
layering, and enabling search and query of WebCGM picture content.
Status of This Document
-----------------------
This section describes the status of this document at the time of
its publication. Other documents may supersede this document. A
list of current W3C publications and the latest revision of this
technical report can be found in the W3C technical reports index
at http://www.w3.org/TR/.
Publication as a Candidate Recommendation does not imply
endorsement by the W3C Membership. This is a draft document and
may be updated, replaced or obsoleted by other documents at any
time. It is inappropriate to cite this document as other than work
in progress.
W3C publishes a Candidate Recommendation to indicate that the
document is believed to be stable and to encourage implementation
by the developer community. The WebCGM Working Group expects to
request that the Director advance this document to Proposed
Recommendation when the following exit criteria have been met:
1. Sufficient reports of implementation experience have been
gathered to demonstrate that the WebCGM 2.0 features are
implementable and are interpreted in a consistent manner. To do
so, the Working Group will insure that all features in the WebCGM
2.0 specification have been implemented at least twice in an
interoperable way. This defined this as:
* the implementations have been developed independently,
* each test in the WebCGM 2.0 test suite has at least two
passing implementations.
2. The Working Group releases a public test suite for WebCGM 2.0
along with a preliminary implementation report.
The WebCGM 2.0 test suite will add to the WebCGM 1.0 test suite at
least one test case for any new feature introduced in WebCGM 2.0,
covering the new DOM-related and XCF features, and the new static
and "intelligence" features.
The preliminary Interoperability Implementation Report shows that
most WebCGM 2.0 features are already implemented. Therefore the
Candidate Recommendation period is short and will end on 06
October 2006.
The Working Group has identified the following features as "at
risk". If not interoperably implemented by the end of the
Candidate Recommendation period, these features will be modified
as shown below, in the WebCGM Profile of the Proposed
Recommendation version.
* Performance requirements for pattern size aspect of definable
patterns: loosen rendering conformance requirement
* Performance requirements for Mitre Limit: loosen rendering
conformance requirement
* Text on a path: remove feature
This document was developed by the WebCGM Working Group, part of
the Graphics Activity. The Working Group expects to advance this
Working Draft to Recommendation Status. The list of changes made
since the last public Working Draft is available in Appendix D1.
This specification is based, in large part, on a work by the same
name, WebCGM 2.0 an OASIS Committee Specification submitted to W3C
as WebCGM 2.0 Submission. This Member Submission is related to the
previous W3C work on WebCGM 1.0, and draws on experiences with
that format from implementors and users over five years. This
Working Draft incorporates feedback and discussion following the
Submission.
Please send comments on this document to the working group's
public email list public-webcgm@w3.org (public archive). Use "[CR
Comment]" in the subject line of your email.
Publication as a Candidate Recommendation does not imply
endorsement by the W3C Membership. This is a draft document and
may be updated, replaced or obsoleted by other documents at any
time. It is inappropriate to cite this document as other than work
in progress.
This document was produced by a group operating under the 5
February 2004 W3C Patent Policy. W3C maintains a public list of
any patent disclosures made in connection with the deliverables of
the group; that page also includes instructions for disclosing a
patent. An individual who has actual knowledge of a patent which
the individual believes contains Essential Claim(s) must disclose
the information in accordance with section 6 of the W3C Patent
Policy.
-------------------------------------------
The WebCGM Working Group expects to receive more comments in the form of
implementation feedback and test cases. The Working Group believes it will
have satisfied its implementation criteria by 06 October 2006.
This Call for Implementations follows section 7.4.3 of the W3C Process Document:
http://www.w3.org/2005/10/Process-20051014/tr.html#cfi
Thank you,
For Tim Berners-Lee, Director; and
Chris Lilley, Graphics Activity Lead and Interaction Domain Leader; and
Thierry Michel, WebCGM Working Group Team Contact;
Susan Lesch, W3C Communications Team