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.
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/.
This is the Proposed
Recommendation, of the WebCGM 2.0 for review by W3C Members and other
interested parties. It has been produced by the WebCGM Working Group, part
of the Graphics Activity.
The Working Group expects to advance this Working Draft to Recommendation
Status.
W3C Advisory Committee Representatives are invited to submit their formal
review per the instructions in the Call for Review (see @@ Advisory Committee
questionnaires). The review period ends on 30 November 2006. Members of
the public are also invited to send comments on this Proposed Recommendation
to the public email list public-webcgm@w3.org
(public
archive). Use "[PR Comment]" in the subject line of your email.
This document is based upon the WebCGM 2.0 Candidate
Recommendation of 06 September 2006. Feedback received during that review
resulted in clarifications and minor changes, but no major changes. The
WebCGM Working Group believes that this specification addresses all Candidate
Recommendation issues. The list of changes made since the Candidate
Recommendation is available in Appendix D1.
A public Implementation
Report showing that the Candidate Recommendation exit criteria have been
met and exceeded is available, along with a WebCGM 2.0 test
suite.
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The Features as "at risk", listed in the WebCGM 2.0 Candidate
Recommendation now have the following status:
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.
Publication as a Proposed 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.