getObjectExtents question [was Re: [cgmo-webcgm] Locatable interface]

[Lofton Henderson <lofton@rockynet.com>]

Thanks for the reference Benoit.  It is instructive to read it
...

At 10:39 AM 1/30/2008 -0500, Bezaire, Benoit wrote:
> http://www.w3.org/TR/SVG11/types.html#InterfaceSVGLocatable

IMO, there are several complexities in the SVG model that make this
complicated, and they do not apply to WebCGM.  For example,
viewport-setting elements; for example screen coordinates; etc. 

WebCGM has none of that, and the 'transform' we are talking about is
simply a userspace-to-userspace transform (in SVG terminology).  Or
VDC-to-VDC, in CGM terminology.

However, it does raise a small detail about the getObjectExtents
method:  do we want it to return, 1.) the extents as defined in the
metafile (except in NVDC units)?  Or should it return, 2.)
transformed extents, if there is a 'transform' SP on the object?  Or
should it be 3.) switch selectable?

It is a small issue, because if we decide #1, then one can use the
getStyleProperties('transform') method to fetch the transform and achieve
the same effect as #2.  So it is a convenience and packaging
question.

-Lofton.