Flagging "no primitives in object"

[Lofton Henderson <lofton@rockynet.com>]

All -- 

Before we defined WebCGMRect, we were discussing how getObjectExtent
should indicate "no primitives in object".  We were
playing with xur<xll and yur<yll.

Now that the return type is a WebCGMRect object, Benoit's draft proposes
the natural choice -- "null".   ("Null return
value" is unambiguously defined in 5.5.2.1).

Does anyone disagree?  

(Apologies if we discussed this in meeting, I don't recall it.)

-Lofton.


At 12:21 PM 6/9/2008 -0400, Bezaire, Benoit wrote:

 
WebCGMRect getObjectExtent()

Retrieves the bounding box rectangle of the Graphical Primitive elements within an APS. The bounding box calculation is based on the abstract locus of the primitives within the APS it is not affected by CGM Primitive Attribute (such as line width) or Control elements, nor by APS Attributes or Style Properties (except geometric transform). The rectangle is defined by two diametrically opposite corner points expressed in NVDC after the application of the Current Transformation Matrix.Parameters

No parameters.

Return value

WebCGMRect; the bounding rectangle of the APS, or null if the APS has no Graphical Primitive elements.

Exceptions

No exceptions.