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Subject: Re: WebCGM preview
Dieter, Thanks for the substantial thought and effort you put into this. However, I should note that your table #1, comparison of specifications in 3.1.2.4 and 3.2.1.1, is taken from the original 1999 text. Please have a look at the current text of 2nd release, which I attached to previous mail. The case of default-obj-behavior, no-viewcontext, no-region (1st column, last row) actually says this now in the 2nd Release text: "The resulting view is a full-picture view, not a zoomed view." This was a previous (year 2000) decision. Here are my thoughts on your suggestions: 1. While I appreciate the appeal of making all of this stuff more consistent, I am very much against revisiting resolved issues unless there is a compelling new reason or argument, particularly at this very late (past due!) stage of the 2nd Release (of WebCGM **1.0**). Your suggested "zoom to" behavior in fact reverses last year's decision. 2. My suggestion was to clarify the case of default-obj-behavior, no-viewcontext, region (1st column, 3rd row) consistently with that decision -- i.e., the cases only differ in that you highlight the primitives if a region is not present, or the region if present. 3. The suggestions of column 2, rows 3 and 4, actually reverse the specification of the 1999 spec (1st release): "If no ViewContext attribute exists in the object, the highlight behavior shall be implemented." For pretty much the same reasons as #1, I don't want to see this done. If we had had such a nice analysis back in 1998, when we were producing the WebCGM REC text, I have no doubt that it would have become the normative specification. I think the functional specifications are fine, and the presentation (table) is excellent. My objections are "procedural" -- making functional changes (no matter how appealing) unless a serious defect exists, and revisiting/revising issues (the "no-zoom" clarification) at a very late stage, without compelling reasons. -Lofton. ******************* Lofton Henderson 1919 Fourteenth St., #604 Boulder, CO 80302 Phone: 303-449-8728 Email: lofton@rockynet.com *******************
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