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Subject: RE: [cgmo-webcgm] about transform [was RE: [cgmo-webcgm] Groups - Proposed WebCGM 2.1 ...]
Dieter, An application would generate a DOM script that would work on any Web2.1 compliant plug-in. Forerst -----Original Message----- From: Weidenbrueck, Dieter [mailto:dweidenbrueck@ptc.com] Sent: Tuesday, September 04, 2007 11:40 AM To: Forrest Carpenter; Lofton Henderson; cgmo-webcgm@lists.oasis-open.org Subject: RE: [cgmo-webcgm] about transform [was RE: [cgmo-webcgm] Groups - Proposed WebCGM 2.1 ...] Forrest, Why do we need a DOM script then, if the application has to do the job anyway? Dieter -----Original Message----- From: Forrest Carpenter [mailto:forrest@sdicgm.com] Sent: Dienstag, 4. September 2007 18:37 To: 'Lofton Henderson'; cgmo-webcgm@lists.oasis-open.org Subject: RE: [cgmo-webcgm] about transform [was RE: [cgmo-webcgm] Groups - Proposed WebCGM 2.1 ...] All, I believe a transform as a style property would be very useful. I would not expect a user to manually code an EcmaScript to perform simple animation. My thoughts would be a CGM Editing application would create the script interactively. Regards, Forrest -----Original Message----- From: Lofton Henderson [mailto:lofton@rockynet.com] Sent: Tuesday, September 04, 2007 11:08 AM To: Weidenbrueck, Dieter; Bezaire, Benoit; cgmo-webcgm@lists.oasis-open.org Subject: RE: [cgmo-webcgm] about transform [was RE: [cgmo-webcgm] Groups - Proposed WebCGM 2.1 ...] Dieter, Thanks for the detailed contribution. I'll look at all of it more carefully, but one small technical point catches my attention now... At 11:44 AM 9/4/2007 -0400, Weidenbrueck, Dieter wrote: >Lofton,, > >There are several issues with this: > >- user experience > We wonder how many users are capable of building transform >matrices by concatenating them using EcmaScript. This requires quite a >level of mathematical skills. Indeed. But two observations: 1.) in scenarios like Molly/Larry, their tool would presumably provide a simple parameter interface of some sort to their customers, and hide the dirty work of generating the transforms. 2.) SVG is interesting in providing, in addition to 3x3 Matrix, individual transform components for Scale, Rotate, Translate. (Of course, that presents a whole different set of traps for the careless users -- transform components do not commute, etc.) -Lofton.
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