RE: [cgmo-webcgm] ISSUE: more DOM/XCF style properties

[Lofton Henderson <lofton@rockynet.com>]

At 11:52 AM 1/18/2008 -0800, Cruikshank, David W wrote:
>This constitutes a proposal to encode units for elements Line and Edge
>Type Definition, Hatch Style Definition, Fill Reference Point, pan
>coordinates, and zoom coordinates for DOM/XCF styling properties in
>NVCD.

ZOOM COORDINATES:  What do you mean by "zoom coordinates"?  I.e., how are 
we going to parameterize zoom?

Is there some implicit zoom reference point -- e.g., the center of the 
current view -- and then just a zoom factor (no coordinate parameters)?

Or is there an explicit zoom reference point as a parameter of the zoom, 
plus a zoom factor (so the zoom might do some panning in the process)?

Or is there an explicit zoom box to which the view is zoomed, and no zoom 
factor (again, the zoom might do some panning in the process)?

PAN COORDINATES:  same sorts of questions.  How to parameterize pan?

While it isn't necessary to answer these questions before resolving that 
all coordinate-type information is NVDC, on the other hand it seems 
reasonable to decide about the parameterizations of the functions before or 
at least concurrently with deciding the units of expression those parameters.

(Possibly I missed issue discussion and resolution about pan/zoom 
parameterizations in a missed telecon.)

-Lofton.


>According to our issue-closure procedure, we will confirm this at the
>next telecon, unless anyone argues otherwise before then.
>
>Dave Cruikshank
>
>
>Technical Fellow - Graphics/Digital Data Interchange
>Boeing Commercial Airplane
>206.544.3560, fax 206.662.3734
>david.w.cruikshank@boeing.com
>
>-----Original Message-----
>From: Cruikshank, David W
>Sent: Sunday, January 06, 2008 3:39 PM
>To: CGM Open WebCGM TC
>Subject: [cgmo-webcgm] ISSUE: more DOM/XCF style properties
>
>The current list of proposed additions to styling interface:
>
>Line Type
>Line Type Initial Offset
>Edge Type
>Edge Type Initial Offset
>Edge Visibility
>Interior Style
>Hatch Index
>Pattern Index
>Fill Reference Point
>Line and Edge Type Definition
>Hatch Style Definition
>Pan
>Zoom
>
>Open issues are:
>Value units for Fill Reference Point, Line and Edge Type Definition and
>Hatch Style Definition How do we spectify Pan and Zoom?
>
>NVDC?
>
>dave
>
>Technical Fellow - Graphics/Digital Data Interchange Boeing Commercial
>Airplane 206.544.3560, fax 206.662.3734 david.w.cruikshank@boeing.com
>
>
>---------------------------------------------------------------------
>To unsubscribe from this mail list, you must leave the OASIS TC that
>generates this mail.  You may a link to this group and all your TCs in
>OASIS
>at:
>https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php
>
>
>---------------------------------------------------------------------
>To unsubscribe from this mail list, you must leave the OASIS TC that
>generates this mail.  You may a link to this group and all your TCs in OASIS
>at:
>https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php