RE: [cgmo-webcgm] new Style Pttributes -- LETD, HSD, LTIO

[Lofton Henderson <lofton@rockynet.com>]

Stuart,

At 09:16 AM 10/17/2007 -0700, Galt, Stuart A wrote:
>[...]
>Is this more what you were looking for?

Yes, exactly.  Good stuff.


>The use cases that I was trying to capture with the defaults column
>were:
>
>- The ability to be able to specify a default behavior of elements that
>are not allowed in a version 1 or 2 file.  For example Line Cap is not
>allowed in a version 1 file.  It would be nice to be able to specify the
>value without upgrading the file to version 3+.
>
>- The ability to be able to define the sizes of the dash, dots, spaces,
>line spacing (for hatches) for the line types that are pre-defined.
>This
>is useful to make lines look consistent across viewers and hard-copy
>versions.
>
>- The ability to be able to specify preferred font substitutions to
>enable mapping the font specified in the CGM and system fonts.  This
>is not actually called out in the table.

But that's okay, as it is in any case another line item in the 2.1 
list.  (And as I recall, someone like Dave was going to send his list of 
what capabilities the font-sub file should have.)

I wasn't so worried about the DOM column, as I understood its scope pretty 
well (as opposed to the Defaults column).

Nevertheless, this is good stuff and we should keep it...


>The use cases for the DOM column were:
>
>- The ability to be able to define line (and hatch) styles for negative
>indexes.  Being able to manipulate these styles at runtime (via the DOM)
>
>it would enable creating the illusion of movement along a line (or
>within
>a fill).
>
>- Changing line and edge types can be used to draw the user attention to
>certain portions of the image.  Modifying the fill style and/or index
>can be used for the same purpose.
>
>- By making shapes (rectangles, circles, closed polygons, etc) that
>surround points of interest and using a fill style of none and then 
>controlling
>the edge visibility attention can be drawn to complex regions (even multiple
>regions). This is similar to how highlight of a region works now, but this 
>would
>allow edges to be different color if needed.
>
>Useless cases:
>
>- Disclaimer: I don't use markers and never have...  But being able to
>change them would allow for implementation of things like To-Do or checklists?
>
>- Disclaimer: I don't use the text score element either... The only use
>case I could think of was to be able to dynamically underline text.  But this
>is a case of a solution looking for a problem.

IMO, we can leave those t.b.d. for now, and decide later.  If they stir up 
popular support, keep 'em.  If no one cares -- dump 'em.

-Lofton.

>
>
> > -----Original Message-----
> > From: Lofton Henderson [mailto:lofton@rockynet.com]
> > Sent: Tuesday, October 16, 2007 4:25 PM
> > To: cgmo-webcgm@lists.oasis-open.org
> > Subject: [cgmo-webcgm] new Style Pttributes -- LETD, HSD, LTIO
> >
> > Two comments...
> >
> > LETD as Style Property:  The table shows "no" for Line and
> > Edge Type Definition (LETD) and Hatch Style Definition (HSD)
> > in the Style Properties column (DOM and/or XCF).  This is not
> > how I remember the discussion.  As I recall, there were at
> > least some people that thought LETD was essential (HSD also).
> >
> > Am I remembering wrong?  Did the TC decide that LETD-like and
> > HSD-like functionality were not to be offered as Style
> > Properties (and through XCF)?
> >
> > Support for LTIO:  There is also a comment about Line Type Initial
> > Offset:  "[1] Support for this element seems limited."  I
> > actually got the opposite impression, that it is considered
> > fairly simple to implement, and is generally implemented.
> > But about the latter I might have assumed too much.
> >
> > Vendors (Ematek, LST, PTC, SDI) ... have you implemented it
> > (Line Type Initial Offset)?
> >
> >   -Lofton.
> >
> > At 09:27 PM 10/16/2007 +0000, stuart.a.galt@boeing.com wrote:
> > >I have updated the table based on the 10/10 telecon.
> > >-- Mr. Stuart Galt The document revision named Style Attributes
> > >(Attributes_Table.doc) has been submitted by Mr. Stuart Galt to the
> > >OASIS CGM Open WebCGM TC document repository.  This document is
> > >revision #1 of Attributes_Table.pdf. Document Description: Style
> > >Attributes for "defaults" and view time control. View
> > Document Details:
> > >http://www.oasis-open.org/apps/org/workgroup/cgmo-webcgm/docu
>ment.php?d
> > >ocument_id=25742
> > >Download
> > >Document:
> > >http://www.oasis-open.org/apps/org/workgroup/cgmo-webcgm/down
>load.php/2
> > >5742/Attributes_Table.doc
> > >Revision: This document is revision #1 of Attributes_Table.pdf.  The
> > >document details page referenced above will show the
> > complete revision
> > >history. PLEASE NOTE:  If the above links do not work for you, your
> > >email application may be breaking the link into two pieces.
> > You may be
> > >able to copy and paste the entire link address into the
> > address field
> > >of your web browser. -OASIS Open Administration
> >
> >
> >