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Subject: Re: [docbook] 'calspair' unit type

At 17:00 2003 08 08 -0400, Jeff Beal wrote:
>I'm working on a stylesheet enhancement to add support for <imageobjectco>
>using the 'calspair' unit type to the DocBook XSL stylesheets, and I have a
>question involving the proper interpration of this unit type.  The Def.
>Guide reads:
>"The coordinates are expressed using the semantics of the CALS graphic
>attributes. The format of the coordinates is "x1,y1 x2,y2". This identifies
>a rectangle with the lower-left corner at (x1,y1) and the upper-right corner
>at (x2,y2). The X and Y coordinates are integers in the range 0 to 10000;
>they express a percentage of the total distance from 0.00 to 100.00%."
>My question is, where is the point (0,0)?  I started out by calculating
>everything from the top-left corner, but further consideration got me to
>wondering if the bottom-left corner was correct.

In CALS coordinates, (0,0) is the lower left corner.


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