Posted by Kevin Matthews on February 02, 2001 at 00:00:54:
In Reply to: Re: 12 and 0.0833333 default DW settings posted by Gary on February 01, 2001 at 21:24:37:
What have you guys left for us to say? Jeff has pretty much nailed it.
Yes, for some wierd historical reason, probably because it is mechanical software first and architectural software second, U.S. DXF files mostly have the internal coordinates in inches. most sowftare takes this into account.
Because the U.S. version of DesignWorkshop uses feet internally, the default settings are to scale the DXF inch dimensions into feet when importing, and to scale the DW feet dimensions into inches when exporting.
The DXF/DWG import/export code does vary from Lite to Classic to Pro, and between Windows and Macintosh. On the Mac, there's no way for users to change the default scaling settings, essentially because there's no real need, and if the software just does it right, then there's one more thing that stays simple for users.
DesignWorkshop Pro for Windows has the most complete DWG/DXF translation functions in the DW family, including that nerdy little DW.ini file which lets Jeff experiment, and lock in his own specialized settings. The DW.ini file also controls some other specialized settings which only need to be adjusted in the wonderful world of Windows. BTW, the DesignWorkshop DXF export should work very smoothly with the Artlantis DXF importer, because we actually wrote that for Abvent, on contract. (Though actually since we wrote carefully to the DXF/DWG standard, it should just work well in general.)
Note that the dimensions you display in the user interface of DesignWorkshop are independent of the actual internal numbers for object coordinates. This is a sophisticated way to support the full range of linear units without losing accuracy.