Re: standard units for model/terrain files?

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Marcus Barnes (marcus++at++multigen.com)
Sat, 22 Feb 1997 16:43:38 -0800

On Feb 21, 2:50pm, Christopher R Volpe wrote:
> Subject: standard units for model/terrain files?
> Hi-
> I was wondering if particular file formats (e.g. Multigen OpenFlight)
> use a standard set of units for geometry (i.e. meters, feet, miles,
> etc).

Each OpenFlight file specifies its own units in the header record.

> Do the units tend to vary on a per file basis (e.g. a terrain file
> may be in meters whereas a vehicle model may be in feet?)

Yes, they can vary in this way ...

The OpenFlight loader has a mode that lets you specify the target units that
you want. For instance, you can load a file in inches that was modelled in
feet. The loader's default target units is meters. See the readme file about
PFFLT_USEUNITS for more details.

Regards.

--
+ Marcus Barnes, Technical Staff        mailto:marcus++at++multigen.com +
+ Multigen Inc.                         http://www.multigen.com    +
+ 550 S. Winchester Blvd.               phoneto:1-408-556-2654     +
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