[ODE] XODE - should angles be in degrees or radians?

[Chris Jefferson]

Jon Watte wrote:

>I thought we'd already agreed that a single format is better, because otherwise some importers will forget to switch on the option.
>
>Radians is fine. Dividing by 180/pi on export is a no-brainer for a writer.
>
>  
>
One reason I would vote in favour of degrees is that when we are 
defining objects, it would be nice to be able to exactly define right 
angles.

For example, if I want a right-angle I can write "degrees=90". I can't 
exactly specify a right angle in radians. While it might not matter, it 
seems somehow nice to be able to get these things exact (unless you 
allow specifiying angles as a multiple of pi, but then we come back to 
multiple represenations again)

Chris