Richer data in .3d file

[Olly Betts]

On Mon, Mar 01, 2004 at 08:11:38PM -0800, Erin Lynch wrote:
> Also I've noticed that if you output at 1:1000 and 1:2000, then scale
> the first in a program like Illustrator, the two centrelines will not
> align perfectly.  It would be nice if they did, especially when
> stitching together two caves drawn up at different scales.

I've just looked into this - I think the slight mismatch is due to all
coordinates being rounded to the nearest 1/72 of an inch - about .35mm.
That's pretty much invisible on a printout, but when you zoom in with a
drawing package you can see it.

I think the solution is to use the cave coordinates to the nearest cm,
and change the scaling factor.

Cheers,
    Olly