[ODE] GIMPACT with doubles

[Jon Watte (ODE)]

If you author in floats, then there is no gain in storing in doubles.

However, if you author in doubles, or more likely, generate in doubles, 
then you can get a totally seamless, earth-size planet, without having 
to worry about pinholes where the local reference frames meet up.

You could then convert to a float reference frame when rendering, but 
the point is that that's a single reference frame (thus, seamless, 
pinhole free) rather than a number of separate reference frames.

Cheers,

       / h+


Pierre Terdiman wrote:
> I don't see why the "all doubles" version is better for this. As far as I
> can see using 3 doubles for the world position and keeping all vertices in
> floats (*relative to the mesh position in doubles*) is just as accurate.
>
> It's likely that the meshes are authored (and exported) using floats, so
> converting them to doubles doesn't buy you more accuracy. It just adds
> noise...
>
> - Pierre
>