Use HAVE_SQRTF.

Works but no -ref yet.

Add (not yet used) fcolors field to struct mesh.

so results can be used as:
   perl tilesnap ... > something.cf
and then "read something.cf".

to generate images of resolution higher than the display can handle.

Add new SUBSTITUTE warp-type ("-subst field0"), which maps
three successive fields -> XYZ position (time-independent).

in each of the files that uses alloca.

camera's distance to a given (world-coordinate) focal point.

Add parti_focalpoint().

CONSTify getfloats().

Add "wait" option -- wait until end of "play".

It now returns void.
Fix (?) interaction between "winsize" and "detach".
At least, it works to say in .partiviewrc
    eval winsize 800x600+400+50
    eval detach hide
to get a bare graphics window with no UI panel.