Re: General bug - No out of bounds checking on 3D coordinates

[Ethan M. <merritt@u.washington.edu>]

On Monday 05 July 2004 05:43 am, Hans-Bernhard Broeker wrote:
> IMHO clipping has to be the duty of the callers of map3d_xy, because only
> they can possibly know what the right reaction should be, or at least
> output an intelligible errors message if they can't seem to find a
> reasonable reaction.

For now I have put tests for wrap-around (negative value stored in
unsigned int) into the two high-level callers place_labels3d() and 
place_arrows3d().  If wrap-around  has occurred, the arrow or label
is skipped altogether.

This is not true clipping, but it does catch a potentially fatal error that
has already been made.  Retro-fitting general tests against the current
plot boundaries, coupled with proper clipping of line segments, will
have to wait for a more general overhaul.