> #if (A.x-B.x<Threshold &> A.y-B.y<Threshold &> A.z-B.z<Threshold)
You're going to want to put abs() around the left hand sides of those
comparisons.
A simpler (though slower) option is
#if ( vlength(A-B) < Threshold )
- Slime
[ http://www.slimeland.com/ ]
