VectorCopy(end, rhc.end);
VectorSubtract(rhc.end, rhc.start, rhc.dist);
RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
VectorCopy(end, rhc.end);
VectorSubtract(rhc.end, rhc.start, rhc.dist);
RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);