//reject curves that do not overlap with bouding boxes
if(!intersect(left.aabb,right.aabb)) return;
//accept curves (and perform super detailed check for intersections)
//if the values are below tolerance
//reject curves that do not overlap with bouding boxes
if(!intersect(left.aabb,right.aabb)) return;
//accept curves (and perform super detailed check for intersections)
//if the values are below tolerance