This paper brings forward and proves a rapid interval test for resolving intersection tests between bounding volumes . it determine two bounding volume do not overlap by checking if one of their bound intervals on direction axis defined by the fix direction set does not overlap 文中提出并证明了一种快速区间测试法以解决两个固定方向凸包包围盒间的相交测试问题，通过查找两个包围盒在由固定方向集合所定义的方向轴上的范围区间是否存在不重叠的情况，来判断它们是否不相交。
