运动物体的八分体变换
Octant Conversions of Moving Objects
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摘要: 本文讨论三维物体的一种八分体结构.直接编码包含在物体中的更高阶八分体.给出八分体编码在计算机中实现时的数据表示法.提出两种快速算法:(1)物体通过空间做线性运动时修改该物体的八分体编码,(2)物体旋转90°时变换其八分体编码.Abstract: This paper discusses an octant structure for three-dimensional objects.A direct proce-dure for encoding higher order octants belonging to an object is presented.A data re-presentation for computer implementation of octant encoding is given.Fast algorithmsare presented for (1) updating an object's octant encoding as the object is linearlymoved through space and (2) converting an object's octant encoding as the objectis rotated 90°.