【摘要】 从几何方法上介绍了一种支持干涉检测的计算球和包括长方体、锥体、柱体、楔和圆环在内的基本体素之间距离计算方法。根据球及其他几体体素的外形特点和它们的相对位置将空间分成几个区域,推导出了一系列距离计算公式,并给出了实例及计算结果。这种距离计算方法对由基本体素构成的复杂外形之间的干涉检测非常简单实用,可以应用于虚拟现实系统的研究和开发之中更多还原

【Abstract】 A simple method for calculating distance between a solid sphere and a constructive solid geometry (CSG) so lid primitive (including block, cone, cylinder, sphere, wedge and torus) is derived to support the collision detection algorithm. By decomposing the whole space into relative positions and geometric features of the sphere and the primitive considered, closed form distance formula are got. These calculations are very useful in the real time collision detection in which primitives are used as bounding volumes of complex objects.更多还原