高速虚拟仿真物体的碰撞检测方法

Method of Collision Detection about Moving Fast Models

高速运动虚拟物体在相邻的离散时间点上容易出现碰撞检测遗漏和检测碰撞初始点不准确的情况,针对此问题给出了基于相对运动和空间几何运算结合的随时间运动函数的碰撞检测方法;用相对运动理论推算出移动坐标变换矩阵函数方程,在新的运动路径下进行空间曲线和几何体相交测试,预计算出碰撞时间和碰撞初始点,最后将该碰撞点移动变换回系统坐标空间,得到运动状态下的碰撞位置;该方法能有效准确地检测在高速运动下的碰撞问题。

Collision detection of moving fast model is often missed and not accuracy to each of a family of discrete times. About this problem, a method of collision detection in time function is presented based on the relative motion and space geometries. At first, an equation of movement transform matrix is calculated through theory of the relative motion. In the new path, collision detection can calculate a initial collision time and initial point. At last, the collision point is transformed to system space for computing the real position. The method detect effectively and factually the collision about moving fast models.