When performing inverse kinematics (IK) on a complicated bone chain, it can become too complex for an analytical solution. Cyclic Coordinate Descent (CCD) is an alternative that is both easy to implement and efficient to process。逆运动学问题一般采用解析法和基于Jacobian矩阵的迭代方法,前者虽然精度高而且能达 (IK) on a