三维骨架运动数据bvh的读取，显示,基于B样条的路径编辑，运动编辑，多种骨架插值算法（四元数+B样条插值）-3D skeleton movement data bvh read, display, based on B-spline path of the editors, sports editors, Skeleton various interpolation algorithm (Quaternion B-spline interpolation)