How to amend the result when correct the initial_directions？

[hujb48]

Hi, I would like to use my own skeleton, however, some of my initial_directions are not paralleled to any coordinate axis. So, my question is how to amend the result? For example: I got LeftElbow': [1, 0, 0] to LeftElbow': [0.718, 0.718, 0], this makes a rotation of 45 degree around with the z axis in local coordinate system. Now, for the .BVH the XYZ rotation parameterss are [a, b, c], so how could I get new parameters for the new local coordinate system which are [a', b', c'] 作者您好，我想使用我自己的骨架，然而，我的一些initial_directions是不平行于任何坐标轴的。所以，我的问题是如何去修正得到的ZXY旋转结果？ 例如: 我的LeftElbow'初始direction是:[1,0,0]，修改为LeftElbow':[0.718, 0.718, 0]，这个旋转变化体现为在局部坐标系的中的绕z轴旋转45度。对于原来的direction，在.bvh文件中的对应点的 X、Y、Z旋转参数是[a, b, c]，那么我如何获得新的局部坐标系的旋转参数[a'，b'，c']呢？

[visionNoob]

@hujb48 did you solve the problem?