使用旋转四元数将3d矢量值旋转为单轴
[英]Rotate 3d vector value into a single axis using a rotation quaternion
问题描述
I want to rotate the whole value of a 3d vector into one axis using quaternion rotations. 
我想使用四元数旋转将3d向量的整个值旋转到一个轴上。
The reason behind is that I want to align the X and Y Axis of my smartphone with the X and Y Axis of my vehicle in order to detect lateral and longitudinal acceleration separated on these two axis. 其背后的原因是，我想将智能手机的X和Y轴与车辆的X和Y轴对齐，以便检测在这两个轴上分开的横向和纵向加速度。 Therefore I want to detect the first straight acceleration of the car and rotate the whole acceleration value into the heading axis (X-Axis) of the phone assuming a straight forward motion. 因此，我想检测汽车的第一个直线加速度，并假设直线向前运动，将整个加速度值旋转到手机的前进轴（X轴）上。
How do I achieve this? 我该如何实现？
1 个解决方案
解决方案1
0 2016-06-09 15:18:17
I got it myself while this Link helped me a lot. 我自己得到了，而此链接对我有很大帮助。
In the end I just needed to define the destination axis as a Vector V(Magnitude_Source, 0, 0), calculate the angle between V and the source vector and rotate the source vector. 最后，我只需要将目标轴定义为向量V（Magnitude_Source，0，0），计算V与源向量之间的角度并旋转源向量。
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