当x轴变为-x?
时,如何估计新的四元数简而言之,当y周围的旋转变为180度时,我需要估计新的四元数。
答案 0 :(得分:0)
如果y周围的角度是30度,x = 20度左右,z周围是z = 70度那么y周围应该变成180-30度,因为x变成-x
在四元数中: -in中的新y应为(180-30)* pi / 180,其四元数如下所示(原https://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_angles但不同的坐标系)
a = 180-30; //180-30;
ax = 20 * Math.PI/180;
ay = a * Math.PI/180;
az = 70 * Math.PI/180;
t0 = Math.cos(ay * 0.5); // yaw
t1 = Math.sin(ay * 0.5);
t2 = Math.cos(az * 0.5); // roll
t3 = Math.sin(az * 0.5);
t4 = Math.cos(ax * 0.5); // pitch
t5 = Math.sin(ax * 0.5);
t024 = t0 * t2 * t4;
t025 = t0 * t2 * t5;
t034 = t0 * t3 * t4;
t035 = t0 * t3 * t5;
t124 = t1 * t2 * t4;
t125 = t1 * t2 * t5;
t134 = t1 * t3 * t4;
t135 = t1 * t3 * t5;
x = t025 + t134;
y =-t035 + t124;
z = t034 + t125;
w = t024 - t135;