rotate vector

[pety20...@gmail.com]

hi, i have MVecter1 and MVector2 (and MVector3, ...)
they're all linked.
now, if one my vector,example, MVecter1, changing to newMVector1
how can i find other connected vectors?(newMVector2, newMVector3, ...)

[Justin Israel]

Hopefully my suggestion isn't silly and missing something specific to working with vectors in a bigger picture... But is this something where you can keep related vectors in a MVectorArray so that when you want to change one, you can find the others? 

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[Angelo]

If your vectors are vectors that make up a rotation matrix, you can use quaternions to rotate all the vectors.

for example:

rot_matrix = (x_vec, y_vec, z_vec, om.MPoint.kOrigin)

# you want to rotate x_vec to x_vec_target and apply that too the other vectors to rotate the matrix

offset_quat = x_vec.rotateTo(x_vec_target)

# apply the rotate the matrix using quaternions

rot_mat = om.MTransformationMatrix(rot_mat).rotation(asQuaternion=True)

result_rot = rot_mat * offset_quat

# get the matrix

result_matrix = result_rot.asMatrix()

from result_matrix, you can get the x_vec, y_vec, and z_vec rotated