19 lines
377 B
Python
19 lines
377 B
Python
import mathutils
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from math import radians
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vec = mathutils.Vector((1.0, 2.0, 3.0))
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mat_rot = mathutils.Matrix.Rotation(radians(90.0), 4, 'X')
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mat_trans = mathutils.Matrix.Translation(vec)
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mat = mat_trans @ mat_rot
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mat.invert()
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mat3 = mat.to_3x3()
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quat1 = mat.to_quaternion()
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quat2 = mat3.to_quaternion()
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quat_diff = quat1.rotation_difference(quat2)
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print(quat_diff.angle)
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