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norm_axis_angles and norm_axis_angle should produce deterministic axis for 180 degree rotations #366

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norm_axis_angles and norm_axis_angle should produce deterministic axis for 180 degree rotations#366
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@AlexanderFabisch
AlexanderFabisch
opened on Jun 23, 2026

See discussion in #363

At angle = 180°, axis and -axis represent the same rotation. To make the representation unique, the first non-zero component of axis SHALL be positive.

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