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# Rotation on almost identical Vectors quite different

 0 Hi there, Been pulling my hair out on working with vectors and rotations for a few days now and have just discovered something that doesnt make any sense to me, but maybe im missing something obvious I have 2 vectors that seem almost identical to me `````` up {X=0.000000000 Y=0.000000000 Z=1.00000000 } X: 0.000000000 Y: 0.000000000 Z: 1.00000000 surface_normal {X=0.000000000 Y=1.22464679e-18 Z=0.999999940 } X: 0.000000000 Y: 1.22464679e-18 Z: 0.999999940 `````` However when I call rotation on these two vectors I get significantly different results `````` up_rotation {Pitch=90.0000000 Yaw=0.000000000 Roll=0.000000000 } Pitch: 90.0000000 Yaw: 0.000000000 Roll: 0.000000000 sn_rotation {Pitch=90.0000000 Yaw=90.0000000 Roll=0.000000000 } Pitch: 90.0000000 Yaw: 90.0000000 Roll: 0.000000000 `````` Is this legit? What am I missing? Why are the rotations on these 2 vectors not almost identical? Thanks in advance for any help SV Product Version: UE 4.12 Tags: more ▼ asked Aug 21 '16 at 03:45 PM in C++ Programming SolarVelocity 596 ● 31 ● 77 ● 51 add new comment (comments are locked) 10|2000 characters needed characters left ▼ Viewable by all users

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