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Rotation on almost identical Vectors quite different

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
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asked Aug 21 '16 at 03:45 PM in C++ Programming

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SolarVelocity
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