Manuel Mata wrote:
>> ...
>> - front is -z, back is +z, top is +y, bottom is -y, left is -x, right is +x
>> ...
> 
> Shouldn't it be left +x and right -x ?

Not if +z is away-from-camera and +y is up...even with +z being up and 
+y being north, +x is still east/right.

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

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