llRot2Up

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/LSL

Rot2Up

llRot2Up

Summary

Function: vector llRot2Up( rotation q );

20	Function ID
0.0	Forced Delay
10.0	Energy

Computes the orientation of the local z-axis relative to the earth.
Returns a vector that is the up vector defined by q, i.e. a unit vector pointing in the positive Z direction

• rotation

q

Can be useful to identify the orientation of the local horizontal-plane of the prim, since it's z-axis is always perpendicular to this local horizontal plane.

Specification

Mathematically equivalent to: <lsl>ret = llVecNorm(<0., 0., 1.> * q);</lsl> If q is known to be a unit quaternion then it can be simplified as: <lsl>ret = <0., 0., 1.> * q;</lsl>

Caveats

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Examples

See Also

Functions

•	llRot2Left
•	llRot2Fwd
•	llRot2Axis
•	llRot2Angle

Deep Notes

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Signature
function vector llRot2Up( rotation q );