LlRot2Left

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Contents

Summary

Function: vector llRot2Left( rotation q );
19 Function ID
0.0 Delay
10.0 Energy

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

• rotation q

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

Specification

Mathematically equivalent to: 

ret = llVecNorm(<0., 1., 0.> * q);

If q is known to be a unit quaternion then it can be simplified as: 

ret = <0., 1., 0.> * q;

Examples

See Also

Functions

•  llRot2Up
•  llRot2Fwd
•  llRot2Axis
•  llRot2Angle

Deep Notes

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