LlRot2Fwd

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Contents

Summary

Function: vector llRot2Fwd( rotation q );
18 Function ID
0.0 Delay
10.0 Energy

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

• rotation q

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

Specification

Mathematically equivalent to: 

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

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

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

Examples

See Also

Functions

•  llRot2Left
•  llRot2Up
•  llRot2Axis
•  llRot2Angle

Deep Notes

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