llAxes2Rot

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/LSL

Axes2Rot

llAxes2Rot

Summary

Function: rotation llAxes2Rot( vector fwd, vector left, vector up );

17	Function ID
0.0	Forced Delay
10.0	Energy

Returns a rotation that is defined by the 3 coordinate axes

• vector	fwd
• vector	left
• vector	up

All three vectors must be mutually orthogonal unit vectors.

Caveats

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Examples

<lsl> default {

   state_entry()
   {
       vector i = <  1.0,  0.0,  0.0>;
       vector j = <  0.0,  1.0,  0.0>;
       vector k = <  0.0,  0.0,  1.0>;

       rotation rot = llAxes2Rot( j, -i, k );

       llSay(0, (string) (llRot2Euler(rot) * RAD_TO_DEG) );
   }

}</lsl>

This script shows that (j, -i, k) is obtained by rotating (i, j, k) 90 degrees around z direction.

Notes

Technically, only the first two vectors are needed to define this rotation, which can be done by calling:

llAxes2Rot(fwd, left, fwd % left);

Deep Notes

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Signature
function rotation llAxes2Rot( vector fwd, vector left, vector up );