Second Life Wiki - User contributions [en]

LlAxisAngle2Rot

2014-02-16T06:28:47Z

Rob Niosaki:

{{LSL_Function
|func=llAxisAngle2Rot
|func_id=169|func_sleep=0.0|func_energy=10.0
|return_type=rotation
|p1_type=vector|p1_name=axis|p1_desc
|p2_type=float|p2_name=angle|p2_desc=expressed in radians.
|return_text=that is a generated '''angle''' about '''axis'''
|func_footnote=
'''axis''' need not be [[llVecNorm|normalized]], only the direction is important.

'''angle''' need to be between the value 0<angle<PI (higher values than PI lead to 2*PI-angle)
, because a rotation is not really a rotation (it is more of a rigid motion/mirroring)
,the final destination is the rotation.
(in other words: it doesn't matter wether you rotate left by 90 degrees or right by 270 degrees it will return the same rotation)
|spec
|caveats
|examples=<lsl>default
{
state_entry()
{
vector axis = <0.0, 0.0, 1.0>;
float angle = 90.0 * DEG_TO_RAD;
rotation rot = llAxisAngle2Rot(axis, angle);
vector euler = llRot2Euler(rot) * RAD_TO_DEG;

llOwnerSay((string) euler);
//Says <0.0, 0.0, 90.0> since it is rotating 90 degrees on the Z axis caused by the 1.0 placed in the Z vector spot.
}
}</lsl>

|helpers
|also_functions=
{{LSL DefineRow||[[llRot2Angle]]|}}
{{LSL DefineRow||[[llRot2Axis]]|}}
|also_events
|also_articles
|also
|notes
|cat1=Math/3D
|cat2=Rotation
|cat3
|cat4
|deepnotes=<lsl>rotation llAxisAngle2Rot( vector axis, float angle )
{
axis = llVecNorm( axis ) * llSin( angle/2 );
return <axis.x, axis.y, axis.z, llCos( angle/2 )>;
}</lsl>
}}

LlAxisAngle2Rot

2014-02-16T06:17:40Z

Rob Niosaki:

{{LSL_Function
|func=llAxisAngle2Rot
|func_id=169|func_sleep=0.0|func_energy=10.0
|return_type=rotation
|p1_type=vector|p1_name=axis|p1_desc
|p2_type=float|p2_name=angle|p2_desc=expressed in radians.
|return_text=that is a generated '''angle''' about '''axis'''
|
|func_footnote='''axis''' need not be [[llVecNorm|normalized]], only the direction is important.
|
|func_footnote='''angle''' need to be between the value 0<angle<PI (higher values than PI lead to 2*PI-angle) , because a rotation is not really a rotation (it is more of a rigid motion/mirroring)
,the final destination is the rotation. (in other words: it doesn't matter wether you rotate left by 90 degrees or right by 270 degrees)
|spec
|caveats
|examples=<lsl>default
{
state_entry()
{
vector axis = <0.0, 0.0, 1.0>;
float angle = 90.0 * DEG_TO_RAD;
rotation rot = llAxisAngle2Rot(axis, angle);
vector euler = llRot2Euler(rot) * RAD_TO_DEG;

llOwnerSay((string) euler);
//Says <0.0, 0.0, 90.0> since it is rotating 90 degrees on the Z axis caused by the 1.0 placed in the Z vector spot.
}
}</lsl>

|helpers
|also_functions=
{{LSL DefineRow||[[llRot2Angle]]|}}
{{LSL DefineRow||[[llRot2Axis]]|}}
|also_events
|also_articles
|also
|notes
|cat1=Math/3D
|cat2=Rotation
|cat3
|cat4
|deepnotes=<lsl>rotation llAxisAngle2Rot( vector axis, float angle )
{
axis = llVecNorm( axis ) * llSin( angle/2 );
return <axis.x, axis.y, axis.z, llCos( angle/2 )>;
}</lsl>
}}

LlAxisAngle2Rot

2014-02-16T06:16:17Z

Rob Niosaki:

{{LSL_Function
|func=llAxisAngle2Rot
|func_id=169|func_sleep=0.0|func_energy=10.0
|return_type=rotation
|p1_type=vector|p1_name=axis|p1_desc
|p2_type=float|p2_name=angle|p2_desc=expressed in radians.
|return_text=that is a generated '''angle''' about '''axis'''
|func_footnote='''axis''' need not be [[llVecNorm|normalized]], only the direction is important.
|func_footnote='''angle''' need to be between the value 0<angle<PI (higher values than PI lead to 2*PI-angle) , because a rotation is not really a rotation (it is more of a rigid motion/mirroring)
,the final destination is the rotation. (in other words: it doesn't matter wether you rotate left by 90 degrees or right by 270 degrees)
|spec
|caveats
|examples=<lsl>default
{
state_entry()
{
vector axis = <0.0, 0.0, 1.0>;
float angle = 90.0 * DEG_TO_RAD;
rotation rot = llAxisAngle2Rot(axis, angle);
vector euler = llRot2Euler(rot) * RAD_TO_DEG;

llOwnerSay((string) euler);
//Says <0.0, 0.0, 90.0> since it is rotating 90 degrees on the Z axis caused by the 1.0 placed in the Z vector spot.
}
}</lsl>

|helpers
|also_functions=
{{LSL DefineRow||[[llRot2Angle]]|}}
{{LSL DefineRow||[[llRot2Axis]]|}}
|also_events
|also_articles
|also
|notes
|cat1=Math/3D
|cat2=Rotation
|cat3
|cat4
|deepnotes=<lsl>rotation llAxisAngle2Rot( vector axis, float angle )
{
axis = llVecNorm( axis ) * llSin( angle/2 );
return <axis.x, axis.y, axis.z, llCos( angle/2 )>;
}</lsl>
}}