Difference between revisions of "LlLookAt"
Void Singer (talk | contribs) m (added also=llStopLookAt, minor description tweak) |
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|func_id=105|func_sleep=0.0|func_energy=10.0 | |func_id=105|func_sleep=0.0|func_energy=10.0 | ||
|func=llLookAt|p1_type=vector|p1_name=target|p2_type=float|p2_name=strength|p3_type=float|p3_name=damping | |func=llLookAt|p1_type=vector|p1_name=target|p2_type=float|p2_name=strength|p3_type=float|p3_name=damping | ||
|func_footnote= | |func_footnote=To change the position in the same manner use {{LSLG|llMoveToTarget}}. | ||
To change the position in the same manner use {{LSLG|llMoveToTarget}}. | |func_desc=Cause object to point its' '''up''' axis (positive z) towards '''target''' | ||
|func_desc=Cause object | |||
Continues to track '''target''' untill {{LSLG|llStopLookAt}} is called. | |||
If the object isn't physical, the settings don't seem to have any effect except the force must be > 0. For physical objects, the strength seems to be something like viscosity, not the rotating strength, so the weaker it is the faster the rotation happens. The damping value controls how fast the rotation damps out. Low values relative to the strength make it bouncy, often overshooting the target, high values sluggish. The strength and damping values seem to have no relation to the mass of the object. | If the object isn't physical, the settings don't seem to have any effect except the force must be > 0. For physical objects, the strength seems to be something like viscosity, not the rotating strength, so the weaker it is the faster the rotation happens. The damping value controls how fast the rotation damps out. Low values relative to the strength make it bouncy, often overshooting the target, high values sluggish. The strength and damping values seem to have no relation to the mass of the object. | ||
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|examples | |examples | ||
|helpers | |helpers | ||
|also_functions=*{{LSLG|llRotLookAt}} | |also_functions= | ||
*{{LSLG|llRotLookAt}} | |||
*{{LSLG|llStopLookAt}} | |||
|also_events | |also_events | ||
|also_tests | |also_tests | ||
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|permission | |permission | ||
|negative_index | |negative_index | ||
|cat1=Physics | |cat1=Physics | ||
|cat2=Target | |cat2=Target | ||
Revision as of 23:45, 17 January 2008
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: llLookAt( vector target, float strength, float damping );| 0.0 | Forced Delay |
| 10.0 | Energy |
Cause object to point its' up axis (positive z) towards target
Continues to track target untill llStopLookAt is called.
If the object isn't physical, the settings don't seem to have any effect except the force must be > 0. For physical objects, the strength seems to be something like viscosity, not the rotating strength, so the weaker it is the faster the rotation happens. The damping value controls how fast the rotation damps out. Low values relative to the strength make it bouncy, often overshooting the target, high values sluggish. The strength and damping values seem to have no relation to the mass of the object.
| • vector | target | |||
| • float | strength | |||
| • float | damping | – | seconds to critically damp in |
To change the position in the same manner use llMoveToTarget.
Caveats
This does not guarantee that physical objects will wind up pointing at the target. Depending on the shape of the object, the strength and the damping, it may well settle out at a different rotation pointing in a different direction if the damping stops the rotation before the final position is reached.
If the object is physical and not symmetrical it may cause a recoil effect where the object winds up drifting away from it's original position as well as making the final rotation it settles on less accurate.
Examples
See Also
Deep Notes
Signature |
|---|
function void llLookAt( vector target, float strength, float damping ); |