Difference between revisions of "LlTargetOmega"
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m (How to stop rotation when additional forces have been applied together with llTargetOmega) |
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* Set the gain to zero to disable and remove the rotation behavior, eg llTargetOmega(ZERO_VECTOR, 0, 0); | * Set the gain to zero to disable and remove the rotation behavior, eg llTargetOmega(ZERO_VECTOR, 0, 0); | ||
** A spinrate of 0 with a nonzero gain causes the object to try to stop all spin, rather than simply clearing a previous llTargetOmega() call. | ** A spinrate of 0 with a nonzero gain causes the object to try to stop all spin, rather than simply clearing a previous llTargetOmega() call. | ||
* If there are other forces applied to a prim together with llTargetOmega(), (like using llSetForce to make the object float), use llTargetOmega(-llGetOmega(), 0., 1.) to cancel spin. Note that the gain must be non-zero, but not necessarily 1. | |||
|cat1=Physics | |cat1=Physics | ||
|cat2=Effects | |cat2=Effects | ||
Revision as of 15:01, 23 January 2010
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: llTargetOmega( vector axis, float spinrate, float gain );| 133 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Rotates the object around axis at spinrate * llVecMag(axis) in radians per second with strength gain.
| • vector | axis | – | arbitrary axis to rotate the object around | |
| • float | spinrate | – | rate of rotation in radians per second | |
| • float | gain | – | also modulates the final spinrate and disables the rotation behavior if zero |
Specification
Physics
- If the object is not physical then the effect is entirely client side. The rotation experienced by the user cannot be detected or queried by script.
- If the object is physical then the physical representation is updated regularly. The rotation experienced by the user can be detected or queried by script.
Link Sets
- If the script is attached to the root prim, the entire object rotates around the region axis
- If the object is attached then it rotates around the attachment axis
- If the script is attached to a child prim, the prim rotates around the local axis
- A Child prim can rotate around its own axis while the entire object rotates around another axis.
Caveats
- If the object is not physical then the rotation is only a client side effect and it will collide as non-moving geometry.
Examples
<lsl>//rotates the x axis once per second, // rotates the y axis 3 times per second, // rotates the z axis once every two seconds. // combined the rate is about 3.20156 revolutions per second
llTargetOmega(<1.0,3.0,0.5>,TWO_PI,1.0);</lsl>Notes
- Use llVecNorm on axis so that spinrate actually represents the rate of rotation.
- Set the gain to zero to disable and remove the rotation behavior, eg llTargetOmega(ZERO_VECTOR, 0, 0);
- A spinrate of 0 with a nonzero gain causes the object to try to stop all spin, rather than simply clearing a previous llTargetOmega() call.
- If there are other forces applied to a prim together with llTargetOmega(), (like using llSetForce to make the object float), use llTargetOmega(-llGetOmega(), 0., 1.) to cancel spin. Note that the gain must be non-zero, but not necessarily 1.
Deep Notes
Tests
| • | llTargetOmega test |
Signature |
|---|
function void llTargetOmega( vector axis, float spinrate, float gain ); |