Difference between revisions of "LlAngleBetween"
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(I've copied this from lslwiki but I'm the author so it's all cool.) |
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|helpers | |helpers | ||
|also_functions={{LSL DefineRow||[[llRotBetween]]}} | |also_functions={{LSL DefineRow||[[llRotBetween]]}} | ||
{{LSL DefineRow||[[llRot2Angle]]|Similar functionality used for the Axis-Angle format}} | |||
|also_events | |also_events | ||
|also_tests | |also_tests | ||
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|deepnotes=<lsl>float AngleBetween(rotation a, rotation b) | |deepnotes=<lsl>float AngleBetween(rotation a, rotation b) | ||
{ | { | ||
return 2 * llAcos((a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s) | return 2.0 * llAcos((a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s) | ||
/ llSqrt((a.x * a.x + a.y * a.y + a.z * a.z + a.s * a.s) | |||
* (b.x * b.x + b.y * b.y + b.z * b.z + b.s * b.s))); | |||
}</lsl> | }</lsl> | ||
|cat1=Math/3D | |cat1=Math/3D | ||
Revision as of 23:50, 15 March 2009
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: float llAngleBetween( rotation a, rotation b );| 174 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a float that is the angle between rotation a and b.
| • rotation | a | – | start rotation | |
| • rotation | b | – | end rotation |
Caveats
Examples
See Also
Functions
| • | llRotBetween | |||
| • | llRot2Angle | – | Similar functionality used for the Axis-Angle format |
Deep Notes
<lsl>float AngleBetween(rotation a, rotation b) {
return 2.0 * llAcos((a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s)
/ llSqrt((a.x * a.x + a.y * a.y + a.z * a.z + a.s * a.s)
* (b.x * b.x + b.y * b.y + b.z * b.z + b.s * b.s)));
}</lsl>
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function float llAngleBetween( rotation a, rotation b ); |