Difference between revisions of "LlGetGeometricCenter"
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* The "geometric center" is the average of all linked prim centers. Mathematically, it's the root-relative positions of all linked prims in the linkset added together and divided by the number of prims in the linkset. | * The "geometric center" is the average of all linked prim centers. Mathematically, it's the root-relative positions of all linked prims in the linkset added together and divided by the number of prims in the linkset. | ||
|deep_notes= | |||
<lsl>vector GetGeometricCenter(){ | |||
vector center = ZERO_VECTOR; | |||
integer p = llGetNumberOfPrims(); | |||
//since we skip the root prim, we can ignore the single prim case. | |||
//If we weren't skipping the root, this would be more complicated. | |||
integer i = 1; | |||
while(i < p) | |||
center += llList2Vector(llGetLinkPrimitiveParams(++i, [PRIM_POS_LOCAL]), 0); | |||
return center / p; | |||
}</lsl> | |||
|cat1=Physics | |cat1=Physics | ||
|cat2 | |cat2 | ||
Revision as of 00:00, 29 February 2012
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Summary
Function: vector llGetGeometricCenter( );| 278 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns the vector that is the geometric center of the object relative to the root prim.
Caveats
The "geometric center" is different from the "center" in viewer's build tools and also different from what llRezObject considers to be the "center" of a linkset.
Examples
Notes
- The "geometric center" is the average of all linked prim centers. Mathematically, it's the root-relative positions of all linked prims in the linkset added together and divided by the number of prims in the linkset.
See Also
Functions
| • | llGetCenterOfMass |
Deep Notes
All Issues
~ Search JIRA for related Issues
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SVC-6579 | A | Provide better llGetGeometricCenter function. |
Signature |
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function vector llGetGeometricCenter(); |