# OsSlerp

### From OpenSimulator

rotation osSlerp(rotation a, rotation b, float ratio);
| |

Returns a rotation that is the spherical interpolation of a and b, acording to ratio that can be from 0 (result is a) to 1 (result is b) | |

Threat Level |
None |

Permissions |
Use of this function is always allowed by default |

Delay |
0 seconds |

Example(s)
| |

//Test osSlerp. Kayaker Mangic Sept 2019 //This isn't the right way to wiggle a stick (llSetKeyframedMotion is better) //but it does demostrate osSlerp working! //Put this script in a prim that is long in the X direction, //it will wave it's tip around in a figure 8 (infinity) pattern. rotation lastrot=ZERO_ROTATION; //slerp between these two rotations rotation nextrot=ZERO_ROTATION; float t=0.0; //parameter for calculating angles to slerp between float ratio=1.0; //does 10 slerp steps of 0.1 between last and next default { state_entry() { llSetTimerEvent(0.1); } timer() { ratio += 0.1; //step in 0.1 incriments if (ratio>1.0) //between 0 and 1 { ratio = 0.1; //start over lastrot=nextrot; //save the last rotation t += PI/10.0; //bump t to generate points on a Lissajous curve float y=llSin(t); //this will generate points around an float z=llSin(2.0*t); //infinity sympol vector fwd=llVecNorm(<2.0,y,z>); //tip of this vector carves out the shape vector lft=llVecNorm(<0,0,1>%fwd); //convert that into a rotation nextrot = llAxes2Rot(fwd,lft,fwd%lft); //this will be the next rotation to slerp to } rotation rot=osSlerp(lastrot,nextrot,ratio); //slerp generates rotations between these llSetRot(rot); //rotate to that. } } | |

Notes
| |

Implemented Set, 2019 by Ubit Umarov |