// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Estimate angular speed between two recorded poses
// Not compiled or tested in-world
// Setup: Use a spare owned prim. Set two Euler poses and positive DT. Touch for private calculations.
// Stop / restore: Disable/remove. No camera or object settings are changed.
// Notes: The shortest difference loses revolutions greater than180 degrees between samples; sample fast enough for the intended motion.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Transform planning only.
vector BEFORE=<0.0,0.0,10.0>;
vector AFTER=<0.0,0.0,35.0>;
float DT=0.5;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        if(DT<=0.0)
        {
            llOwnerSay("Positive elapsed time required.");
            return;
        }
        rotation a=llEuler2Rot(BEFORE*DEG_TO_RAD);
        rotation b=llEuler2Rot(AFTER*DEG_TO_RAD);
        rotation relative=b/a;
        float angle=llRot2Angle(relative);
        llOwnerSay("Minimum angular speed rad/s="+(string)(angle/DT)+" deg/s="+(string)(angle*RAD_TO_DEG/DT));
    }
}