// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Face a target while preserving an upright frame
// Not compiled or tested in-world
// Setup: Use a spare owned prim. Set ORIGIN and TARGET with differentXY positions. Touch for private calculations.
// Stop / restore: Disable/remove. No camera or object settings are changed.
// Notes: Assumes local+X is the model front; no actual rotation is applied.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Transform planning only.
vector ORIGIN=<4.0,5.0,1.0>;
vector TARGET=<8.0,2.0,7.0>;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        vector delta=TARGET-ORIGIN;
        delta.z=0.0;
        if(llVecMag(delta)<0.000001)
        {
            llOwnerSay("Target has no horizontal bearing.");
            return;
        }
        float yaw=llAtan2(delta.y,delta.x);
        llOwnerSay("Yaw degrees="+(string)(yaw*RAD_TO_DEG)+" rotation="+(string)llEuler2Rot(<0.0,0.0,yaw>));
    }
}