// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Rotate a UV coordinate about a pivot
// Not compiled or tested in-world
// Setup: Place in a spare owned prim. Set UV, PIVOT and ANGLE degrees. Touch for owner-only output.
// Stop / restore: Remove/disable. The script calculates only; no scene properties change.
// Notes: The result may leave0..1 and wrap on repeating textures. This is coordinate math, not a prim texture mutation.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Planning only.
vector UV=<0.2,0.8,0.0>;
vector PIVOT=<0.5,0.5,0.0>;
float ANGLE=30.0;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        float a=ANGLE*DEG_TO_RAD;
        vector q=UV-PIVOT;
        vector result=PIVOT+<q.x*llCos(a)-q.y*llSin(a),q.x*llSin(a)+q.y*llCos(a),0.0>;
        llOwnerSay("Rotated UV="+(string)result);
    }
}