// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Momentary color scrubber
// Not compiled or tested in-world
// Setup: Set FACE to a flat face on a spare prim. Owner-touch and drag across that face. Edit LEFT and RIGHT to choose endpoints.
// Stop / restore: Release the touch and wait two seconds before removing. The watchdog also restores color if touch-end is missed.
// Notes: Preview lasts only during interaction. UV texture transforms do not affect the ST coordinate used for blending.
// License: see LICENSE in this distribution.
// Original Incoprea example. MIT. Not compiled or tested in-world.
integer FACE = 0;
vector LEFT = <0.1, 0.3, 1.0>;
vector RIGHT = <1.0, 0.5, 0.1>;
vector original;
preview()
{
    if (llDetectedKey(0) != llGetOwner() || llDetectedTouchFace(0) != FACE) return;
    vector st = llDetectedTouchST(0);
    if (st.x < 0.0 || st.x > 1.0) return;
    llSetColor(LEFT * (1.0 - st.x) + RIGHT * st.x, FACE);
    llSetTimerEvent(2.0);
}
restore()
{
    llSetColor(original, FACE);
    llSetTimerEvent(0.0);
}
default
{
    state_entry()
    {
        original = llGetColor(FACE);
    }
    touch_start(integer count)
    {
        preview();
    }
    touch(integer count)
    {
        preview();
    }
    touch_end(integer count)
    {
        if (llDetectedKey(0) == llGetOwner()) restore();
    }
    timer()
    {
        restore();
    }
}