// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Inspect the touched surface frame
// Not compiled or tested in-world
// Setup: Touch a visible surface as owner.
// Stop / restore: Remove or disable. This inspector changes no build properties.
// Notes: These are viewer-supplied touch vectors in region coordinates. Invalid or degenerate data is rejected; no object is rotated.
// License: see LICENSE in this distribution.
// Original Incoprea example. MIT.
default
{
    touch_start(integer count)
    {
        if(llDetectedKey(0)!=llGetOwner()) return;
        if(llDetectedTouchFace(0)==TOUCH_INVALID_FACE)
        {
            llOwnerSay("Surface data unavailable.");
            return;
        }
        vector normal=llDetectedTouchNormal(0);
        vector binormal=llDetectedTouchBinormal(0);
        if(llVecMag(normal)<0.0001 || llVecMag(binormal)<0.0001)
        {
            llOwnerSay("Degenerate touch frame.");
            return;
        }
        vector tangent=llVecNorm(binormal % normal);
        llOwnerSay("Normal: "+(string)normal+" / binormal: "+(string)binormal+" / tangent: "+(string)tangent);
    }
    changed(integer flags)
    {
        if(flags & CHANGED_OWNER) llResetScript();
    }
}