// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Touch-sampled nearest-seed regions
// Not compiled or tested in-world
// Setup: Put in a spare ordinary cube you own. Touch different places on one face to sample the procedural pattern at live surface coordinates. Edit the constants to design a pattern.
// Stop / restore: Disable/remove. Only private owner messages are produced; no texture or tint is applied.
// Notes: The difference between first and second distance helps reveal cell boundaries but is not the exact distance to every Voronoi edge. Surface coordinates depend on the viewer and mesh; ordinary prim faces are the clearest test surface.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Live surface-coordinate sampler.
list SEEDS=[<0.2,0.2,0.0>,<0.8,0.25,0.0>,<0.35,0.8,0.0>,<0.8,0.8,0.0>];
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        vector uv=llDetectedTouchST(0);
        if(llDetectedTouchFace(0)<0||uv==TOUCH_INVALID_TEXCOORD)
        {
            llOwnerSay("Surface coordinates unavailable.");
            return;
        }
        vector p=2.0*uv-<1.0,1.0,0.0>;
        integer n=llGetListLength(SEEDS);
        if(n<2)
        {
            llOwnerSay("Need two seeds.");
            return;
        }
        integer best=-1;
        float first=1000000.0;
        float second=1000000.0;
        integer i;
        for(i=0;i<n;++i)
        {
            float distance=llVecDist(uv,llList2Vector(SEEDS,i));
            if(distance<first)
            {
                second=first;
                first=distance;
                best=i;
            }
            else if(distance<second)second=distance;
        }
        llOwnerSay("Cell="+(string)best+" nearest distance="+(string)first+" separation score="+(string)(second-first));
    }
}