// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Touch-sampled repeating circular dots
// 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: Dot radius is in cell units; a radius below0.5 keeps neighboring dots separate. 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.
float REPEATS=5.0;
float RADIUS=0.3;
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>;
        if(REPEATS<=0.0||RADIUS<=0.0||RADIUS>0.5)
        {
            llOwnerSay("Invalid dot settings.");
            return;
        }
        float x=uv.x*REPEATS;
        float y=uv.y*REPEATS;
        x=x-llFloor(x)-0.5;
        y=y-llFloor(y)-0.5;
        float distance=llSqrt(x*x+y*y)-RADIUS;
        llOwnerSay("Dot signed distance="+(string)distance+" inside="+(string)(distance<=0.0));
    }
}