// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Plan a crossed belt route
// Not compiled or tested in-world
// Setup: Place in a spare owned prim. Set radii and center distance greater than their sum. Touch for private results.
// Stop / restore: Disable/remove; no scene properties change.
// Notes: Crossed belts reverse relative rotation; a real belt needs clearance where it crosses. This is geometry only.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Planning only.
float R1=1.5;
float R2=1.0;
float DISTANCE=6.0;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        if(R1<=0.0||R2<=0.0||DISTANCE<=R1+R2)
        {
            llOwnerSay("Pulleys need sufficient separation.");
            return;
        }
        float sum=R1+R2;
        float angle=llAsin(sum/DISTANCE);
        float straight=llSqrt(DISTANCE*DISTANCE-sum*sum);
        llOwnerSay("Crossed length="+(string)(2.0*straight+(PI+2.0*angle)*sum)+" wrap degrees="+(string)((PI+2.0*angle)*RAD_TO_DEG));
    }
}