$fn=32;
n = 3;

thickness = 1.3;
nodeSize = 2;


module level(number, angle=70, step=10, length=10) {
    for(k=[0:number-1]){
    translate([0,0,k*n*step]){
        for(i=[0:n-1]){
            translate([0,0,i*step])
            rotate(a=[(180-angle)/2+i/(n-1)*angle,90+180,0]){
                cylinder(length, d=thickness);
                translate([0,0,length])sphere(d=nodeSize);
            } 
        }
        if(k<number-1){
            for(i=[0:n-1]){
            translate([0,0,i*step])
            rotate(a=[(180-angle)/2+i/(n-1)*angle,90+180,0]){
                rotate(a=[0,90,0])
                translate([-length,0,-thickness/2])
                cylinder(n*step+thickness, d=thickness);
            } 
        }
    }
    }
    }
}

//
//num = 6;
//
//
//cylinder(n*num*10-10, d=thickness);
//level(number=num, angle=70, step=2, length=20);
//
//
//angle=70;
//step1=2;
//length=20;
//
//for(i=[0:n-1]){
//    translate([0,0,i*step1]){
//    a1= [0,0,-angle/2+i/(n-1)*angle];
//    rotate(a1)
//    translate([0,-length,0])
//    rotate(-a1)
//    {
//        color("Magenta")
//        level(number=2, angle=50, step=n*step1, length=15);
//    } 
//    }
//}


module recurs(depth, number= n^2, angle=90, step=2, length=20){
    if(depth <= 1){
        level(number, angle, step, length);
    }else{
        level(number, angle, step, length);
        
        
        newnumber = round(number/n);
        newangle = angle*0.65;
        newstep = n*step;
        newlength = length*0.7;
        
        
        for(i=[0:n-1]){
        translate([0,0,i*step]){
        a1= [0,0,-angle/2+i/(n-1)*angle];
        rotate(a1)
        translate([0,-length,0])
        rotate(0)
        {
            color("Magenta")
            recurs(depth=depth-1,number=newnumber, angle=newangle, step=newstep, length=newlength);
        } 
        }
    }
    }
}


rotate([0,180,0]){
rotate([- 90,0,0]){

num = n*n*n*2*2-2;
cylinder(num, d=thickness);
for(i=[0:num/2]){
    translate([0,0,i*2])sphere(d=nodeSize);
}
recurs(3, number=n*n*2, angle=75, length=20);
    
}

translate([0,0,-2])
linear_extrude(2)
translate([-0.5,-2,0])
square([1, 110]);

}