/*
include <../../config.scad>;
use <./tube_clamp_round_3_way_through_116_functions.scad>;
*/

module square_tube_joint_n_way(tube_diameter, tube_thickness, n_pegs) {
    length_peg = 2 * tube_diameter;
    union() {
        color("black") cube(tube_diameter, center = true);
        /*
        // Method 1: no good
        for (index_peg = [0 : 1 : n_pegs - 1]) {
            color("gray") rotate([0, 0, 90 * index_peg]) translate([tube_diameter / 2 + length_peg / 2, 0, 0]) cube([length_peg, tube_diameter - tube_thickness * 2, tube_diameter - tube_thickness * 2], center = true);
        }
        */
        if (n_pegs >= 2) {
            for (index_peg = [0 : 1 : 1]) {
                color("gray") rotate([0, 0, 90 * index_peg]) translate([tube_diameter / 2 + length_peg / 2, 0, 0]) cube([length_peg, tube_diameter - tube_thickness * 2, tube_diameter - tube_thickness * 2], center = true);
            }
        }
        if (n_pegs >= 3) {
            for (index_peg = [0 : 1 : (n_pegs == 3 ? 0 : 1)]) {
                color("gray") mirror([0, 0, index_peg]) translate([0, 0, tube_diameter / 2 + length_peg / 2]) cube([tube_diameter - tube_thickness * 2, tube_diameter - tube_thickness * 2, length_peg], center = true);
            }
        }
        if (n_pegs >= 5) {
            color("gray") translate([0, -(tube_diameter / 2 + length_peg / 2), 0]) cube([tube_diameter - tube_thickness * 2, length_peg, tube_diameter - tube_thickness * 2], center = true);
        }
    }
    // Shopping
    echo(str("Square tube joint: Tube joint Φ", tube_diameter, "mm ", n_pegs, "-Way - x1"));
}

// test output
// square_tube_joint_n_way(D_BEAM_SKELETON, T_BEAM_SKELETON, 5);
// translate([200, 0, 0]) square_tube_joint_n_way(D_BEAM_SKELETON, T_BEAM_SKELETON, 3);

for (count_pegs = [2 : 1 : 5]) {
    translate([100 * count_pegs, 0, 0]) square_tube_joint_n_way(D_BEAM_SKELETON, T_BEAM_SKELETON, count_pegs);
}