$fn = 64;

// --- Parameters ---

// Hexagonal plug (sized for Honeycomb Storage Wall standard)
hex_flat_to_flat = 11.4;
hex_depth = 9;
hex_radius = hex_flat_to_flat / sqrt(3);

// Headphone hanger dimensions
base_thick = 4;
hook_width = 35;
hook_radius = 4;

module hex_plug() {
    // Tapered hex plug for easy insertion, overlapping slightly to ensure manifold
    translate([0.1, 0, 0])
    rotate([0, -90, 0])
    rotate([0, 0, 30])
    cylinder(h=hex_depth + 0.1, r1=hex_radius, r2=hex_radius - 0.4, $fn=6);
}

module rounded_base() {
    // Flat rounded plate that rests against the wall for stability
    hull() {
        for(y = [-hook_width/2 + 2, hook_width/2 - 2]) {
            for(z = [-18, 12]) {
                translate([base_thick/2, y, z])
                rotate([0, 90, 0])
                cylinder(r=2, h=base_thick, center=true);
            }
        }
    }
}

module hanger_arm() {
    // Center coordinates defining the sweeping path of the hook
    p0 = [base_thick, 0, 10];    // Top of base attachment
    p1 = [base_thick, 0, -15];   // Bottom of base attachment
    p2 = [25, 0, -10];           // Start of resting bed
    p3 = [45, 0, -15];           // Middle of resting bed (dip for headband)
    p4 = [65, 0, -10];           // End of resting bed
    p5 = [75, 0, 5];             // Upward lip to prevent sliding

    // Construct the arm using hulls between points
    hull() {
        translate(p0) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
        translate(p1) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
        translate(p2) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
    }
    hull() {
        translate(p2) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
        translate(p3) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
    }
    hull() {
        translate(p3) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
        translate(p4) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
    }
    hull() {
        translate(p4) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
        translate(p5) rotate([90, 0, 0]) cylinder(r=hook_radius, h=hook_width, center=true);
    }
}

// --- Assembly ---
// Best printed on its side for maximum arm strength (rotate 90 degrees in slicer)
union() {
    hex_plug();
    rounded_base();
    hanger_arm();
}