$fn=64;

// --- Parameters ---
cable_diameter = 5.0;     // Diameter of the cable to clip
clip_thickness = 2.5;     // Thickness of the clip walls
skull_size = 24;          // Base radius of the cranium
eye_radius = 9;           // Radius of the eye sockets

// --- Modules ---
module skull_body() {
    // Cranium
    translate([0, 0, 28]) scale([1, 1.15, 1]) sphere(r=skull_size);
    
    // Cheekbones
    translate([-13, -11, 20]) sphere(r=8);
    translate([13, -11, 20]) sphere(r=8);
    
    // Jaw
    hull() {
        translate([0, -4, 18]) cube([32, 16, 10], center=true);
        translate([0, -12, 4]) cube([20, 12, 8], center=true);
    }
}

module skull_cuts() {
    // Eye sockets
    translate([-12, -15, 28]) rotate([90, 0, 0]) cylinder(r=eye_radius, h=30, center=true);
    translate([12, -15, 28]) rotate([90, 0, 0]) cylinder(r=eye_radius, h=30, center=true);
    
    // Nose cavity
    translate([0, -20, 16]) rotate([45, 0, 0]) rotate([0, 45, 0]) cube([8, 8, 20], center=true);
    
    // Teeth lines
    for(i=[-2:2]) {
        translate([i*3.5, -15, 4]) cube([1.2, 20, 8], center=true);
    }
    // Horizontal mouth line
    translate([0, -15, 4]) cube([22, 20, 1.2], center=true);
}

module cable_clip() {
    difference() {
        union() {
            // Main cylindrical clip body
            cylinder(r=cable_diameter/2 + clip_thickness, h=12, center=true);
            // Anchor block to merge solidly into the back of the eye socket
            translate([0, 5, 0]) cube([cable_diameter + clip_thickness*2, 10, 12], center=true);
        }
        // Inner cutout for the cable
        cylinder(r=cable_diameter/2, h=14, center=true);
        // Front slot for snapping the cable in
        translate([0, -5, 0]) cube([cable_diameter*0.75, 10, 14], center=true);
    }
}

// --- Main Assembly ---
difference() {
    union() {
        // The hollowed-out skull
        difference() {
            skull_body();
            skull_cuts();
        }
        
        // Cable clips placed inside the eye sockets
        translate([-12, -14, 28]) cable_clip();
        translate([12, -14, 28]) cable_clip();
    }
    
    // Bounding box cut to ensure a perfectly flat, 3D-printable bottom
    translate([0, 0, -50]) cube([100, 100, 100], center=true);
}