$fn = 64;

// --- PARAMETERS ---
cable_dia = 6.2;       // Diameter of the cable hole (fits standard 5-6mm cables)
cable_spacing = 13.0;  // Center-to-center distance between cables
snap_gap = 3.5;        // Width of the top slit for snapping cables in
cable_z = 5.5;         // Z-height of the cable center

// --- MAIN ASSEMBLY ---
// The design uses a solid dragon paw shape, then subtracts the cable channels.
// This ensures perfect functional alignment while maintaining an organic look.
difference() {
    union() {
        base_pad();
        dragon_palm();
        dragon_fingers();
    }
    cable_cutouts();
    flatten_bottom();
}

// --- MODULES ---

// Creates a rounded, flat base for double-sided tape adhesion
module base_pad() {
    hull() {
        // Back corners
        translate([-22, -18, 0]) cylinder(h=3, r=4);
        translate([ 22, -18, 0]) cylinder(h=3, r=4);
        // Front corners
        translate([-18,  14, 0]) cylinder(h=3, r=3);
        translate([ 18,  14, 0]) cylinder(h=3, r=3);
    }
}

// Creates the main body/heel of the paw
module dragon_palm() {
    // Main palm mass
    translate([0, -5, 6]) scale([1, 0.75, 0.45]) sphere(r=26);
    
    // Decorative scales on the back of the hand
    for(x = [-13, 0, 13]) {
        translate([x, -14, 14]) scale([1, 1.2, 0.5]) sphere(r=4);
        translate([x, -20, 11]) scale([1, 1.2, 0.5]) sphere(r=3);
    }
}

// Creates the 4 fingers that wrap around the 3 cable slots
module dragon_fingers() {
    // Finger base X positions
    for(x = [-19.5, -6.5, 6.5, 19.5]) {
        
        // Splay outer fingers slightly outward for a natural look
        splay = (x < -10) ? -3 : ((x > 10) ? 3 : 0);
        
        // Joint positions [X, Y, Z]
        p1 = [x, -2, 7];
        p2 = [x + splay*0.3, 8, 12];
        p3 = [x + splay*0.6, 18, 8];
        p4 = [x + splay*0.8, 26, 4];
        p5 = [x + splay, 32, 0]; // Talon tip
        
        // Joint thicknesses
        r1 = 5.0;
        r2 = 4.5;
        r3 = 3.5;
        r4 = 2.5;
        r5 = 1.0;
        
        // Finger fleshy segments
        hull() { translate(p1) sphere(r=r1); translate(p2) sphere(r=r2); }
        hull() { translate(p2) sphere(r=r2); translate(p3) sphere(r=r3); }
        hull() { translate(p3) sphere(r=r3); translate(p4) sphere(r=r4); }
        hull() { translate(p4) sphere(r=r4); translate(p5) sphere(r=r5); }
        
        // Knuckle spikes
        translate(p2) rotate([-20, 0, 0]) cylinder(h=8, r1=r2*0.8, r2=0.5);
        translate(p3) rotate([-30, 0, 0]) cylinder(h=6, r1=r3*0.8, r2=0.5);
    }
}

// Hollows out the paths for the cables
module cable_cutouts() {
    for(x = [-cable_spacing, 0, cable_spacing]) {
        // Main cylindrical tunnel for the cable
        translate([x, -30, cable_z]) 
            rotate([-90, 0, 0]) 
            cylinder(h=70, d=cable_dia);
            
        // Top slit to allow the cable to be pressed in
        translate([x - snap_gap/2, -30, cable_z]) 
            cube([snap_gap, 70, 20]);
            
        // Flared openings to prevent cable wear and ease insertion
        translate([x, -25, cable_z]) 
            rotate([-90, 0, 0]) 
            cylinder(h=8, d1=cable_dia+4, d2=cable_dia);
            
        translate([x, 25, cable_z]) 
            rotate([-90, 0, 0]) 
            cylinder(h=8, d1=cable_dia, d2=cable_dia+4);
    }
}

// Ensures the bottom is perfectly flat for printing and mounting
module flatten_bottom() {
    translate([0, 0, -50]) cube([100, 100, 100], center=true);
}