$fn = 64;

// --- Parameters ---
cable_diameter = 8;      // Diameter of the cables
cable_spacing = 28;      // Distance between each cable clip
claw_width = 12;         // Thickness of the claw along the cable
base_thickness = 6;      // Total thickness of the base plate
base_margin = 14;        // Extra space on the ends for screw holes

// Derived variables
cr = cable_diameter / 2;

// Module to create the cylindrical joints of the claw
module joint(x, z, r) {
    translate([x, 0, z]) 
        rotate([90, 0, 0]) 
        cylinder(h=claw_width, r=r, center=true);
}

// Module for a single dragon claw clip
module dragon_claw() {
    difference() {
        union() {
            // Main organic claw shape (knuckles)
            hull() { joint(-cr-2, 0, 6); joint(-cr-1, cr+4, 5); }
            hull() { joint(-cr-1, cr+4, 5); joint(0, cr*2+3, 4.5); }
            hull() { joint(0, cr*2+3, 4.5); joint(cr+1, cr+4, 3.5); }

            // Sharp talon tip curling over the cable
            hull() {
                joint(cr+1, cr+4, 3.5);
                translate([cr+0.5, 0, cr+2]) 
                    scale([1, 0.6, 1]) 
                    sphere(r=1.5);
            }

            // Dragon scales / dorsal ridges on the back of the claw
            translate([-cr-1, 0, cr+4]) scale([1, 0.5, 1.2]) sphere(r=6);
            translate([0, 0, cr*2+3]) scale([1, 0.5, 1.2]) sphere(r=5.5);
            translate([cr+1, 0, cr+4]) scale([1, 0.5, 1.2]) sphere(r=4.5);
        }

        // Cut out the perfectly round cable channel
        // This ensures the inside is smooth and fits the cable exactly
        rotate([90, 0, 0]) 
            cylinder(h=claw_width+2.1, r=cr, center=true);

        // Flatten the bottom for a clean merge with the base plate
        translate([0, 0, -50]) 
            cube([100, 100, 100], center=true);
    }
}

// --- Main Assembly ---
difference() {
    union() {
        // Rounded base plate
        hull() {
            translate([-(cable_spacing + base_margin), 0, -base_thickness+2])
                cylinder(h=base_thickness, r=claw_width/2 + 4);
            translate([(cable_spacing + base_margin), 0, -base_thickness+2])
                cylinder(h=base_thickness, r=claw_width/2 + 4);
        }

        // Add the three dragon claws
        for(i = [-1, 0, 1]) {
            translate([i * cable_spacing, 0, 0]) 
                dragon_claw();
        }
    }

    // Cable channels (cradles cut into the base for stability)
    for(i = [-1, 0, 1]) {
        translate([i * cable_spacing, 0, cr])
            rotate([90, 0, 0])
            cylinder(h=claw_width + 20, r=cr, center=true);
    }

    // Mounting screw holes on the ends
    for(i = [-1, 1]) {
        // Main screw hole (4.4mm for standard screws)
        translate([i * (cable_spacing + base_margin - 2), 0, -10])
            cylinder(h=20, r=2.2); 
        
        // Countersink for the screw head
        translate([i * (cable_spacing + base_margin - 2), 0, -0.5])
            cylinder(h=5, r1=2.2, r2=4.5);
    }
}