$fn = 64;

// --- PARAMETERS ---
shield_thickness = 4;
detail_thickness = 2;
spool_height = 35;
spool_diameter = 25;
wall_plate_diameter = 55;
wall_plate_thickness = 4;
peg_size = 14;
peg_depth = 10;

// --- LAYOUT ---
// Parts are separated and oriented to print flat on the bed without supports
translate([-45, 0, 0]) shield_part();
translate([45, 0, 0]) wall_mount_part();

// --- MODULES ---

// 2D Profile of the Heater Shield
module shield_outline() {
    intersection() {
        // Curved sides
        translate([-45, 25]) circle(r=85);
        translate([45, 25]) circle(r=85);
        // Flat top cutoff and bounding box
        translate([-50, -60]) square([100, 110]);
    }
}

// Part 1: The Shield (Prints face down)
module shield_part() {
    // Front details (Trim and Cross) - touching the build plate
    color("silver")
    linear_extrude(detail_thickness) {
        // Outer raised trim
        difference() {
            shield_outline();
            offset(r=-4) shield_outline();
        }
        // Crusader style cross
        translate([0, 5]) {
            square([12, 85], center=true); // Vertical bar
            translate([0, 10]) square([65, 12], center=true); // Horizontal bar
        }
    }

    // Main Shield Base
    color("steelblue")
    translate([0, 0, detail_thickness])
    linear_extrude(shield_thickness) {
        shield_outline();
    }

    // Attachment Peg (Plugs into the wall mount)
    color("silver")
    translate([0, 5, detail_thickness + shield_thickness]) {
        // Main peg body
        linear_extrude(peg_depth - 1)
            square([peg_size, peg_size], center=true);
        // Chamfered tip for easy insertion
        translate([0, 0, peg_depth - 1])
            linear_extrude(1, scale=0.8)
                square([peg_size, peg_size], center=true);
    }
}

// Part 2: Wall Mount & Cable Spool (Prints flat on the wall plate)
module wall_mount_part() {
    color("darkgray")
    difference() {
        union() {
            // Wall plate
            cylinder(d=wall_plate_diameter, h=wall_plate_thickness);
            
            // Spool core for wrapping or resting cables
            translate([0, 0, wall_plate_thickness])
                cylinder(d=spool_diameter, h=spool_height);
                
            // Tapered base for extra strength
            translate([0, 0, wall_plate_thickness])
                cylinder(d1=spool_diameter + 8, d2=spool_diameter, h=8);
        }

        // Countersunk screw holes for wall mounting
        for(x = [-20, 20]) {
            translate([x, 0, -1]) {
                // Screw shaft
                cylinder(d=4.5, h=wall_plate_thickness + 2); 
                // Countersink head
                translate([0, 0, wall_plate_thickness - 2])
                    cylinder(d1=4.5, d2=9, h=2.1); 
            }
        }

        // Square socket to receive the shield's peg (with 0.3mm clearance)
        translate([0, 0, wall_plate_thickness + spool_height - peg_depth])
        linear_extrude(peg_depth + 1)
            square([peg_size + 0.6, peg_size + 0.6], center=true);
    }
}