$fn = 64;

// --- Parameters ---
// Base dimensions
base_width = 40;
base_height = 80;
base_thickness = 8;

// Hook dimensions
stem_radius = 10;
branch_radius = 7;
tip_radius = 5;

spread_x = 28;      // Distance from center to hook tip
hook_out_z = 42;    // How far the hook extends from the wall
hook_up_y = 35;     // How high the hook goes

// Mounting holes
hole_dia = 5;
hole_head_dia = 10;
hole_spacing = 50;

// --- Geometry ---
difference() {
    union() {
        // Wall plate
        hull() {
            translate([0, base_height/2 - base_width/2, 0])
                cylinder(r=base_width/2, h=base_thickness);
            translate([0, -(base_height/2 - base_width/2), 0])
                cylinder(r=base_width/2, h=base_thickness);
        }

        // Main central stem
        hull() {
            translate([0, -5, 0])
                cylinder(r=stem_radius, h=base_thickness);
            translate([0, 5, base_thickness + 12])
                sphere(r=branch_radius);
        }

        // Left hook arm
        hull() {
            translate([0, 5, base_thickness + 12])
                sphere(r=branch_radius);
            translate([-spread_x, 15, hook_out_z])
                sphere(r=branch_radius);
        }
        
        // Left hook tip
        hull() {
            translate([-spread_x, 15, hook_out_z])
                sphere(r=branch_radius);
            translate([-spread_x, hook_up_y, hook_out_z - 5])
                sphere(r=tip_radius);
        }

        // Right hook arm
        hull() {
            translate([0, 5, base_thickness + 12])
                sphere(r=branch_radius);
            translate([spread_x, 15, hook_out_z])
                sphere(r=branch_radius);
        }
        
        // Right hook tip
        hull() {
            translate([spread_x, 15, hook_out_z])
                sphere(r=branch_radius);
            translate([spread_x, hook_up_y, hook_out_z - 5])
                sphere(r=tip_radius);
        }
    }

    // Top mounting hole
    translate([0, hole_spacing/2, -1]) {
        cylinder(r=hole_dia/2, h=base_thickness + 2);
        translate([0, 0, base_thickness - 2])
            cylinder(r1=hole_dia/2, r2=hole_head_dia/2, h=3.1);
    }

    // Bottom mounting hole
    translate([0, -hole_spacing/2, -1]) {
        cylinder(r=hole_dia/2, h=base_thickness + 2);
        translate([0, 0, base_thickness - 2])
            cylinder(r1=hole_dia/2, r2=hole_head_dia/2, h=3.1);
    }
}