$fn=64;

// --- Parameters ---
// Total width of the organizer (ALEX drawer internal width is ~292mm, 145mm fits 2 side-by-side)
total_width = 145; 

// Total depth of the organizer (ALEX drawer internal depth is ~522mm, 130mm fits 4 front-to-back)
total_depth = 130; 

// Height of the organizer (ALEX shallow drawer max clearance is ~70mm)
height = 50; 

// Number of compartments in the X direction
cols = 2; 

// Number of compartments in the Y direction
rows = 1; 

// Wall and base thickness
wall_thickness = 1.6;
base_thickness = 1.6;

// Outer corner radius
corner_radius = 4;


// --- Calculated Variables ---
comp_w = (total_width - (cols + 1) * wall_thickness) / cols;
comp_d = (total_depth - (rows + 1) * wall_thickness) / rows;
inner_r = max(0.5, corner_radius - wall_thickness);


// --- Modules ---
module rounded_box(w, d, h, r) {
    hull() {
        translate([r, r, 0]) cylinder(h=h, r=r);
        translate([w-r, r, 0]) cylinder(h=h, r=r);
        translate([r, d-r, 0]) cylinder(h=h, r=r);
        translate([w-r, d-r, 0]) cylinder(h=h, r=r);
    }
}


// --- Main Geometry ---
difference() {
    // Outer shell
    rounded_box(total_width, total_depth, height, corner_radius);
    
    // Inner compartments
    for (c = [0 : cols - 1]) {
        for (r_idx = [0 : rows - 1]) {
            x_pos = wall_thickness + c * (comp_w + wall_thickness);
            y_pos = wall_thickness + r_idx * (comp_d + wall_thickness);
            
            // Subtracted void for each compartment
            translate([x_pos, y_pos, base_thickness])
                rounded_box(comp_w, comp_d, height + 1, inner_r);
        }
    }
}