$fn = 64;

// --- Parameters ---
bracket_width = 32;
shelf_depth = 32;
wall_thickness = 5;
brace_thickness = 10;
total_height = 80;
shelf_z = 60;

// FigureStage Grid Parameters
grid_spacing = 8;
peg_dia = 4.8;
peg_height = 2;

// Mounting Hardware
screw_dia = 4.5;
screw_head_dia = 8.5;
screw_head_depth = 3;

module floating_shelf_bracket() {
    difference() {
        union() {
            // Wall mounting plate
            cube([bracket_width, wall_thickness, total_height]);
            
            // Horizontal shelf platform
            translate([0, wall_thickness - 0.1, shelf_z - wall_thickness])
                cube([bracket_width, shelf_depth + 0.1, wall_thickness]);
            
            // Angled support brace
            hull() {
                translate([bracket_width/2 - brace_thickness/2, wall_thickness - 0.1, shelf_z - wall_thickness])
                    cube([brace_thickness, shelf_depth + 0.1, 0.1]);
                translate([bracket_width/2 - brace_thickness/2, wall_thickness - 0.1, 20])
                    cube([brace_thickness, 0.1, 0.1]);
            }
            
            // Baseplate integration pegs (4x4 grid)
            for (i = [0:3], j = [0:3]) {
                translate([
                    4 + i * grid_spacing,
                    wall_thickness + 4 + j * grid_spacing,
                    shelf_z - 0.1
                ])
                cylinder(d=peg_dia, h=peg_height + 0.1);
            }
        }
        
        // Top mounting hole
        translate([bracket_width/2, wall_thickness + 0.1, total_height - 10])
        rotate([90, 0, 0]) {
            cylinder(d=screw_dia, h=wall_thickness + 0.2);
            cylinder(d1=screw_head_dia, d2=screw_dia, h=screw_head_depth);
        }
        
        // Bottom mounting hole
        translate([bracket_width/2, wall_thickness + 0.1, 10])
        rotate([90, 0, 0]) {
            cylinder(d=screw_dia, h=wall_thickness + 0.2);
            cylinder(d1=screw_head_dia, d2=screw_dia, h=screw_head_depth);
        }
    }
}

// Render the bracket
floating_shelf_bracket();