// Blank Wall Plate (No Openings)
// Standard single-gang blank cover plate
// Parametric OpenSCAD model

include <BOSL2/std.scad>

/* [Plate Dimensions] */
plate_width = 83.64;        // mm - X dimension
plate_height = 126.64;      // mm - Y dimension
plate_thickness = 5.0;      // mm - Z dimension

/* [Bevel Settings] */
bevel_inset = 1.82;         // mm - how much smaller bottom is per side

/* [Recess Settings] */
recess_enabled = true;
recess_depth = 2.0;         // mm - depth of recess (from bottom)
recess_inset = 8.0;         // mm - inset from outer edge

/* [Screw Holes] */
screw_holes_enabled = true;
screw_hole_diameter = 5.0;  // mm - diameter of screw hole
screw_hole_spacing = 100.0; // mm - distance between hole centers

/* [Corner Rounding] */
plate_corner_radius = 3.0;  // mm

/* [Resolution] */
$fn = 64;

// ============================================
// CALCULATED VALUES
// ============================================

bottom_width = plate_width - (bevel_inset * 2);
bottom_height = plate_height - (bevel_inset * 2);
recess_width = plate_width - (recess_inset * 2);
recess_height = plate_height - (recess_inset * 2);

// ============================================
// MODULES
// ============================================

module plate_body() {
    // Flipped for printing: front face (larger) at Z=0, back (smaller) at Z=5
    // This eliminates overhang on beveled edges
    prismoid(
        size1 = [plate_width, plate_height],      // front face (larger) at bottom
        size2 = [bottom_width, bottom_height],    // back face (smaller) at top
        h = plate_thickness,
        rounding = plate_corner_radius,
        anchor = BOTTOM
    );
}

module back_recess() {
    if (recess_enabled) {
        recess_rounding = max(0.5, plate_corner_radius - recess_inset/4);
        // Recess now at top (Z=5) since plate is flipped for printing
        translate([0, 0, plate_thickness - recess_depth - 0.01])
            prismoid(
                size1 = [recess_width, recess_height],
                size2 = [recess_width, recess_height],
                h = recess_depth + 0.02,
                rounding = recess_rounding,
                anchor = BOTTOM
            );
    }
}

module screw_holes() {
    if (screw_holes_enabled) {
        for (y_pos = [screw_hole_spacing/2, -screw_hole_spacing/2]) {
            translate([0, y_pos, -0.1])
                cylinder(h = plate_thickness + 0.2, d = screw_hole_diameter);
        }
    }
}

// ============================================
// MAIN ASSEMBLY
// ============================================

module blank_plate() {
    difference() {
        plate_body();
        back_recess();
        screw_holes();
    }
}

blank_plate();