$fn=64;

// --- Parameters ---
phone_w = 90;      // Width of the phone resting area
tilt_angle = 15;   // Tilt angle of the backrest

seat_h = 25;       // Height of the base/seat
back_h = 130;      // Height of the backrest
back_t = 15;       // Thickness of the backrest

arm_w = 16;        // Width of the armrests
arm_h = 40;        // Height of the armrests above the seat

total_w = phone_w + (arm_w * 2);
total_d = 100;     // Total depth of the throne

module throne() {
    difference() {
        // Main Solid Body
        union() {
            // 1. Base / Seat
            cube([total_w, total_d, seat_h]);

            // 2. Tilted Backrest
            // Positioned halfway back to allow resting space
            translate([0, 50, seat_h])
            rotate([-tilt_angle, 0, 0])
            union() {
                // Main back panel
                cube([total_w, back_t, back_h]);

                // Side posts for backrest
                cube([arm_w, back_t, back_h + 20]);
                translate([total_w - arm_w, 0, 0])
                    cube([arm_w, back_t, back_h + 20]);

                // Top Arch
                translate([total_w/2, 0, back_h])
                    rotate([-90, 0, 0])
                    cylinder(r=phone_w/2, h=back_t);

                // Vertical decorative pillars
                for(i=[1:4]) {
                    translate([arm_w + phone_w * i/5, 0, 0])
                        cylinder(r=4, h=back_h);
                }

                // Top Finials on posts
                translate([arm_w/2, back_t/2, back_h + 20])
                    sphere(r=arm_w/2 + 4);
                translate([total_w - arm_w/2, back_t/2, back_h + 20])
                    sphere(r=arm_w/2 + 4);
            }

            // 3. Armrests
            for(x = [0, total_w - arm_w]) {
                translate([x, 0, seat_h]) {
                    // Main armrest block
                    cube([arm_w, total_d, arm_h]);

                    // Rounded top
                    translate([arm_w/2, 0, arm_h])
                        rotate([-90, 0, 0])
                        cylinder(r=arm_w/2, h=total_d);

                    // Front finial (hand rest)
                    translate([arm_w/2, 0, arm_h])
                        sphere(r=arm_w/2 + 3);

                    // Back finial
                    translate([arm_w/2, total_d, arm_h])
                        sphere(r=arm_w/2);
                }
            }

            // 4. Phone Stopper (Front Lip)
            translate([arm_w, 15, seat_h]) {
                cube([phone_w, 10, 8]);
                // Rounded top for the stopper
                translate([0, 5, 8])
                    rotate([0, 90, 0])
                    cylinder(r=5, h=phone_w);
            }

            // 5. Seat Cushion (Slightly raised area for phone)
            translate([arm_w, 25, seat_h])
                cube([phone_w, 25, 2]);
        }

        // --- Subtractions (Leg Cutouts) ---

        // Front-to-back arch cutout
        translate([total_w/2, -10, 0])
            scale([1, 1, 0.5])
            rotate([-90, 0, 0])
            cylinder(r=phone_w/2 - 5, h=total_d + 20);

        // Left-to-right arch cutout
        translate([-10, total_d/2 + 5, 0])
            scale([1, 1, 0.6])
            rotate([0, 90, 0])
            cylinder(r=total_d/2 - 15, h=total_w + 20);
    }
}

// Render the model
throne();