$fn=64;

// --- Parameters ---
hex_radius = 50;           // Outer radius of the main hex base
base_height = 16;          // Height of the front base/lip
total_height = 85;         // Total height of the back support
tablet_thickness = 13.5;   // Width of the tablet slot
slot_depth = 10;           // Depth of the tablet slot into the base
slot_angle = 18;           // Lean angle of the tablet (degrees)

// Hex pattern parameters
hr = 7.5;                  // Radius of decorative hex holes
dx = 16;                   // Horizontal spacing of hex holes
dz = 14;                   // Vertical spacing of hex holes

difference() {
    // Main hexagonal body
    cylinder(r=hex_radius, h=total_height, $fn=6);
    
    // Front cutout (removes top front to create the flat base)
    // Leaves the backrest starting at y = -10
    translate([-hex_radius - 1, -hex_radius - 10, base_height])
    cube([hex_radius * 2 + 2, hex_radius + 10, total_height + 1]);
    
    // Tablet slot (angled backwards)
    translate([-hex_radius - 1, -10, base_height])
    rotate([slot_angle, 0, 0])
    translate([0, -tablet_thickness, -slot_depth])
    cube([hex_radius * 2 + 2, tablet_thickness, total_height + 10]);
    
    // Thumb groove for easy swiping/home button access
    translate([0, -hex_radius * 0.866, base_height])
    scale([1.5, 1, 1])
    cylinder(r=12, h=20, center=true);
    
    // Decorative hex holes (pointy-topped for easy 3D printing without supports)
    for(x = [-3 : 3]) {
        for(z = [0 : 5]) {
            z_off = (abs(x) % 2 == 1) ? dz / 2 : 0;
            translate([x * dx, 0, base_height + 15 + z * dz + z_off])
            rotate([90, 0, 0])
            rotate([0, 0, 30])
            cylinder(r=hr, h=hex_radius * 3, center=true, $fn=6);
        }
    }
    
    // Top angled chamfer for a sleeker profile
    translate([-hex_radius - 1, -hex_radius - 1, total_height])
    rotate([-8, 0, 0])
    cube([hex_radius * 2 + 2, hex_radius * 2 + 2, 40]);
}