$fn = 64;

// --- Parameters ---
gap = 0.4;          // Clearance for print-in-place hinges
base_t = 4;         // Thickness of flat parts
hex_r = 25;         // Radius of base hexagons

// --- Modules ---

// Slightly oversized hexagon to ensure manifold overlapping
module hex_shape(r, h) {
    rotate([0, 0, 30]) cylinder(r=r+0.1, h=h, $fn=6);
}

module base() {
    difference() {
        union() {
            // 3-hex footprint (arranged in a triangle)
            translate([0, 30, 0]) hex_shape(hex_r, base_t);
            translate([21.65, 67.5, 0]) hex_shape(hex_r, base_t);
            translate([-21.65, 67.5, 0]) hex_shape(hex_r, base_t);
            
            // Connection block to main hinge (with overlap)
            translate([-30, -1, 0]) cube([60, 32, base_t]);
        }
        // Cutout clearance for the cradle's inner knuckle to rotate freely
        translate([-15 - gap, -12, -1]) cube([30 + 2*gap, 44, 10]);
    }
    
    // Main Hinge Outer Knuckles (Print-in-place cones pointing IN)
    translate([-30, 0, 4]) rotate([0,90,0]) cylinder(h=15-gap, r=4);
    translate([-15-gap, 0, 4]) rotate([0,90,0]) cylinder(h=4, r1=4, r2=0);
    
    translate([15+gap, 0, 4]) rotate([0,90,0]) cylinder(h=15-gap, r=4);
    translate([15+gap, 0, 4]) rotate([0,-90,0]) cylinder(h=4, r1=4, r2=0);
    
    // Adjustable angle ridges for the prop to catch on
    for (i=[40 : 8 : 80]) {
        translate([-15, i, 3.5]) rotate([0,90,0]) cylinder(h=30, r=2);
    }
}

module cradle() {
    difference() {
        union() {
            // Main Hinge Inner Knuckle (with conical cutouts)
            translate([-15, 0, 4]) rotate([0,90,0]) difference() {
                cylinder(h=30, r=4);
                translate([0,0,-0.01]) cylinder(h=4, r1=4+gap, r2=gap);
                translate([0,0,30+0.01]) rotate([180,0,0]) cylinder(h=4, r1=4+gap, r2=gap);
            }
            
            // Neck connecting hinge to main body
            translate([-15, -10, 0]) cube([30, 11, base_t]);
            
            // Main Phone Support Body
            translate([-35, -110, 0]) cube([70, 101, base_t]);
            
            // Bottom Phone Holding Lip
            translate([-35, -110, 0]) cube([70, 12, 15]);
            
            // Prop Hinge Outer Knuckles
            translate([-15, -80, 3]) rotate([0,90,0]) cylinder(h=7.5-gap, r=3);
            translate([-7.5-gap, -80, 3]) rotate([0,90,0]) cylinder(h=3, r1=3, r2=0);
            
            translate([7.5+gap, -80, 3]) rotate([0,90,0]) cylinder(h=7.5-gap, r=3);
            translate([7.5+gap, -80, 3]) rotate([0,-90,0]) cylinder(h=3, r1=3, r2=0);
        }
        
        // Cutout for Prop Body to fold flush
        translate([-8.5, -82, -1]) cube([17, 62, 10]);
        
        // Cutout clearance for Prop Hinge Inner Knuckle
        translate([-7.5-gap, -85, -1]) cube([15+2*gap, 10, 10]);
        
        // Hollow out Phone Lip to prevent screen blocking and save material
        translate([-31, -106, 4]) cube([62, 10, 12]);
    }
}

module prop() {
    union() {
        // Prop Hinge Inner Knuckle
        translate([-7.5, -80, 3]) rotate([0,90,0]) difference() {
            cylinder(h=15, r=3);
            translate([0,0,-0.01]) cylinder(h=3, r1=3+gap, r2=gap);
            translate([0,0,15+0.01]) rotate([180,0,0]) cylinder(h=3, r1=3+gap, r2=gap);
        }
        
        // Prop Body (overlaps with inner knuckle to ensure manifold)
        translate([-7.5, -81, 0]) cube([15, 57, base_t]);
        
        // Catch / Handle at the end of the prop
        translate([-7.5, -25, 0]) cube([15, 5, 6]);
    }
}

// --- Assembly ---
// The model is generated flat for print-in-place without supports.
// Once printed, the cradle hinges upwards and the prop hinges downwards to lock into the ridges.
base();
cradle();
prop();