overall_cylinder_diam = 41;
chamber_to_center = 6.96;
chamber_diam = 11.45;

bottom_height = 3;

top_height = 20;

opening_sep = 0.1;

border = 1;

funnel_size = 1;

part = 0;

part_sep = 0.2;

module _end_of_customizer() {}

assert(part >= 0 && part <= 2);

$fn = $preview?30:80;

module overall_cylinder() {
    translate([0, 0, -20])
    difference() {
        cylinder(d = overall_cylinder_diam, h = 20);

        for(i = [0:5]) {
            rotate([0, 0, i/6*360])
            translate([chamber_to_center + chamber_diam/2, 0, -1])
            cylinder(d = chamber_diam, h = 22);
        }
    }
}

if($preview && part == 0)
color("#777")
overall_cylinder();

module bottom() {
    difference() {
        union() {
            for(i = [0:5]) {
                rotate([0, 0, i / 6 * 360])
                bottom_part();
            }
        }

        translate([0, 0, bottom_height])
        connection(true);
    }
}

center_to_bottom_opening_center = chamber_to_center + chamber_diam / 2;
bottom_opening_diam = center_to_bottom_opening_center * sin(360 / 12) - opening_sep;

module bottom_part() {
    difference() {
        union() {
            rotate([0, 0, 360/12])
            linear_extrude(bottom_height)
            polygon([
                [0, 0],
                [overall_cylinder_diam / 2 * cos(360 / 12),  overall_cylinder_diam / 2 * sin(360 / 12)],
                [overall_cylinder_diam / 2 * cos(360 / 12), -overall_cylinder_diam / 2 * sin(360 / 12)],
            ]);

            translate([center_to_bottom_opening_center, 0, -funnel_size])
            cylinder(
                d1 = bottom_opening_diam,
                d2 = bottom_opening_diam + funnel_size,
                h = funnel_size
            );
        }

        translate([center_to_bottom_opening_center, 0, -1 - funnel_size])
        cylinder(d = bottom_opening_diam, h = bottom_height + 2 + funnel_size);

        rotate([0, 0, 360/6])
        translate([center_to_bottom_opening_center, 0, -1 - funnel_size])
        cylinder(d = bottom_opening_diam, h = bottom_height + 2 + funnel_size);
    }
}

if(part == 0 || part == 1)
color("#dd08")
bottom();

module top() {
    for(i = [0:5]) {
        rotate([0, 0, i / 6 * 360])
        top_part();
    }

    connection(false);
}

module top_part() {
    difference() {
        linear_extrude(top_height)
        polygon([
            [0, 0],
            [overall_cylinder_diam / 2 * cos(360 / 12),  overall_cylinder_diam / 2 * sin(360 / 12)],
            [overall_cylinder_diam / 2 * cos(360 / 12), -overall_cylinder_diam / 2 * sin(360 / 12)],
        ]);

        top_part_hollow();
    }
}

module top_part_hollow() {
    adjusted_radius = overall_cylinder_diam / 2 - border;

    hull() {
        translate([center_to_bottom_opening_center, 0, 0])
        cylinder(d = bottom_opening_diam, h = 0.1);

        translate([0, 0, top_height - 0.1 - border])
        linear_extrude(0.1)
        polygon([
            [border, 0],
            [adjusted_radius * cos(360 / 12),  adjusted_radius * sin(360 / 12) - border / 2],
            [adjusted_radius * cos(360 / 12), -adjusted_radius * sin(360 / 12) + border / 2],
        ]);
    }
}

if(part == 0 || part == 2)
color("#4d48")
translate([0, 0, bottom_height + part_sep])
top();

module connection(hole) {
    sep_hole = hole?part_sep:0;
    sep_screw = hole?0:part_sep;

    translate([0, 0, -1.5 - sep_screw * 2])
    cylinder(d = 4 + sep_hole, h = 1.5 + sep_screw * 2);

    translate([0, 0, -3 - sep_screw * 2])
    cylinder(d1 = 8 + sep_hole, d2 = 4 + sep_hole, h = 1.5);
}

if($preview && part == 1)
color("#f008")
for(i = [0:5]) {
    rotate([0, 0, i/6*360 + 360 / 12])
    translate([center_to_bottom_opening_center, 0, 01])
    cylinder(d = bottom_opening_diam, h = bottom_height + 2);
}