$triangle_width = 65;
$triangle_height = 40;
$triangle_thickness = 5.87;
$triangle_screw_hole_diameter = 4.7;

$triangle_x_hole_gap = 40;
$triangle_y_hole_gap = 20;
$triangle_x_offset = 19;
$triangle_y_offset = 5;

$fn=200;

screen_mount();

module attachment_point() {
    difference() {
        linear_extrude($triangle_thickness)
            polygon([[0, 0], [$triangle_width, $triangle_height], [$triangle_width, 0]]);
        translate([$triangle_x_offset, $triangle_y_offset, 0])
            union() {
                hole_puncher();
                translate([$triangle_x_hole_gap, 0, 0]) hole_puncher();
                translate([$triangle_x_hole_gap, $triangle_y_hole_gap, 0]) hole_puncher();
            };
       translate([$rounded_nose, 4.234, -0.2])
           rotate([0, 0, 120])
           nose_rounding();
       translate([0, $triangle_height - $triangle_y_offset * 1.5, -0.1])
           cube([100, 100, $triangle_thickness * 3]);
       translate([45, 12, -0.1])
           cylinder(h=100, r=10);
      translate([28, 8, -0.1])
           cylinder(h=100, r=4);
    };
};

$screen_enter_diameter = 10;
$screen_lock_diameter = 6.25;
$screen_enter_gap = 30 + $screen_lock_diameter;
$screen_enter_y_offset = 14;
$screen_mount_width = 50;
$screen_mount_height = 60;
$screen_mount_thickness = 5;
$screen_side_cutout_size = 36;

module screen_mount() {
    difference() {
        cube([$screen_mount_width, $screen_mount_height, $screen_mount_thickness]);
        translate([$screen_mount_width / 2, $screen_enter_y_offset, -0.1])
            cylinder(h=$screen_mount_thickness * 2, d=$screen_enter_diameter);
        translate([$screen_mount_width / 2, $screen_enter_y_offset + $screen_enter_gap, -0.1])
            cylinder(h=$screen_mount_thickness * 2, d=$screen_enter_diameter);
        for (i = [0:1:7]) {
            mount_hole_puncher(i * -1);
        };
        translate([$screen_mount_width, $screen_mount_height / 2, -0.1])
            cylinder(h=$screen_mount_thickness * 2, d=$screen_side_cutout_size);
        translate([0, $screen_mount_height / 2, -0.1])
            cylinder(h=$screen_mount_thickness * 2, d=$screen_side_cutout_size);
        /*
        translate([25, 0, -0.1])
            rotate([0, 0, -30])
            cube([$screen_mount_width, $screen_mount_height, $screen_mount_thickness * 2]);
        translate([-10, -20, -0.1])
            rotate([0, 0, 30])
            cube([$screen_mount_width, $screen_mount_height, $screen_mount_thickness * 2]);
        
        translate([0, $screen_mount_height, 0])
            mirror([0, 1, 0])
                union() {
                    translate([25, 0, -0.1])
                        rotate([0, 0, -30])
                        cube([$screen_mount_width, $screen_mount_height, $screen_mount_thickness * 2]);
                    translate([-10, -20, -0.1])
                        rotate([0, 0, 30])
                        cube([$screen_mount_width, $screen_mount_height, $screen_mount_thickness * 2]);
                };
        */
    };
};

module mount_hole_puncher($gap) {
    translate([$screen_mount_width / 2, $screen_enter_y_offset + $gap, -0.1])
        cylinder(h=$screen_mount_thickness * 2, d=$screen_lock_diameter);
    translate([$screen_mount_width / 2, $screen_enter_y_offset + $screen_enter_gap + $gap, -0.1])
        cylinder(h=$screen_mount_thickness * 2, d=$screen_lock_diameter);
};
    
module hole_puncher() {
    translate([0, 0, $triangle_thickness * -1])
        cylinder(h=$triangle_thickness * 3, d=$triangle_screw_hole_diameter);
};

$rounded_nose = 25;
module nose_rounding() {
    difference() {
        color("red") cube([$rounded_nose, $rounded_nose, $triangle_thickness * 2]);
        translate([-3, 0, $triangle_thickness / -2])
            color("blue")
            cylinder(h=$triangle_thickness * 3, d=$rounded_nose);
    };
};