cx-case/assets/connector.scad

include <../config/connector.scad>
include <../config/plate.scad>
include <ATX.scad>

function connector_holes_pattern() = [
    [connector_mount_width / 2, connector_mount_height / 2],
    [connector_mount_width / 2, -connector_mount_height / 2],
    [0, connector_mount_height / 2],
    [0, -connector_mount_height / 2],
    [-connector_mount_width / 2, connector_mount_height / 2],
    [-connector_mount_width / 2, -connector_mount_height / 2],
];

module connector_object() {
    depth = connector_depth;
    height = connector_height;
    rounding = connector_rounding;
    thickness = connector_thickness;
    rods = connector_rods;
    hole = connector_hole;
    screwdriver_hole = connector_screwdriver_hole;

    module cross_shape(scaled = false, cut = true) {
        module corner(x = 0, y = 0) {
            translate([x, y]) {
                circle(r = rounding);
            }
        }

        move_x = depth / 2 - rounding;
        move_y = height / 2 - rounding;
   
        if (!scaled) {
            difference() {
                hull() {
                    corner(move_x, move_y);
                    corner(-move_x, move_y);
                    corner(-move_x, -move_y);
                }
                
                if (cut) {
                    cross_shape(scaled = true);
                }
            } 
        } else {
            scaled_x = (move_x - rods) / move_x;
            scaled_y = (move_y - rods) / move_y;

            scale([scaled_x, scaled_y]) {
                x_change = move_x - move_x * scaled_x;
                y_change = move_y - move_y * scaled_y;

                translate([-x_change / 2, y_change / 2])
                    cross_shape(scaled = false, cut = false);
            }
        }
    }

    module base_object() {
        rotate([90, 0, 0]) {
            linear_extrude(height = thickness, center = true) {
                cross_shape();
            }
        }
    }
   
    module top_holes(size = height) {
        for (count = connector_holes_pattern()) {
            translate([count.x, count.y, 0]) {
                cylinder(h = size, r = hole / 2, center = true);
                
                translate([0, 0, -rods]) {
                    cylinder(
                        h = size, 
                        r = screwdriver_hole / 2, 
                        center = true
                    );
                }
            }
        }
    }

    module side_holes() {
        rotate([0, 90, 180]) {
            top_holes(size = depth);
        }
    }

    module final_object() {
        difference() {
            base_object();
            top_holes();
            side_holes();
        }
    }

    color("#222222") {
        render() {
            final_object();
        }
    }
}