// common base module for front and back connector

include <parameters.scad>

use <nipple.scad>

module connector_half(
  border_side = false,
  border_top = false,
  border_bottom = false
) {	 
  // vertical bar
  cube([bar_thickness/2, bar_thickness, tray_height]);

  if (!border_side) {
    // upper horizontal bar
    translate([0, 0, tray_height - bar_thickness])
      cube([tray_width / 2, bar_thickness, bar_thickness]);

    // lower horizontal bar
    cube([bar_thickness/2 + rail_width + pla_epsilon, bar_thickness, bar_thickness]);

    // vertical thread bold receiver (extremal)
    translate([tray_width/2 - bar_thickness, bar_thickness, tray_height-bar_thickness])
      cube([bar_thickness, bar_thickness, bar_thickness]);
  }

  // vertical thread bold receiver (central)
  translate([0, bar_thickness, tray_height-bar_thickness])
    cube([bar_thickness/2, bar_thickness, bar_thickness]);

  // male downward positioning nippel
  if (!border_bottom && !border_side)
    translate([rail_width, bar_thickness / 2, 0]) nipple();
}