include <parameters.scad>

use <screw_hole.scad>

module connector_pole(units, depth, border_top=true, border_bottom=true, cable_funnel=true) {
  height = tray_height * units;
  overlap = bar_thickness + pole_overlap_shunt;

  difference() {
    // pole
    translate([0, 0, (border_bottom ? 0 : -overlap)])
    cube([bar_thickness, pole_depth, height
                              + (border_bottom ? 0 : overlap)
                              + (border_top    ? 0 : overlap)]);

    // screw holes
    for (i = [0:units])
      for (s = [-1, 1])
        translate([bar_thickness/2, depth, i * tray_height + s * bar_thickness/2])
        rotate([90, 0, 0])
        screw_hole(nut_depth = nut_height);

    // cable funnel
    if (cable_funnel)
      for (i = [0:units-1])
        translate([0, 0, i * tray_height + bar_thickness])
        cube([bar_thickness, pole_cable_funnel_width, tray_height - 2 * bar_thickness]);

    // receptors for lower/upper poles
    for (i = [[border_bottom, 0,       0],
              [border_top,    depth/2, height]])
      if (!i[0])
        translate([0, i[1], i[2]-overlap])
        cube([bar_thickness, depth/2, 2*overlap]);
  }
}

connector_pole(2, 20);

translate([50,0,0]) connector_pole(2, 20, border_bottom=false);

translate([100,0,0]) connector_pole(2, 20, border_top=false, border_bottom=false);

translate([150,0,0]) connector_pole(2, 20, border_top=false);