// 19 to 22 inch rack adapter

difference() { // For adding the screw holes
  length = 80;
  width = 44.23;
  height = 45;

  rack_length = 20;
  rack_thickness = 2.5;
  rack_hole_r = 6.5 / 2;
  //  rack_hole_x_offset = (11.75 / 2) + 3.25;
  rack_hole_x_offset = (11.75 / 2) + 5.3;
  rack_hole_y_offset = rack_hole_r + 2.9;

  support_thickness = 10;
  support_base_thickness = 2.5;
  support_hole_y_offset = 18;
  support_hole_z_offset = 18;
  support_hole_r = 2;

  support_length = length - rack_length;

  union(r = 0) {

    difference() { // Extra triangle supports on both sides of the Y axis
      translate([support_base_thickness, 0, 0])
	linear_extrude(height(x, y) = (-width / support_length) * x + width) square(size = [support_length, width]);
      translate([support_base_thickness, support_thickness, 0])
	linear_extrude(height) square(size = [support_length, width - support_thickness * 2]);
    }
    difference() { // Cut our L bracket
      linear_extrude(height) square(size = [length, width]);

      translate([0,0, rack_thickness])
	linear_extrude(height)
	translate([support_base_thickness, 0]) square(size = [length, width]);

    }

  }

  // Holes for rackmount
  translate([rack_hole_x_offset + support_length, width - rack_hole_y_offset, 0])
    linear_extrude(height) circle(r = rack_hole_r);
  translate([rack_hole_x_offset + support_length, rack_hole_y_offset, 0])
    linear_extrude(height) circle(r = rack_hole_r);

  // Holes for mounting to unit
  translate([-1, support_hole_y_offset, support_hole_z_offset]) rotate(a = [0, 90])
    linear_extrude(height) circle(r = support_hole_r);
  translate([-1, width - support_hole_y_offset, support_hole_z_offset]) rotate(a = [0, 90])
    linear_extrude(height) circle(r = support_hole_r); 
  translate([-1, support_hole_y_offset, height - support_hole_z_offset]) rotate(a = [0, 90])
    linear_extrude(height) circle(r = support_hole_r);
  translate([-1, width - support_hole_y_offset, height - support_hole_z_offset]) rotate(a = [0, 90])
    linear_extrude(height) circle(r = support_hole_r);

  // TODO: Make this code work:
  //  translate([0, support_hole_y_offset, 20]) rotate(a = [0, 90])
  //  linear_extrude(height)
  //  pack(size = [10, 10])  {
  //   circle(r = 2);
  //   circle(r = 2);
  //   circle(r = 2);
  //   circle(r = 2);
  //  }


}