brompton-computer-guard.scad

   1 // -*- C -*-
   2
   3 cover_ysz = 45;
   4 cover_len = 70;
   5
   6 attach_tube_dia = 18;
   7
   8 attach_cx = -15;
   9 attach_cdy = -10;
  10 attach_w = 25;
  11
  12 attach_inrad = 25; ///
  13 attach_hole_dist = 5; ///
  14 attach_hole_dia = 4 + 0.5; ///
  15 attach_ang = 45;
  16
  17 // calculated
  18
  19 cover_lcircle_r = cover_ysz / (1 + 1/sqrt(2));
  20
  21 base_len = cover_len - cover_lcircle_r;
  22
  23 attach_total_len =
  24   attach_inrad + attach_tube_dia + attach_hole_dist + attach_hole_dia/2;
  25
  26 module RearSideTemplate(){
  27   polygon([[0.1,0],
  28            [-base_len,0],
  29            [-base_len,-cover_ysz],
  30            [0.1,      -cover_ysz]]);
  31   translate([-base_len, -cover_ysz + cover_lcircle_r])
  32     circle(r=cover_lcircle_r);
  33 }
  34
  35 module AttachTemplate(){
  36   hull(){
  37 //    polygon([[0,   0],
  38 //           [-0.1, 0],
  39 //           [-0.1, -cover_ysz],
  40 //           [0,    -cover_ysz]]);
  41     translate([attach_cx, -attach_cdy]) rotate([0,0,-attach_ang]) {
  42       polygon([[-attach_cx,       attach_w/2],
  43                [0,                -attach_w/2],
  44                [attach_total_len, -attach_w/2],
  45                [attach_total_len, attach_w/2]]);
  46       translate([attach_total_len, 0])
  47         circle(r=attach_w/2);
  48     }
  49   }
  50 }
  51
  52 //module Tube(){
  53 //  translate(
  54
  55 color("blue") RearSideTemplate();
  56 AttachTemplate();