1//////////////////////////////////////////////////////////////////////////////////////////////
  2// LibFile: tripod_mounts.scad
  3//   Mount plates for tripods.  Currently only the Manfrotto RC2 plate. 
  4// Includes:
  5//   include <BOSL2/std.scad>
  6//   include <BOSL2/tripod_mounts.scad>
  7// FileGroup: Parts
  8// FileSummary: Tripod mount plates: RC2
  9//////////////////////////////////////////////////////////////////////////////////////////////
 10
 11
 12// Module: manfrotto_rc2_plate()
 13// Usage:
 14//   manfrotto_rc2_plate([chamfer],[anchor],[orient],[spin]) [ATTACHMENTS];
 15// Description:
 16//   Creates a Manfrotto RC2 quick release mount plate to mount to a tripod.  The chamfer argument
 17//   lets you control whether the model edges are chamfered.  By default all edges are chamfered,
 18//   but you can set it to "bot" to chamfer only the bottom, so that connections to a model larger
 19//   than the plate doin't have a V-groove at the junction.  The plate is 10.5 mm thick.
 20// Arguments:
 21//   chamfer = "none" for no chamfer, "all" for full chamfering, and "bot" or "bottom" for bottom chamfering.  Default: "all".
 22// Examples:
 23//   manfrotto_rc2_plate();
 24//   manfrotto_rc2_plate("bot");
 25module manfrotto_rc2_plate(chamfer="all",anchor,orient,spin)
 26{
 27  chsize=0.5;
 28
 29  dummy = assert(in_list(chamfer, ["bot","bottom","all","none"]), "chamfer must be \"all\", \"bottom\", \"bot\", or \"none\"");
 30  chamf_top = chamfer=="all";
 31  chamf_bot = in_list(chamfer, ["bot","bottom","all"]);
 32
 33  length = 52.5;
 34  innerlen=43;
 35  
 36  topwid = 37.4;
 37  botwid = 42.4;
 38  
 39  thickness = 10.5;
 40
 41  flat_height=3;
 42  angled_size=5;
 43  angled_height = thickness - flat_height*2;
 44  angled_width = sqrt(angled_size^2-angled_height^2);
 45
 46  corner_space = 25;
 47  corner_space_ht = 4.5;
 48
 49  left_top=2;
 50
 51  pts = turtle([
 52                "move",botwid,
 53                "left",
 54                "move", flat_height,
 55                "xymove", [-angled_width, angled_height],
 56                "move", flat_height,
 57                "left",
 58                "move", topwid,
 59                "left",
 60                "move", left_top,
 61                "jump", [0,flat_height]
 62               ]);
 63
 64
 65  cutout_len=26;
 66
 67
 68  facet = [
 69            back(-left_top,select(pts,-3)),
 70            each fwd(1.5,select(pts,-2,-1)),
 71            [-10,-left_top+select(pts,-1).y],
 72            left(10,back(-flat_height,select(pts,-3)))
 73          ];
 74
 75  attachable(anchor,spin,orient,size=[botwid,length,thickness],size2=[topwid,length],shift=[.64115/2,0]){
 76    tag_scope()
 77    down(thickness/2)
 78    diff()
 79      linear_sweep(pts,h=length,convexity=4,orient=FWD,anchor=FWD){
 80          tag("remove"){
 81            zflip_copy()
 82              down(.01)fwd(.01)left(.01)position(LEFT+FRONT+BOT)
 83                cuboid([corner_space,(length-innerlen)/2,thickness+.02], chamfer=-chsize,
 84                       orient=FWD,anchor=TOP+LEFT+FWD,edges=chamf_top?"ALL":TOP);
 85            fwd(left_top)position(LEFT+BACK)linear_sweep(h=cutout_len,facet,convexity=4,anchor=RIGHT+BACK);
 86          }
 87          if (chamf_bot){
 88            edge_mask(FRONT+LEFT)chamfer_edge_mask(length,chsize);
 89            edge_mask(FRONT+RIGHT)chamfer_edge_mask(length,chsize);
 90            edge_mask(FRONT+TOP)chamfer_edge_mask(length,chsize);        
 91            edge_mask(FRONT+BOT)chamfer_edge_mask(length,chsize);
 92            edge_mask(TOP+RIGHT)chamfer_edge_mask(length,chsize);
 93            edge_mask(BOT+RIGHT)chamfer_edge_mask(length,chsize);
 94            zflip_copy(){
 95               right(corner_space)edge_mask(TOP+LEFT) chamfer_edge_mask(length,chsize);
 96               down((length-innerlen)/2)edge_mask(TOP+LEFT) chamfer_edge_mask(length,chsize);
 97            }
 98          }
 99          if (chamf_top){
100            edge_mask(BACK+LEFT) chamfer_edge_mask(length,chsize);
101            edge_mask(BACK+RIGHT) chamfer_edge_mask(length,chsize);
102            edge_mask(BACK+TOP) chamfer_edge_mask(length,chsize);        
103            edge_mask(BACK+BOT) chamfer_edge_mask(length,chsize);
104          }
105        }
106    children();
107    }
108}