mp2i-vms.fr
250 lines
8.4 KiB
OCaml
250 lines
8.4 KiB
OCaml
open Graphics ;;
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type 'a tree = Empty | Leaf of 'a | Node of 'a * 'a tree * 'a tree ;;
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(*
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STRUCT : (digit, xcoord, ycoord)
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*)
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let rec pw x n = match n with
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| 0 -> 1
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| 1 -> x
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| k when k mod 2 = 0 -> let res = pw x (n/2) in res*res
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| k -> let res = pw x (n/2) in res*res*x ;;
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let rec depth_of_tree t = match t with
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| Leaf _ -> 1
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| Node (_, g, d) -> 1 + max (depth_of_tree g) (depth_of_tree d)
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| Empty -> 0;;
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let fill_data te ystep sx sy r =
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let depth = depth_of_tree te in
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let res = Array.make (depth+1) [] in
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let rec aux t cur_x cur_d spacing pcx pcy = match t with
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| Node (x, g, d) -> begin
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aux g (cur_x - spacing) (cur_d+1) (spacing/2) cur_x (sy - r - 20 - ystep * cur_d);
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res.(cur_d) <- (((x, (pcx, pcy)), (cur_x, sy - r - 20 - ystep * cur_d)))::(res.(cur_d));
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aux d (cur_x + spacing) (cur_d+1) (spacing/2) cur_x (sy - r - 20 - ystep * cur_d);
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end
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| Leaf x -> begin
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res.(cur_d) <- (((x, (pcx, pcy)), (cur_x, sy - r - ystep * cur_d)))::(res.(cur_d));
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end
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| Empty -> ()
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in aux te (sx/2) 0 (r/2 + r * ((pw 2 (depth-1)) - 1)) (-1) (-1); res ;;
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let rec ln10 n = match n with
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| k when k < 0 -> failwith "Are you sure about that ?"
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| k when k < 10 -> 0
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| k -> 1 + ln10 (k/10) ;;
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let delta i j =
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if i = j then 1 else 0 ;;
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let draw_integer x0 y n0 r =
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(* 7-seg display *)
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let n = ref n0 in
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let size = ln10 n0 in
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let len = r/3 in
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let offset = size*(len/2) in
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for i = 0 to size do
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let x = x0 - (-(1 - delta size 0)*8 - offset + i * (len+8)) in
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if Array.mem (!n mod 10) [|0; 4; 5; 6; 7; 8; 9|] then
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draw_poly_line [|(x-len/2, y+len); (x-len/2, y)|];
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if Array.mem (!n mod 10) [|0; 2; 3; 5; 6; 7; 8; 9|] then
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draw_poly_line [|(x-len/2, y+len); (x+len/2, y+len)|];
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if Array.mem (!n mod 10) [|0; 1; 2; 3; 4; 7; 8; 9|] then
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draw_poly_line [|(x+len/2, y+len); (x+len/2, y)|];
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if Array.mem (!n mod 10) [|2; 3; 4; 5; 6; 8; 9|] then
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draw_poly_line [|(x-len/2, y); (x+len/2, y)|];
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if Array.mem (!n mod 10) [|0; 1; 3; 4; 5; 6; 7; 8; 9|] then
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draw_poly_line [|(x+len/2, y-len); (x+len/2, y)|];
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if Array.mem (!n mod 10) [|0; 2; 3; 5; 6; 8; 9|] then
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draw_poly_line [|(x-len/2, y-len); (x+len/2, y-len)|];
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if Array.mem (!n mod 10) [|0; 2; 6; 8|] then
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draw_poly_line [|(x-len/2, y-len); (x-len/2, y)|];
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n := !n/10;
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done ;;
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let rec draw_list l d r = match l with
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| [] -> ()
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| h::t -> begin
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set_color (rgb 192 192 192);
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fill_circle (fst (snd h)) (snd (snd h)) r;
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set_color black;
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draw_circle (fst (snd h)) (snd (snd h)) r;
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moveto (fst (snd h)) (snd (snd h));
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set_color (rgb 32 192 32);
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draw_integer (fst (snd h)) (snd (snd h)) (fst (fst h)) r;
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draw_list t d r
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end;;
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let connect l0 =
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let rec aux l = match l with
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| [] -> ()
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| ((_, (xf, yf)), (x, y))::t ->
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if xf >= 0 && yf >= 0 then begin
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set_color (rgb 192 192 192);
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draw_poly_line [|(xf, yf); (x, y)|];
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aux t
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end
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in aux l0 ;;
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let even_more_pretty_printing t r ystep skip =
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let sx = Graphics.size_x () in
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let sy = Graphics.size_y () in
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let graphdata = fill_data t ystep sx sy (6*r/10) in
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(* graphdata is a ((int * (int * int)) * (int * int)) list array *)
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(* <==> ((value, (parent_x, parent_y)), (this_x, this_y)) *)
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if skip = false then begin
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set_color (rgb 192 192 192);
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set_line_width 15 ;
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for dpth = 1 to (Array.length graphdata -1) do
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connect graphdata.(dpth-1);
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done;
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set_line_width 5 ;
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for dpth = 0 to (Array.length graphdata -1) do
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draw_list graphdata.(dpth) dpth r
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done;
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let halt = ref false in
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while !halt = false do
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Unix.sleepf 0.1 ;
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Unix.sleepf 2.0 ;
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halt := true;
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done;
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end;
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graphdata ;;
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let generate_full_tree d =
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let rec aux n = match n with
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| 0 -> Leaf (Random.int 1000)
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| k -> begin
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Node (Random.int 1000, aux (n-1), aux (n-1))
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end
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in aux d ;;
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let generate_some_tree maxd nodechance leafchance =
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let rec aux n = match n with
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| 0 -> if (Random.int 101 < leafchance) then Leaf (Random.int 100) else Empty
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| k -> begin
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match Random.int 101 with
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| k when k <= nodechance -> Node (Random.int 1000, aux (n-1), aux (n-1))
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| k -> if (Random.int 101 < leafchance) then Leaf (Random.int 1000) else Empty
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end
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in aux maxd ;;
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let rec nth l n = match l with
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| [] -> failwith "Out of range"
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| h::t when n = 0 -> h
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| h::t -> nth t (n-1) ;;
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let even_more_fancy_dfs_prefixe t graphdata r tts rfound gfound bfound rmark gmark bmark =
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let d = depth_of_tree t in
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let count_per_depth = Array.make d 0 in
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let rec aux tr dpth =
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match tr with
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| Empty -> ()
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| Leaf _ -> begin
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - count_per_depth.(dpth) - 1) in
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count_per_depth.(dpth) <- count_per_depth.(dpth) + 1;
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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end
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| Node (_, g, d) -> begin
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - count_per_depth.(dpth) - 1) in
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count_per_depth.(dpth) <- count_per_depth.(dpth) + 1;
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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aux g (dpth+1);
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aux d (dpth+1);
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end
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in aux t 0 ;;
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let even_more_fancy_dfs_infixe t graphdata r tts rfound gfound bfound rmark gmark bmark =
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let rec aux tr dpth os =
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match tr with
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| Empty -> ()
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| Leaf _ -> begin
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - os - 1) in
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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end
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| Node (_, g, d) -> begin
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aux g (dpth+1) (2*os);
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - os - 1) in
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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aux d (dpth+1) (2*os + 1);
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end
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in aux t 0 0 ;;
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let even_more_fancy_dfs_postfixe t graphdata r tts rfound gfound bfound rmark gmark bmark =
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let rec aux tr dpth os =
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match tr with
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| Empty -> ()
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| Leaf _ -> begin
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - os - 1) in
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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end
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| Node (_, g, d) -> begin
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aux g (dpth+1) (2*os);
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aux d (dpth+1) (2*os + 1);
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let data = nth graphdata.(dpth) (List.length graphdata.(dpth) - os - 1) in
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set_color (rgb rfound gfound bfound);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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Unix.sleepf tts;
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set_color (rgb rmark gmark bmark);
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draw_circle (fst (snd data)) (snd (snd data)) r;
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end
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in aux t 0 0 ;;
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(* --------------------------------------| TESTS |-------------------------------------- *)
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Random.self_init ;;
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open_graph " 1800x800" ;;
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set_window_title "Trees" ;;
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let tt = generate_some_tree 4 100 75 ;;
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let gdata = even_more_pretty_printing tt 40 150 false ;;
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even_more_fancy_dfs_prefixe tt gdata 40 0.2 255 255 32 32 32 255 ;;
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close_graph () ;;
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(* compilation command : ocamlfind ocamlc -linkpkg -package unix -linkpkg -package graphics trees.ml *)
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print_int 0 ;;
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print_char '\n' ;; |