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(* Graph viewer
* Copyright (C) 2010 Jérôme Vouillon
* Laboratoire PPS - CNRS Université Paris Diderot
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
open Scene
let offset_command x y c =
match c with
| Move_to (x1, y1) -> Move_to (x1 -. x, y1 -. y)
| Curve_to (x1, y1, x2, y2, x3, y3) ->
Curve_to (x1 -. x, y1 -. y, x2 -. x, y2 -. y, x3 -. x, y3 -. y)
let offset_element x y e =
match e with
| Path (cmds, c1, c2) -> Path (Array.map (fun c -> offset_command x y c) cmds, c1, c2)
| Polygon (pts, c1, c2) ->
Polygon (Array.map (fun (x1, y1) -> x1 -. x, y1 -. y) pts, c1, c2)
| Ellipse (cx, cy, rx, ry, c1, c2) -> Ellipse (cx -. x, cy -. y, rx, ry, c1, c2)
| Text (x1, y1, txt, font, c1, c2) -> Text (x1 -. x, y1 -. y, txt, font, c1, c2)
let _ =
let ch = if Array.length Sys.argv > 1 then open_in Sys.argv.(1) else stdin in
let _, g = Dot_graph.of_channel ch in
let bbox, scene = Dot_render.f g in
let x1, y1, x2, y2 = bbox in
let l = Scene.get scene in
let l = Array.map (fun e -> offset_element x1 y1 e) l in
let bbox = 0., 0., x2 -. x1, y2 -. y1 in
let i = Cairo.image_surface_create Cairo.FORMAT_ARGB32 1024 1024 in
let bboxes = Scene_extents.compute (Cairo.create i) l in
Format.printf
"@[<1>[0,@,%a,@,%a,@,%a]@]@."
Scene_json.rect_stringify
bbox
Scene_json.rect_array_stringify
bboxes
Scene_json.stringify
l
|
