(* 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