File: scene.ml

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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.
 *)

type command =
  | Move_to of float * float
  | Curve_to of float * float * float * float * float * float

type color = float * float * float

type ('color, 'font, 'text) element =
  | Path of command array * 'color option * 'color option
  | Polygon of (float * float) array * 'color option * 'color option
  | Ellipse of float * float * float * float * 'color option * 'color option
  | Text of float * float * 'text * 'font * 'color option * 'color option

(****)

let rectangle (x1, y1, x2, y2) fill stroke =
  Polygon ([| x1, y1; x2, y1; x2, y2; x1, y2 |], fill, stroke)

(****)

type ('color, 'font, 'text) t = ('color, 'font, 'text) element list ref

type cairo_t = (float * float * float, string * float, string) t

let make () = ref []

let add sc e = sc := e :: !sc

let get sc = Array.of_list (List.rev !sc)