1 /**
2 * \file
3 * \brief Various geometrical calculations
4 *
5 * Authors:
6 * Nathan Hurst <njh@mail.csse.monash.edu.au>
7 *
8 * Copyright (C) 1999-2002 authors
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it either under the terms of the GNU Lesser General Public
12 * License version 2.1 as published by the Free Software Foundation
13 * (the "LGPL") or, at your option, under the terms of the Mozilla
14 * Public License Version 1.1 (the "MPL"). If you do not alter this
15 * notice, a recipient may use your version of this file under either
16 * the MPL or the LGPL.
17 *
18 * You should have received a copy of the LGPL along with this library
19 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * You should have received a copy of the MPL along with this library
22 * in the file COPYING-MPL-1.1
23 *
24 * The contents of this file are subject to the Mozilla Public License
25 * Version 1.1 (the "License"); you may not use this file except in
26 * compliance with the License. You may obtain a copy of the License at
27 * http://www.mozilla.org/MPL/
28 *
29 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
30 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
31 * the specific language governing rights and limitations.
32 *
33 */
34 #ifndef LIB2GEOM_SEEN_GEOM_H
35 #define LIB2GEOM_SEEN_GEOM_H
37 //TODO: move somewhere else
39 #include <vector>
40 #include <2geom/forward.h>
41 #include <boost/optional/optional.hpp>
42 #include <2geom/bezier-curve.h>
43 #include <2geom/line.h>
45 namespace Geom {
47 enum IntersectorKind {
48 intersects = 0,
49 parallel,
50 coincident,
51 no_intersection
52 };
54 int
55 intersector_ccw(const Geom::Point& p0, const Geom::Point& p1,
56 const Geom::Point& p2);
58 /* intersectors */
60 #if 0
61 // Use the new routines provided in line.h
63 IntersectorKind
64 line_intersection(Geom::Point const &n0, double const d0,
65 Geom::Point const &n1, double const d1,
66 Geom::Point &result);
68 IntersectorKind
69 segment_intersect(Geom::Point const &p00, Geom::Point const &p01,
70 Geom::Point const &p10, Geom::Point const &p11,
71 Geom::Point &result);
73 IntersectorKind
74 line_twopoint_intersect(Geom::Point const &p00, Geom::Point const &p01,
75 Geom::Point const &p10, Geom::Point const &p11,
76 Geom::Point &result);
77 #endif
79 #if 0
80 std::vector<Geom::Point>
81 rect_line_intersect(Geom::Point const &E, Geom::Point const &F,
82 Geom::Point const &p0, Geom::Point const &p1);
83 #endif
85 boost::optional<Geom::LineSegment>
86 rect_line_intersect(Geom::Rect &r,
87 Geom::LineSegment ls);
89 boost::optional<Geom::LineSegment>
90 rect_line_intersect(Geom::Rect &r,
91 Geom::Line l);
93 int centroid(std::vector<Geom::Point> const &p, Geom::Point& centroid, double &area);
95 }
97 #endif
99 /*
100 Local Variables:
101 mode:c++
102 c-file-style:"stroustrup"
103 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
104 indent-tabs-mode:nil
105 fill-column:99
106 End:
107 */
108 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :