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/**
* \file
* \brief \todo brief description
*
* Authors:
* ? <?@?.?>
*
* Copyright ?-? authors
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
*/
#ifndef __2GEOM_REGION_H
#define __2GEOM_REGION_H
#include <2geom/path.h>
#include <2geom/path-intersection.h>
namespace Geom {
class Shape;
class Region {
friend Crossings crossings(Region const &a, Region const &b);
friend class Shape;
friend Shape shape_boolean(bool rev, Shape const & a, Shape const & b, CrossingSet const & crs);
Path boundary;
mutable OptRect box;
bool fill;
public:
Region() : fill(true) {}
explicit Region(Path const &p) : boundary(p) { fill = path_direction(p); }
Region(Path const &p, bool dir) : boundary(p), fill(dir) {}
Region(Path const &p, OptRect const &b) : boundary(p), box(b) { fill = path_direction(p); }
Region(Path const &p, OptRect const &b, bool dir) : boundary(p), box(b), fill(dir) {}
unsigned size() const { return boundary.size(); }
bool isFill() const { return fill; }
Region asFill() const { if(fill) return Region(*this); else return inverse(); }
Region asHole() const { if(fill) return inverse(); else return Region(*this); }
operator Path() const { return boundary; }
Rect boundsFast() const {
if(!box) box = boundary.boundsFast(); /// \todo this doesn't look right at all...
return *box;
}
bool contains(Point const &p) const {
if(box && !box->contains(p)) return false;
return Geom::contains(boundary, p);
}
bool contains(Region const &other) const { return contains(other.boundary.initialPoint()); }
bool includes(Point const &p) const {
return logical_xor(!fill, contains(p));
}
Region inverse() const { return Region(boundary.reverse(), box, !fill); }
Region operator*(Matrix const &m) const;
bool invariants() const;
};
typedef std::vector<Region> Regions;
unsigned outer_index(Regions const &ps);
//assumes they're already sanitized somewhat
inline Regions regions_from_paths(std::vector<Path> const &ps) {
Regions res;
for(unsigned i = 0; i < ps.size(); i++)
res.push_back(Region(ps[i]));
return res;
}
inline std::vector<Path> paths_from_regions(Regions const &rs) {
std::vector<Path> res;
for(unsigned i = 0; i < rs.size(); i++)
res.push_back(rs[i]);
return res;
}
Regions sanitize_path(Path const &p);
Regions region_boolean(bool rev, Region const & a, Region const & b, Crossings const &cr);
Regions region_boolean(bool rev, Region const & a, Region const & b, Crossings const & cr_a, Crossings const & cr_b);
inline Regions region_boolean(bool rev, Region const & a, Region const & b) {
return region_boolean(rev, a, b, crossings(a, b));
}
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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