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/*************************************************************************
** BoundingBox.h **
** **
** This file is part of dvisvgm -- the DVI to SVG converter **
** Copyright (C) 2005-2009 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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 3 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 General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef BOUNDINGBOX_H
#define BOUNDINGBOX_H
#include <ostream>
#include <string>
#include "Length.h"
#include "MessageException.h"
#include "Pair.h"
#include "macros.h"
#include "types.h"
class Matrix;
struct BoundingBoxException : MessageException
{
BoundingBoxException (const string &msg) : MessageException(msg) {}
};
class BoundingBox
{
public:
BoundingBox ();
BoundingBox (double ulxx, double ulyy, double lrxx, double lryy);
BoundingBox (const DPair &p1, const DPair &p2);
BoundingBox (const Length &ulxx, const Length &ulyy, const Length &lrxx, const Length &lryy);
BoundingBox (const string &boxstr) {set(boxstr);}
void set (const string &boxstr);
void embed (double x, double y);
void embed (const BoundingBox &bb);
void embed (const DPair &p) {embed(p.x(), p.y());}
void embed (const DPair &c, double r);
void expand (double m);
bool intersect (const BoundingBox &bbox);
double minX () const {return ulx;}
double minY () const {return uly;}
double maxX () const {return lrx;}
double maxY () const {return lry;}
double width () const {return lrx-ulx;}
double height () const {return lry-uly;}
void lock () {_locked = true;}
void unlock () {_locked = false;}
void operator += (const BoundingBox &bb);
void transform (const Matrix &tm);
std::string toSVGViewBox () const;
std::ostream& write (std::ostream &os) const;
private:
double ulx, uly; ///< coordinates of upper left vertex (in TeX point units)
double lrx, lry; ///< coordinates of lower right vertex (in TeX point unitx)
bool _valid : 1; ///< true if the box coordinates are properly set
bool _locked : 1; ///< if true, the box data is read-only
};
IMPLEMENT_OUTPUT_OPERATOR(BoundingBox)
#endif
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