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// Copyright (C) 2004 Pino Toscano <toscano.pino@tiscali.it>
// 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301, USA.
#ifndef KIG_OBJECTS_POLYGON_IMP_H
#define KIG_OBJECTS_POLYGON_IMP_H
#include "object_imp.h"
#include "../misc/coordinate.h"
#include <vector>
/**
* An ObjectImp representing a polygon.
*/
class PolygonImp
: public ObjectImp
{
uint mnpoints;
std::vector<Coordinate> mpoints;
Coordinate mcenterofmass;
public:
typedef ObjectImp Parent;
/**
* Returns the ObjectImpType representing the PolygonImp type..
*/
static const ObjectImpType* stype();
static const ObjectImpType* stype3();
static const ObjectImpType* stype4();
/**
* Constructs a polygon.
*/
PolygonImp( const std::vector<Coordinate>& points );
PolygonImp( const uint nsides, const std::vector<Coordinate>& points,
const Coordinate& centerofmass );
~PolygonImp();
PolygonImp* copy() const;
Coordinate attachPoint() const;
ObjectImp* transform( const Transformation& ) const;
void draw( KigPainter& p ) const;
bool contains( const Coordinate& p, int width, const KigWidget& ) const;
bool inRect( const Rect& r, int width, const KigWidget& ) const;
bool valid() const;
Rect surroundingRect() const;
const uint numberOfProperties() const;
const QCStringList properties() const;
const QCStringList propertiesInternalNames() const;
ObjectImp* property( uint which, const KigDocument& w ) const;
const char* iconForProperty( uint which ) const;
const ObjectImpType* impRequirementForProperty( uint which ) const;
bool isPropertyDefinedOnOrThroughThisImp( uint which ) const;
const ObjectImpType* type() const;
void visit( ObjectImpVisitor* vtor ) const;
/**
* Returns the vector with polygon points.
*/
const std::vector<Coordinate> points() const;
/**
* Returns the center of mass of the polygon.
*/
const Coordinate centerOfMass() const;
/**
* Returns the number of points of this polygon.
*/
const uint npoints() const;
bool equals( const ObjectImp& rhs ) const;
bool isInPolygon( const Coordinate& p ) const;
int windingNumber() const;
bool isMonotoneSteering() const;
bool isConvex() const;
};
std::vector<Coordinate> computeConvexHull( const std::vector<Coordinate>& points );
#endif
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