#ifndef T_L2LAUTOCLOSER_H

#define T_L2LAUTOCLOSER_H

#include "tgeometry.h"

#undef DVAPI

#undef DVVAR

#ifdef TVECTORIMAGE_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

#ifdef WIN32

#pragma warning(disable : 4251)

#endif

//forward declaration

class TStroke;

//-----------------------------------------------------------------------------

//! Line-to-line autocloser

class DVAPI TL2LAutocloser

{

	class Imp;

	Imp *m_imp;

public:

	TL2LAutocloser();

	~TL2LAutocloser();

	struct Segment {

		//! the segments returned by the Line-to-line autocloser

		TStroke *stroke0, *stroke1; // the two involved strokes

		double w0, w1;				// the w-parameters

		TThickPoint p0, p1;			// the related points

		double dist2;				// the (squared) points distance

	};

	//! segments longer than sqrt(dist2) are not considered. the default is 50^2

	void setMaxDistance2(double dist2);

	double getMaxDistance2() const;

	//! search line-to-line autoclosing segments.

	//! Note: it computes and caches some information about stroke0 and stroke1

	//! you are not supposed to change strokes between two subsequent calls to search()

	void search(std::vector<segment> &segments, TStroke *stroke0, TStroke *stroke1);</segment>

	//! use this method if you have already computed the intersections

	void search(

		std::vector<segment> &segments,</segment>

		TStroke *stroke0, TStroke *stroke1,

		const std::vector<doublepair> &intersection);</doublepair>

	//! debug only. show the internal state related to the last performed search

	void draw();

private:

	// not implemented

	TL2LAutocloser(const TL2LAutocloser &);

	const TL2LAutocloser &operator=(const TL2LAutocloser &);

};

//---------------------------------------------------------------------------------------

#endif // T_L2LAUTOCLOSER_H