/*******************************************************************/
/*	class_track.h: definition des structures de donnees type track */
/*******************************************************************/

#ifndef CLASS_TRACK_H
#define CLASS_TRACK_H

#include "base_struct.h"

/* Type des Vias (shape)*/

/* Forme des Vias ( parametre .shape ) */
#define VIA_NORMALE 3		/* type via : traversante (throught via) */
#define VIA_ENTERREE 2		/* type via : enterree ou aveugle (blind via) */
#define VIA_BORGNE 1		/* type via : borgne ou demi-traversante (buried via) */
#define VIA_NOT_DEFINED 0		/* reserved */
#define SQUARE_VIA 0x80000000		/* Flag pour forme carree */


/***/

class TRACK: public EDA_BaseLineStruct
{
public:
	int m_Shape;					// vias: shape and type, Track = shape..
	int m_Drill;					// for vias: via drill (- 1 for default value)
	EDA_BaseStruct * start,* end;	// pointers on a connected item (pad or track)
	int m_NetCode;					// Net number
	int m_Sous_Netcode;				/* In rastnest routines : for the current net,
										block number (number common to the current connected items found) */
									// chain = 0 indique une connexion non encore traitee
	int m_Param;					// Auxiliary variable ( used in some computations )

public:
	TRACK(EDA_BaseStruct * StructFather, DrawStructureType idtype = TYPETRACK);
	TRACK(const TRACK & track);

	TRACK * Next(void);	// Retourne le chainage avant
	TRACK * Back(void)	// Retourne le chainage avant
	{
		return (TRACK*) Pback;
	}

	/* supprime du chainage la structure Struct */
	void UnLink( void );

	// Read/write data
	bool WriteTrackDescr(FILE * File);

	/* Ajoute un element a la liste */
	void Insert(BOARD * Pcb, EDA_BaseStruct * InsertPoint);

	/* Recherche du meilleur point d'insertion */
	TRACK * GetBestInsertPoint( BOARD * Pcb);

	/* Copie d'un Element d'une chaine de n elements */
	TRACK * Copy( int NbSegm = 1 );

	/* Recherche du debut du net
		( les elements sont classes par net_code croissant ) */
	TRACK * GetStartNetCode(int NetCode );
	/* Recherche de la fin du net */
	TRACK * GetEndNetCode(int NetCode);

	/* Display on screen: */
	void Draw(WinEDA_DrawPanel * panel, wxDC * DC, int draw_mode);

	/* divers */
	int Shape(void) { return m_Shape & 0xFF; }

	int ReturnMaskLayer(void);
	int IsPointOnEnds(const wxPoint & point, int min_dist = 0);
	bool IsNull(void);	// return TRUE if segment lenght = 0
};

class SEGZONE: public TRACK
{
public:
	SEGZONE(EDA_BaseStruct * StructFather);
};

class SEGVIA: public TRACK
{
public:
	SEGVIA(EDA_BaseStruct * StructFather);
	bool IsViaOnLayer(int layer);
	void SetLayerPair(int top_layer, int bottom_layer);
	void ReturnLayerPair(int * top_layer, int * bottom_layer);
};



#endif /* CLASS_TRACK_H */