/********************************************************/
		/**** Routine de lecture et visu d'un fichier GERBER ****/
		/********************************************************/

#include "fctsys.h"

#include "common.h"
#include "gerbview.h"
#include "pcbplot.h"

#include "protos.h"

#define IsNumber(x) ( ( ((x) >= '0') && ((x) <='9') ) ||\
					((x) == '-') || ((x) == '+')  || ((x) == '.'))
/* Format Gerber : NOTES :
Fonctions preparatoires:
	Gn =
	G01			interpolation lineaire ( trace de droites )
	G02,G20,G21	Interpolation circulaire , sens trigo < 0
	G03,G30,G31	Interpolation circulaire , sens trigo > 0
	G04			commentaire
	G06			Interpolation parabolique
	G07			Interpolation cubique
	G10			interpolation lineaire ( echelle 10x )
	G11			interpolation lineaire ( echelle 0.1x )
	G12			interpolation lineaire ( echelle 0.01x )
	G52			plot symbole reference par Dnn code
	G53			plot symbole reference par Dnn ; symbole tourne de -90 degres
	G54			Selection d'outil
	G55			Mode exposition photo
	G56			plot symbole reference par Dnn A code
	G57			affiche le symbole reference sur la console
	G58			plot et affiche le symbole reference sur la console
	G60			interpolation lineaire ( echelle 100x )
	G70			Unites = Inches
	G71			Unites = Millimetres
	G74			supprime interpolation circulaire sur 360 degre, revient a G01
	G75			Active interpolation circulaire sur 360 degre
	G90			Mode Coordonnees absolues
	G91			Mode Coordonnees Relatives

Coordonnees X,Y
	X,Y sont suivies de + ou - et de m+n chiffres (non separes)
			m = partie entiere
			n = partie apres la virgule
			 formats classiques : 	m = 2, n = 3 (format 2.3)
			 						m = 3, n = 4 (format 3.4)
 	ex:
	G__ X00345Y-06123 D__*

Outils et D_CODES
	numero d'outil ( identification des formes )
	1 a 99 	(classique)
	1 a 999
	D_CODES:

	D01 ... D9 = codes d'action:
	D01			= activation de lumiere (baisser de plume) lors du déplacement
	D02			= extinction de lumiere (lever de plume) lors du déplacement
	D03			= Flash
	D09			= VAPE Flash
	D51			= precede par G54 -> Select VAPE

	D10 ... D255 = Indentification d'outils ( d'ouvertures )
				Ne sont pas tj dans l'ordre ( voir tableau dans PCBPLOT.H)
*/

// Type d'action du phototraceur:
#define GERB_ACTIVE_DRAW 1		// activation de lumiere ( baisser de plume)
#define GERB_STOP_DRAW 2		// extinction de lumiere ( lever de plume)
#define GERB_FLASH 3			// Flash

#define NEGATE(nb) (nb) = -(nb)

/* Variables locales : */
static wxPoint LastPosition;

/* Routines Locales */

static void Append_1_Line_GERBER(int Dcode_index, WinEDA_GerberFrame * frame, wxDC * DC,
						const wxPoint & startpoint,const wxPoint & endpoint,
						int largeur);
static void Append_1_Flash_GERBER(int Dcode_index, WinEDA_GerberFrame * frame, wxDC * DC,
				const wxPoint & pos,const wxSize & size, int forme);
static void Append_1_Flash_ROND_GERBER(int Dcode_index, WinEDA_GerberFrame * frame, wxDC * DC,
				const wxPoint & pos, int diametre);
static void Append_1_SEG_ARC_GERBER(int Dcode_index,
			WinEDA_GerberFrame * frame, wxDC * DC,
			const wxPoint & startpoint, const wxPoint & endpoint,
			const wxPoint & rel_center, int largeur,
			bool trigo_sens, bool multiquadrant);



/****************************************************************/
static void Append_1_Flash_ROND_GERBER(int Dcode_tool,
						WinEDA_GerberFrame * frame,
						wxDC * DC, const wxPoint & pos,int diametre)
/****************************************************************/
/* Trace 1 flash ROND en position pos
*/
{
TRACK * track;

	track = new TRACK(frame->m_Pcb);
	track->Insert(frame->m_Pcb, NULL);

	track->m_Layer = frame->GetScreen()->m_Active_Layer;
	track->m_Width = diametre ;
	track->m_Start = track->m_End = pos;
	NEGATE(track->m_Start.y);
	NEGATE(track->m_End.y);
	track->m_NetCode = Dcode_tool;
	track->m_Shape = S_SPOT_CIRCLE;

	Trace_Segment(frame->DrawPanel, DC, track, GR_OR) ;
}

/**********************************************************************/
static void Append_1_Flash_GERBER(int Dcode_index,
					WinEDA_GerberFrame * frame, wxDC * DC,
					const wxPoint & pos,const wxSize & size,int forme)
/*********************************************************************/
/*
 Trace 1 flash rectangulaire ou ovale vertical ou horizontal
	donne par son centre et ses dimensions X et Y
*/
{
TRACK * track;
int width, len;

	width = min( size.x, size.y );
	len = max( size.x, size.y ) - width;

	track = new TRACK(frame->m_Pcb);
	track->Insert(frame->m_Pcb, NULL);

	track->m_Layer = frame->GetScreen()->m_Active_Layer;
	track->m_Width = width;
	track->m_Start = track->m_End = pos;
	NEGATE(track->m_Start.y);
	NEGATE(track->m_End.y);
	track->m_NetCode = Dcode_index;

	if ( forme == OVALE )
		track->m_Shape = S_SPOT_OVALE;
	else
		track->m_Shape = S_SPOT_RECT;	// donc rectangle ou carré

	len >>= 1;
	if ( size.x > size.y )	// ovale / rect horizontal
		{
		track->m_Start.x -= len ;
		track->m_End.x += len;
		}

	else	// ovale / rect vertical
		{
		track->m_Start.y -= len;
		track->m_End.y += len;
		}

	Trace_Segment(frame->DrawPanel, DC, track, GR_OR) ;
}


/******************************************************************/
static void Append_1_Line_GERBER(int Dcode_index,
			WinEDA_GerberFrame * frame, wxDC * DC,
			const wxPoint & startpoint, const wxPoint & endpoint,
			int largeur)
/********************************************************************/
{
TRACK * track;

	track = new TRACK( frame->m_Pcb );
	track->Insert(frame->m_Pcb, NULL);

	track->m_Layer = frame->GetScreen()->m_Active_Layer ;
	track->m_Width = largeur ;
	track->m_Start = startpoint;
	NEGATE(track->m_Start.y);
	track->m_End = endpoint;
	NEGATE(track->m_End.y);
	track->m_NetCode = Dcode_index;

	Trace_Segment(frame->DrawPanel, DC, track,GR_OR) ;
}

/*****************************************************************/
static void Append_1_SEG_ARC_GERBER(int Dcode_index,
			WinEDA_GerberFrame * frame, wxDC * DC,
			const wxPoint & startpoint, const wxPoint & endpoint,
			const wxPoint & rel_center, int largeur,
			bool trigo_sens, bool multiquadrant)
/*****************************************************************/

/* creation d'un arc:
	si multiquadrant == TRUE arc de 0 a 360 degres
		et rel_center est la coordonnée du centre relativement au startpoint

	si multiquadrant == FALSE arc de 0 à 90 entierement contenu dans le meme quadrant
		et rel_center est la coordonnée du centre relativement au startpoint,
		mais en VALEUR ABSOLUE et le signe des valeurs x et y de rel_center doit
		etre deduit de cette limite de 90 degres

*/
{
TRACK * track;
wxPoint center, delta;

	track = new TRACK( frame->m_Pcb );
	track->Insert(frame->m_Pcb, NULL);

	track->m_Shape = S_ARC;
	track->m_Layer = frame->GetScreen()->m_Active_Layer ;
	track->m_Width = largeur ;

	if ( multiquadrant )
		{
		center.x = startpoint.x + rel_center.x;
		center.y = startpoint.y - rel_center.y;

		if ( !trigo_sens )
			{
			track->m_Start = startpoint;
			track->m_End = endpoint;
			}
		else
			{
			track->m_Start = endpoint;
			track->m_End = startpoint;
			}
		}
	else
		{
		center = rel_center;
		delta.x = endpoint.x - startpoint.x;
		delta.y = endpoint.y - startpoint.y;
		// il faut corriger de signe de rel_center.x et rel_center.y
		// selon le quadrant ou on se trouve
		if ( (delta.x >= 0) && (delta.y >= 0) )	// 1er quadrant
			{
			center.x = - center.x;
			}

		else if ( (delta.x < 0) && (delta.y >= 0) )	// 2eme quadrant
			{
			center.x = - center.x;
			center.y = - center.y;
			}

		else if ( (delta.x < 0) && (delta.y < 0) )	// 3eme quadrant
			{
			center.y = - center.y;
			}
		else	// 4eme qadrant: les 2 coord sont >= 0!
			{
			}

		center.x += startpoint.x;
		center.y = startpoint.y + center.y ;

		if (  trigo_sens )
			{
			track->m_Start = startpoint;
			track->m_End = endpoint;
			}
		else
			{
			track->m_Start = endpoint;
			track->m_End = startpoint;
			}
		}

	track->m_NetCode = Dcode_index;
	track->m_Param = center.x;
	track->m_Sous_Netcode = center.y;

	NEGATE(track->m_Start.y);
	NEGATE(track->m_End.y);
	NEGATE(track->m_Sous_Netcode);

	Trace_Segment(frame->DrawPanel, DC, track,GR_OR);
}


	/**************************************************/
	/* Routines utilisées en lecture de ficher gerber */
	/**************************************************/
/* ces routines lisent la chaine de texte pointée par Text.
	Apres appel, Text pointe le debut de la sequence non lue
*/

/***********************************************/
wxPoint GERBER_Descr::ReadXYCoord(char * &Text)
/***********************************************/
/* Retourne la coord courante pointee par Text (XnnnnYmmmm)
*/
{
wxPoint pos = m_CurrentPos;
int type_coord = 0, current_coord, nbchar;
bool is_float = FALSE;
char * text;
char line[256];


	if ( m_Relative ) pos.x = pos.y = 0;
	else pos = m_CurrentPos;

	if ( Text == NULL ) return pos;

	text = line;
	while ( * Text )
	{
		if ( (* Text == 'X') || (* Text == 'Y') )
		{
			type_coord = * Text;
			Text++;
			text = line; nbchar = 0;
			while( IsNumber(*Text) )
			{
				if ( *Text == '.' ) is_float = TRUE;
				*(text++) = *(Text++);
				if ( (*Text >= '0') && (*Text <='9') ) nbchar++;
			}
			*text = 0;
			if ( is_float )
			{
				if ( m_GerbMetric )
					current_coord = (int) round(atof(line) / 0.00254);
				else
					current_coord = (int) round(atof(line) * PCB_INTERNAL_UNIT);
			}
			else
			{
				int fmt_scale = (type_coord == 'X') ? m_FmtScale.x : m_FmtScale.y;
				if ( m_NoTrailingZeros )
				{
					int min_digit = (type_coord == 'X') ? m_FmtLen.x : m_FmtLen.y;
					while (nbchar < min_digit) { *(text++) ='0'; nbchar++; }
					*text=0;
				}
				current_coord = atoi(line);
				double real_scale = 1.0;
				switch( fmt_scale)
				{
					case 0: real_scale = 10000.0;
						break;
					case 1: real_scale = 1000.0;
						break;
					case 2: real_scale = 100.0;
						break;
					case 3: real_scale = 10.0;
						break;
					case 4:
						break;
					case 5: real_scale = 0.1;
						break;
					case 6: real_scale = 0.01;
						break;
					case 7: real_scale = 0.001;
						break;
					case 8: real_scale = 0.0001;
						break;
					case 9: real_scale = 0.00001;
						break;
				}
				if ( m_GerbMetric ) real_scale = real_scale / 25.4;
				current_coord = (int) round(current_coord * real_scale);
			}
			if ( type_coord == 'X' ) pos.x = current_coord;
			else if ( type_coord == 'Y' ) pos.y = current_coord;
			continue;
		}
		else break;
	}

	if ( m_Relative )
		{
		pos.x += m_CurrentPos.x;
		pos.y += m_CurrentPos.y;
		}

	m_CurrentPos = pos;
	return pos;
}

/************************************************/
wxPoint GERBER_Descr::ReadIJCoord(char * &Text)
/************************************************/
/* Retourne la coord type InnJnn courante pointee par Text (InnnnJmmmm)
	Ces coordonnées sont relatives, donc si une coord est absente, sa valeur
	par defaut est 0
*/
{
wxPoint pos(0,0);
int type_coord = 0, current_coord, nbchar;
bool is_float = FALSE;
char * text;
char line[256];

	if ( Text == NULL ) return pos;

	text = line;
	while ( * Text )
	{
		if ( (* Text == 'I') || (* Text == 'J') )
		{
			type_coord = * Text;
			Text++;
			text = line; nbchar = 0;
			while( IsNumber(*Text) )
			{
				if ( *Text == '.' ) is_float = TRUE;
				*(text++) = *(Text++);
				if ( (*Text >= '0') && (*Text <='9') ) nbchar++;
			}
			*text = 0;
			if ( is_float )
			{
				if ( m_GerbMetric )
					current_coord = (int) round(atof(line) / 0.00254);
				else
					current_coord = (int) round(atof(line) * PCB_INTERNAL_UNIT);
			}
			else
			{
				int fmt_scale = (type_coord == 'I') ? m_FmtScale.x : m_FmtScale.y;
				if ( m_NoTrailingZeros )
				{
					int min_digit = (type_coord == 'I') ? m_FmtLen.x : m_FmtLen.y;
					while (nbchar < min_digit) { *(text++) ='0'; nbchar++; }
					*text=0;
				}
				current_coord = atoi(line);
				double real_scale = 1.0;
				switch( fmt_scale)
				{
					case 0: real_scale = 10000.0;
						break;
					case 1: real_scale = 1000.0;
						break;
					case 2: real_scale = 100.0;
						break;
					case 3: real_scale = 10.0;
						break;
					case 4:
						break;
					case 5: real_scale = 0.1;
						break;
					case 6: real_scale = 0.01;
						break;
					case 7: real_scale = 0.001;
						break;
					case 8: real_scale = 0.0001;
						break;
					case 9: real_scale = 0.00001;
						break;
				}
				if ( m_GerbMetric ) real_scale = real_scale / 25.4;
				current_coord = (int) round(current_coord * real_scale);
			}
			if ( type_coord == 'I' ) pos.x = current_coord;
			else if ( type_coord == 'J' ) pos.y = current_coord;
			continue;
		}
		else break;
	}
	m_IJPos = pos;
	return pos;
}

/*****************************************************/
int GERBER_Descr::ReturnGCodeNumber(char * &Text)
/*****************************************************/
/* Lit la sequence Gnn et retourne la valeur nn
*/
{
int ii = 0;
char * text;
char line[1024];

	if ( Text == NULL ) return 0;
	Text++;
	text = line;
	while( IsNumber(*Text) )
		{
		*(text++) = *(Text++);
		}
	*text = 0;
	ii = atoi(line);
	return ii;
}



/**************************************************/
int GERBER_Descr::ReturnDCodeNumber(char * &Text)
/**************************************************/
/* Lit la sequence Dnn et retourne la valeur nn
*/
{
int ii = 0;
char * text;
char line[1024];

	if ( Text == NULL ) return 0;
	Text ++;
	text = line;
	while( IsNumber(*Text) ) *(text++) = *(Text++);
	*text = 0;
	ii = atoi(line);
	return ii;
}

/******************************************************************/
bool GERBER_Descr::Execute_G_Command(char * &text, int G_commande)
/******************************************************************/

{
	switch (G_commande)
	{
		case GC_LINEAR_INTERPOL_1X:
			m_Iterpolation = GERB_INTERPOL_LINEAR_1X;
			break;

		case GC_CIRCLE_NEG_INTERPOL:
			m_Iterpolation = GERB_INTERPOL_ARC_NEG;
			break;

		case GC_CIRCLE_POS_INTERPOL:
			m_Iterpolation = GERB_INTERPOL_ARC_POS;
			break;

		case GC_COMMENT:
			text = NULL;
			break ;

		case GC_LINEAR_INTERPOL_10X:
			m_Iterpolation = GERB_INTERPOL_LINEAR_10X;
			break;

		case GC_LINEAR_INTERPOL_0P1X:
			m_Iterpolation = GERB_INTERPOL_LINEAR_01X;
			break;

		case GC_LINEAR_INTERPOL_0P01X:
			m_Iterpolation = GERB_INTERPOL_LINEAR_001X;
			break;

		case GC_SELECT_TOOL:
		{
			int D_commande = ReturnDCodeNumber(text);
			if ( D_commande < FIRST_DCODE) return FALSE;
			if (D_commande > (MAX_TOOLS-1)) D_commande = MAX_TOOLS-1;
			m_Current_Tool = D_commande;
			D_CODE * pt_Dcode = ReturnToolDescr(m_Layer, D_commande);
			if ( pt_Dcode ) pt_Dcode->m_InUse = TRUE;
			break;
		}

		case GC_SPECIFY_INCHES:
			m_GerbMetric = FALSE;		// FALSE = Inches, TRUE = metric
			break;

		case GC_SPECIFY_MILLIMETERS:
			m_GerbMetric = TRUE;		// FALSE = Inches, TRUE = metric
			break;

		case GC_TURN_OFF_360_INTERPOL:
			m_360Arc_enbl = FALSE;
			break;

		case GC_TURN_ON_360_INTERPOL:
			m_360Arc_enbl = TRUE;
			break;

		case GC_SPECIFY_ABSOLUES_COORD:
			m_Relative = FALSE;		// FALSE = absolute Coord, RUE = relative Coord
			break;

		case GC_SPECIFY_RELATIVEES_COORD:
			m_Relative = TRUE;		// FALSE = absolute Coord, RUE = relative Coord
			break;

		case GC_TURN_ON_POLY_FILL:
			m_PolygonFillMode = TRUE;
			break;

		case GC_TURN_OFF_POLY_FILL:
			m_PolygonFillMode = FALSE;
			m_PolygonFillModeState = 0;
			break;

		case GC_MOVE:	// Non existant
		default:
		{
			wxString msg; msg.Printf( wxT("G%.2d command not handled"),G_commande);
			DisplayError(NULL, msg);
			return FALSE;
		}
	}


	return TRUE;
}

/*****************************************************************************/
bool GERBER_Descr::Execute_DCODE_Command(WinEDA_GerberFrame * frame, wxDC * DC,
										char * &text, int D_commande)
/*****************************************************************************/
{
wxSize size(15, 15);
int shape = 1, dcode = 0;
D_CODE * pt_Tool = NULL;
wxString msg;

	if(D_commande >= FIRST_DCODE )	// This is a "Set tool" command
	{
		if (D_commande > (MAX_TOOLS-1)) D_commande = MAX_TOOLS-1;
		m_Current_Tool = D_commande;
		D_CODE * pt_Dcode = ReturnToolDescr(m_Layer, D_commande);
		if ( pt_Dcode ) pt_Dcode->m_InUse = TRUE;
		return TRUE;
	}

	else // D_commande = 0..9:	this is a pen command (usualy D1, D2 or D3)
	{
		m_Last_Pen_Command = D_commande;
	}

	if ( m_PolygonFillMode )	// Enter a polygon description:
	{
		switch ( D_commande )
		{
			case 1:	//code D01 Draw line, exposure ON
			{
			SEGZONE * edge_poly, *last;

				edge_poly = new SEGZONE( frame->m_Pcb );
				last = (SEGZONE*)frame->m_Pcb->m_Zone;
				if ( last ) while (last->Pnext ) last = (SEGZONE*)last->Pnext;
				edge_poly->Insert(frame->m_Pcb, last);

				edge_poly->m_Layer = frame->GetScreen()->m_Active_Layer ;
				edge_poly->m_Width = 1;
				edge_poly->m_Start = m_PreviousPos;
				NEGATE(edge_poly->m_Start.y);
				edge_poly->m_End = m_CurrentPos;
				NEGATE(edge_poly->m_End.y);
				edge_poly->m_NetCode = m_PolygonFillModeState;
				m_PreviousPos = m_CurrentPos;
				m_PolygonFillModeState = 1;
				break;
			}

			case 2:	//code D2: exposure OFF (i.e. "move to")
				m_PreviousPos = m_CurrentPos;
				m_PolygonFillModeState = 0;
				break;

			default:
				return FALSE;
		}
	}


	else switch ( D_commande )
	{
		case 1:	//code D01 Draw line, exposure ON
			pt_Tool = ReturnToolDescr(m_Layer, m_Current_Tool);
			if ( pt_Tool )
			{
				size = pt_Tool->m_Size;
				dcode = pt_Tool->m_Num_Dcode;
				shape = pt_Tool->m_Shape;
			}
			switch ( m_Iterpolation )
			{
				case GERB_INTERPOL_LINEAR_1X:
					Append_1_Line_GERBER(dcode,
								frame, DC,
								m_PreviousPos, m_CurrentPos,
								size.x);
					break;

				case GERB_INTERPOL_LINEAR_01X:
				case GERB_INTERPOL_LINEAR_001X:
				case GERB_INTERPOL_LINEAR_10X:
					wxBell();
					break;

				case GERB_INTERPOL_ARC_NEG:
					Append_1_SEG_ARC_GERBER(dcode,
								frame, DC,
								m_PreviousPos, m_CurrentPos, m_IJPos,
								size.x, FALSE, m_360Arc_enbl);
					break;

				case GERB_INTERPOL_ARC_POS:
					Append_1_SEG_ARC_GERBER(dcode,
								frame, DC,
								m_PreviousPos, m_CurrentPos, m_IJPos,
								size.x, TRUE, m_360Arc_enbl);
					break;

				default:
					msg.Printf( wxT("Execute_DCODE_Command: interpol error (type %X)"),
						m_Iterpolation);
					DisplayError(frame, msg);
					break;
			}
			m_PreviousPos = m_CurrentPos;
			break;

		case 2:	//code D2: exposure OFF (i.e. "move to")
			m_PreviousPos = m_CurrentPos;
			break;

		case 3:	// code D3: flash aperture
			pt_Tool = ReturnToolDescr(m_Layer, m_Current_Tool);
			if ( pt_Tool )
			{
				size = pt_Tool->m_Size;
				dcode = pt_Tool->m_Num_Dcode;
				shape = pt_Tool->m_Shape;
			}

			switch (shape)
			{
				case GERB_LINE:
				case GERB_CIRCLE :
					Append_1_Flash_ROND_GERBER(dcode,
												frame, DC,
												m_CurrentPos,
												size.x);
					break ;

				case GERB_OVALE :
					 Append_1_Flash_GERBER( dcode,
											frame, DC, m_CurrentPos,
											size,
											OVALE);
					 break ;

				case GERB_RECT:
					 Append_1_Flash_GERBER(	dcode,
											frame, DC, m_CurrentPos,
											size,
											RECT);
					 break ;

				default:	// Special (Macro) : Non implanté
					break;

			}
			m_PreviousPos = m_CurrentPos;
			break;

		default:
			return FALSE;
	}

	return TRUE;
}