kicad/pcbnew/zones.cpp

/////////////////////////////////////////////////////////////////////////////

// Name:        zones.cpp
// Purpose:
// Author:      jean-pierre Charras
// Modified by:
// Created:     25/01/2006 11:35:19
// RCS-ID:
// Copyright:   GNU License
// Licence:     GNU License
/////////////////////////////////////////////////////////////////////////////

// Generated by DialogBlocks (unregistered), 25/01/2006 11:35:19

#if defined (__GNUG__) && !defined (NO_GCC_PRAGMA)
#pragma implementation "zones.h"
#endif

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

////@begin includes
////@end includes

#include "zones.h"

////@begin XPM images
////@end XPM images

/* Local functions */
static void Display_Zone_Netname( WinEDA_PcbFrame* frame );
static void Exit_Zones( WinEDA_DrawPanel* Panel, wxDC* DC );
static void Show_Zone_Edge_While_MoveMouse( WinEDA_DrawPanel* panel, wxDC* DC, bool erase );
static void Genere_Segments_Zone( WinEDA_PcbFrame* frame, wxDC* DC, int net_code );
static bool Genere_Pad_Connexion( WinEDA_PcbFrame* frame, wxDC* DC, int layer );

/* Local variables */
static bool          Zone_Debug        = FALSE;
static bool          Zone_45_Only      = FALSE;
static bool          Zone_Exclude_Pads = TRUE;
static bool          s_Zone_Create_Thermal_Relief = TRUE;

/* Time stamp comon to all segments relative to the new created zone */
static unsigned long s_TimeStamp; 

/*!
 * WinEDA_ZoneFrame type definition
 */

IMPLEMENT_DYNAMIC_CLASS( WinEDA_ZoneFrame, wxDialog )

/*!
 * WinEDA_ZoneFrame event table definition
 */

BEGIN_EVENT_TABLE( WinEDA_ZoneFrame, wxDialog )

////@begin WinEDA_ZoneFrame event table entries
EVT_BUTTON( ID_FILL_ZONE, WinEDA_ZoneFrame::ExecFillZone )

EVT_BUTTON( wxID_CANCEL, WinEDA_ZoneFrame::OnCancelClick )

EVT_BUTTON( ID_SET_OPTIONS_ZONE, WinEDA_ZoneFrame::ExecFillZone )

////@end WinEDA_ZoneFrame event table entries

END_EVENT_TABLE()

/*!
 * WinEDA_ZoneFrame constructors
 */

WinEDA_ZoneFrame::WinEDA_ZoneFrame()
{
}


WinEDA_ZoneFrame::WinEDA_ZoneFrame( WinEDA_PcbFrame* parent,
                                    wxWindowID       id,
                                    const wxString&  caption,
                                    const wxPoint&   pos,
                                    const wxSize&    size,
                                    long             style )
{
    m_Parent = parent;
    Create( parent, id, caption, pos, size, style );
}


/*!
 * WinEDA_ZoneFrame creator
 */

bool WinEDA_ZoneFrame::Create( wxWindow*       parent,
                               wxWindowID      id,
                               const wxString& caption,
                               const wxPoint&  pos,
                               const wxSize&   size,
                               long            style )
{
////@begin WinEDA_ZoneFrame member initialisation
    m_GridCtrl = NULL;
    m_ClearanceValueTitle = NULL;
    m_ZoneClearanceCtrl   = NULL;
    m_FillOpt = NULL;
    m_OrientEdgesOpt = NULL;

////@end WinEDA_ZoneFrame member initialisation

////@begin WinEDA_ZoneFrame creation
    SetExtraStyle( GetExtraStyle() | wxWS_EX_BLOCK_EVENTS );
    wxDialog::Create( parent, id, caption, pos, size, style );

    CreateControls();
    GetSizer()->Fit( this );
    GetSizer()->SetSizeHints( this );
    Centre();

////@end WinEDA_ZoneFrame creation

    return true;
}


/*!
 * Control creation for WinEDA_ZoneFrame
 */

void WinEDA_ZoneFrame::CreateControls()
{
    SetFont( *g_DialogFont );

////@begin WinEDA_ZoneFrame content construction
    // Generated by DialogBlocks, 03/03/2006 13:36:21 (unregistered)

    WinEDA_ZoneFrame*     itemDialog1 = this;

    wxBoxSizer*           itemBoxSizer2 = new wxBoxSizer( wxHORIZONTAL );
    itemDialog1->SetSizer( itemBoxSizer2 );

    wxBoxSizer*           itemBoxSizer3 = new wxBoxSizer( wxVERTICAL );
    itemBoxSizer2->Add( itemBoxSizer3, 0, wxGROW | wxALL, 5 );

    static const wxString m_GridCtrlStrings[] = {
        _( "0.00000" ),
        _( "0.00000" ),
        _( "0.00000" ),
        _( "0.00000" )
    };

    m_GridCtrl = new wxRadioBox( itemDialog1, ID_RADIOBOX, _(
                                     "Grid size:" ), wxDefaultPosition, wxDefaultSize, 4,
                                 m_GridCtrlStrings, 1, wxRA_SPECIFY_COLS );
    itemBoxSizer3->Add( m_GridCtrl, 0, wxALIGN_LEFT | wxALL, 5 );

    m_ClearanceValueTitle = new wxStaticText( itemDialog1, wxID_STATIC,
                                              _( "Zone clearance value (mm):" ),
                                              wxDefaultPosition, wxDefaultSize, 0 );
    itemBoxSizer3->Add( m_ClearanceValueTitle,
                        0,
                        wxALIGN_LEFT | wxLEFT | wxRIGHT | wxTOP | wxADJUST_MINSIZE,
                        5 );

    m_ZoneClearanceCtrl = new wxTextCtrl( itemDialog1, ID_TEXTCTRL, _T(
                                              "" ), wxDefaultPosition, wxDefaultSize, 0 );
    itemBoxSizer3->Add( m_ZoneClearanceCtrl, 0, wxALIGN_LEFT | wxLEFT | wxRIGHT | wxBOTTOM, 5 );

    itemBoxSizer2->Add( 5, 5, 0, wxGROW | wxALL, 5 );

    wxBoxSizer*           itemBoxSizer8 = new wxBoxSizer( wxVERTICAL );
    itemBoxSizer2->Add( itemBoxSizer8, 0, wxGROW | wxALL, 5 );

    static const wxString m_FillOptStrings[] = {
        _( "Include Pads" ),
        _( "Thermal" ),
        _( "Exclude Pads" )
    };

    m_FillOpt = new wxRadioBox( itemDialog1, ID_RADIOBOX1, _(
                                    "Pad options:" ), wxDefaultPosition, wxDefaultSize, 3,
                                m_FillOptStrings, 1, wxRA_SPECIFY_COLS );
    itemBoxSizer8->Add( m_FillOpt, 0, wxALIGN_LEFT | wxALL, 5 );

    static const wxString m_OrientEdgesOptStrings[] = {
        _( "Any" ),
        _( "H , V and 45 deg" )
    };

    m_OrientEdgesOpt = new wxRadioBox( itemDialog1, ID_RADIOBOX2,
                                       _( "Zone edges orient:" ), wxDefaultPosition,
                                       wxDefaultSize, 2, m_OrientEdgesOptStrings, 1,
                                       wxRA_SPECIFY_COLS );

    itemBoxSizer8->Add( m_OrientEdgesOpt, 0, wxALIGN_RIGHT | wxALL, 5 );

    itemBoxSizer2->Add( 5, 5, 0, wxGROW | wxALL, 5 );

    wxBoxSizer* itemBoxSizer12 = new wxBoxSizer( wxVERTICAL );
    itemBoxSizer2->Add( itemBoxSizer12, 0, wxALIGN_TOP | wxALL, 5 );

    wxButton*   itemButton13 = new wxButton( itemDialog1, ID_FILL_ZONE,
                                             _( "Fill" ), wxDefaultPosition, wxDefaultSize, 0 );

    itemButton13->SetDefault();
    itemButton13->SetForegroundColour( wxColour( 204, 0, 0 ) );
    itemBoxSizer12->Add( itemButton13, 0, wxGROW | wxALL, 5 );

    wxButton* itemButton14 = new wxButton( itemDialog1, wxID_CANCEL,
                                           _( "&Cancel" ), wxDefaultPosition, wxDefaultSize, 0 );

    itemButton14->SetForegroundColour( wxColour( 0, 0, 255 ) );
    itemBoxSizer12->Add( itemButton14, 0, wxGROW | wxALL, 5 );

    wxButton* itemButton15 = new wxButton( itemDialog1, ID_SET_OPTIONS_ZONE,
                                           _(
                                               "Update Options" ), wxDefaultPosition,
                                           wxDefaultSize, 0 );

    itemButton15->SetForegroundColour( wxColour( 0, 100, 0 ) );
    itemBoxSizer12->Add( itemButton15, 0, wxGROW | wxALL, 5 );

    itemBoxSizer2->Add( 5, 5, 0, wxGROW | wxALL, 5 );

////@end WinEDA_ZoneFrame content construction
    wxString title = _( "Zone clearance value:" ) + ReturnUnitSymbol( g_UnitMetric );
    m_ClearanceValueTitle->SetLabel( title );

    title = _( "Grid :" ) + ReturnUnitSymbol( g_UnitMetric );;
    m_GridCtrl->SetLabel( title );

    if( g_DesignSettings.m_ZoneClearence == 0 )
        g_DesignSettings.m_ZoneClearence = g_DesignSettings.m_TrackClearence;
    title = ReturnStringFromValue( g_UnitMetric,
                                   g_DesignSettings.m_ZoneClearence,
                                   m_Parent->m_InternalUnits );
    m_ZoneClearanceCtrl->SetValue( title );

    if( Zone_45_Only )
        m_OrientEdgesOpt->SetSelection( 1 );

    static const int GridList[4] = { 50, 100, 250, 500 };
    int selection = 0;

    for( unsigned ii = 0; ii < m_GridCtrl->GetCount(); ii++ )
    {
        wxString msg = ReturnStringFromValue( g_UnitMetric,
                                              GridList[ii],
                                              m_Parent->m_InternalUnits );
        m_GridCtrl->SetString( ii, msg );
        if( g_GridRoutingSize == GridList[ii] )
            selection = ii;
    }

    m_GridCtrl->SetSelection( selection );

    if( Zone_Exclude_Pads )
    {
        if( s_Zone_Create_Thermal_Relief )
            m_FillOpt->SetSelection( 1 );
        else
            m_FillOpt->SetSelection( 2 );
    }
}


/*!
 * Should we show tooltips?
 */

bool WinEDA_ZoneFrame::ShowToolTips()
{
    return true;
}


/*!
 * Get bitmap resources
 */

wxBitmap WinEDA_ZoneFrame::GetBitmapResource( const wxString& name )
{
    // Bitmap retrieval
////@begin WinEDA_ZoneFrame bitmap retrieval
    wxUnusedVar( name );
    return wxNullBitmap;

////@end WinEDA_ZoneFrame bitmap retrieval
}


/*!
 * Get icon resources
 */

wxIcon WinEDA_ZoneFrame::GetIconResource( const wxString& name )
{
    // Icon retrieval
////@begin WinEDA_ZoneFrame icon retrieval
    wxUnusedVar( name );
    return wxNullIcon;

////@end WinEDA_ZoneFrame icon retrieval
}


/*!
 * wxEVT_COMMAND_BUTTON_CLICKED event handler for wxID_CANCEL
 */

void WinEDA_ZoneFrame::OnCancelClick( wxCommandEvent& event )
{
////@begin wxEVT_COMMAND_BUTTON_CLICKED event handler for wxID_CANCEL in WinEDA_ZoneFrame.
    // Before editing this code, remove the block markers.
    event.Skip();

////@end wxEVT_COMMAND_BUTTON_CLICKED event handler for wxID_CANCEL in WinEDA_ZoneFrame.
}


/*!
 * wxEVT_COMMAND_BUTTON_CLICKED event handler for ID_BUTTON2
 */
/***********************************************************/
void WinEDA_ZoneFrame::ExecFillZone( wxCommandEvent& event )
/***********************************************************/
{
    switch( m_FillOpt->GetSelection() )
    {
    case 0:
        Zone_Exclude_Pads = FALSE;
        s_Zone_Create_Thermal_Relief = FALSE;
        break;

    case 1:
        Zone_Exclude_Pads = TRUE;
        s_Zone_Create_Thermal_Relief = TRUE;
        break;

    case 2:
        Zone_Exclude_Pads = TRUE;
        s_Zone_Create_Thermal_Relief = FALSE;
        break;
    }

    switch( m_GridCtrl->GetSelection() )
    {
    case 0:
        g_GridRoutingSize = 50;
        break;

    case 1:
        g_GridRoutingSize = 100;
        break;

    case 2:
        g_GridRoutingSize = 250;
        break;

    case 3:
        g_GridRoutingSize = 500;
        break;
    }

    wxString txtvalue = m_ZoneClearanceCtrl->GetValue();
    g_DesignSettings.m_ZoneClearence =
        ReturnValueFromString( g_UnitMetric, txtvalue, m_Parent->m_InternalUnits );
    if( m_OrientEdgesOpt->GetSelection() == 0 )
        Zone_45_Only = FALSE;
    else
        Zone_45_Only = TRUE;

    if( event.GetId() == ID_SET_OPTIONS_ZONE )
        EndModal( 1 );
    else
        EndModal( 0 );
}


/**************************************************************/
void WinEDA_PcbFrame::Edit_Zone_Width( wxDC* DC, SEGZONE* aZone )
/**************************************************************/

/* Edite (change la largeur des segments) la zone Zone.
 *  La zone est constituee des segments zones de meme TimeStamp
 */
{
    bool          modify = FALSE;
    double        f_new_width;
    int           w_tmp;
    wxString      Line;
    wxString      Msg( _( "New zone segment width: " ) );

    if( aZone == NULL )
        return;

    f_new_width = To_User_Unit( g_UnitMetric, aZone->m_Width, GetScreen()->GetInternalUnits() );

    Line.Printf( wxT( "%.4f" ), f_new_width );

    Msg += g_UnitMetric ? wxT( "(mm)" ) : wxT( "(\")" );
    if( Get_Message( Msg, Line, this ) != 0 )
        return;

    w_tmp = g_DesignSettings.m_CurrentTrackWidth;
    Line.ToDouble( &f_new_width );

    g_DesignSettings.m_CurrentTrackWidth = From_User_Unit( g_UnitMetric,
                               f_new_width, GetScreen()->GetInternalUnits() );

    for( SEGZONE* zone = m_Pcb->m_Zone;  zone;  zone = zone->Next() )
    {
        if( zone->m_TimeStamp == aZone->m_TimeStamp )
        {
            modify = TRUE;
            Edit_TrackSegm_Width( DC, zone );
        }
    }

    g_DesignSettings.m_CurrentTrackWidth = w_tmp;
    if( modify )
    {
        GetScreen()->SetModify();
        DrawPanel->Refresh();
    }
}


/**********************************************************/
void WinEDA_PcbFrame::Delete_Zone( wxDC* DC, SEGZONE* aZone )
/**********************************************************/

/* Efface la zone Zone.
 *  La zone est constituee des segments zones de meme TimeStamp
 */
{
    int           nb_segm = 0;
    bool          modify  = FALSE;

    SEGZONE* next;
    for( SEGZONE* zone = m_Pcb->m_Zone;   zone;   zone = next )
    {
        next = zone->Next();
        
        if( zone->m_TimeStamp == aZone->m_TimeStamp )
        {
            modify = TRUE;
            
            /* effacement des segments a l'ecran */
            Trace_Une_Piste( DrawPanel, DC, zone, nb_segm, GR_XOR );
            zone->DeleteStructure();
        }
    }

    if( modify )
    {
        GetScreen()->SetModify();
        GetScreen()->SetRefreshReq();
    }
}


/*****************************************************************************/
EDGE_ZONE* WinEDA_PcbFrame::Del_SegmEdgeZone( wxDC* DC, EDGE_ZONE* edge_zone )
/*****************************************************************************/
/* Routine d'effacement du segment de limite zone en cours de trace */
{
    EDGE_ZONE*  segm;

    if( m_Pcb->m_CurrentLimitZone )
        segm = m_Pcb->m_CurrentLimitZone;
    else
        segm = edge_zone;

    if( segm == NULL )
        return NULL;

    Trace_DrawSegmentPcb( DrawPanel, DC, segm, GR_XOR );

    m_Pcb->m_CurrentLimitZone = segm->Next();
    delete segm;

    segm = m_Pcb->m_CurrentLimitZone;
    SetCurItem( segm );

    if( segm )
    {
        segm->Pback = NULL;
        if( DrawPanel->ManageCurseur )
            DrawPanel->ManageCurseur( DrawPanel, DC, TRUE );
    }
    else
    {
        DrawPanel->ManageCurseur = NULL;
        DrawPanel->ForceCloseManageCurseur = NULL;
        SetCurItem( NULL );
    }
    return segm;
}


/*********************************************/
void WinEDA_PcbFrame::CaptureNetName( wxDC* DC )
/*********************************************/

/* routine permettant de capturer le nom net net (netcode) d'un pad
 *  ou d'une piste pour l'utiliser comme netcode de zone
 */
{
    D_PAD*  pt_pad = 0;
    TRACK*  adrpiste;
    MODULE* Module;
    int     masquelayer = g_TabOneLayerMask[GetScreen()->m_Active_Layer];
    int     netcode;

    netcode = -1;
    MsgPanel->EraseMsgBox();
    adrpiste = Locate_Pistes( m_Pcb->m_Track, masquelayer, CURSEUR_OFF_GRILLE );
    if( adrpiste == NULL )
    {
        pt_pad = Locate_Any_Pad( m_Pcb, CURSEUR_OFF_GRILLE );

        if( pt_pad )  /* Verif qu'il est bien sur la couche active */
        {
            Module = (MODULE*) pt_pad->m_Parent;
            pt_pad = Locate_Pads( Module, g_TabOneLayerMask[GetScreen()->m_Active_Layer],
                                  CURSEUR_OFF_GRILLE );
        }
        if( pt_pad )
        {
            pt_pad->Display_Infos( this );
            netcode = pt_pad->GetNet();
        }
    }
    else
    {
        adrpiste->Display_Infos( this );
        netcode = adrpiste->GetNet();
    }

    // Mise en surbrillance du net
    if( g_HightLigt_Status )
        Hight_Light( DC );

    g_HightLigth_NetCode = netcode;
    if( g_HightLigth_NetCode >= 0 )
    {
        Hight_Light( DC );
    }

    /* Affichage du net selectionne pour la zone a tracer */
    Display_Zone_Netname( this );
}


/*******************************************************/
static void Display_Zone_Netname( WinEDA_PcbFrame* frame )
/*******************************************************/

/*
 *  Affiche le net_code et le nom de net couramment selectionne
 */
{
    EQUIPOT* pt_equipot;
    wxString line;

    pt_equipot = frame->m_Pcb->m_Equipots;

    if( g_HightLigth_NetCode > 0 )
    {
        for( ; pt_equipot != NULL; pt_equipot = (EQUIPOT*) pt_equipot->Pnext )
        {
            if( pt_equipot->GetNet() == g_HightLigth_NetCode )
                break;
        }

        if( pt_equipot )
        {
            line.Printf( wxT( "Zone: Net[%d] <%s>" ), g_HightLigth_NetCode,
                        pt_equipot->m_Netname.GetData() );
        }
        else
            line.Printf( wxT( "Zone: NetCode[%d], Equipot not found" ),
                         g_HightLigth_NetCode );
    }

    line = _( "Zone: No net selected" );

    frame->Affiche_Message( line );
}


/********************************************************/
static void Exit_Zones( WinEDA_DrawPanel* Panel, wxDC* DC )
/********************************************************/

/**
 * Function Exit_Zones
 * cancels the Begin_Zone state if at least one EDGE_ZONE has been created.
 */
{
    WinEDA_PcbFrame* pcbframe = (WinEDA_PcbFrame*) Panel->m_Parent;

    if( pcbframe->m_Pcb->m_CurrentLimitZone )
    {
        if( Panel->ManageCurseur )  // trace in progress
        {
            Panel->ManageCurseur( Panel, DC, 0 );
        }
        pcbframe->DelLimitesZone( DC, FALSE );
    }

    Panel->ManageCurseur = NULL;
    Panel->ForceCloseManageCurseur = NULL;
    pcbframe->SetCurItem( NULL );
}


/**************************************************************/
void WinEDA_BasePcbFrame::DelLimitesZone( wxDC* DC, bool Redraw )
/**************************************************************/
{
    EDGE_ZONE*  segment;
    EDGE_ZONE*  next;

    if( m_Pcb->m_CurrentLimitZone == NULL )
        return;

    if( !IsOK( this, _( "Delete Current Zone Edges" ) ) )
        return;

    // erase the old zone border, one segment at a time
    for( segment = m_Pcb->m_CurrentLimitZone; segment; segment = next )
    {
        next = segment->Next();
        
        if( Redraw )
            Trace_DrawSegmentPcb( DrawPanel, DC, segment, GR_XOR );
        
        delete segment;
    }
    m_Pcb->m_CurrentLimitZone = NULL;

    SetCurItem( NULL );
}


/**
 * Function Begin_Zone
 * either initializes the first segment of a new zone, or adds an 
 * intermediate segment.
 */
EDGE_ZONE* WinEDA_PcbFrame::Begin_Zone()
{
    EDGE_ZONE* oldedge;
    EDGE_ZONE* newedge = NULL;

    oldedge = m_Pcb->m_CurrentLimitZone;

    // if first segment
    if( (m_Pcb->m_CurrentLimitZone == NULL )    /* debut reel du trace */
      || (DrawPanel->ManageCurseur == NULL) )  /* reprise d'un trace complementaire */
    {
        newedge = new EDGE_ZONE( m_Pcb );
        newedge->m_Flags = IS_NEW | STARTPOINT | IS_MOVED;
        newedge->m_Start = newedge->m_End = GetScreen()->m_Curseur;
        newedge->SetLayer( GetScreen()->m_Active_Layer );
        
        // link into list:
        newedge->Pnext   = oldedge;

        if( oldedge )
            oldedge->Pback = newedge;
        
        m_Pcb->m_CurrentLimitZone = newedge;
        
        DrawPanel->ManageCurseur  = Show_Zone_Edge_While_MoveMouse;
        DrawPanel->ForceCloseManageCurseur = Exit_Zones;
    }
    
    // edge in progress: 
    else    /* piste en cours : les coord du point d'arrivee ont ete mises
             *  a jour par la routine Show_Zone_Edge_While_MoveMouse*/
    {
        if( oldedge->m_Start != oldedge->m_End )
        {
            newedge = new EDGE_ZONE( oldedge );
            newedge->m_Flags = IS_NEW | IS_MOVED;
            newedge->m_Start = newedge->m_End = oldedge->m_End;
            newedge->SetLayer( GetScreen()->m_Active_Layer );
            
            // link into list:
            newedge->Pnext   = oldedge;
            oldedge->Pback   = newedge;
            m_Pcb->m_CurrentLimitZone = newedge;
        }
    }

    return newedge;
}


/*********************************************/
void WinEDA_PcbFrame::End_Zone( wxDC* DC )
/*********************************************/

/*
 *  Routine de fin de trace d'une zone (succession de segments)
 */
{
    EDGE_ZONE* edge;

    if( m_Pcb->m_CurrentLimitZone )
    {
        Begin_Zone();

        /* le dernier point genere est de longueur tj nulle donc inutile. */
        /* il sera raccorde au point de depart */
        edge = m_Pcb->m_CurrentLimitZone;
        edge->m_Flags &= ~(IS_NEW | IS_MOVED);
        
        while( edge && edge->Next() )
        {
            edge = edge->Next();
            if( edge->m_Flags & STARTPOINT )
                break;
            
            edge->m_Flags &= ~(IS_NEW | IS_MOVED);
        }

        if( edge )
        {
            edge->m_Flags &= ~(IS_NEW | IS_MOVED);
            m_Pcb->m_CurrentLimitZone->m_End = edge->m_Start;
        }
        Trace_DrawSegmentPcb( DrawPanel, DC, m_Pcb->m_CurrentLimitZone, GR_XOR );
    }

    DrawPanel->ManageCurseur = NULL;
    DrawPanel->ForceCloseManageCurseur = NULL;
}


/******************************************************************************************/
static void Show_Zone_Edge_While_MoveMouse( WinEDA_DrawPanel* panel, wxDC* DC, bool erase )
/******************************************************************************************/

/* redessin du contour de la piste  lors des deplacements de la souris
 */
{
    EDGE_ZONE*          edge;
    EDGE_ZONE*          currentEdge;
    WinEDA_PcbFrame*    pcbframe = (WinEDA_PcbFrame*) panel->m_Parent;

    if( pcbframe->m_Pcb->m_CurrentLimitZone == NULL )
        return;

    /* efface ancienne position si elle a ete deja dessinee */
    if( erase )
    {
        edge = pcbframe->m_Pcb->m_CurrentLimitZone;
        // for( ;  edge; edge = edge->Next() )
        {
            Trace_DrawSegmentPcb( panel, DC, edge, GR_XOR );
        }
    }

    /* mise a jour de la couche */
    for( edge = pcbframe->m_Pcb->m_CurrentLimitZone; edge; edge = edge->Next() )
    {
        edge->SetLayer( pcbframe->GetScreen()->m_Active_Layer );
    }

    /* dessin de la nouvelle piste : mise a jour du point d'arrivee */
    currentEdge = pcbframe->m_Pcb->m_CurrentLimitZone;
    if( Zone_45_Only )
    {
        // Calcul de l'extremite de la piste pour orientations permises:
        // horiz,vertical ou 45 degre
        currentEdge->m_End = pcbframe->GetScreen()->m_Curseur;
        Calcule_Coord_Extremite_45( currentEdge->m_Start.x, currentEdge->m_Start.y,
                                    &currentEdge->m_End.x, &currentEdge->m_End.y );
    }
    else    /* ici l'angle d'inclinaison est quelconque */
    {
        currentEdge->m_End = pcbframe->GetScreen()->m_Curseur;
    }

    // for( ; currentEdge;  currentEdge = currentEdge->Next() )
    {
        Trace_DrawSegmentPcb( panel, DC, currentEdge, GR_XOR );
    }
}


/**********************************************/
void WinEDA_PcbFrame::Fill_Zone( wxDC* DC )
/**********************************************/

/** Function Fill_Zone()
 *  Init the zone filling
 *  If a zone edge is found, it is used. 
 *  Otherwise the whole board is filled by the zone
 *  The zone edge is a frontier, and can be complex. So non filled zones can be achieved
 *  The zone is put on the active layer
 *  If a net is hightlighted, the zone will be attached to this net
 *  The filling start from a starting point.
 *  If a net is selected, all tracks attached to this net are also starting points 
 */
{
    int        ii, jj;
    EDGE_ZONE* PtLim;
    int        lp_tmp, lay_tmp_TOP, lay_tmp_BOTTOM;
    EQUIPOT*   pt_equipot;
    int        save_isol = g_DesignSettings.m_TrackClearence;
    wxPoint    ZoneStartFill;
    wxString   msg;

    MsgPanel->EraseMsgBox();
    if( m_Pcb->ComputeBoundaryBox() == FALSE )
    {
        DisplayError( this, wxT( "Board is empty!" ), 10 );
        return;
    }
    
    DrawPanel->m_IgnoreMouseEvents = TRUE;
    WinEDA_ZoneFrame* frame = new WinEDA_ZoneFrame( this );
    
    ii = frame->ShowModal(); 
    frame->Destroy();
    DrawPanel->MouseToCursorSchema();
    DrawPanel->m_IgnoreMouseEvents = FALSE;
    
    if( ii )
        return;

    g_DesignSettings.m_TrackClearence = g_DesignSettings.m_ZoneClearence;

    // set all the EDGE_ZONEs to the currently active layer and redraw them
    // on that layer.
    PtLim = m_Pcb->m_CurrentLimitZone;
    for( ; PtLim != NULL; PtLim = PtLim->Next() )
    {
        Trace_DrawSegmentPcb( DrawPanel, DC, PtLim, GR_XOR );
        PtLim->SetLayer( GetScreen()->m_Active_Layer );
        Trace_DrawSegmentPcb( DrawPanel, DC, PtLim, GR_XOR );
    }

    s_TimeStamp = time( NULL );

    // calculate the fixed step of the routing matrix as 5 mils or more
    E_scale = g_GridRoutingSize / 50; 
    
    if( g_GridRoutingSize < 1 )
        g_GridRoutingSize = 1;

    // calculate the Ncols and Nrows, size of the routing matrix
    ComputeMatriceSize( this, g_GridRoutingSize );

    // Determine the cell pointed to by the mouse
    ZoneStartFill.x = ( GetScreen()->m_Curseur.x - m_Pcb->m_BoundaryBox.m_Pos.x +
                       (g_GridRoutingSize / 2) ) / g_GridRoutingSize;
    
    ZoneStartFill.y = ( GetScreen()->m_Curseur.y - m_Pcb->m_BoundaryBox.m_Pos.y +
                       (g_GridRoutingSize / 2) ) / g_GridRoutingSize;
    
    if( ZoneStartFill.x < 0 )
        ZoneStartFill.x = 0;
    
    if( ZoneStartFill.x >= Ncols )
        ZoneStartFill.x = Ncols - 1;
    
    if( ZoneStartFill.y < 0 )
        ZoneStartFill.y = 0;
    
    if( ZoneStartFill.y >= Nrows )
        ZoneStartFill.y = Nrows - 1;

    // create the routing matrix in autorout.h's eda_global BOARDHEAD Board
    Nb_Sides = ONE_SIDE;
    if( Board.InitBoard() < 0 )
    {
        DisplayError( this, wxT( "Mo memory for creating zones" ) );
        return;
    }

    msg.Printf( wxT( "%d" ), Ncols );
    Affiche_1_Parametre( this, 1, wxT( "Cols" ), msg, GREEN );
    
    msg.Printf( wxT( "%d" ), Nrows );
    Affiche_1_Parametre( this, 7, wxT( "Lines" ), msg, GREEN );
    
    msg.Printf( wxT( "%d" ), Board.m_MemSize / 1024 );
    Affiche_1_Parametre( this, 14, wxT( "Mem(Ko)" ), msg, CYAN );

    lay_tmp_BOTTOM = Route_Layer_BOTTOM;
    lay_tmp_TOP    = Route_Layer_TOP;

    Route_Layer_BOTTOM = Route_Layer_TOP = GetScreen()->m_Active_Layer;
    lp_tmp = g_DesignSettings.m_CurrentTrackWidth;
    g_DesignSettings.m_CurrentTrackWidth = g_GridRoutingSize;

    /* Shos the NetName */
    if( g_HightLigth_NetCode > 0 )
    {
        pt_equipot = m_Pcb->FindNet( g_HightLigth_NetCode );
        if( pt_equipot == NULL )
        {
            if( g_HightLigth_NetCode > 0 )
                DisplayError( this, wxT( "Unable to find Net name" ) );
        }
        else
            msg = pt_equipot->m_Netname;
    }
    else
        msg = _( "No Net" );

    Affiche_1_Parametre( this, 22, _( "NetName" ), msg, RED );

    /* Create the starting point for thz zone:
     * The starting point and all the tracks are suitable "starting points" */
    TRACK* pt_segm = m_Pcb->m_Track;
    for( ; pt_segm != NULL; pt_segm = pt_segm->Next() )
    {
        if( g_HightLigth_NetCode != pt_segm->GetNet() )
            continue;
        
        if( pt_segm->GetLayer() != GetScreen()->m_Active_Layer )
            continue;
        
        if( pt_segm->Type() != TYPETRACK )
            continue;
        
        TraceSegmentPcb( m_Pcb, pt_segm, CELL_is_FRIEND, 0, WRITE_CELL );
    }

    // trace the pcb edges (pcb contour) into the routing matrix
    Route_Layer_BOTTOM = Route_Layer_TOP = EDGE_N;
    PlaceCells( m_Pcb, -1, 0 );
    Route_Layer_BOTTOM = Route_Layer_TOP = GetScreen()->m_Active_Layer;

    // trace the zone edges into the routing matrix
    for( PtLim = m_Pcb->m_CurrentLimitZone; PtLim; PtLim=PtLim->Next() )
    {
        int ux0, uy0, ux1, uy1;
        ux0 = PtLim->m_Start.x - m_Pcb->m_BoundaryBox.m_Pos.x;
        uy0 = PtLim->m_Start.y - m_Pcb->m_BoundaryBox.m_Pos.y;
        ux1 = PtLim->m_End.x - m_Pcb->m_BoundaryBox.m_Pos.x;
        uy1 = PtLim->m_End.y - m_Pcb->m_BoundaryBox.m_Pos.y;
        TraceLignePcb( ux0, uy0, ux1, uy1, -1, HOLE | CELL_is_EDGE, WRITE_CELL );
    }

    OrCell( ZoneStartFill.y, ZoneStartFill.x, BOTTOM, CELL_is_ZONE );

    // mark the cells forming part of the zone
    ii = 1; jj = 1;
    while( ii )
    {
        msg.Printf( wxT( "%d" ), jj++ );
        Affiche_1_Parametre( this, 50, wxT( "Iter." ), msg, CYAN );
        ii = Propagation( this );
    }

    // selection of the suitable cells for the points of anchoring of the zone
    for( ii = 0; ii < Nrows; ii++ )
    {
        for( jj = 0; jj < Ncols; jj++ )
        {
            long cell = GetCell( ii, jj, BOTTOM );
            if( (cell & CELL_is_ZONE) )
            {
                if( (cell & CELL_is_FRIEND) == 0 )
                    AndCell( ii, jj, BOTTOM, (BoardCell) ~(CELL_is_FRIEND | CELL_is_ZONE) );
            }
        }
    }

    // now, all the cell candidates are marked

    // place all the obstacles into the matrix, such as (pads, tracks, vias, 
    // pcb edges or segments)
    ii = 0;
    if( Zone_Exclude_Pads )
        ii = FORCE_PADS;

    Affiche_1_Parametre( this, 42, wxT( "GenZone" ), wxEmptyString, RED );
    PlaceCells( m_Pcb, g_HightLigth_NetCode, ii );
    Affiche_1_Parametre( this, -1, wxEmptyString, _( "Ok" ), RED );

    /* Create zone limits on the routing matrix
     *  (colud be deleted by PlaceCells()) : */
    for( PtLim = m_Pcb->m_CurrentLimitZone; PtLim; PtLim = PtLim->Next() )
    {
        int ux0, uy0, ux1, uy1;
        ux0 = PtLim->m_Start.x - m_Pcb->m_BoundaryBox.m_Pos.x;
        uy0 = PtLim->m_Start.y - m_Pcb->m_BoundaryBox.m_Pos.y;
        ux1 = PtLim->m_End.x - m_Pcb->m_BoundaryBox.m_Pos.x;
        uy1 = PtLim->m_End.y - m_Pcb->m_BoundaryBox.m_Pos.y;
        TraceLignePcb( ux0, uy0, ux1, uy1, -1, HOLE | CELL_is_EDGE, WRITE_CELL );
    }

    /* Init the starting point for zone filling : this is the mouse position
     *  (could be deleted by PlaceCells()) : */
    OrCell( ZoneStartFill.y, ZoneStartFill.x, BOTTOM, CELL_is_ZONE );

    if( Zone_Debug )
        DisplayBoard( DrawPanel, DC );

    /* Filling the cells of the matrix (tjis is the zone building)*/
    ii = 1; jj = 1;
    while( ii )
    {
        msg.Printf( wxT( "%d" ), jj++ );
        Affiche_1_Parametre( this, 50, wxT( "Iter." ), msg, CYAN );
        ii = Propagation( this );
    }

    if( Zone_Debug )
        DisplayBoard( DrawPanel, DC );

    /* Convert the matrix information (cells) to segments which are actually the zone */
    if( g_HightLigth_NetCode < 0 )
        Genere_Segments_Zone( this, DC, 0 );
    else
        Genere_Segments_Zone( this, DC, g_HightLigth_NetCode );

    /* Create the thermal reliefs */
    g_DesignSettings.m_CurrentTrackWidth = lp_tmp;
    if( Zone_Exclude_Pads && s_Zone_Create_Thermal_Relief )
        Genere_Pad_Connexion( this, DC, GetScreen()->m_Active_Layer );

    g_DesignSettings.m_TrackClearence = save_isol;

    GetScreen()->SetModify();

    // free the memory
    Board.UnInitBoard();

    // restore original values unchanged
    Route_Layer_TOP    = lay_tmp_TOP;
    Route_Layer_BOTTOM = lay_tmp_BOTTOM;
}


/*******************************************************************************/
static void Genere_Segments_Zone( WinEDA_PcbFrame* frame, wxDC* DC, int net_code )
/*******************************************************************************/

/** Function Genere_Segments_Zone()
  * Create the zone segments from the routing matrix structure
 *  Algorithm:
 * Search for consecutive cells (flagged "zone") , and create segments
*  from the first cell to the last cell in the matrix
 *      2 searchs are made
 *          1 - From left to right and create horizontal zone segments 
 *          2 - From top to bottom, and create vertical zone segm<EFBFBD>ents
 * @param net_code = net_code common to all segment zone created
 * @param DC = current device context
 * @param frame = current WinEDA_PcbFrame
 * global: parameter TimeStamp: time stamp common to all segment zone created
 */
{
    int      row, col;
    long     current_cell, old_cell;
    int      ux0  = 0, uy0 = 0, ux1 = 0, uy1 = 0;
    int      Xmin = frame->m_Pcb->m_BoundaryBox.m_Pos.x;
    int      Ymin = frame->m_Pcb->m_BoundaryBox.m_Pos.y;
    SEGZONE* pt_track;
    int      layer  = frame->GetScreen()->m_Active_Layer;
    int      nbsegm = 0;
    wxString msg;

    /* balayage Gauche-> droite */
    Affiche_1_Parametre( frame, 64, wxT( "Segm H" ), wxT( "0" ), BROWN );
    for( row = 0; row < Nrows; row++ )
    {
        old_cell = 0;
        uy0 = uy1 = (row * g_GridRoutingSize) + Ymin;
        for( col = 0; col < Ncols; col++ )
        {
            current_cell = GetCell( row, col, BOTTOM ) & CELL_is_ZONE;
            if( current_cell ) /* ce point doit faire partie d'un segment */
            {
                ux1 = (col * g_GridRoutingSize) + Xmin;
                if( old_cell == 0 )
                    ux0 = ux1;
            }

            if( !current_cell || (col == Ncols - 1) ) /* peut etre fin d'un segment */
            {
                if( (old_cell) && (ux0 != ux1) )
                {
                    /* un segment avait debute de longueur > 0 */
                    pt_track = new SEGZONE( frame->m_Pcb );
                    pt_track->SetLayer( layer );
                    pt_track->SetNet( net_code );
                    
                    pt_track->m_Width     = g_GridRoutingSize;
                    
                    pt_track->m_Start.x   = ux0; 
                    pt_track->m_Start.y   = uy0;
                    
                    pt_track->m_End.x     = ux1; 
                    pt_track->m_End.y     = uy1;
                    
                    pt_track->m_TimeStamp = s_TimeStamp;
                    
                    pt_track->Insert( frame->m_Pcb, NULL );
                    pt_track->Draw( frame->DrawPanel, DC, GR_OR );
                    nbsegm++;
                }
            }
            old_cell = current_cell;
        }

        msg.Printf( wxT( "%d" ), nbsegm );
        Affiche_1_Parametre( frame, -1, wxEmptyString, msg, BROWN );
    }

    Affiche_1_Parametre( frame, 72, wxT( "Segm V" ), wxT( "0" ), BROWN );
    for( col = 0; col < Ncols; col++ )
    {
        old_cell = 0;
        ux0 = ux1 = (col * g_GridRoutingSize) + Xmin;
        for( row = 0; row < Nrows; row++ )
        {
            current_cell = GetCell( row, col, BOTTOM ) & CELL_is_ZONE;
            if( current_cell ) /* ce point doit faire partie d'un segment */
            {
                uy1 = (row * g_GridRoutingSize) + Ymin;
                if( old_cell == 0 )
                    uy0 = uy1;
            }
            if( !current_cell || (row == Nrows - 1) )    /* peut etre fin d'un segment */
            {
                if( (old_cell) && (uy0 != uy1) )
                {
                    /* un segment avait debute de longueur > 0 */
                    pt_track = new SEGZONE( frame->m_Pcb );
                    pt_track->SetLayer( layer );
                    pt_track->m_Width     = g_GridRoutingSize;
                    pt_track->SetNet( net_code );
                    
                    pt_track->m_Start.x   = ux0; 
                    pt_track->m_Start.y   = uy0;
                    
                    pt_track->m_End.x     = ux1; 
                    pt_track->m_End.y     = uy1;
                    
                    pt_track->m_TimeStamp = s_TimeStamp;
                    pt_track->Insert( frame->m_Pcb, NULL );
                    pt_track->Draw( frame->DrawPanel, DC, GR_OR );
                    nbsegm++;
                }
            }
            old_cell = current_cell;
        }

        msg.Printf( wxT( "%d" ), nbsegm );
        Affiche_1_Parametre( frame, -1, wxEmptyString, msg, BROWN );
    }
}


/********************************************/
int Propagation( WinEDA_PcbFrame* frame )
/********************************************/

/** Function Propagation()
 * An important function to calculate zones
 * Uses the routing matrix to fill the cells within the zone
 * Search and mark cells within the zone, and agree with DRC options.
 * Requirements:
 * Start from an initial point, to fill zone
 * The zone must have no "copper island"
 *  Algorithm:
 *  If the current cell has a neightbour flagged as "cell in the zone", it
 *  become a cell in the zone
 *  The first point in the zone is the starting point
 *  4 searches within the matrix are made:
 *          1 - Left to right and top to bottom
 *          2 - Right to left and top to bottom
 *          3 - bottom to top and Right to left
 *          4 - bottom to top and Left to right
 *  Given the current cell, for each search, we consider the 2 neightbour cells 
 *  the previous cell on the same line and the previous cell on the same column.
 *
 *  This funtion can request some iterations
 *  Iterations are made until no cell is added to the zone.
 *  @return: added cells count (i.e. which the attribute CELL_is_ZONE is set)
 */
{
    int       row, col, nn;
    long      current_cell, old_cell_H;
    int long* pt_cell_V;
    int       nbpoints = 0;

#define NO_CELL_ZONE (HOLE | CELL_is_EDGE | CELL_is_ZONE)
    wxString  msg;

    Affiche_1_Parametre( frame, 57, wxT( "Detect" ), msg, CYAN );
    Affiche_1_Parametre( frame, -1, wxEmptyString, wxT( "1" ), CYAN );

    // Alloc memory to handle 1 line or 1 colunmn on the routing matrix
    nn = MAX( Nrows, Ncols ) * sizeof(*pt_cell_V);
    pt_cell_V = (long*) MyMalloc( nn );

    /* search 1 : from left to right and top to bottom */
    memset( pt_cell_V, 0, nn );
    for( row = 0; row < Nrows; row++ )
    {
        old_cell_H = 0;
        for( col = 0; col < Ncols; col++ )
        {
            current_cell = GetCell( row, col, BOTTOM ) & NO_CELL_ZONE;
            if( current_cell == 0 )  /* a free cell is found */
            {
                if( (old_cell_H & CELL_is_ZONE)
                   || (pt_cell_V[col] & CELL_is_ZONE) )
                {
                    OrCell( row, col, BOTTOM, CELL_is_ZONE );
                    current_cell = CELL_is_ZONE;
                    nbpoints++;
                }
            }
            pt_cell_V[col] = old_cell_H = current_cell;
        }
    }

    /* search 2 : from right to left and top to bottom */
    Affiche_1_Parametre( frame, -1, wxEmptyString, wxT( "2" ), CYAN );
    memset( pt_cell_V, 0, nn );
    for( row = 0; row < Nrows; row++ )
    {
        old_cell_H = 0;
        for( col = Ncols - 1; col >= 0; col-- )
        {
            current_cell = GetCell( row, col, BOTTOM ) & NO_CELL_ZONE;
            if( current_cell == 0 )  /* a free cell is found */
            {
                if( (old_cell_H & CELL_is_ZONE)
                   || (pt_cell_V[col] & CELL_is_ZONE) )
                {
                    OrCell( row, col, BOTTOM, CELL_is_ZONE );
                    current_cell = CELL_is_ZONE;
                    nbpoints++;
                }
            }
            pt_cell_V[col] = old_cell_H = current_cell;
        }
    }

    /* search 3 : from bottom to top and right to left balayage */
    Affiche_1_Parametre( frame, -1, wxEmptyString, wxT( "3" ), CYAN );
    memset( pt_cell_V, 0, nn );
    for( col = Ncols - 1; col >= 0; col-- )
    {
        old_cell_H = 0;
        for( row = Nrows - 1; row >= 0; row-- )
        {
            current_cell = GetCell( row, col, BOTTOM ) & NO_CELL_ZONE;
            if( current_cell == 0 )  /* a free cell is found */
            {
                if( (old_cell_H & CELL_is_ZONE)
                   || (pt_cell_V[row] & CELL_is_ZONE) )
                {
                    OrCell( row, col, BOTTOM, CELL_is_ZONE );
                    current_cell = CELL_is_ZONE;
                    nbpoints++;
                }
            }
            pt_cell_V[row] = old_cell_H = current_cell;
        }
    }

    /* search 4 : from bottom to top and left to right */
    Affiche_1_Parametre( frame, -1, wxEmptyString, wxT( "4" ), CYAN );
    memset( pt_cell_V, 0, nn );
    for( col = 0; col < Ncols; col++ )
    {
        old_cell_H = 0;
        for( row = Nrows - 1; row >= 0; row-- )
        {
            current_cell = GetCell( row, col, BOTTOM ) & NO_CELL_ZONE;
            if( current_cell == 0 )  /* a free cell is found */
            {
                if( (old_cell_H & CELL_is_ZONE)
                 || (pt_cell_V[row] & CELL_is_ZONE) )
                {
                    OrCell( row, col, BOTTOM, CELL_is_ZONE );
                    current_cell = CELL_is_ZONE;
                    nbpoints++;
                }
            }
            pt_cell_V[row] = old_cell_H = current_cell;
        }
    }

    MyFree( pt_cell_V );

    return nbpoints;
}


/*****************************************************************************/
static bool Genere_Pad_Connexion( WinEDA_PcbFrame* frame, wxDC* DC, int layer )
/*****************************************************************************/

/* Create the thermal relief for each pad in the zone:
 *  this is 4 small segments from the pad to the zone
 */
{
    int        ii, jj, Npads;
    D_PAD*     pt_pad;
    LISTE_PAD* pt_liste_pad;
    TRACK*     pt_track, * loctrack;
    int        angle;
    int        cX, cY, dx, dy;
    int        sommet[4][2];
    wxString   msg;

    if( frame->m_Pcb->m_Zone == NULL )
        return FALSE;                                       /* error: no zone */
    
    if( frame->m_Pcb->m_Zone->m_TimeStamp != s_TimeStamp )  /* error: this is not the new zone */
        return FALSE;

    /* Count the pads, i.e. the thermal relief to create count, and displays it */
    Affiche_1_Parametre( frame, 50, wxT( "NPads" ), wxT( "    " ), CYAN );
    pt_liste_pad = (LISTE_PAD*) frame->m_Pcb->m_Pads;
    for( ii = 0, Npads = 0; ii < frame->m_Pcb->m_NbPads; ii++, pt_liste_pad++ )
    {
        pt_pad = *pt_liste_pad;

        /* Search pads relative to the selected net code */
        if( pt_pad->GetNet() != g_HightLigth_NetCode )
            continue;

        /* Is the pad on the active layer ? */
        if( (pt_pad->m_Masque_Layer & g_TabOneLayerMask[layer]) == 0 )
            continue;
        Npads++;
    }

    msg.Printf( wxT( "%d" ), Npads );
    Affiche_1_Parametre( frame, -1, wxEmptyString, msg, CYAN );

	/* Create the thermal reliefs */
    Affiche_1_Parametre( frame, 57, wxT( "Pads" ), wxT( "     " ), CYAN );
    pt_liste_pad = (LISTE_PAD*) frame->m_Pcb->m_Pads;
    for( ii = 0, Npads = 0; ii < frame->m_Pcb->m_NbPads; ii++, pt_liste_pad++ )
    {
        pt_pad = *pt_liste_pad;

        /* Search pads relative to the selected net code */
        if( pt_pad->GetNet() != g_HightLigth_NetCode )
            continue;
        /* Is the pad on the active layer ? */
        if( (pt_pad->m_Masque_Layer & g_TabOneLayerMask[layer]) == 0 )
            continue;

        /* Create the theram relief for the current pad */
        Npads++; msg.Printf( wxT( "%d" ), Npads );
        Affiche_1_Parametre( frame, -1, wxEmptyString, msg, CYAN );
        cX  = pt_pad->m_Pos.x;   cY = pt_pad->m_Pos.y;
        dx  = pt_pad->m_Size.x / 2;
        dy  = pt_pad->m_Size.y / 2;
        dx += g_DesignSettings.m_TrackClearence + g_GridRoutingSize;
        dy += g_DesignSettings.m_TrackClearence + g_GridRoutingSize;

        if( pt_pad->m_PadShape == TRAPEZE )
        {
            dx += abs( pt_pad->m_DeltaSize.y ) / 2;
            dy += abs( pt_pad->m_DeltaSize.x ) / 2;
        }

        /* calculate the 4 segment coordintes (starting from the pad centre cX,cY) */
        sommet[0][0] = 0; sommet[0][1] = -dy;
        sommet[1][0] = -dx; sommet[1][1] = 0;
        sommet[2][0] = 0; sommet[2][1] = dy;
        sommet[3][0] = dx; sommet[3][1] = 0;

        angle = pt_pad->m_Orient;
        for( jj = 0; jj < 4; jj++ )
        {
            RotatePoint( &sommet[jj][0], &sommet[jj][1], angle );

            pt_track = new SEGZONE( frame->m_Pcb );

            pt_track->SetLayer( layer );
            pt_track->m_Width   = g_DesignSettings.m_CurrentTrackWidth;
            pt_track->SetNet( g_HightLigth_NetCode );
            pt_track->start       = pt_pad;
            pt_track->m_Start.x   = cX; pt_track->m_Start.y = cY;
            pt_track->m_End.x     = cX + sommet[jj][0];
            pt_track->m_End.y     = cY + sommet[jj][1];
            pt_track->m_TimeStamp = s_TimeStamp;

            /* Test if the segment is allowed */
            if( Drc( frame, DC, pt_track, frame->m_Pcb->m_Track, 0 ) == BAD_DRC )
            {
                delete pt_track; continue;
            }

            /* Search for a zone segment */
            loctrack = Locate_Zone( frame->m_Pcb->m_Zone, pt_track->m_End, layer );
            if( (loctrack == NULL) || (loctrack->m_TimeStamp != s_TimeStamp) )
            {
                delete pt_track; continue;
            }

            pt_track->Insert( frame->m_Pcb, NULL );
            pt_track->Draw( frame->DrawPanel, DC, GR_OR );
        }
    }

    return TRUE;
}