kicad/pcbnew/muonde.cpp

/*******************************************/
/* mounde.cpp - Microwave pcb layout code. */
/*******************************************/

#include "fctsys.h"
#include "common.h"
#include "class_drawpanel.h"
#include "confirm.h"
#include "trigo.h"
#include "kicad_string.h"
#include "gestfich.h"
#include "pcbnew.h"
#include "wxPcbStruct.h"
#include "class_board_design_settings.h"
#include "protos.h"
#include "dialog_helpers.h"
#include "richio.h"
#include "filter_reader.h"

#define COEFF_COUNT 6
static double* PolyEdges;
static int     PolyEdgesCount;
static double  ShapeScaleX, ShapeScaleY;
static wxSize  ShapeSize;
static int     PolyShapeType;


static void Exit_Self( EDA_DRAW_PANEL* Panel, wxDC* DC );
static void gen_arc( std::vector <wxPoint>& aBuffer,
                     wxPoint                aStartPoint,
                     wxPoint                aCenter,
                     int                    a_ArcAngle );
static void ShowBoundingBoxMicroWaveInductor( EDA_DRAW_PANEL* apanel,
                                              wxDC*           aDC,
                                              const wxPoint&  aPosition,
                                              bool            aErase );


int         BuildCornersList_S_Shape( std::vector <wxPoint>& aBuffer,
                                      wxPoint aStartPoint, wxPoint aEndPoint,
                                      int aLength, int aWidth );

class SELFPCB
{
public:
    int     forme;          // Shape: coil, spiral, etc ..
    wxPoint m_Start;
    wxPoint m_End;
    wxSize  m_Size;
    int     lng;                        // Trace length.
    int     m_Width;                    // Trace width.
};

static SELFPCB Mself;
static int     Self_On;


/* This function shows on screen the bounding box of the inductor that will be
 * created at the end of the build inductor process
 */
static void ShowBoundingBoxMicroWaveInductor( EDA_DRAW_PANEL* aPanel, wxDC* aDC,
                                              const wxPoint& aPosition, bool aErase )
{
    /* Calculate the orientation and size of the box containing the inductor:
     * the box is a rectangle with height = lenght/2
     * the shape is defined by a rectangle, nor necessary horizontal or vertical
     */
    GRSetDrawMode( aDC, GR_XOR );

    wxPoint poly[5];
    wxPoint pt    = Mself.m_End - Mself.m_Start;
    int     angle = -wxRound( atan2( (double) pt.y, (double) pt.x ) * 1800.0 / M_PI );
    int     len   = wxRound( sqrt( (double) pt.x * pt.x + (double) pt.y * pt.y ) );

    // calculate corners
    pt.x = 0; pt.y = len / 4;
    RotatePoint( &pt, angle );
    poly[0] = Mself.m_Start + pt;
    poly[1] = Mself.m_End + pt;
    pt.x    = 0; pt.y = -len / 4;
    RotatePoint( &pt, angle );
    poly[2] = Mself.m_End + pt;
    poly[3] = Mself.m_Start + pt;
    poly[4] = poly[0];

    if( aErase )
    {
        GRPoly( &aPanel->m_ClipBox, aDC, 5, poly, false, 0, YELLOW, YELLOW );
    }

    Mself.m_End = aPanel->GetScreen()->GetCrossHairPosition();
    pt    = Mself.m_End - Mself.m_Start;
    angle = -wxRound( atan2( (double) pt.y, (double) pt.x ) * 1800.0 / M_PI );
    len   = wxRound( sqrt( (double) pt.x * pt.x + (double) pt.y * pt.y ) );

    // calculate new corners
    pt.x = 0; pt.y = len / 4;
    RotatePoint( &pt, angle );
    poly[0] = Mself.m_Start + pt;
    poly[1] = Mself.m_End + pt;
    pt.x    = 0; pt.y = -len / 4;
    RotatePoint( &pt, angle );
    poly[2] = Mself.m_End + pt;
    poly[3] = Mself.m_Start + pt;
    poly[4] = poly[0];

    GRPoly( &aPanel->m_ClipBox, aDC, 5, poly, false, 0, YELLOW, YELLOW );
}


void Exit_Self( EDA_DRAW_PANEL* Panel, wxDC* DC )
{
    if( Self_On )
    {
        Self_On = 0;
        Panel->m_mouseCaptureCallback( Panel, DC, wxDefaultPosition, 0 );
    }
}


void PCB_EDIT_FRAME::Begin_Self( wxDC* DC )
{
    if( Self_On )
    {
        Genere_Self( DC );
        return;
    }

    Mself.m_Start = GetScreen()->GetCrossHairPosition();
    Mself.m_End   = Mself.m_Start;

    Self_On = 1;

    /* Update the initial coordinates. */
    GetScreen()->m_O_Curseur = GetScreen()->GetCrossHairPosition();
    UpdateStatusBar();

    DrawPanel->SetMouseCapture( ShowBoundingBoxMicroWaveInductor, Exit_Self );
    DrawPanel->m_mouseCaptureCallback( DrawPanel, DC, wxDefaultPosition, false );
}


/* Create a self-shaped coil
 * - Length Mself.lng
 * - Extremities Mself.m_Start and Mself.m_End
 *
 * We must determine:
 * Mself.nbrin = number of segments perpendicular to the direction
 * (The coil nbrin will demicercles + 1 + 2 1 / 4 circle)
 * Mself.lbrin = length of a strand
 * Mself.radius = radius of rounded parts of the coil
 * Mself.delta = segments extremities connection between him and the coil even
 *
 * The equations are
 * Mself.m_Size.x = 2 * Mself.radius + Mself.lbrin
 * Mself.m_Size.y * Mself.delta = 2 + 2 * Mself.nbrin * Mself.radius
 * Mself.lng = 2 * Mself.delta / / connections to the coil
 + (Mself.nbrin-2) * Mself.lbrin / / length of the strands except 1st and last
 + (Mself.nbrin 1) * (PI * Mself.radius) / / length of rounded
 * Mself.lbrin + / 2 - Melf.radius * 2) / / length of 1st and last bit
 *
 * The constraints are:
 * Nbrin >= 2
 * Mself.radius < Mself.m_Size.x
 * Mself.m_Size.y = Mself.radius * 4 + 2 * Mself.raccord
 * Mself.lbrin> Mself.radius * 2
 *
 * The calculation is conducted in the following way:
 * Initially:
 * Nbrin = 2
 * Radius = 4 * m_Size.x (arbitrarily fixed value)
 * Then:
 * Increasing the number of segments to the desired length
 * (Radius decreases if necessary)
 *
 */
MODULE* PCB_EDIT_FRAME::Genere_Self( wxDC* DC )
{
    D_PAD*   PtPad;
    int      ll;
    wxString msg;

    DrawPanel->m_mouseCaptureCallback( DrawPanel, DC, wxDefaultPosition, false );
    DrawPanel->SetMouseCapture( NULL, NULL );

    if( Self_On == 0 )
    {
        DisplayError( this, wxT( "Starting point not init.." ) );
        return NULL;
    }

    Self_On = 0;

    Mself.m_End = GetScreen()->GetCrossHairPosition();

    wxPoint pt = Mself.m_End - Mself.m_Start;
    int     min_len = wxRound( sqrt( (double) pt.x * pt.x + (double) pt.y * pt.y ) );
    Mself.lng = min_len;

    /* Enter the desired length. */
    msg = ReturnStringFromValue( g_UserUnit, Mself.lng, GetScreen()->GetInternalUnits() );
    wxTextEntryDialog dlg( this, _( "Length:" ), _( "Length" ), msg );
    if( dlg.ShowModal() != wxID_OK )
        return NULL; // cancelled by user

    msg = dlg.GetValue();
    Mself.lng = ReturnValueFromString( g_UserUnit, msg, GetScreen()->GetInternalUnits() );

    /* Control values (ii = minimum length) */
    if( Mself.lng < min_len )
    {
        DisplayError( this, _( "Requested length < minimum length" ) );
        return NULL;
    }

    /* Calculate the elements. */
    Mself.m_Width = GetBoard()->GetCurrentTrackWidth();

    std::vector <wxPoint> buffer;
    ll = BuildCornersList_S_Shape( buffer, Mself.m_Start, Mself.m_End,
                                   Mself.lng, Mself.m_Width );
    if( !ll )
    {
        DisplayError( this, _( "Requested length too large" ) );
        return NULL;
    }


    /* Generate module. */
    MODULE* Module;
    Module = Create_1_Module( wxEmptyString );
    if( Module == NULL )
        return NULL;

    // here the Module is already in the BOARD, Create_1_Module() does that.
    Module->m_LibRef    = wxT( "MuSelf" );
    Module->m_Attributs = MOD_VIRTUAL | MOD_CMS;
    Module->m_Flags     = 0;
    Module->m_Pos = Mself.m_End;

    /* Generate segments. */
    for( unsigned jj = 1; jj < buffer.size(); jj++ )
    {
        EDGE_MODULE* PtSegm;
        PtSegm = new EDGE_MODULE( Module );
        PtSegm->m_Start = buffer[jj - 1];
        PtSegm->m_End   = buffer[jj];
        PtSegm->m_Width = Mself.m_Width;
        PtSegm->SetLayer( Module->GetLayer() );
        PtSegm->m_Shape  = S_SEGMENT;
        PtSegm->m_Start0 = PtSegm->m_Start - Module->m_Pos;
        PtSegm->m_End0   = PtSegm->m_End - Module->m_Pos;
        Module->m_Drawings.PushBack( PtSegm );
    }

    /* Place a pad on each end of coil. */
    PtPad = new D_PAD( Module );

    Module->m_Pads.PushFront( PtPad );

    PtPad->SetPadName( wxT( "1" ) );
    PtPad->m_Pos    = Mself.m_End;
    PtPad->m_Pos0   = PtPad->m_Pos - Module->m_Pos;
    PtPad->m_Size.x = PtPad->m_Size.y = Mself.m_Width;
    PtPad->m_Masque_Layer = g_TabOneLayerMask[Module->GetLayer()];
    PtPad->m_Attribut     = PAD_SMD;
    PtPad->m_PadShape     = PAD_CIRCLE;
    PtPad->ComputeShapeMaxRadius();

    D_PAD* newpad = new D_PAD( Module );
    newpad->Copy( PtPad );

    Module->m_Pads.Insert( newpad, PtPad->Next() );

    PtPad = newpad;
    PtPad->SetPadName( wxT( "2" ) );
    PtPad->m_Pos  = Mself.m_Start;
    PtPad->m_Pos0 = PtPad->m_Pos - Module->m_Pos;

    /* Modify text positions. */
    Module->DisplayInfo( this );
    Module->m_Value->m_Pos.x = Module->m_Reference->m_Pos.x =
                                   ( Mself.m_Start.x + Mself.m_End.x ) / 2;
    Module->m_Value->m_Pos.y = Module->m_Reference->m_Pos.y =
                                   ( Mself.m_Start.y + Mself.m_End.y ) / 2;

    Module->m_Reference->m_Pos.y -= Module->m_Reference->m_Size.y;
    Module->m_Value->m_Pos.y     += Module->m_Value->m_Size.y;
    Module->m_Reference->m_Pos0   = Module->m_Reference->m_Pos - Module->m_Pos;
    Module->m_Value->m_Pos0 = Module->m_Value->m_Pos - Module->m_Pos;


    Module->Set_Rectangle_Encadrement();
    Module->Draw( DrawPanel, DC, GR_OR );

    return Module;
}


/** gen_arc
 * Generate an arc using arc approximation by lines:
 * Center aCenter
 * Angle "angle" (in 0.1 deg)
 * @param  aBuffer = a buffer to store points.
 * @param  aStartPoint = starting point of arc.
 * @param  aCenter = arc centre.
 * @param  a_ArcAngle = arc length in 0.1 degrees.
 */
static void gen_arc( std::vector <wxPoint>& aBuffer,
                     wxPoint                aStartPoint,
                     wxPoint                aCenter,
                     int                    a_ArcAngle )
{
    #define SEGM_COUNT_PER_360DEG 16
    wxPoint first_point = aStartPoint - aCenter;
    int     seg_count   = ( ( abs( a_ArcAngle ) ) * SEGM_COUNT_PER_360DEG ) / 3600;

    if( seg_count == 0 )
        seg_count = 1;

    double increment_angle = (double) a_ArcAngle * 3.14159 / 1800 / seg_count;

    // Creates nb_seg point to approximate arc by segments:
    for( int ii = 1; ii <= seg_count; ii++ )
    {
        double  rot_angle = increment_angle * ii;
        double  fcos = cos( rot_angle );
        double  fsin = sin( rot_angle );
        wxPoint currpt;

        // Rotate current point:
        currpt.x = wxRound( ( first_point.x * fcos + first_point.y * fsin ) );
        currpt.y = wxRound( ( first_point.y * fcos - first_point.x * fsin ) );

        wxPoint corner = aCenter + currpt;
        aBuffer.push_back( corner );
    }
}


/**
 * Function BuildCornersList_S_Shape
 * Create a path like a S-shaped coil
 * @param  aBuffer =  a buffer where to store points (ends of segments)
 * @param  aStartPoint = starting point of the path
 * @param  aEndPoint = ending point of the path
 * @param  aLength = full lenght of the path
 * @param  aWidth = segment width
 */
int BuildCornersList_S_Shape( std::vector <wxPoint>& aBuffer,
                              wxPoint aStartPoint, wxPoint aEndPoint,
                              int aLength, int aWidth )
{
/* We must determine:
 * segm_count = number of segments perpendicular to the direction
 * segm_len = length of a strand
 * radius = radius of rounded parts of the coil
 * stubs_len = length of the 2 stubs( segments parallel to the direction)
 *         connecting the start point to the start point of the S shape
 *         and the ending point to the end point of the S shape
 * The equations are (assuming the area size of the entire shape is Size:
 * Size.x = 2 * radius + segm_len
 * Size.y = (segm_count + 2 ) * 2 * radius + 2 * stubs_len
 * Mself.lng = 2 * delta // connections to the coil
 *             + (segm_count-2) * segm_len      // length of the strands except 1st and last
 *             + (segm_count) * (PI * radius)   // length of rounded
 * segm_len + / 2 - radius * 2)                 // length of 1st and last bit
 *
 * The constraints are:
 * segm_count >= 2
 * radius < m_Size.x
 * Size.y = (radius * 4) + (2 * stubs_len)
 * segm_len > radius * 2
 *
 * The calculation is conducted in the following way:
 * first:
 * segm_count = 2
 * radius = 4 * Size.x (arbitrarily fixed value)
 * Then:
 * Increasing the number of segments to the desired length
 * (radius decreases if necessary)
 */
    wxSize size;

    // This scale factor adjust the arc lenght to handle
    // the arc to segment approximation.
    // because we use SEGM_COUNT_PER_360DEG segment to approximate a circle,
    // the trace len must be corrected when calculated using arcs
    // this factor adjust calculations and must be canged if SEGM_COUNT_PER_360DEG is modified
    // because trace using segment is shorter the corresponding arc
    // ADJUST_SIZE is the ratio between tline len and the arc len for an arc
    // of 360/ADJUST_SIZE angle
    #define ADJUST_SIZE 0.988

    wxPoint pt       = aEndPoint - aStartPoint;
    int     angle    = -wxRound( atan2( (double) pt.y, (double) pt.x ) * 1800.0 / M_PI );
    int     min_len  = wxRound( sqrt( (double) pt.x * pt.x + (double) pt.y * pt.y ) );
    int     segm_len = 0;           // lenght of segments
    int     full_len;               // full len of shape (sum of lenght of all segments + arcs)


    /* Note: calculations are made for a vertical coil (more easy calculations)
     * and after points are rotated to their actual position
     * So the main direction is the Y axis.
     * the 2 stubs are on the Y axis
     * the others segments are parallel to the X axis.
     */

    // Calculate the size of area (for a vertical shape)
    size.x = min_len / 2;
    size.y = min_len;

    // Choose a reasonable starting value for the radius of the arcs.
    int radius = MIN( aWidth * 5, size.x / 4 );

    int segm_count;     // number of full len segments
                        // the half size segments (first and last segment) are not counted here
    int stubs_len = 0;  // lenght of first or last segment (half size of others segments)
    for( segm_count = 0; ; segm_count++ )
    {
        stubs_len = ( size.y - ( radius * 2 * (segm_count + 2 ) ) ) / 2;
        if( stubs_len < size.y / 10 ) // Reduce radius.
        {
            stubs_len = size.y / 10;
            radius    = ( size.y - (2 * stubs_len) ) / ( 2 * (segm_count + 2) );
            if( radius < aWidth ) // Radius too small.
            {
                // Unable to create line: Requested length value is too large for room
                return 0;
            }
        }
        segm_len  = size.x - ( radius * 2 );
        full_len  = 2 * stubs_len;                                                  // Length of coil connections.
        full_len += segm_len * segm_count;                                          // Length of full length segments.
        full_len += wxRound( ( segm_count + 2 ) * M_PI * ADJUST_SIZE * radius );    // Ard arcs len
        full_len += segm_len - (2 * radius);                                        // Length of first and last segments
                                                                                    // (half size segments len = segm_len/2 - radius).

        if( full_len >= aLength )
            break;
    }

    // Adjust len by adjusting segm_len:
    int delta_size = full_len - aLength;

    // reduce len of the segm_count segments + 2 half size segments (= 1 full size segment)
    segm_len -= delta_size / (segm_count + 1);

    // Generate first line (the first stub) and first arc (90 deg arc)
    pt = aStartPoint;
    aBuffer.push_back( pt );
    pt.y += stubs_len;
    aBuffer.push_back( pt );

    wxPoint centre = pt;
    centre.x -= radius;
    gen_arc( aBuffer, pt, centre, -900 );
    pt = aBuffer.back();

    int half_size_seg_len = segm_len / 2 - radius;
    if( half_size_seg_len )
    {
        pt.x -= half_size_seg_len;
        aBuffer.push_back( pt );
    }

    /* Create shape. */
    int ii;
    int sign = 1;
    segm_count += 1;    // increase segm_count to create the last half_size segment
    for( ii = 0; ii < segm_count; ii++ )
    {
        int arc_angle;

        if( ii & 1 ) /* odd order arcs are greater than 0 */
            sign = -1;
        else
            sign = 1;
        arc_angle = 1800 * sign;
        centre    = pt;
        centre.y += radius;
        gen_arc( aBuffer, pt, centre, arc_angle );
        pt    = aBuffer.back();
        pt.x += segm_len * sign;
        aBuffer.push_back( pt );
    }

    // The last point is false:
    // it is the end of a full size segment, but must be
    // the end of the second half_size segment. Change it.
    sign *= -1;
    aBuffer.back().x = aStartPoint.x + radius * sign;

    // create last arc
    pt        = aBuffer.back();
    centre    = pt;
    centre.y += radius;
    gen_arc( aBuffer, pt, centre, 900 * sign );    pt = aBuffer.back();

    // Rotate point
    angle += 900;
    for( unsigned jj = 0; jj < aBuffer.size(); jj++ )
    {
        RotatePoint( &aBuffer[jj].x, &aBuffer[jj].y,
                     aStartPoint.x, aStartPoint.y, angle );
    }

    // push last point (end point)
    aBuffer.push_back( aEndPoint );

    return 1;
}


/* Create a footprint with pad_count pads for micro wave applications
 *  This footprint has pad_count pads:
 *  PAD_SMD, rectangular, H size = V size = current track width.
 */
MODULE* PCB_EDIT_FRAME::Create_MuWaveBasicShape( const wxString& name, int pad_count )
{
    MODULE*  Module;
    int      pad_num = 1;
    wxString Line;

    Module = Create_1_Module( name );
    if( Module == NULL )
        return NULL;

    #define DEFAULT_SIZE 30
    Module->m_TimeStamp           = GetTimeStamp();
    Module->m_Value->m_Size       = wxSize( DEFAULT_SIZE, DEFAULT_SIZE );
    Module->m_Value->m_Pos0.y     = -DEFAULT_SIZE;
    Module->m_Value->m_Pos.y     += Module->m_Value->m_Pos0.y;
    Module->m_Value->m_Thickness      = DEFAULT_SIZE / 4;
    Module->m_Reference->m_Size   = wxSize( DEFAULT_SIZE, DEFAULT_SIZE );
    Module->m_Reference->m_Pos0.y = DEFAULT_SIZE;
    Module->m_Reference->m_Pos.y += Module->m_Reference->m_Pos0.y;
    Module->m_Reference->m_Thickness  = DEFAULT_SIZE / 4;

    /* Create 2 pads used in gaps and stubs.
     *  The gap is between these 2 pads
     * the stub is the pad 2
     */
    while( pad_count-- )
    {
        D_PAD* pad = new D_PAD( Module );

        Module->m_Pads.PushFront( pad );

        pad->m_Size.x       = pad->m_Size.y = GetBoard()->GetCurrentTrackWidth();
        pad->m_Pos          = Module->m_Pos;
        pad->m_PadShape     = PAD_RECT;
        pad->m_Attribut     = PAD_SMD;
        pad->m_Masque_Layer = LAYER_FRONT;
        Line.Printf( wxT( "%d" ), pad_num );
        pad->SetPadName( Line );
        pad_num++;
    }

    return Module;
}


/* Create a module "GAP" or "STUB"
 *  This a "gap" or  "stub" used in micro wave designs
 *  This module has 2 pads:
 *  PAD_SMD, rectangular, H size = V size = current track width.
 *  the "gap" is isolation created between this 2 pads
 */
MODULE* PCB_EDIT_FRAME::Create_MuWaveComponent(  int shape_type )
{
    int      oX;
    D_PAD*   pad;
    MODULE*  Module;
    wxString msg, cmp_name;
    int      pad_count = 2;
    int      angle     = 0;

    /* Enter the size of the gap or stub*/
    int      gap_size = GetBoard()->GetCurrentTrackWidth();

    switch( shape_type )
    {
    case 0:
        msg = _( "Gap" );
        cmp_name = wxT( "GAP" );
        break;

    case 1:
        msg = _( "Stub" );
        cmp_name  = wxT( "STUB" );
        pad_count = 2;
        break;

    case 2:
        msg = _( "Arc Stub" );
        cmp_name  = wxT( "ASTUB" );
        pad_count = 1;
        break;

    default:
        msg = wxT( "???" );
        break;
    }

    wxString          value = ReturnStringFromValue( g_UserUnit, gap_size,
                                                    GetScreen()->GetInternalUnits() );
    wxTextEntryDialog dlg( this, msg, _( "Create microwave module" ), value );
    if( dlg.ShowModal() != wxID_OK )
    {
        DrawPanel->MoveCursorToCrossHair();
        return NULL; // cancelled by user
    }

    value    = dlg.GetValue();
    gap_size = ReturnValueFromString( g_UserUnit, value, GetScreen()->GetInternalUnits() );

    bool abort = false;
    if( shape_type == 2 )
    {
        double            fcoeff = 10.0, fval;
        msg.Printf( wxT( "%3.1f" ), angle / fcoeff );
        wxTextEntryDialog angledlg( this, _( "Angle (0.1deg):" ), _(
                                        "Create microwave module" ), msg );
        if( angledlg.ShowModal() != wxID_OK )
        {
            DrawPanel->MoveCursorToCrossHair();
            return NULL; // cancelled by user
        }
        msg = angledlg.GetValue();
        if( !msg.ToDouble( &fval ) )
        {
            DisplayError( this, _( "Incorrect number, abort" ) );
            abort = TRUE;
        }
        angle = ABS( wxRound( fval * fcoeff ) );
        if( angle > 1800 )
            angle = 1800;
    }

    if( abort )
    {
        DrawPanel->MoveCursorToCrossHair();
        return NULL;
    }

    Module = Create_MuWaveBasicShape( cmp_name, pad_count );
    pad    = Module->m_Pads;

    switch( shape_type )
    {
    case 0:     //Gap :
        oX = pad->m_Pos0.x = -( gap_size + pad->m_Size.x ) / 2;
        pad->m_Pos.x += pad->m_Pos0.x;
        pad = pad->Next();
        pad->m_Pos0.x = oX + gap_size + pad->m_Size.x;
        pad->m_Pos.x += pad->m_Pos0.x;
        break;

    case 1:     //Stub :
        pad->SetPadName( wxT( "1" ) );
        pad = pad->Next();
        pad->m_Pos0.y = -( gap_size + pad->m_Size.y ) / 2;
        pad->m_Size.y = gap_size;
        pad->m_Pos.y += pad->m_Pos0.y;
        break;

    case 2:     // Arc Stub created by a polygonal approach:
    {
        EDGE_MODULE* edge = new EDGE_MODULE( Module );
        Module->m_Drawings.PushFront( edge );

        edge->m_Shape = S_POLYGON;
        edge->SetLayer( LAYER_N_FRONT );

        int numPoints = angle / 50 + 3;     // Note: angles are in 0.1 degrees
        edge->m_PolyPoints.reserve( numPoints );

        edge->m_Start0.y = -pad->m_Size.y / 2;

        edge->m_PolyPoints.push_back( wxPoint( 0, 0 ) );

        int theta = -angle / 2;
        for( int ii = 1; ii<numPoints - 1; ii++ )
        {
            wxPoint pt( 0, -gap_size );

            RotatePoint( &pt.x, &pt.y, theta );

            edge->m_PolyPoints.push_back( pt );

            theta += 50;
            if( theta > angle / 2 )
                theta = angle / 2;
        }

        // Close the polygon:
        edge->m_PolyPoints.push_back( edge->m_PolyPoints[0] );
    }
    break;

    default:
        break;
    }

    Module->Set_Rectangle_Encadrement();
    GetBoard()->m_Status_Pcb = 0;
    OnModify();
    return Module;
}


/**************** Polygon Shapes ***********************/

enum id_mw_cmd {
    ID_READ_SHAPE_FILE = 1000
};


/* Setting polynomial form parameters
 */
class WinEDA_SetParamShapeFrame : public wxDialog
{
private:
    PCB_EDIT_FRAME*  m_Parent;
    wxRadioBox*      m_ShapeOptionCtrl;
    WinEDA_SizeCtrl* m_SizeCtrl;

public: WinEDA_SetParamShapeFrame( PCB_EDIT_FRAME* parent, const wxPoint& pos );
    ~WinEDA_SetParamShapeFrame() { };

private:
    void OnOkClick( wxCommandEvent& event );
    void OnCancelClick( wxCommandEvent& event );
    void ReadDataShapeDescr( wxCommandEvent& event );
    void AcceptOptions( wxCommandEvent& event );

    DECLARE_EVENT_TABLE()
};


BEGIN_EVENT_TABLE( WinEDA_SetParamShapeFrame, wxDialog )
EVT_BUTTON( wxID_OK, WinEDA_SetParamShapeFrame::OnOkClick )
EVT_BUTTON( wxID_CANCEL, WinEDA_SetParamShapeFrame::OnCancelClick )
EVT_BUTTON( ID_READ_SHAPE_FILE,
            WinEDA_SetParamShapeFrame::ReadDataShapeDescr )
END_EVENT_TABLE()

WinEDA_SetParamShapeFrame::WinEDA_SetParamShapeFrame( PCB_EDIT_FRAME* parent,
                                                      const wxPoint&  framepos ) :
    wxDialog( parent, -1, _( "Complex shape" ), framepos, wxSize( 350, 280 ),
              DIALOG_STYLE )
{
    m_Parent = parent;

    if( PolyEdges )
        free( PolyEdges );
    PolyEdges = NULL;
    PolyEdgesCount = 0;

    wxBoxSizer* MainBoxSizer = new wxBoxSizer( wxHORIZONTAL );
    SetSizer( MainBoxSizer );
    wxBoxSizer* LeftBoxSizer  = new wxBoxSizer( wxVERTICAL );
    wxBoxSizer* RightBoxSizer = new wxBoxSizer( wxVERTICAL );
    MainBoxSizer->Add( LeftBoxSizer, 0, wxGROW | wxALL, 5 );
    MainBoxSizer->Add( RightBoxSizer, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5 );

    wxButton* Button = new wxButton( this, wxID_OK, _( "OK" ) );
    RightBoxSizer->Add( Button, 0, wxGROW | wxALL, 5 );

    Button = new wxButton( this, wxID_CANCEL, _( "Cancel" ) );
    RightBoxSizer->Add( Button, 0, wxGROW | wxALL, 5 );

    Button =
        new wxButton( this, ID_READ_SHAPE_FILE,
                     _( "Read Shape Description File..." ) );
    RightBoxSizer->Add( Button, 0, wxGROW | wxALL, 5 );

    wxString shapelist[3] =
    {
        _( "Normal" ), _( "Symmetrical" ),
        _( "Mirrored" )
    };
    m_ShapeOptionCtrl = new wxRadioBox( this, -1, _( "Shape Option" ),
                                        wxDefaultPosition, wxDefaultSize, 3,
                                        shapelist, 1,
                                        wxRA_SPECIFY_COLS );
    LeftBoxSizer->Add( m_ShapeOptionCtrl, 0, wxGROW | wxALL, 5 );

    m_SizeCtrl = new WinEDA_SizeCtrl( this, _( "Size" ), ShapeSize,
                                      g_UserUnit, LeftBoxSizer,
                                      PCB_INTERNAL_UNIT );

    GetSizer()->Fit( this );
    GetSizer()->SetSizeHints( this );
}


void WinEDA_SetParamShapeFrame::OnCancelClick( wxCommandEvent& event )
{
    if( PolyEdges )
        free( PolyEdges );
    PolyEdges = NULL;
    PolyEdgesCount = 0;
    EndModal( -1 );
}


void WinEDA_SetParamShapeFrame::OnOkClick( wxCommandEvent& event )
{
    ShapeSize     = m_SizeCtrl->GetValue();
    PolyShapeType = m_ShapeOptionCtrl->GetSelection();
    EndModal( 1 );
}


/* Read a description shape file
 *  File format is
 *  Unit=MM
 *  XScale=271.501
 *  YScale=1.00133
 *
 *  $COORD
 *  0                      0.6112600148417837
 *  0.001851851851851852   0.6104800531118608
 *  ....
 *  $ENDCOORD
 *
 *  Each line is the X Y coord (normalized units from 0 to 1)
 */
void WinEDA_SetParamShapeFrame::ReadDataShapeDescr( wxCommandEvent& event )
{
    wxString FullFileName;
    wxString ext, mask;
    FILE*    File;
    char*    Line;
    double   unitconv = 10000;
    char*    param1, * param2;
    int      bufsize;
    double*  ptbuf;

    ext  = wxT( ".txt" );
    mask = wxT( "*" ) + ext;
    FullFileName = EDA_FileSelector( _( "Read descr shape file" ),
                                     wxEmptyString,
                                     FullFileName,
                                     ext,
                                     mask,
                                     this,
                                     wxFD_OPEN,
                                     TRUE );
    if( FullFileName.IsEmpty() )
        return;

    File = wxFopen( FullFileName, wxT( "rt" ) );

    if( File == NULL )
    {
        DisplayError( this, _( "File not found" ) );
        return;
    }

    FILE_LINE_READER fileReader( File, FullFileName );

    FILTER_READER reader( fileReader );

    bufsize = 100;
    ptbuf   = PolyEdges = (double*) MyZMalloc( bufsize * 2 * sizeof(double) );

    SetLocaleTo_C_standard();
    while( reader.ReadLine() )
    {
        Line = reader.Line();
        param1 = strtok( Line, " =\n\r" );
        param2 = strtok( NULL, " \t\n\r" );

        if( strnicmp( param1, "Unit", 4 ) == 0 )
        {
            if( strnicmp( param2, "inch", 4 ) == 0 )
                unitconv = 10000;
            if( strnicmp( param2, "mm", 2 ) == 0 )
                unitconv = 10000 / 25.4;
        }
        if( strnicmp( param1, "$ENDCOORD", 8 ) == 0 )
            break;
        if( strnicmp( param1, "$COORD", 6 ) == 0 )
        {
            while( reader.ReadLine() )
            {
                Line = reader.Line();
                param1 = strtok( Line, " \t\n\r" );
                param2 = strtok( NULL, " \t\n\r" );
                if( strnicmp( param1, "$ENDCOORD", 8 ) == 0 )
                    break;
                if( bufsize <= PolyEdgesCount )
                {
                    int index = ptbuf - PolyEdges;
                    bufsize *= 2;
                    ptbuf    = PolyEdges = (double*) realloc(
                                   PolyEdges, bufsize * 2 *
                                   sizeof(double) );
                    ptbuf += index;
                }
                *ptbuf = atof( param1 );
                ptbuf++;
                *ptbuf = atof( param2 );
                ptbuf++;
                PolyEdgesCount++;
            }
        }
        if( strnicmp( Line, "XScale", 6 ) == 0 )
        {
            ShapeScaleX = atof( param2 );
        }
        if( strnicmp( Line, "YScale", 6 ) == 0 )
        {
            ShapeScaleY = atof( param2 );
        }
    }

    if( PolyEdgesCount == 0 )
    {
        free( PolyEdges );
        PolyEdges = NULL;
    }
    SetLocaleTo_Default();       // revert to the current locale

    ShapeScaleX *= unitconv;
    ShapeScaleY *= unitconv;

    m_SizeCtrl->SetValue( (int) ShapeScaleX, (int) ShapeScaleY );
}


MODULE* PCB_EDIT_FRAME::Create_MuWavePolygonShape()
{
    D_PAD*       pad1, * pad2;
    MODULE*      Module;
    wxString     cmp_name;
    int          pad_count = 2;
    EDGE_MODULE* edge;
    int          ii, npoints;

    WinEDA_SetParamShapeFrame* frame = new WinEDA_SetParamShapeFrame(
        this, wxPoint( -1, -1 ) );

    int ok = frame->ShowModal();

    frame->Destroy();

    DrawPanel->MoveCursorToCrossHair();

    if( ok != 1 )
    {
        if( PolyEdges )
            free( PolyEdges );
        PolyEdges = NULL;
        PolyEdgesCount = 0;
        return NULL;
    }

    if( PolyShapeType == 2 )  // mirrored
        ShapeScaleY = -ShapeScaleY;

    ShapeSize.x = wxRound( ShapeScaleX );
    ShapeSize.y = wxRound( ShapeScaleY );

    if( ( ShapeSize.x ) == 0 || ( ShapeSize.y == 0 ) )
    {
        DisplayError( this, _( "Shape has a null size!" ) );
        return NULL;
    }
    if( PolyEdgesCount == 0 )
    {
        DisplayError( this, _( "Shape has no points!" ) );
        return NULL;
    }

    cmp_name = wxT( "POLY" );

    Module = Create_MuWaveBasicShape( cmp_name, pad_count );
    pad1   = Module->m_Pads;

    pad1->m_Pos0.x = -ShapeSize.x / 2;
    pad1->m_Pos.x += pad1->m_Pos0.x;

    pad2 = (D_PAD*) pad1->Next();
    pad2->m_Pos0.x = pad1->m_Pos0.x + ShapeSize.x;
    pad2->m_Pos.x += pad2->m_Pos0.x;

    edge = new EDGE_MODULE( Module );

    Module->m_Drawings.PushFront( edge );

    edge->m_Shape = S_POLYGON;
    edge->SetLayer( LAYER_N_FRONT );
    npoints = PolyEdgesCount;

    edge->m_PolyPoints.reserve( 2 * PolyEdgesCount + 2 );

    // Init start point coord:
    edge->m_PolyPoints.push_back( wxPoint( pad1->m_Pos0.x, 0 ) );

    double* dptr = PolyEdges;
    wxPoint first_coordinate, last_coordinate;
    for( ii = 0; ii < npoints; ii++ )  // Copy points
    {
        last_coordinate.x = wxRound( *dptr++ *ShapeScaleX ) + pad1->m_Pos0.x;
        last_coordinate.y = -wxRound( *dptr++ *ShapeScaleY );
        edge->m_PolyPoints.push_back( last_coordinate );
    }

    first_coordinate.y = edge->m_PolyPoints[1].y;

    switch( PolyShapeType )
    {
    case 0:     // Single
    case 2:     // Single mirrored
        // Init end point coord:
        pad2->m_Pos0.x = last_coordinate.x;
        edge->m_PolyPoints.push_back( wxPoint( last_coordinate.x, 0 ) );

        pad1->m_Size.x = pad1->m_Size.y = ABS( first_coordinate.y );
        pad2->m_Size.x = pad2->m_Size.y = ABS( last_coordinate.y );
        pad1->m_Pos0.y = first_coordinate.y / 2;
        pad2->m_Pos0.y = last_coordinate.y / 2;
        pad1->m_Pos.y  = pad1->m_Pos0.y + Module->m_Pos.y;
        pad2->m_Pos.y  = pad2->m_Pos0.y + Module->m_Pos.y;
        break;

    case 1:     // Symmetric
        for( int ndx = edge->m_PolyPoints.size() - 1; ndx>=0; --ndx )
        {
            wxPoint pt = edge->m_PolyPoints[ndx];

            pt.y = -pt.y;   // mirror about X axis

            edge->m_PolyPoints.push_back( pt );
        }

        pad1->m_Size.x = pad1->m_Size.y = 2 * ABS( first_coordinate.y );
        pad2->m_Size.x = pad2->m_Size.y = 2 * ABS( last_coordinate.y );
        break;
    }

    free( PolyEdges );
    PolyEdgesCount = 0;
    PolyEdges = NULL;

    Module->Set_Rectangle_Encadrement();
    GetBoard()->m_Status_Pcb = 0;
    OnModify();
    return Module;
}


/*
 * Edit the GAP module, if it has changed the position and/or size
 * Pads that form the gap to get a new value of the gap.
 */
void PCB_EDIT_FRAME::Edit_Gap( wxDC* DC, MODULE* Module )
{
    int      gap_size, oX;
    D_PAD*   pad, * next_pad;
    wxString msg;

    if( Module == NULL )
        return;

    /* Test if module is a gap type (name begins with GAP, and has 2 pads). */
    msg = Module->m_Reference->m_Text.Left( 3 );
    if( msg != wxT( "GAP" ) )
        return;

    pad = Module->m_Pads;
    if( pad == NULL )
    {
        DisplayError( this, _( "No pad for this module" ) );
        return;
    }
    next_pad = (D_PAD*) pad->Next();
    if( next_pad == NULL )
    {
        DisplayError( this, _( "Only one pad for this module" ) );
        return;
    }

    Module->Draw( DrawPanel, DC, GR_XOR );

    /* Calculate the current dimension. */
    gap_size = next_pad->m_Pos0.x - pad->m_Pos0.x - pad->m_Size.x;

    /* Entrer the desired length of the gap. */
    msg = ReturnStringFromValue( g_UserUnit, gap_size, GetScreen()->GetInternalUnits() );
    wxTextEntryDialog dlg( this, _( "Gap:" ), _( "Create Microwave Gap" ), msg );
    if( dlg.ShowModal() != wxID_OK )
        return; // cancelled by user

    msg = dlg.GetValue();
    gap_size = ReturnValueFromString( g_UserUnit, msg, GetScreen()->GetInternalUnits() );

    /* Updating sizes of pads forming the gap. */
    pad->m_Size.x = pad->m_Size.y = GetBoard()->GetCurrentTrackWidth();
    pad->m_Pos0.y = 0;
    oX = pad->m_Pos0.x = -( (gap_size + pad->m_Size.x) / 2 );
    pad->m_Pos.x = pad->m_Pos0.x + Module->m_Pos.x;
    pad->m_Pos.y = pad->m_Pos0.y + Module->m_Pos.y;
    RotatePoint( &pad->m_Pos.x, &pad->m_Pos.y,
                 Module->m_Pos.x, Module->m_Pos.y, Module->m_Orient );

    next_pad->m_Size.x = next_pad->m_Size.y = GetBoard()->GetCurrentTrackWidth();
    next_pad->m_Pos0.y = 0;
    next_pad->m_Pos0.x = oX + gap_size + next_pad->m_Size.x;
    next_pad->m_Pos.x  = next_pad->m_Pos0.x + Module->m_Pos.x;
    next_pad->m_Pos.y  = next_pad->m_Pos0.y + Module->m_Pos.y;
    RotatePoint( &next_pad->m_Pos.x, &next_pad->m_Pos.y,
                 Module->m_Pos.x, Module->m_Pos.y, Module->m_Orient );

    Module->Draw( DrawPanel, DC, GR_OR );
}