#include "gktogk.h"
#include "ui_gktogk.h"

GKtoGK::GKtoGK(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::GKtoGK)
{
    ui->setupUi(this);
    setAttribute(Qt::WA_DeleteOnClose);

    ((Widget*)parent)->changeOpenWidget(this);
}

GKtoGK::~GKtoGK()
{
    delete ui;
}

void GKtoGK::on_pushButton_2_clicked()
{
    close();
}

void GKtoGK::closeEvent(QCloseEvent *event)
{
    ((Widget*)parent())->clearOpenWidget();
    event->accept();
}

void GKtoGK::on_pushButton_clicked()
{
    int nZone1, nZone2;
    bool south;

    int XL, YL;
    int XL1, YL1;


    double CB2=8376121.0;
    double CB4=590.42;
    double CB6=1.68;

    double CA2=5333.5419;
    double CA4=4.84339;
    double CA6=0.007622;

    double A1,A2,A3,B1,B2,B3,C1,C2,C3,D1,D2,D3,
            P,PU,G,E,EU,FI,L0,TGA,TGL,U,V,TG,SFI,
            EL,TGE,THP;


    nZone1 = ui->lineEdit->text().toInt();
    south = ui->checkBox->isChecked();

    XL      = ui->lineEdit_2->text().toInt();
    YL      = ui->lineEdit_3->text().toInt();

    nZone2 = ui->lineEdit_4->text().toInt();
    // расчет

    V=YL-500000.0;
    U=XL/6367558.497;
    V=V/6367558.497;
    A1=sin(2.0*U);
    B1=cos(2.0*U);
    A2=2.0*A1*B1;
    B2=1.0-2.0*A1*A1;
    A3=A1*B2+A2*B1;
    B3=B1*B2-A1*A2;
    C1=sinh(2.0*V);
    D1=sqrt(1.0+C1*C1);
    C2=2.0*C1*D1;
    D2=1.0+2.0*C1*C1;
    C3=C1*D2+C2*D1;
    D3=C1*C2+D1*D2;
    E=U-(CB2*A1*D1+CB4*A2*D2+CB6*A3*D3)*0.0000000001;
    P=V-(CB2*B1*C1+CB4*B2*C2+CB6*B3*C3)*0.0000000001;
    EU=10000000000.0-(2.0*CB2*B1*D1+4.0*CB4*B2*D2+
                      6.0*CB6*B3*D3);
    PU=(2.0*CB2*A1*C1+4.0*CB4*A2*C2+6.0*CB6*A3*C3);
    SFI=sin(E)/cosh(P);
    TGL=sinh(P)/cos(E);
    TGA=SFI*TGL;
    FI=asin(SFI);
    B=(5645.0*SFI*SFI-531245.0)*SFI*SFI;
    B=(B+67385254.0)*SFI*cos(FI)*0.0000000001;
    B=B+FI;
    TG=PU/EU;
    G=atan(TGA)+atan(TG);
    L=atan(TGL);
    L0=double(nZone1)*6.0-3.0;
    L0=L0*M_PI/180.0;
    L=L+L0;
    if (L<0.0) L=L+(2.0*M_PI);
        else if (L>(2.0*M_PI)) L=L-(2.0*M_PI);



    L0=double(nZone2)*6.0-3.0;
    L0=L0*M_PI/180.0;
    EL=L-L0;
    FI=(2624.0*sin(B)*sin(B)+372834.0)*sin(B)*sin(B);
    FI=B-((FI+66934216.0)*sin(B)*cos(B)*0.0000000001);
    TGE=tan(FI)/cos(EL);
    E=atan(TGE);
    THP=cos(FI)*sin(EL);
    P=0.5*log((1.0+THP)/(1.0-THP));
    A1=sin(2.0*E);
    B1=cos(2.0*E);
    C1=sinh(2.0*P);
    D1=cosh(2.0*P);
    A2=2.0*A1*B1;
    B2=1.0-2.0*A1*A1;
    C2=2.0*C1*D1;
    D2=1.0+2.0*C1*C1;
    A3=A1*B2+A2*B1;
    B3=B1*B2-A1*A2;
    C3=C1*D2+C2*D1;
    D3=D1*D2+C1*C2;

    XL1 = (int)(6367558.497*E+CA2*A1*D1+CA4*A2*D2+CA6*A3*D3);
    if (XL1<0) XL1=-XL1;

    YL1 = (int)(6367558.497*P+CA2*B1*C1+CA4*B2*C2+CA6*B3*C3 + 500000.0);


    ui->lineEdit_5->setText(QString::number(XL1));
    ui->lineEdit_6->setText(QString::number(YL1));
}