699 lines
22 KiB
C++
699 lines
22 KiB
C++
#include "tracesmithchart.h"
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#include "preferences.h"
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#include "ui_smithchartdialog.h"
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#include "unit.h"
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#include "QFileDialog"
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#include "appwindow.h"
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#include "CustomWidgets/informationbox.h"
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#include <QPainter>
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#include <array>
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#include <math.h>
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#include <QDebug>
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#include <QColorDialog>
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using namespace std;
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TraceSmithChart::TraceSmithChart(TraceModel &model, QWidget *parent)
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: TracePolar(model, parent)
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{
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Z0 = 50.0;
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}
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nlohmann::json TraceSmithChart::toJSON()
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{
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nlohmann::json j;
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j = TracePolar::toJSON();
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j["Z0"] = Z0;
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nlohmann::json jlines;
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for(auto line : constantLines) {
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jlines.push_back(line.toJSON());
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}
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j["constantLines"] = jlines;
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return j;
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}
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void TraceSmithChart::fromJSON(nlohmann::json j)
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{
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TracePolar::fromJSON(j);
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Z0 = j.value("Z0", 50.0);
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if(j.contains("constantLines")) {
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for(auto jline : j["constantLines"]) {
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SmithChartConstantLine line;
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line.fromJSON(jline);
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constantLines.push_back(line);
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}
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}
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}
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void TraceSmithChart::axisSetupDialog()
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{
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auto dialog = new QDialog();
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auto ui = new Ui::SmithChartDialog();
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ui->setupUi(dialog);
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if(limitToSpan) {
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ui->displayModeFreq->setCurrentIndex(1);
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} else {
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ui->displayModeFreq->setCurrentIndex(0);
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}
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if(limitToEdge) {
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ui->displayModeImp->setCurrentIndex(1);
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} else {
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ui->displayModeImp->setCurrentIndex(0);
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}
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ui->zoomReflection->setPrecision(3);
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ui->zoomFactor->setPrecision(3);
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ui->zoomReflection->setValue(edgeReflection);
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ui->zoomFactor->setValue(1.0/edgeReflection);
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ui->offsetRealAxis->setValue(dx);
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ui->impedance->setUnit("Ω");
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ui->impedance->setPrecision(3);
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ui->impedance->setValue(Z0);
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auto model = new SmithChartContantLineModel(*this);
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ui->lineTable->setModel(model);
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ui->lineTable->setItemDelegateForColumn(SmithChartContantLineModel::ColIndexType, new SmithChartTypeDelegate);
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ui->lineTable->setItemDelegateForColumn(SmithChartContantLineModel::ColIndexParam, new SmithChartParamDelegate);
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connect(ui->buttonBox, &QDialogButtonBox::accepted, [=](){
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limitToSpan = ui->displayModeFreq->currentIndex() == 1;
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limitToEdge = ui->displayModeImp->currentIndex() == 1;
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triggerReplot();
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});
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connect(ui->zoomFactor, &SIUnitEdit::valueChanged, [=](){
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edgeReflection = 1.0 / ui->zoomFactor->value();
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ui->zoomReflection->setValueQuiet(edgeReflection);
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});
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connect(ui->zoomReflection, &SIUnitEdit::valueChanged, [=](){
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edgeReflection = ui->zoomReflection->value();
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ui->zoomFactor->setValueQuiet(1.0 / edgeReflection);
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});
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connect(ui->offsetRealAxis, &SIUnitEdit::valueChanged, [=](){
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dx = ui->offsetRealAxis->value();
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});
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connect(ui->impedance, &SIUnitEdit::valueChanged, [=](){
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Z0 = ui->impedance->value();
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for(auto t : traces) {
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if(t.second) {
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checkIfStillSupported(t.first);
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}
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}
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ui->impedance->setValueQuiet(Z0);
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});
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connect(ui->lineTable, &QTableView::clicked, [=](const QModelIndex &index){
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if(index.column() == SmithChartContantLineModel::ColIndexColor) {
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auto line = &constantLines[index.row()];
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auto newColor = QColorDialog::getColor(line->getColor(), parentWidget(), "Select color", QColorDialog::DontUseNativeDialog);
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if(newColor.isValid()) {
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line->setColor(newColor);
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emit model->dataChanged(index, index);
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triggerReplot();
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}
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}
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});
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auto updatePersistentEditors = [=](){
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for(unsigned int i=0;i<constantLines.size();i++) {
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ui->lineTable->openPersistentEditor(model->index(i, SmithChartContantLineModel::ColIndexType));
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}
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};
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connect(ui->addLine, &QPushButton::clicked, [=](){
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model->beginResetModel();
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constantLines.push_back(SmithChartConstantLine());
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model->endResetModel();
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updatePersistentEditors();
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});
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connect(ui->removeLine, &QPushButton::clicked, [=](){
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auto selected = ui->lineTable->selectionModel()->selectedRows();
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// get indices of lines to delete
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std::vector<int> toDelete;
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for(auto s : selected) {
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toDelete.push_back(s.row());
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}
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// delete starting with highest index (this makes sure that indices are not messed up after deleting an element
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std::sort(toDelete.begin(), toDelete.end());
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model->beginResetModel();
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for (auto i = toDelete.rbegin(); i != toDelete.rend(); i++) {
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constantLines.erase(constantLines.begin() + *i);
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}
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model->endResetModel();
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updatePersistentEditors();
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});
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updatePersistentEditors();
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if(AppWindow::showGUI()) {
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dialog->show();
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}
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}
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bool TraceSmithChart::configureForTrace(Trace *t)
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{
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if(dropSupported(t)) {
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Z0 = t->getReferenceImpedance();
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for(auto t : traces) {
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if(t.second && t.first->getReferenceImpedance() != Z0) {
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enableTrace(t.first, false);
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}
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}
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return true;
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}
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return false;
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}
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void TraceSmithChart::draw(QPainter &p) {
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auto pref = Preferences::getInstance();
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// translate coordinate system so that the smith chart sits in the origin and has a size of 1
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auto w = p.window();
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p.save();
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p.translate(w.width()/2, w.height()/2);
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auto scale = qMin(w.height(), w.width()) / (2.0 * polarCoordMax);
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p.scale(scale, scale);
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transform = p.transform();
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p.restore();
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auto drawArc = [&](SmithChartArc a) {
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a.constrainToCircle(QPointF(0,0), edgeReflection);
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auto topleft = dataToPixel(complex<double>(a.center.x() - a.radius, a.center.y() - a.radius));
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auto bottomright = dataToPixel(complex<double>(a.center.x() + a.radius, a.center.y() + a.radius));
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a.startAngle *= 5760 / (2*M_PI);
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a.spanAngle *= 5760 / (2*M_PI);
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p.drawArc(QRect(topleft, bottomright), a.startAngle, a.spanAngle);
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};
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// Outer circle
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auto pen = QPen(pref.Graphs.Color.axis);
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pen.setCosmetic(true);
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p.setPen(pen);
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drawArc(SmithChartArc(QPointF(0, 0), edgeReflection, 0, 2*M_PI));
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constexpr int Circles = 6;
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pen = QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine);
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pen.setCosmetic(true);
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p.setPen(pen);
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for(int i=1;i<Circles * 2;i++) {
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auto radius = (double) i / Circles;
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drawArc(SmithChartArc(QPointF(1.0 - radius+dx, 0.0), radius, 0, 2*M_PI));
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drawArc(SmithChartArc(QPointF(1.0 + radius+dx, 0.0), radius, 0, 2*M_PI));
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}
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p.drawLine(dataToPixel(complex<double>(edgeReflection,0)),dataToPixel(complex<double>(-edgeReflection,0)));
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constexpr std::array<double, 5> impedanceLines = {10, 25, 50, 100, 250};
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for(auto z : impedanceLines) {
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z /= Z0;
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auto radius = 1.0/z;
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drawArc(SmithChartArc(QPointF(1.0+dx, radius), radius, 0, 2*M_PI));
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drawArc(SmithChartArc(QPointF(1.0+dx, -radius), radius, 0, 2*M_PI));
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}
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// draw custom constant parameter lines
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for(auto line : constantLines) {
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pen = QPen(line.getColor(), pref.Graphs.lineWidth);
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pen.setCosmetic(true);
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p.setPen(pen);
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for(auto arc : line.getArcs(Z0)) {
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drawArc(arc);
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}
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}
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for(auto t : traces) {
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if(!t.second) {
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// trace not enabled in plot
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continue;
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}
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auto trace = t.first;
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if(!trace->isVisible()) {
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// trace marked invisible
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continue;
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}
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pen = QPen(trace->color(), pref.Graphs.lineWidth);
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pen.setCosmetic(true);
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p.setPen(pen);
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int nPoints = trace->size();
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for(int i=1;i<nPoints;i++) {
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auto last = trace->sample(i-1);
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auto now = trace->sample(i);
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if (limitToSpan && (trace->getDataType() == Trace::DataType::Frequency) && (last.x < sweep_fmin || now.x > sweep_fmax)) {
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continue;
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}
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if(isnan(now.y.real())) {
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break;
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}
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last = dataAddDx(last);
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now = dataAddDx(now);
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if (limitToEdge && (abs(last.y) > edgeReflection || abs(now.y) > edgeReflection)) {
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// outside of visible area
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continue;
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}
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// scale to size of smith diagram
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auto p1 = dataToPixel(last);
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auto p2 = dataToPixel(now);
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// draw line
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p.drawLine(p1, p2);
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}
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if(trace->size() > 0) {
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// only draw markers if the trace has at least one point
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auto markers = t.first->getMarkers();
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for(auto m : markers) {
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if(!m->isVisible()) {
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continue;
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}
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// if (m->isTimeDomain()) {
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// continue;
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// }
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if (limitToSpan && (m->getPosition() < sweep_fmin || m->getPosition() > sweep_fmax)) {
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continue;
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}
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if(m->getPosition() < trace->minX() || m->getPosition() > trace->maxX()) {
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// marker not in trace range
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continue;
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}
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auto coords = m->getData();
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coords = dataAddDx(coords);
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if (limitToEdge && abs(coords) > edgeReflection) {
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// outside of visible area
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continue;
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}
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auto point = dataToPixel(coords);
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auto symbol = m->getSymbol();
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p.drawPixmap(point.x() - symbol.width()/2, point.y() - symbol.height(), symbol);
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}
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}
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}
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if(dropPending) {
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// TODO adjust coords due to shifted restore
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p.setOpacity(0.5);
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p.setBrush(Qt::white);
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p.setPen(Qt::white);
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p.drawEllipse(-polarCoordMax, -polarCoordMax, 2*polarCoordMax, 2*polarCoordMax);
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auto font = p.font();
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font.setPixelSize(20);
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p.setFont(font);
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p.setOpacity(1.0);
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p.setPen(Qt::white);
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auto text = "Drop here to add\n" + dropTrace->name() + "\nto Smith chart";
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p.drawText(p.window(), Qt::AlignCenter, text);
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} else {
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}
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}
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void TraceSmithChart::traceDropped(Trace *t, QPoint position)
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{
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if(!supported(t) && dropSupported(t)) {
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// needs to switch to a different domain for the graph
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if(!InformationBox::AskQuestion("Reference impedance change", "You dropped a trace that is not supported with the currently selected reference impedance."
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" Do you want to remove all traces and change the graph to the correct reference imppedance?", true, "ReferenceImpedanceChangeRequest")) {
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// user declined to change domain, to not add change impedance
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return;
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}
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// attempt to configure for this trace
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configureForTrace(t);
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}
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TracePlot::traceDropped(t, position);
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}
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bool TraceSmithChart::dropSupported(Trace *t)
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{
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if(!t->isReflection()) {
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return false;
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}
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switch(t->outputType()) {
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case Trace::DataType::Frequency:
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case Trace::DataType::Power:
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case Trace::DataType::TimeZeroSpan:
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return true;
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default:
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return false;
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}
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}
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QString TraceSmithChart::mouseText(QPoint pos)
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{
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auto dataDx = pixelToData(pos);
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if(abs(dataDx) <= edgeReflection) {
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auto data = complex<double>(dataDx.real()-dx, dataDx.imag());
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data = Z0 * (1.0 + data) / (1.0 - data);
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auto ret = Unit::ToString(data.real(), "", " ", 3);
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if(data.imag() >= 0) {
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ret += "+";
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}
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ret += Unit::ToString(data.imag(), "j", " ", 3);
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return ret;
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} else {
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return QString();
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}
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}
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bool TraceSmithChart::supported(Trace *t)
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{
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if(t->getReferenceImpedance() != Z0) {
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return false;
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}
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return dropSupported(t);
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}
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SmithChartArc::SmithChartArc(QPointF center, double radius, double startAngle, double spanAngle)
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: center(center),
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radius(radius),
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startAngle(startAngle),
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spanAngle(spanAngle)
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{
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}
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void SmithChartArc::constrainToCircle(QPointF center, double radius)
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{
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// check if arc/circle intersect
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auto centerDiff = this->center - center;
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auto centerDistSquared = centerDiff.x() * centerDiff.x() + centerDiff.y() * centerDiff.y();
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if (centerDistSquared >= (radius + this->radius) * (radius + this->radius)) {
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// arc completely outside of constraining circle
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spanAngle = 0.0;
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return;
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} else if (centerDistSquared <= (radius - this->radius) * (radius - this->radius)) {
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if (radius >= this->radius) {
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// arc completely in constraining circle, do nothing
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return;
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} else {
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// arc completely outside of circle
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spanAngle = 0.0;
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return;
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}
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} else {
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// there are intersections between the arc and the circle. Calculate points according to https://stackoverflow.com/questions/3349125/circle-circle-intersection-points
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auto distance = sqrt(centerDistSquared);
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auto a = (this->radius*this->radius-radius*radius+distance*distance) / (2*distance);
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auto h = sqrt(this->radius*this->radius - a*a);
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auto intersectMiddle = this->center + a*(center - this->center) / distance;
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auto rotatedCenterDiff = center - this->center;
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swap(rotatedCenterDiff.rx(), rotatedCenterDiff.ry());
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rotatedCenterDiff.setY(-rotatedCenterDiff.y());
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auto intersect1 = intersectMiddle + h * rotatedCenterDiff / distance;
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auto intersect2 = intersectMiddle - h * rotatedCenterDiff / distance;
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// got intersection points, convert into angles from arc center
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auto wrapAngle = [](double angle) -> double {
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double ret = fmod(angle, 2*M_PI);
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if(ret < 0) {
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ret += 2*M_PI;
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}
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return ret;
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};
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auto angle1 = wrapAngle(atan2((intersect1 - this->center).y(), (intersect1 - this->center).x()));
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auto angle2 = wrapAngle(atan2((intersect2 - this->center).y(), (intersect2 - this->center).x()));
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auto angleDiff = wrapAngle(angle2 - angle1);
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if ((angleDiff >= M_PI) ^ (a > 0.0)) {
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// allowed angles go from intersect1 to intersect2
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if(startAngle < angle1) {
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startAngle = angle1;
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}
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auto maxSpan = wrapAngle(angle2 - startAngle);
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if(spanAngle > maxSpan) {
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spanAngle = maxSpan;
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}
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} else {
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// allowed angles go from intersect2 to intersect1
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if(startAngle < angle2) {
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startAngle = angle2;
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}
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auto maxSpan = wrapAngle(angle1 - startAngle);
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if(spanAngle > maxSpan) {
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spanAngle = maxSpan;
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}
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}
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}
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}
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SmithChartConstantLine::SmithChartConstantLine()
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{
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type = Type::VSWR;
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param = 10.0;
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color = Qt::darkRed;
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}
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std::vector<SmithChartArc> SmithChartConstantLine::getArcs(double Z0)
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{
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std::vector<SmithChartArc> arcs;
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switch(type) {
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case Type::VSWR:
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arcs.push_back(SmithChartArc(QPointF(0.0, 0.0), (param - 1.0) / (param + 1.0)));
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break;
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case Type::Resistance: {
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auto circleLeft = (param / Z0 - 1.0) / (param / Z0 + 1.0);
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arcs.push_back(SmithChartArc(QPointF((circleLeft + 1.0) / 2, 0.0), (1.0 - circleLeft) / 2.0));
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}
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break;
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case Type::Reactance: {
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auto radius = 1.0/(param / Z0);
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if(radius > 0) {
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arcs.push_back(SmithChartArc(QPointF(1.0, radius), radius));
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} else {
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arcs.push_back(SmithChartArc(QPointF(1.0, radius), -radius));
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}
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}
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break;
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case Type::Q: {
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auto center = 1.0 / param;
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auto radius = sqrt(center*center + 1.0);
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arcs.push_back(SmithChartArc(QPointF(0.0, center), radius));
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arcs.push_back(SmithChartArc(QPointF(0.0, -center), radius));
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}
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break;
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case Type::Last:
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break;
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}
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return arcs;
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}
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QColor SmithChartConstantLine::getColor() const
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{
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return color;
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}
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void SmithChartConstantLine::fromJSON(nlohmann::json j)
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{
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type = TypeFromString(QString::fromStdString(j.value("type", "VSWR")));
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if(type == Type::Last) {
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type = Type::VSWR;
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}
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param = j.value("param", 1.0);
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color = QColor(QString::fromStdString(j.value("color", "red")));
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}
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nlohmann::json SmithChartConstantLine::toJSON()
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{
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nlohmann::json j;
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j["type"] = TypeToString(type).toStdString();
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j["param"] = param;
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j["color"] = color.name().toStdString();
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|
return j;
|
|
}
|
|
|
|
QString SmithChartConstantLine::getParamUnit()
|
|
{
|
|
switch(type) {
|
|
case Type::VSWR: return "";
|
|
case Type::Resistance: return "Ω";
|
|
case Type::Reactance: return "Ωj";
|
|
case Type::Q: return "";
|
|
case Type::Last: break;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
QString SmithChartConstantLine::TypeToString(SmithChartConstantLine::Type type)
|
|
{
|
|
switch(type) {
|
|
case Type::VSWR: return "VSWR";
|
|
case Type::Resistance: return "Resistance";
|
|
case Type::Reactance: return "Reactance";
|
|
case Type::Q: return "Q";
|
|
case Type::Last:break;
|
|
}
|
|
// should never get here
|
|
return "Invalid";
|
|
}
|
|
|
|
SmithChartConstantLine::Type SmithChartConstantLine::TypeFromString(QString s)
|
|
{
|
|
for(unsigned int i=0;i<(unsigned int)Type::Last;i++) {
|
|
if(TypeToString((Type) i) == s) {
|
|
return (Type) i;
|
|
}
|
|
}
|
|
return Type::Last;
|
|
}
|
|
|
|
void SmithChartConstantLine::setColor(const QColor &value)
|
|
{
|
|
color = value;
|
|
}
|
|
|
|
double SmithChartConstantLine::getParam() const
|
|
{
|
|
return param;
|
|
}
|
|
|
|
void SmithChartConstantLine::setParam(double value)
|
|
{
|
|
param = value;
|
|
}
|
|
|
|
void SmithChartConstantLine::setType(const Type &value)
|
|
{
|
|
type = value;
|
|
}
|
|
|
|
SmithChartConstantLine::Type SmithChartConstantLine::getType() const
|
|
{
|
|
return type;
|
|
}
|
|
|
|
static constexpr int rowHeight = 21;
|
|
|
|
QSize SmithChartParamDelegate::sizeHint(const QStyleOptionViewItem &, const QModelIndex &) const
|
|
{
|
|
return QSize(0, rowHeight);
|
|
}
|
|
|
|
QWidget *SmithChartParamDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &, const QModelIndex &index) const
|
|
{
|
|
auto line = static_cast<const SmithChartContantLineModel*>(index.model())->lineFromIndex(index);
|
|
auto editor = new SIUnitEdit(line->getParamUnit(), "pnum kMG", 6);
|
|
editor->setValue(line->getParam());
|
|
editor->setMaximumHeight(rowHeight);
|
|
editor->setParent(parent);
|
|
connect(editor, &SIUnitEdit::valueUpdated, this, &SmithChartParamDelegate::commitData);
|
|
return editor;
|
|
}
|
|
|
|
void SmithChartParamDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
|
|
{
|
|
auto line = ((SmithChartContantLineModel*)model)->lineFromIndex(index);
|
|
auto si = (SIUnitEdit*) editor;
|
|
line->setParam(si->value());
|
|
}
|
|
|
|
QSize SmithChartTypeDelegate::sizeHint(const QStyleOptionViewItem &, const QModelIndex &) const
|
|
{
|
|
return QSize(0, rowHeight);
|
|
}
|
|
|
|
QWidget *SmithChartTypeDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &, const QModelIndex &index) const
|
|
{
|
|
auto line = static_cast<const SmithChartContantLineModel*>(index.model())->lineFromIndex(index);
|
|
auto editor = new QComboBox();
|
|
for(unsigned int i=0;i<(unsigned int)SmithChartConstantLine::Type::Last;i++) {
|
|
editor->addItem(SmithChartConstantLine::TypeToString((SmithChartConstantLine::Type) i));
|
|
}
|
|
editor->setCurrentIndex((int) line->getType());
|
|
connect(editor, qOverload<int>(&QComboBox::currentIndexChanged), [=](int) {
|
|
emit const_cast<SmithChartTypeDelegate*>(this)->commitData(editor);
|
|
});
|
|
editor->setMaximumHeight(rowHeight);
|
|
editor->setParent(parent);
|
|
return editor;
|
|
}
|
|
|
|
void SmithChartTypeDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
|
|
{
|
|
auto line = ((SmithChartContantLineModel*)model)->lineFromIndex(index);
|
|
auto *cb = (QComboBox*) editor;
|
|
line->setType((SmithChartConstantLine::Type) cb->currentIndex());
|
|
// parameter unit may have changed, update model
|
|
auto paramIndex = model->index(index.row(), SmithChartContantLineModel::ColIndexParam);
|
|
emit model->dataChanged(paramIndex, paramIndex);
|
|
}
|
|
|
|
SmithChartContantLineModel::SmithChartContantLineModel(TraceSmithChart &chart, QObject *parent)
|
|
: chart(chart)
|
|
{
|
|
Q_UNUSED(parent);
|
|
}
|
|
|
|
int SmithChartContantLineModel::rowCount(const QModelIndex &parent) const
|
|
{
|
|
Q_UNUSED(parent);
|
|
return chart.constantLines.size();
|
|
}
|
|
|
|
int SmithChartContantLineModel::columnCount(const QModelIndex &parent) const
|
|
{
|
|
Q_UNUSED(parent);
|
|
return ColIndexLast;
|
|
}
|
|
|
|
QVariant SmithChartContantLineModel::data(const QModelIndex &index, int role) const
|
|
{
|
|
if (!index.isValid())
|
|
return QVariant();
|
|
|
|
if ((unsigned int) index.row() >= chart.constantLines.size())
|
|
return QVariant();
|
|
|
|
auto line = chart.constantLines[index.row()];
|
|
switch(index.column()) {
|
|
case ColIndexColor:
|
|
if (role == Qt::BackgroundColorRole) {
|
|
return line.getColor();
|
|
}
|
|
break;
|
|
case ColIndexType:
|
|
if (role == Qt::DisplayRole) {
|
|
return SmithChartConstantLine::TypeToString(line.getType());
|
|
}
|
|
break;
|
|
case ColIndexParam:
|
|
if (role == Qt::DisplayRole) {
|
|
return Unit::ToString(line.getParam(), line.getParamUnit(), "pnum kMG", 6);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return QVariant();
|
|
}
|
|
|
|
QVariant SmithChartContantLineModel::headerData(int section, Qt::Orientation orientation, int role) const
|
|
{
|
|
Q_UNUSED(orientation);
|
|
if(role == Qt::DisplayRole) {
|
|
switch(section) {
|
|
case ColIndexColor: return "Color";
|
|
case ColIndexType: return "Type";
|
|
case ColIndexParam: return "Parameter";
|
|
}
|
|
}
|
|
return QVariant();
|
|
}
|
|
|
|
Qt::ItemFlags SmithChartContantLineModel::flags(const QModelIndex &index) const
|
|
{
|
|
Qt::ItemFlags flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
|
|
switch(index.column()) {
|
|
case ColIndexType:
|
|
case ColIndexParam:
|
|
flags |= Qt::ItemIsEditable;
|
|
break;
|
|
}
|
|
return flags;
|
|
}
|
|
|
|
SmithChartConstantLine* SmithChartContantLineModel::lineFromIndex(const QModelIndex &index) const
|
|
{
|
|
if(index.isValid() && index.row() < (int) chart.constantLines.size()) {
|
|
return &chart.constantLines[index.row()];
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|