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pan/zoom for smith chart and polar plot

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This commit is contained in:
Jan Käberich 2022-10-29 22:59:17 +02:00
parent 7889676ac7
commit dfd1abeea5
9 changed files with 189 additions and 71 deletions
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34
Software/PC_Application/LibreVNA-GUI/Traces/tracesmithchart.cpp
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@ -84,7 +84,10 @@ void TraceSmithChart::axisSetupDialog()
ui->zoomFactor->setPrecision(3);
ui->zoomReflection->setValue(edgeReflection);
ui->zoomFactor->setValue(1.0/edgeReflection);
ui->offsetRealAxis->setValue(dx);
ui->offsetRealAxis->setPrecision(4);
ui->offsetRealAxis->setValue(offset.x());
ui->offsetImagAxis->setPrecision(4);
ui->offsetImagAxis->setValue(offset.y());
ui->impedance->setUnit("Ω");
ui->impedance->setPrecision(3);
@ -113,7 +116,10 @@ void TraceSmithChart::axisSetupDialog()
ui->zoomFactor->setValueQuiet(1.0 / edgeReflection);
});
connect(ui->offsetRealAxis, &SIUnitEdit::valueChanged, [=](){
dx = ui->offsetRealAxis->value();
offset = QPointF(ui->offsetRealAxis->value(), offset.y());
});
connect(ui->offsetImagAxis, &SIUnitEdit::valueChanged, [=](){
offset = QPointF(offset.x(), ui->offsetRealAxis->value());
});
connect(ui->impedance, &SIUnitEdit::valueChanged, [=](){
Z0 = ui->impedance->value();
@ -232,17 +238,22 @@ void TraceSmithChart::draw(QPainter &p) {
p.setPen(pen);
for(int i=1;i<Circles * 2;i++) {
auto radius = (double) i / Circles;
drawArc(SmithChartArc(QPointF(1.0 - radius+dx, 0.0), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0 + radius+dx, 0.0), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0 - radius+offset.x(), 0.0+offset.y()), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0 + radius+offset.x(), 0.0+offset.y()), radius, 0, 2*M_PI));
}
p.drawLine(dataToPixel(complex<double>(edgeReflection,0)),dataToPixel(complex<double>(-edgeReflection,0)));
QPointF p1 = QPointF(-100, offset.y());
QPointF p2 = QPointF(100, offset.y());
if(TracePolar::constrainLineToCircle(p1, p2, QPointF(0,0), edgeReflection)) {
// center line visible
p.drawLine(dataToPixel(p1),dataToPixel(p2));
}
constexpr std::array<double, 5> impedanceLines = {10, 25, 50, 100, 250};
for(auto z : impedanceLines) {
z /= Z0;
auto radius = 1.0/z;
drawArc(SmithChartArc(QPointF(1.0+dx, radius), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0+dx, -radius), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0+offset.x(), radius+offset.y()), radius, 0, 2*M_PI));
drawArc(SmithChartArc(QPointF(1.0+offset.x(), -radius+offset.y()), radius, 0, 2*M_PI));
}
// draw custom constant parameter lines
@ -251,6 +262,7 @@ void TraceSmithChart::draw(QPainter &p) {
pen.setCosmetic(true);
p.setPen(pen);
for(auto arc : line.getArcs(Z0)) {
arc.center += offset;
drawArc(arc);
}
}
@ -289,8 +301,8 @@ void TraceSmithChart::draw(QPainter &p) {
}
}
last = dataAddDx(last);
now = dataAddDx(now);
last = dataAddOffset(last);
now = dataAddOffset(now);
// scale to size of smith diagram
QPointF p1 = dataToPixel(last);
@ -325,7 +337,7 @@ void TraceSmithChart::draw(QPainter &p) {
continue;
}
auto coords = m->getData();
coords = dataAddDx(coords);
coords = dataAddOffset(coords);
if (limitToEdge && abs(coords) > edgeReflection) {
// outside of visible area
@ -388,7 +400,7 @@ QString TraceSmithChart::mouseText(QPoint pos)
{
auto dataDx = pixelToData(pos);
if(abs(dataDx) <= edgeReflection) {
auto data = complex<double>(dataDx.real()-dx, dataDx.imag());
auto data = complex<double>(dataDx.real()-offset.x(), dataDx.imag()-offset.y());
data = Z0 * (1.0 + data) / (1.0 - data);
auto ret = Unit::ToString(data.real(), "", " ", 3);
if(data.imag() >= 0) {