jankae/LibreVNA
1
0
Fork 0
mirror of https://github.com/jankae/LibreVNA.git synced 2026-04-06 06:53:37 +00:00
Code Issues Projects Releases Packages Wiki Activity

time domain markers

Browse source
This commit is contained in:
Jan Käberich 2020-11-22 21:25:41 +01:00
parent c22d576984
commit 93bf7255c3
17 changed files with 505 additions and 185 deletions
Download patch file Download diff file Expand all files Collapse all files

38
Software/PC_Application/Traces/tracesmithchart.cpp
View file

@ -46,6 +46,39 @@ QPoint TraceSmithChart::dataToPixel(Trace::Data d)
return transform.map(QPoint(d.S.real() * smithCoordMax, -d.S.imag() * smithCoordMax));
}
QPoint TraceSmithChart::markerToPixel(TraceMarker *m)
{
QPoint ret = QPoint();
if(!m->isTimeDomain()) {
if(m->getPosition() >= sweep_fmin && m->getPosition() <= sweep_fmax) {
auto d = m->getData();
ret = transform.map(QPoint(d.real() * smithCoordMax, -d.imag() * smithCoordMax));
}
}
return ret;
}
double TraceSmithChart::nearestTracePoint(Trace *t, QPoint pixel)
{
double closestDistance = numeric_limits<double>::max();
unsigned int closestIndex = 0;
for(unsigned int i=0;i<t->size();i++) {
auto data = t->sample(i);
auto plotPoint = dataToPixel(data);
if (plotPoint.isNull()) {
// destination point outside of currently displayed range
continue;
}
auto diff = plotPoint - pixel;
unsigned int distance = diff.x() * diff.x() + diff.y() * diff.y();
if(distance < closestDistance) {
closestDistance = distance;
closestIndex = i;
}
}
return t->sample(closestIndex).frequency;
}
void TraceSmithChart::draw(QPainter &p) {
auto pref = Preferences::getInstance();
@ -120,7 +153,10 @@ void TraceSmithChart::draw(QPainter &p) {
// only draw markers if the trace has at least one point
auto markers = t.first->getMarkers();
for(auto m : markers) {
if (limitToSpan && (m->getFrequency() < sweep_fmin || m->getFrequency() > sweep_fmax)) {
if (m->isTimeDomain()) {
continue;
}
if (limitToSpan && (m->getPosition() < sweep_fmin || m->getPosition() > sweep_fmax)) {
continue;
}
auto coords = m->getData();