174 lines
7.0 KiB
C++
174 lines
7.0 KiB
C++
#include "frmitem.h"
|
|
#include "ui_frmitem.h"
|
|
#include "qdebug.h"
|
|
|
|
frmItem::frmItem(QWidget *parent) : QWidget(parent), ui(new Ui::frmItem)
|
|
{
|
|
ui->setupUi(this);
|
|
this->initForm();
|
|
}
|
|
|
|
frmItem::~frmItem()
|
|
{
|
|
delete ui;
|
|
}
|
|
|
|
void frmItem::showEvent(QShowEvent *)
|
|
{
|
|
dataTimer.start(0);
|
|
}
|
|
|
|
void frmItem::hideEvent(QHideEvent *)
|
|
{
|
|
dataTimer.stop();
|
|
}
|
|
|
|
void frmItem::initForm()
|
|
{
|
|
ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
|
|
QCPGraph *graph = ui->customPlot->addGraph();
|
|
int n = 500;
|
|
double phase = 0;
|
|
double k = 3;
|
|
QVector<double> x(n), y(n);
|
|
for (int i = 0; i < n; ++i) {
|
|
x[i] = i / (double)(n - 1) * 34 - 17;
|
|
y[i] = qExp(-x[i] * x[i] / 20.0) * qSin(k * x[i] + phase);
|
|
}
|
|
|
|
graph->setData(x, y);
|
|
graph->setPen(QPen(Qt::blue));
|
|
graph->rescaleKeyAxis();
|
|
ui->customPlot->yAxis->setRange(-1.45, 1.65);
|
|
ui->customPlot->xAxis->grid()->setZeroLinePen(Qt::NoPen);
|
|
|
|
// add the bracket at the top:
|
|
QCPItemBracket *bracket = new QCPItemBracket(ui->customPlot);
|
|
bracket->left->setCoords(-8, 1.1);
|
|
bracket->right->setCoords(8, 1.1);
|
|
bracket->setLength(13);
|
|
|
|
// add the text label at the top:
|
|
QCPItemText *wavePacketText = new QCPItemText(ui->customPlot);
|
|
wavePacketText->position->setParentAnchor(bracket->center);
|
|
wavePacketText->position->setCoords(0, -10); // move 10 pixels to the top from bracket center anchor
|
|
wavePacketText->setPositionAlignment(Qt::AlignBottom | Qt::AlignHCenter);
|
|
wavePacketText->setText("Wavepacket");
|
|
wavePacketText->setFont(QFont(font().family(), 10));
|
|
|
|
// add the phase tracer (red circle) which sticks to the graph data (and gets updated in bracketDataSlot by timer event):
|
|
phaseTracer = new QCPItemTracer(ui->customPlot);
|
|
phaseTracer->setGraph(graph);
|
|
phaseTracer->setGraphKey((M_PI * 1.5 - phase) / k);
|
|
phaseTracer->setInterpolating(true);
|
|
phaseTracer->setStyle(QCPItemTracer::tsCircle);
|
|
phaseTracer->setPen(QPen(Qt::red));
|
|
phaseTracer->setBrush(Qt::red);
|
|
phaseTracer->setSize(7);
|
|
|
|
// add label for phase tracer:
|
|
QCPItemText *phaseTracerText = new QCPItemText(ui->customPlot);
|
|
phaseTracerText->position->setType(QCPItemPosition::ptAxisRectRatio);
|
|
phaseTracerText->setPositionAlignment(Qt::AlignRight | Qt::AlignBottom);
|
|
phaseTracerText->position->setCoords(1.0, 0.95); // lower right corner of axis rect
|
|
phaseTracerText->setText("Points of fixed\nphase define\nphase velocity vp");
|
|
phaseTracerText->setTextAlignment(Qt::AlignLeft);
|
|
phaseTracerText->setFont(QFont(font().family(), 9));
|
|
phaseTracerText->setPadding(QMargins(8, 0, 0, 0));
|
|
|
|
// add arrow pointing at phase tracer, coming from label:
|
|
QCPItemCurve *phaseTracerArrow = new QCPItemCurve(ui->customPlot);
|
|
phaseTracerArrow->start->setParentAnchor(phaseTracerText->left);
|
|
phaseTracerArrow->startDir->setParentAnchor(phaseTracerArrow->start);
|
|
phaseTracerArrow->startDir->setCoords(-40, 0); // direction 30 pixels to the left of parent anchor (tracerArrow->start)
|
|
phaseTracerArrow->end->setParentAnchor(phaseTracer->position);
|
|
phaseTracerArrow->end->setCoords(10, 10);
|
|
phaseTracerArrow->endDir->setParentAnchor(phaseTracerArrow->end);
|
|
phaseTracerArrow->endDir->setCoords(30, 30);
|
|
phaseTracerArrow->setHead(QCPLineEnding::esSpikeArrow);
|
|
phaseTracerArrow->setTail(QCPLineEnding(QCPLineEnding::esBar, (phaseTracerText->bottom->pixelPosition().y() - phaseTracerText->top->pixelPosition().y()) * 0.85));
|
|
|
|
// add the group velocity tracer (green circle):
|
|
QCPItemTracer *groupTracer = new QCPItemTracer(ui->customPlot);
|
|
groupTracer->setGraph(graph);
|
|
groupTracer->setGraphKey(5.5);
|
|
groupTracer->setInterpolating(true);
|
|
groupTracer->setStyle(QCPItemTracer::tsCircle);
|
|
groupTracer->setPen(QPen(Qt::green));
|
|
groupTracer->setBrush(Qt::green);
|
|
groupTracer->setSize(7);
|
|
|
|
// add label for group tracer:
|
|
QCPItemText *groupTracerText = new QCPItemText(ui->customPlot);
|
|
groupTracerText->position->setType(QCPItemPosition::ptAxisRectRatio);
|
|
groupTracerText->setPositionAlignment(Qt::AlignRight | Qt::AlignTop);
|
|
groupTracerText->position->setCoords(1.0, 0.20); // lower right corner of axis rect
|
|
groupTracerText->setText("Fixed positions in\nwave packet define\ngroup velocity vg");
|
|
groupTracerText->setTextAlignment(Qt::AlignLeft);
|
|
groupTracerText->setFont(QFont(font().family(), 9));
|
|
groupTracerText->setPadding(QMargins(8, 0, 0, 0));
|
|
|
|
// add arrow pointing at group tracer, coming from label:
|
|
QCPItemCurve *groupTracerArrow = new QCPItemCurve(ui->customPlot);
|
|
groupTracerArrow->start->setParentAnchor(groupTracerText->left);
|
|
groupTracerArrow->startDir->setParentAnchor(groupTracerArrow->start);
|
|
groupTracerArrow->startDir->setCoords(-40, 0); // direction 30 pixels to the left of parent anchor (tracerArrow->start)
|
|
groupTracerArrow->end->setCoords(5.5, 0.4);
|
|
groupTracerArrow->endDir->setParentAnchor(groupTracerArrow->end);
|
|
groupTracerArrow->endDir->setCoords(0, -40);
|
|
groupTracerArrow->setHead(QCPLineEnding::esSpikeArrow);
|
|
groupTracerArrow->setTail(QCPLineEnding(QCPLineEnding::esBar, (groupTracerText->bottom->pixelPosition().y() - groupTracerText->top->pixelPosition().y()) * 0.85));
|
|
|
|
// add dispersion arrow:
|
|
QCPItemCurve *arrow = new QCPItemCurve(ui->customPlot);
|
|
arrow->start->setCoords(1, -1.1);
|
|
arrow->startDir->setCoords(-1, -1.3);
|
|
arrow->endDir->setCoords(-5, -0.3);
|
|
arrow->end->setCoords(-10, -0.2);
|
|
arrow->setHead(QCPLineEnding::esSpikeArrow);
|
|
|
|
// add the dispersion arrow label:
|
|
QCPItemText *dispersionText = new QCPItemText(ui->customPlot);
|
|
dispersionText->position->setCoords(-6, -0.9);
|
|
dispersionText->setRotation(40);
|
|
dispersionText->setText("Dispersion with\nvp < vg");
|
|
dispersionText->setFont(QFont(font().family(), 10));
|
|
|
|
// setup a timer that repeatedly calls MainWindow::bracketDataSlot:
|
|
connect(&dataTimer, SIGNAL(timeout()), this, SLOT(bracketDataSlot()));
|
|
}
|
|
|
|
void frmItem::bracketDataSlot()
|
|
{
|
|
double secs = QCPAxisTickerDateTime::dateTimeToKey(QDateTime::currentDateTime());
|
|
|
|
// update data to make phase move:
|
|
int n = 500;
|
|
double phase = secs * 5;
|
|
double k = 3;
|
|
QVector<double> x(n), y(n);
|
|
for (int i = 0; i < n; ++i) {
|
|
x[i] = i / (double)(n - 1) * 34 - 17;
|
|
y[i] = qExp(-x[i] * x[i] / 20.0) * qSin(k * x[i] + phase);
|
|
}
|
|
|
|
ui->customPlot->graph()->setData(x, y);
|
|
phaseTracer->setGraphKey((8 * M_PI + fmod(M_PI * 1.5 - phase, 6 * M_PI)) / k);
|
|
ui->customPlot->replot();
|
|
|
|
// calculate frames per second:
|
|
double key = secs;
|
|
static double lastFpsKey;
|
|
static int frameCount;
|
|
++frameCount;
|
|
if (key - lastFpsKey > 2) { // average fps over 2 seconds
|
|
// ui->statusBar->showMessage(
|
|
// QString("%1 FPS, Total Data points: %2")
|
|
// .arg(frameCount / (key - lastFpsKey), 0, 'f', 0)
|
|
// .arg(ui->customPlot->graph(0)->data()->size())
|
|
// , 0);
|
|
lastFpsKey = key;
|
|
frameCount = 0;
|
|
}
|
|
}
|