##// END OF EJS Templates
Fix move of an event in another catalogue
Fix move of an event in another catalogue

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VisualizationGraphHelper.cpp
361 lines | 12.4 KiB | text/x-c | CppLexer
/ gui / src / Visualization / VisualizationGraphHelper.cpp
#include "Visualization/VisualizationGraphHelper.h"
#include "Visualization/qcustomplot.h"
#include <Data/DataSeriesUtils.h>
#include <Data/ScalarSeries.h>
#include <Data/SpectrogramSeries.h>
#include <Data/VectorSeries.h>
#include <Variable/Variable.h>
Q_LOGGING_CATEGORY(LOG_VisualizationGraphHelper, "VisualizationGraphHelper")
namespace {
class SqpDataContainer : public QCPGraphDataContainer {
public:
void appendGraphData(const QCPGraphData &data) { mData.append(data); }
};
/**
* Struct used to create plottables, depending on the type of the data series from which to create
* them
* @tparam T the data series' type
* @remarks Default implementation can't create plottables
*/
template <typename T, typename Enabled = void>
struct PlottablesCreator {
static PlottablesMap createPlottables(QCustomPlot &)
{
qCCritical(LOG_DataSeries())
<< QObject::tr("Can't create plottables: unmanaged data series type");
return {};
}
};
PlottablesMap createGraphs(QCustomPlot &plot, int nbGraphs)
{
PlottablesMap result{};
// Creates {nbGraphs} QCPGraph to add to the plot
for (auto i = 0; i < nbGraphs; ++i) {
auto graph = plot.addGraph();
result.insert({i, graph});
}
plot.replot();
return result;
}
/**
* Specialization of PlottablesCreator for scalars
* @sa ScalarSeries
*/
template <typename T>
struct PlottablesCreator<T, typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value> > {
static PlottablesMap createPlottables(QCustomPlot &plot) { return createGraphs(plot, 1); }
};
/**
* Specialization of PlottablesCreator for vectors
* @sa VectorSeries
*/
template <typename T>
struct PlottablesCreator<T, typename std::enable_if_t<std::is_base_of<VectorSeries, T>::value> > {
static PlottablesMap createPlottables(QCustomPlot &plot) { return createGraphs(plot, 3); }
};
/**
* Specialization of PlottablesCreator for spectrograms
* @sa SpectrogramSeries
*/
template <typename T>
struct PlottablesCreator<T,
typename std::enable_if_t<std::is_base_of<SpectrogramSeries, T>::value> > {
static PlottablesMap createPlottables(QCustomPlot &plot)
{
PlottablesMap result{};
result.insert({0, new QCPColorMap{plot.xAxis, plot.yAxis}});
plot.replot();
return result;
}
};
/**
* Struct used to update plottables, depending on the type of the data series from which to update
* them
* @tparam T the data series' type
* @remarks Default implementation can't update plottables
*/
template <typename T, typename Enabled = void>
struct PlottablesUpdater {
static void setPlotYAxisRange(T &, const SqpRange &, QCustomPlot &)
{
qCCritical(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't set plot y-axis range: unmanaged data series type");
}
static void updatePlottables(T &, PlottablesMap &, const SqpRange &, bool)
{
qCCritical(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't update plottables: unmanaged data series type");
}
};
/**
* Specialization of PlottablesUpdater for scalars and vectors
* @sa ScalarSeries
* @sa VectorSeries
*/
template <typename T>
struct PlottablesUpdater<T,
typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value
or std::is_base_of<VectorSeries, T>::value> > {
static void setPlotYAxisRange(T &dataSeries, const SqpRange &xAxisRange, QCustomPlot &plot)
{
auto minValue = 0., maxValue = 0.;
dataSeries.lockRead();
auto valuesBounds = dataSeries.valuesBounds(xAxisRange.m_TStart, xAxisRange.m_TEnd);
auto end = dataSeries.cend();
if (valuesBounds.first != end && valuesBounds.second != end) {
auto rangeValue = [](const auto &value) { return std::isnan(value) ? 0. : value; };
minValue = rangeValue(valuesBounds.first->minValue());
maxValue = rangeValue(valuesBounds.second->maxValue());
}
dataSeries.unlock();
plot.yAxis->setRange(QCPRange{minValue, maxValue});
}
static void updatePlottables(T &dataSeries, PlottablesMap &plottables, const SqpRange &range,
bool rescaleAxes)
{
// For each plottable to update, resets its data
std::map<int, QSharedPointer<SqpDataContainer> > dataContainers{};
for (const auto &plottable : plottables) {
if (auto graph = dynamic_cast<QCPGraph *>(plottable.second)) {
auto dataContainer = QSharedPointer<SqpDataContainer>::create();
graph->setData(dataContainer);
dataContainers.insert({plottable.first, dataContainer});
}
}
dataSeries.lockRead();
// - Gets the data of the series included in the current range
// - Updates each plottable by adding, for each data item, a point that takes x-axis data
// and value data. The correct value is retrieved according to the index of the component
auto subDataIts = dataSeries.xAxisRange(range.m_TStart, range.m_TEnd);
for (auto it = subDataIts.first; it != subDataIts.second; ++it) {
for (const auto &dataContainer : dataContainers) {
auto componentIndex = dataContainer.first;
dataContainer.second->appendGraphData(
QCPGraphData(it->x(), it->value(componentIndex)));
}
}
dataSeries.unlock();
if (!plottables.empty()) {
auto plot = plottables.begin()->second->parentPlot();
if (rescaleAxes) {
plot->rescaleAxes();
}
}
}
};
/**
* Specialization of PlottablesUpdater for spectrograms
* @sa SpectrogramSeries
*/
template <typename T>
struct PlottablesUpdater<T,
typename std::enable_if_t<std::is_base_of<SpectrogramSeries, T>::value> > {
static void setPlotYAxisRange(T &dataSeries, const SqpRange &xAxisRange, QCustomPlot &plot)
{
double min, max;
std::tie(min, max) = dataSeries.yBounds();
if (!std::isnan(min) && !std::isnan(max)) {
plot.yAxis->setRange(QCPRange{min, max});
}
}
static void updatePlottables(T &dataSeries, PlottablesMap &plottables, const SqpRange &range,
bool rescaleAxes)
{
if (plottables.empty()) {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't update spectrogram: no colormap has been associated");
return;
}
// Gets the colormap to update (normally there is only one colormap)
Q_ASSERT(plottables.size() == 1);
auto colormap = dynamic_cast<QCPColorMap *>(plottables.at(0));
Q_ASSERT(colormap != nullptr);
dataSeries.lockRead();
// Processing spectrogram data for display in QCustomPlot
auto its = dataSeries.xAxisRange(range.m_TStart, range.m_TEnd);
// Computes logarithmic y-axis resolution for the spectrogram
auto yData = its.first->y();
auto yResolution = DataSeriesUtils::resolution(yData.begin(), yData.end(), true);
// Generates mesh for colormap
auto mesh = DataSeriesUtils::regularMesh(
its.first, its.second, DataSeriesUtils::Resolution{dataSeries.xResolution()},
yResolution);
dataSeries.unlock();
colormap->data()->setSize(mesh.m_NbX, mesh.m_NbY);
if (!mesh.isEmpty()) {
colormap->data()->setRange(
QCPRange{mesh.m_XMin, mesh.xMax()},
// y-axis range is converted to linear values
QCPRange{std::pow(10, mesh.m_YMin), std::pow(10, mesh.yMax())});
// Sets values
auto index = 0;
for (auto it = mesh.m_Data.begin(), end = mesh.m_Data.end(); it != end; ++it, ++index) {
auto xIndex = index % mesh.m_NbX;
auto yIndex = index / mesh.m_NbX;
colormap->data()->setCell(xIndex, yIndex, *it);
// Makes the NaN values to be transparent in the colormap
if (std::isnan(*it)) {
colormap->data()->setAlpha(xIndex, yIndex, 0);
}
}
}
// Rescales axes
auto plot = colormap->parentPlot();
if (rescaleAxes) {
plot->rescaleAxes();
}
}
};
/**
* Helper used to create/update plottables
*/
struct IPlottablesHelper {
virtual ~IPlottablesHelper() noexcept = default;
virtual PlottablesMap create(QCustomPlot &plot) const = 0;
virtual void setYAxisRange(const SqpRange &xAxisRange, QCustomPlot &plot) const = 0;
virtual void update(PlottablesMap &plottables, const SqpRange &range,
bool rescaleAxes = false) const = 0;
};
/**
* Default implementation of IPlottablesHelper, which takes data series to create/update plottables
* @tparam T the data series' type
*/
template <typename T>
struct PlottablesHelper : public IPlottablesHelper {
explicit PlottablesHelper(std::shared_ptr<T> dataSeries) : m_DataSeries{dataSeries} {}
PlottablesMap create(QCustomPlot &plot) const override
{
return PlottablesCreator<T>::createPlottables(plot);
}
void update(PlottablesMap &plottables, const SqpRange &range, bool rescaleAxes) const override
{
if (m_DataSeries) {
PlottablesUpdater<T>::updatePlottables(*m_DataSeries, plottables, range, rescaleAxes);
}
else {
qCCritical(LOG_VisualizationGraphHelper()) << "Can't update plottables: inconsistency "
"between the type of data series and the "
"type supposed";
}
}
void setYAxisRange(const SqpRange &xAxisRange, QCustomPlot &plot) const override
{
if (m_DataSeries) {
PlottablesUpdater<T>::setPlotYAxisRange(*m_DataSeries, xAxisRange, plot);
}
else {
qCCritical(LOG_VisualizationGraphHelper()) << "Can't update plottables: inconsistency "
"between the type of data series and the "
"type supposed";
}
}
std::shared_ptr<T> m_DataSeries;
};
/// Creates IPlottablesHelper according to the type of data series a variable holds
std::unique_ptr<IPlottablesHelper> createHelper(std::shared_ptr<Variable> variable) noexcept
{
switch (variable->type()) {
case DataSeriesType::SCALAR:
return std::make_unique<PlottablesHelper<ScalarSeries> >(
std::dynamic_pointer_cast<ScalarSeries>(variable->dataSeries()));
case DataSeriesType::SPECTROGRAM:
return std::make_unique<PlottablesHelper<SpectrogramSeries> >(
std::dynamic_pointer_cast<SpectrogramSeries>(variable->dataSeries()));
case DataSeriesType::VECTOR:
return std::make_unique<PlottablesHelper<VectorSeries> >(
std::dynamic_pointer_cast<VectorSeries>(variable->dataSeries()));
default:
// Creates default helper
break;
}
return std::make_unique<PlottablesHelper<IDataSeries> >(nullptr);
}
} // namespace
PlottablesMap VisualizationGraphHelper::create(std::shared_ptr<Variable> variable,
QCustomPlot &plot) noexcept
{
if (variable) {
auto helper = createHelper(variable);
auto plottables = helper->create(plot);
return plottables;
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't create graph plottables : the variable is null");
return PlottablesMap{};
}
}
void VisualizationGraphHelper::setYAxisRange(std::shared_ptr<Variable> variable,
QCustomPlot &plot) noexcept
{
if (variable) {
auto helper = createHelper(variable);
helper->setYAxisRange(variable->range(), plot);
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't set y-axis range of plot: the variable is null");
}
}
void VisualizationGraphHelper::updateData(PlottablesMap &plottables,
std::shared_ptr<Variable> variable,
const SqpRange &dateTime)
{
auto helper = createHelper(variable);
helper->update(plottables, dateTime);
}