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MainWindow.cpp
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MainWindow.cpp
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#include "MainWindow.h"
#include "ui_MainWindow.h"
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
infoDialog_ = new Info(this);
infoDialog_->ChangeInfo(0, 0.0);
controls3DDialog_ = new Controls3D(this);
eMsg_ = new QErrorMessage(this);
eMsg_->setWindowModality(Qt::WindowModal);
kmeans_alg_ = nullptr;
kmeans_alg3D_ = nullptr;
colors_ = nullptr;
timer_ = new QTimer(this);
timer_->callOnTimeout(this, &MainWindow::Step);
kmeansExecuting_ = false;
playing_ = false;
step_ = 0;
pointStyle_.setShape(QCPScatterStyle::ssDisc);
pointStyle_.setSize(4);
centroidStyle_.setShape(QCPScatterStyle::ssCrossCircle);
centroidStyle_.setSize(pointStyle_.size() + 25);
SetSignals();
SwitchTo2D();
}
void MainWindow::showEvent(QShowEvent *event)
{
QWidget::showEvent(event);
ui->xMinSpinBox->selectAll();
ui->xMinSpinBox->setFocus();
SetGridBounds(-10.0, 10.0, -10.0, 10.0);
QPen originPen(Qt::gray, 1);
ui->plot->xAxis->grid()->setZeroLinePen(originPen);
ui->plot->yAxis->grid()->setZeroLinePen(originPen);
ui->plot->setInteraction(QCP::iRangeDrag, true);
ui->plot->setInteraction(QCP::iRangeZoom, true);
// Cross circle
ui->centroidShapeComboBox->setCurrentIndex(11);
ui->stopButton->setEnabled(false);
ui->backOneButton->setEnabled(false);
}
void MainWindow::SetSignals()
{
connect(ui->createDataButton, &QPushButton::clicked,
this, &MainWindow::GenerateData);
connect(ui->stepButton, &QPushButton::clicked,
this, &MainWindow::Step);
connect(ui->resetButton, &QPushButton::clicked,
this, &MainWindow::Reset);
connect(ui->playButton, &QPushButton::clicked,
this, &MainWindow::PlaySteps);
connect(ui->stopButton, &QPushButton::clicked,
this, &MainWindow::StopPlaying);
connect(ui->playSpeedSpinBox, QOverload<int>::of(&QSpinBox::valueChanged),
this, &MainWindow::ChangePlayTimeout);
connect(ui->pointSizeSpinBox, QOverload<int>::of(&QSpinBox::valueChanged),
this, &MainWindow::PointSizeChanged);
connect(ui->importAction, &QAction::triggered,
this, &MainWindow::ImportData);
connect(ui->infoAction, &QAction::triggered,
this, &MainWindow::ShowInfoDialog);
connect(ui->pointShapeComboBox, &QComboBox::currentTextChanged,
this, &MainWindow::PointShapeChanged);
connect(ui->centroidShapeComboBox, &QComboBox::currentTextChanged,
this, &MainWindow::CentroidShapeChanged);
connect(ui->backOneButton, &QPushButton::clicked,
this, &MainWindow::GoBackwardOneStep);
connect(ui->switch2DAction, &QAction::triggered,
this, &MainWindow::SwitchTo2D);
connect(ui->switch3DAction, &QAction::triggered,
this, &MainWindow::SwitchTo3D);
connect(ui->controls3DAction, &QAction::triggered,
this, &MainWindow::Show3DControls);
connect(controls3DDialog_, &Controls3D::directionClicked,
this, &MainWindow::Change3DEye);
connect(controls3DDialog_, &Controls3D::rotateClicked,
this, &MainWindow::Rotate3D);
}
void MainWindow::PlaySteps()
{
ui->stepButton->setEnabled(false);
ui->playButton->setEnabled(false);
ui->stopButton->setEnabled(true);
ui->resetButton->setEnabled(false);
ui->backOneButton->setEnabled(false);
timer_->start(ui->playSpeedSpinBox->value());
playing_ = true;
}
void MainWindow::ChangePlayTimeout(int timeout)
{
timer_->stop();
if (playing_)
timer_->start(timeout);
}
void MainWindow::StopPlaying()
{
timer_->stop();
playing_ = false;
ui->playButton->setEnabled(true);
ui->stepButton->setEnabled(true);
ui->stopButton->setEnabled(false);
ui->backOneButton->setEnabled(true);
ui->resetButton->setEnabled(true);
}
void MainWindow::EnableControls(bool state)
{
ui->nDataSpinBox->setEnabled(state);
ui->xMinSpinBox->setEnabled(state);
ui->xMaxSpinBox->setEnabled(state);
ui->yMinSpinBox->setEnabled(state);
ui->yMaxSpinBox->setEnabled(state);
ui->createDataButton->setEnabled(state);
ui->kSpinBox->setEnabled(state);
ui->distanceFComboBox->setEnabled(state);
ui->initComboBox->setEnabled(state);
if (mode_ == Mode::ThreeD)
{
ui->zMinSpinBox->setEnabled(state);
ui->zMaxSpinBox->setEnabled(state);
ui->pointShapeComboBox->setEnabled(state);
ui->centroidShapeComboBox->setEnabled(state);
}
}
void MainWindow::ImportData()
{
if (mode_ == Mode::TwoD)
Import2D();
else if (mode_ == Mode::ThreeD)
Import3D();
}
void MainWindow::Import2D()
{
QString filename = QFileDialog::getOpenFileName(this, "Open Data File",
"/home", tr("*.txt"));
qDebug() << "Filename: " << filename;
if (filename.isEmpty())
eMsg_->showMessage("Empty filename, data not set.");
else
{
QFile file(filename);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
{
eMsg_->showMessage("Unable to open data file.");
return;
}
QTextStream in(&file);
QString nText = in.readLine();
QString dimText = in.readLine();
if (dimText.toInt() == 2) Parse2D(in);
file.close();
SetGridBounds(minx_, maxx_, miny_, maxy_);
DefaultPlot2D();
Set2DPairVector(xData_, yData_);
if (kmeans_alg_ == nullptr)
kmeans_alg_ = new kmeans<Pair2D>(ui->kSpinBox->value(), pairs_);
else
{
kmeans_alg_->reset();
kmeans_alg_->setData(pairs_);
}
}
}
void MainWindow::Import3D()
{
setFocus();
QString filename = "";
// QFileDialog dialog(ui->centralwidget, "Open Data File", QDir::home().absolutePath(), tr("*.txt"));
ui->viewWidget->hide();
QFileDialog* dialog = new QFileDialog(ui->viewWidget, "Open Data File", QDir::home().absolutePath(), tr("*.txt"));
dialog->setWindowModality(Qt::ApplicationModal);
dialog->setModal(true);
dialog->setWindowFlags(Qt::WindowStaysOnTopHint);
if (dialog->exec() == QDialog::Accepted)
filename = dialog->selectedFiles().value(0);// QString filename = QFileDialog::getOpenFileName(this, "Open Data File",
// "/home", tr("*.txt"));
ui->viewWidget->show();
ui->viewWidget->setFocus();
qDebug() << "Filename: " << filename;
if (filename.isEmpty())
eMsg_->showMessage("Empty filename, data not set.");
else
{
QFile file(filename);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
{
eMsg_->showMessage("Unable to open data file.");
return;
}
QTextStream in(&file);
QString nText = in.readLine();
QString dimText = in.readLine();
if (dimText.toInt() == 3) Parse3D(in);
file.close();
DefaultPlot3D();
ui->viewWidget->setPoints(xData_, yData_, zData_);
Set3DPairVector(xData_, yData_, zData_);
if (kmeans_alg3D_ == nullptr)
kmeans_alg3D_ = new kmeans<Pair3D>(ui->kSpinBox->value(), pairs3D_);
else
{
kmeans_alg3D_->reset();
kmeans_alg3D_->setData(pairs3D_);
}
}
}
void MainWindow::Parse2D(QTextStream& in)
{
QString line = in.readLine();
QStringList data = line.split(' ');
xData_.clear();
yData_.clear();
maxx_ = data[0].toDouble();
minx_ = data[0].toDouble();
xData_.append(minx_);
maxy_ = data[1].toDouble();
miny_ = data[1].toDouble();
yData_.append(miny_);
double x, y;
while (!in.atEnd())
{
QString line = in.readLine();
QStringList data = line.split(' ');
x = data[0].toDouble();
y = data[1].toDouble();
xData_.append(x);
yData_.append(y);
if (x > maxx_) maxx_ = x;
if (y > maxy_) maxy_ = y;
if (x < minx_) minx_ = x;
if (y < miny_) miny_ = y;
}
}
void MainWindow::Parse3D(QTextStream &in)
{
QString line = in.readLine();
QStringList data = line.split(' ');
xData_.clear();
yData_.clear();
zData_.clear();
maxx_ = data[0].toDouble();
minx_ = data[0].toDouble();
xData_.append(minx_);
maxy_ = data[1].toDouble();
miny_ = data[1].toDouble();
yData_.append(miny_);
maxz_ = data[2].toDouble();
minz_ = data[2].toDouble();
zData_.append(minz_);
double x, y, z;
while (!in.atEnd())
{
QString line = in.readLine();
QStringList data = line.split(' ');
x = data[0].toDouble();
y = data[1].toDouble();
z = data[2].toDouble();
xData_.append(x);
yData_.append(y);
zData_.append(z);
if (x > maxx_) maxx_ = x;
if (y > maxy_) maxy_ = y;
if (z > maxz_) maxz_ = z;
if (x < minx_) minx_ = x;
if (y < miny_) miny_ = y;
if (z < minz_) minz_ = z;
}
}
void MainWindow::DefaultPlot2D()
{
ui->plot->clearGraphs();
if (ui->plot->graphCount() == 0)
ui->plot->addGraph();
QCPGraph* g = ui->plot->graph(0);
g->setData(xData_, yData_);
g->setLineStyle(QCPGraph::lsNone);
g->setScatterStyle(pointStyle_);
ui->plot->replot();
}
void MainWindow::DefaultPlot3D()
{
ui->viewWidget->setPoints(xData_, yData_, zData_);
}
void MainWindow::GenerateData()
{
if (mode_ == Mode::TwoD)
Generate2D();
else if (mode_ == Mode::ThreeD)
Generate3D();
}
void MainWindow::Generate2D()
{
std::random_device rd;
std::mt19937_64 gen(rd());
uDistd xDist(ui->xMinSpinBox->value(), ui->xMaxSpinBox->value());
uDistd yDist(ui->yMinSpinBox->value(), ui->yMaxSpinBox->value());
xData_ = RandomData::Generate(xDist, gen, ui->nDataSpinBox->value());
yData_ = RandomData::Generate(yDist, gen, ui->nDataSpinBox->value());
Set2DPairVector(xData_, yData_);
SetGridBounds(ui->xMinSpinBox->value(), ui->xMaxSpinBox->value(),
ui->yMinSpinBox->value(), ui->yMaxSpinBox->value());
DefaultPlot2D();
}
void MainWindow::Generate3D()
{
std::random_device rd;
std::mt19937_64 gen(rd());
uDistd xDist(ui->xMinSpinBox->value(), ui->xMaxSpinBox->value());
uDistd yDist(ui->yMinSpinBox->value(), ui->yMaxSpinBox->value());
uDistd zDist(ui->zMinSpinBox->value(), ui->zMaxSpinBox->value());
xData_ = RandomData::Generate(xDist, gen, ui->nDataSpinBox->value());
yData_ = RandomData::Generate(yDist, gen, ui->nDataSpinBox->value());
zData_ = RandomData::Generate(zDist, gen, ui->nDataSpinBox->value());
Set3DPairVector(xData_, yData_, zData_);
DefaultPlot3D();
Reset3D();
}
void MainWindow::SetGridBounds(double xMin, double xMax,
double yMin, double yMax)
{
ui->plot->xAxis->setRange(xMin, xMax);
ui->plot->yAxis->setRange(yMin, yMax);
}
void MainWindow::Step()
{
if (mode_ == Mode::TwoD)
Step2D();
else if (mode_ == Mode::ThreeD)
Step3D();
}
void MainWindow::Step2D()
{
if (pairs_.size() == 0)
{
eMsg_->showMessage("Data not initialized. Can't perform kmeans.");
}
else
{
bool degenerate = false;
int k = ui->kSpinBox->value();
if (kmeans_alg_ == nullptr)
kmeans_alg_ = new kmeans<Pair2D>(k, pairs_);
if (!kmeansExecuting_)
{
degenerate = CheckDegenerateCases();
if (!degenerate)
{
kmeansExecuting_ = true;
kmeans_alg_->reset();
kmeans_alg_->setK(k);
kmeans_alg_->setData(pairs_);
SetColorVector(k);
if (mode_ == Mode::ThreeD)
{
QVector<float> colors;
for (int i = 0; i < colors_->size(); i++)
{
colors.append(colors_->at(i).redF());
colors.append(colors_->at(i).greenF());
colors.append(colors_->at(i).blueF());
}
ui->viewWidget->setPointColors(colors);
}
EnableControls(false);
if (ui->initComboBox->currentText() == "Random")
{
QVector<Pair2D> randomCentroids = Pair2D::MakeRandomPairs(k,
FindXMin(), FindXMax(), FindYMin(), FindYMax());
kmeans_alg_->setInitialization(InitializeType::Random);
kmeans_alg_->setRandomCentroids(randomCentroids);
}
if (ui->initComboBox->currentText() == "Kpp")
kmeans_alg_->setInitialization(InitializeType::Kpp);
if (ui->initComboBox->currentText() == "Sample")
kmeans_alg_->setInitialization(InitializeType::Sample);
}
}
if (!degenerate)
{
std::function<double(Pair2D, Pair2D)> distF;
if (ui->distanceFComboBox->currentText() == "L1")
distF = Pair2D::L1Distance;
else
distF = Pair2D::EuclideanDistance;
if (step_)
{
CopyLastStep();
if (!playing_)
ui->backOneButton->setEnabled(true);
}
bool stepSuccessful;
int stepValue = ui->stepSpinBox->value();
if (stepValue == 1)
stepSuccessful = kmeans_alg_->step(distF);
else
stepSuccessful = kmeans_alg_->step(distF, stepValue);
if (!stepSuccessful)
{
infoDialog_->ChangeInfo(step_, kmeans_alg_->getEnergy(),
kmeans_alg_->stopReason);
StopPlaying();
}
else
{
step_++;
Set2DGraphData();
infoDialog_->ChangeInfo(step_, kmeans_alg_->getEnergy());
}
}
}
}
void MainWindow::Step3D()
{
if (pairs3D_.size() == 0)
{
eMsg_->showMessage("Data not initialized. Can't perform kmeans.");
}
else
{
bool degenerate = false;
int k = ui->kSpinBox->value();
if (kmeans_alg3D_ == nullptr)
kmeans_alg3D_ = new kmeans<Pair3D>(k, pairs3D_);
if (!kmeansExecuting_)
{
degenerate = CheckDegenerateCases();
if (!degenerate)
{
kmeansExecuting_ = true;
kmeans_alg3D_->reset();
kmeans_alg3D_->setData(pairs3D_);
kmeans_alg3D_->setK(k);
SetColorVector(k);
QVector<float> colors;
for (int i = 0; i < colors_->size(); i++)
{
colors.append(colors_->at(i).redF());
colors.append(colors_->at(i).greenF());
colors.append(colors_->at(i).blueF());
}
ui->viewWidget->setPointColors(colors);
EnableControls(false);
if (ui->initComboBox->currentText() == "Random")
{
QVector<Pair3D> randomCentroids = Pair3D::MakeRandomPairs(k,
FindXMin(), FindXMax(), FindYMin(), FindYMax(),
FindZMin(), FindZMax());
kmeans_alg3D_->setInitialization(InitializeType::Random);
kmeans_alg3D_->setRandomCentroids(randomCentroids);
}
if (ui->initComboBox->currentText() == "Kpp")
kmeans_alg3D_->setInitialization(InitializeType::Kpp);
if (ui->initComboBox->currentText() == "Sample")
kmeans_alg3D_->setInitialization(InitializeType::Sample);
}
}
if (!degenerate)
{
std::function<double(Pair3D, Pair3D)> distF;
if (ui->distanceFComboBox->currentText() == "L1")
distF = Pair3D::L1Distance;
else
distF = Pair3D::EuclideanDistance;
if (step_)
{
CopyLastStep();
if (!playing_)
ui->backOneButton->setEnabled(true);
}
bool stepSuccessful;
int stepValue = ui->stepSpinBox->value();
if (stepValue == 1)
stepSuccessful = kmeans_alg3D_->step(distF);
else
stepSuccessful = kmeans_alg3D_->step(distF, stepValue);
if (!stepSuccessful)
{
infoDialog_->ChangeInfo(step_, kmeans_alg3D_->getEnergy(),
kmeans_alg3D_->stopReason);
StopPlaying();
}
else
{
step_++;
Set3DGraphData();
infoDialog_->ChangeInfo(step_, kmeans_alg3D_->getEnergy());
}
}
}
}
void MainWindow::GoBackwardOneStep()
{
step_--;
ui->backOneButton->setEnabled(false);
if (mode_ == Mode::TwoD)
{
PairBuckets assignedPairs = GetPairBuckets(assignmentsBackward_);
DrawData(centroidsBackward_, assignedPairs);
kmeans_alg_->centroids() = centroidsBackward_;
kmeans_alg_->setIgnoreSameAssignments(true);
}
if (mode_ == Mode::ThreeD)
{
QVector<float> centroidPoints, centroidColors, colors;
for (int i = 0; i < assignmentsBackward_.size(); i++)
{
colors.append(colors_->at(assignmentsBackward_[i]).redF());
colors.append(colors_->at(assignmentsBackward_[i]).greenF());
colors.append(colors_->at(assignmentsBackward_[i]).blueF());
} for (int i = 0; i < assignmentsBackward_.size(); i++)
{
colors.append(colors_->at(assignmentsBackward_[i]).redF());
colors.append(colors_->at(assignmentsBackward_[i]).greenF());
colors.append(colors_->at(assignmentsBackward_[i]).blueF());
}
ui->viewWidget->setPointColors(colors);
for (int i = 0; i < centroids3DBackward_.size(); i++)
{
centroidPoints.append(centroids3DBackward_.at(i)[0]);
centroidPoints.append(centroids3DBackward_.at(i)[1]);
centroidPoints.append(centroids3DBackward_.at(i)[2]);
centroidColors.append(colors_->at(i).redF());
centroidColors.append(colors_->at(i).greenF());
centroidColors.append(colors_->at(i).blueF());
}
ui->viewWidget->setCentroidPoints(centroidPoints);
ui->viewWidget->setCentroidColors(centroidColors);
kmeans_alg3D_->setIgnoreSameAssignments(true);
}
infoDialog_->ChangeInfo(step_, energyBackward_);
}
void MainWindow::CopyLastStep()
{
if (step_)
{
if (mode_ == Mode::TwoD)
{
centroidsBackward_ = kmeans_alg_->centroids();
assignmentsBackward_ = kmeans_alg_->assignments();
energyBackward_ = kmeans_alg_->getEnergy();
}
else if (mode_ == Mode::ThreeD)
{
centroids3DBackward_ = kmeans_alg3D_->centroids();
assignmentsBackward_ = kmeans_alg3D_->assignments();
energyBackward_ = kmeans_alg3D_->getEnergy();
}
}
}
void MainWindow::Reset()
{
if (mode_ == Mode::TwoD)
Reset2D();
else if (mode_ == Mode::ThreeD)
Reset3D();
}
void MainWindow::Reset2D()
{
timer_->stop();
DefaultPlot2D();
kmeansExecuting_ = false;
playing_ = false;
EnableControls(true);
ui->stopButton->setEnabled(false);
ui->backOneButton->setEnabled(false);
infoDialog_->ChangeInfo(0, 0.0);
step_ = 0;
}
void MainWindow::Reset3D()
{
timer_->stop();
ui->viewWidget->reset();
DefaultPlot3D();
kmeansExecuting_ = false;
playing_ = false;
EnableControls(true);
ui->stopButton->setEnabled(false);
ui->backOneButton->setEnabled(false);
infoDialog_->ChangeInfo(0, 0.0);
step_ = 0;
ui->viewWidget->setPointSize(ui->pointSizeSpinBox->value());
ui->plot->hide();
ui->viewWidget->show();
ui->viewWidget->setFocus();
ui->switch2DAction->setEnabled(true);
ui->switch3DAction->setEnabled(false);
ui->zBoundsLabel->setEnabled(true);
ui->zMinSpinBox->setEnabled(true);
ui->zMaxSpinBox->setEnabled(true);
ui->xMinSpinBox->setEnabled(true);
ui->xMaxSpinBox->setEnabled(true);
ui->yMinSpinBox->setEnabled(true);
ui->yMaxSpinBox->setEnabled(true);
ui->kSpinBox->setEnabled(true);
ui->pointShapeComboBox->setEnabled(false);
ui->centroidShapeComboBox->setEnabled(false);
}
void MainWindow::PointSizeChanged(int size)
{
if (mode_ == Mode::TwoD)
{
pointStyle_.setSize(size);
centroidStyle_.setSize(size + 25);
if (!playing_)
{
if(kmeansExecuting_)
Set2DGraphData();
else
DefaultPlot2D();
}
}
else if (mode_ == Mode::ThreeD)
ui->viewWidget->setPointSize(size);
}
void MainWindow::PointShapeChanged(QString text)
{
pointStyle_.setShape(GetStyleFromString(text));
if (!playing_)
{
if(kmeansExecuting_)
Set2DGraphData();
else
DefaultPlot2D();
}
}
void MainWindow::CentroidShapeChanged(QString text)
{
centroidStyle_.setShape(GetStyleFromString(text));
if (!playing_)
{
if(kmeansExecuting_)
Set2DGraphData();
else
DefaultPlot2D();
}
}
void MainWindow::Set2DPairVector(QVector<double> x, QVector<double> y)
{
ui->stepButton->setEnabled(true);
ui->resetButton->setEnabled(true);
ui->playButton->setEnabled(true);
pairs_.clear();
for (int i = 0; i < x.size(); i++)
pairs_.append(Pair2D(x[i], y[i]));
}
void MainWindow::Set3DPairVector(QVector<double> x, QVector<double> y,
QVector<double> z)
{
ui->stepButton->setEnabled(true);
ui->resetButton->setEnabled(true);
ui->playButton->setEnabled(true);
pairs3D_.clear();
for (int i = 0; i < x.size(); i++)
pairs3D_.append(Pair3D(x[i], y[i], z[i]));
}
void MainWindow::Set2DGraphData()
{
QVector<Pair2D>& centroids = kmeans_alg_->centroids();
QVector<quint32>& assignments = kmeans_alg_->assignments();
PairBuckets assignedPairs = GetPairBuckets(assignments);
DrawData(centroids, assignedPairs);
}
void MainWindow::Set3DGraphData()
{
QVector<Pair3D>& centroids = kmeans_alg3D_->centroids();
QVector<quint32>& assignments = kmeans_alg3D_->assignments();
QVector<float> centroidPoints, centroidColors, colors;
for (int i = 0; i < assignments.size(); i++)
{
colors.append(colors_->at(assignments[i]).redF());
colors.append(colors_->at(assignments[i]).greenF());
colors.append(colors_->at(assignments[i]).blueF());
}
ui->viewWidget->setPointColors(colors);
for (int i = 0; i < centroids.size(); i++)
{
centroidPoints.append(centroids.at(i)[0]);
centroidPoints.append(centroids.at(i)[1]);
centroidPoints.append(centroids.at(i)[2]);
centroidColors.append(colors_->at(i).redF());
centroidColors.append(colors_->at(i).greenF());
centroidColors.append(colors_->at(i).blueF());
}
ui->viewWidget->setCentroidPoints(centroidPoints);
ui->viewWidget->setCentroidColors(centroidColors);
}
void MainWindow::DrawData(QVector<Pair2D> ¢roids, PairBuckets &assignedPairs)
{
int k = kmeans_alg_->k();
QCustomPlot* plot = ui->plot;
ui->plot->clearGraphs();
for (int i = 0; i < k; i++)
{
plot->addGraph();
QCPGraph* g = plot->graph(i);
g->setData(assignedPairs[i].first, assignedPairs[i].second);
g->setLineStyle(QCPGraph::lsNone);
g->setScatterStyle(pointStyle_);
g->setPen(QPen(colors_->at(i)));
}
for (int i = 0; i < k; i++)
{
plot->addGraph();
QCPGraph* g = plot->graph(i + k);
QVector<double> x, y;
x.append(centroids[i][0]);
y.append(centroids[i][1]);
g->setData(x, y);
g->setLineStyle(QCPGraph::lsNone);
g->setScatterStyle(centroidStyle_);
g->setPen(QPen(colors_->at(i)));
}
plot->replot();
}
void MainWindow::SetColorVector(int k)
{
if (colors_ == nullptr)
colors_ = new QVector<QColor>();
else
colors_->clear();
for (int i = 0; i < k; i++)
colors_->append(QColor::fromHsvF(1.0 / double(k) * double(i), 1.0, 1.0));
}
PairBuckets MainWindow::GetPairBuckets(QVector<quint32> &assignments)
{
PairBuckets assignedPairs(kmeans_alg_->k());
for (int i = 0; i < assignments.size(); i++)
{
assignedPairs[assignments[i]].first.append(xData_[i]);
assignedPairs[assignments[i]].second.append(yData_[i]);
}
return assignedPairs;
}
void MainWindow::ShowInfoDialog()
{
infoDialog_->show();
}
bool MainWindow::CheckDegenerateCases()
{
int k = ui->kSpinBox->value();
int n;
if (mode_ == Mode::TwoD)
n = pairs_.size();
else if (mode_ == Mode::ThreeD)
n = pairs3D_.size();
else
n = 0;
if (k == 0 || k == 1)
{
eMsg_->showMessage("k must be 2 or greater.");
return true;
}
else if (k > n)
{
eMsg_->showMessage("k can't be greater than the number of points.");
return true;
}
else
return false;
}
void MainWindow::Show3DControls()
{
if (mode_ == Mode::ThreeD)
controls3DDialog_->show();
}
void MainWindow::Rotate3D()
{
ui->viewWidget->switchRotate();
}
void MainWindow::Change3DEye(QString direction, float amount)
{
ViewWidget* vw = ui->viewWidget;
float step = float(amount) * 0.01f;
if (direction == "up")
vw->moveEye(0.0f, -step, 0.0f);
else if (direction == "down")
vw->moveEye(0.0f, step, 0.0f);
else if (direction == "left")
vw->moveEye(-step, 0.0f, 0.0f);
else if (direction == "right")
vw->moveEye(step, 0.0f, 0.0f);
}
double MainWindow::FindXMin()
{
if (mode_ == Mode::TwoD)
{
double minX = pairs_[0][0];
for (int i = 1; i < pairs_.size(); i++)
if (pairs_[i][0] < minX)
minX = pairs_[i][0];
return minX;
}
else if (mode_ == Mode::ThreeD)
{
double minX = pairs3D_[0][0];
for (int i = 1; i < pairs3D_.size(); i++)
if (pairs3D_[i][0] < minX)
minX = pairs3D_[i][0];
return minX;
}
else
return 0.0;
}
double MainWindow::FindXMax()
{
if (mode_ == Mode::TwoD)
{
double maxX = pairs_[0][0];
for (int i = 1; i < pairs_.size(); i++)
if (pairs_[i][0] > maxX)
maxX = pairs_[i][0];
return maxX;
}
else if (mode_ == Mode::ThreeD)
{
double maxX = pairs3D_[0][0];
for (int i = 1; i < pairs3D_.size(); i++)
if (pairs3D_[i][0] > maxX)
maxX = pairs3D_[i][0];
return maxX;
}
else
return 0.0;
}
double MainWindow::FindYMin()
{
if (mode_ == Mode::TwoD)
{
double minY = pairs_[0][1];
for (int i = 1; i < pairs_.size(); i++)
if (pairs_[i][1] < minY)
minY = pairs_[i][1];
return minY;
}
else if (mode_ == Mode::ThreeD)
{
double minY = pairs3D_[0][1];
for (int i = 1; i < pairs3D_.size(); i++)
if (pairs3D_[i][1] < minY)
minY = pairs3D_[i][1];
return minY;
}
else
return 0.0;
}
double MainWindow::FindYMax()
{
if (mode_ == Mode::TwoD)
{
double maxY = pairs_[0][1];
for (int i = 1; i < pairs_.size(); i++)
if (pairs_[i][1] > maxY)
maxY = pairs_[i][1];
return maxY;
}
else if (mode_ == Mode::ThreeD)
{
double maxY = pairs3D_[0][1];
for (int i = 1; i < pairs3D_.size(); i++)
if (pairs3D_[i][1] > maxY)
maxY = pairs3D_[i][1];
return maxY;
}
else
return 0.0;
}
double MainWindow::FindZMin()
{
if (mode_ == Mode::TwoD)
{
double minZ = pairs_[0][2];
for (int i = 1; i < pairs_.size(); i++)
if (pairs_[i][2] < minZ)
minZ = pairs_[i][2];
return minZ;
}
else if (mode_ == Mode::ThreeD)
{
double minZ = pairs3D_[0][2];
for (int i = 1; i < pairs3D_.size(); i++)
if (pairs3D_[i][2] < minZ)
minZ = pairs3D_[i][2];
return minZ;
}
else
return 0.0;
}
double MainWindow::FindZMax()
{