main.cpp Example File

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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
  **
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  ** Alternatively, this file may be used under the terms of the GNU
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  ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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  #include "scatterdatamodifier.h"

  #include <QtWidgets/QApplication>
  #include <QtWidgets/QWidget>
  #include <QtWidgets/QHBoxLayout>
  #include <QtWidgets/QVBoxLayout>
  #include <QtWidgets/QPushButton>
  #include <QtWidgets/QSlider>
  #include <QtWidgets/QLabel>
  #include <QtWidgets/QMessageBox>
  #include <QtGui/QScreen>

  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);
      Q3DScatter *graph = new Q3DScatter();
      QWidget *container = QWidget::createWindowContainer(graph);

      if (!graph->hasContext()) {
          QMessageBox msgBox;
          msgBox.setText("Couldn't initialize the OpenGL context.");
          msgBox.exec();
          return -1;
      }

      QSize screenSize = graph->screen()->size();
      container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5));
      container->setMaximumSize(screenSize);
      container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
      container->setFocusPolicy(Qt::StrongFocus);

      QWidget *widget = new QWidget;
      QHBoxLayout *hLayout = new QHBoxLayout(widget);
      QVBoxLayout *vLayout = new QVBoxLayout();
      hLayout->addWidget(container, 1);
      hLayout->addLayout(vLayout);

      widget->setWindowTitle(QStringLiteral("Item rotations example - Magnetic field of the sun"));

      QPushButton *toggleRotationButton = new QPushButton(widget);
      toggleRotationButton->setText(QStringLiteral("Toggle animation"));
      QPushButton *toggleSunButton = new QPushButton(widget);
      toggleSunButton->setText(QStringLiteral("Toggle Sun"));

      QSlider *fieldLinesSlider = new QSlider(Qt::Horizontal, widget);
      fieldLinesSlider->setTickInterval(1);
      fieldLinesSlider->setMinimum(1);
      fieldLinesSlider->setValue(12);
      fieldLinesSlider->setMaximum(128);

      QSlider *arrowsSlider = new QSlider(Qt::Horizontal, widget);
      arrowsSlider->setTickInterval(1);
      arrowsSlider->setMinimum(8);
      arrowsSlider->setValue(16);
      arrowsSlider->setMaximum(32);

      vLayout->addWidget(toggleRotationButton);
      vLayout->addWidget(toggleSunButton);
      vLayout->addWidget(new QLabel(QStringLiteral("Field Lines (1 - 128):")));
      vLayout->addWidget(fieldLinesSlider);
      vLayout->addWidget(new QLabel(QStringLiteral("Arrows per line (8 - 32):")));
      vLayout->addWidget(arrowsSlider, 1, Qt::AlignTop);

      ScatterDataModifier *modifier = new ScatterDataModifier(graph);

      QObject::connect(toggleRotationButton, &QPushButton::clicked, modifier,
                       &ScatterDataModifier::toggleRotation);
      QObject::connect(toggleSunButton, &QPushButton::clicked, modifier,
                       &ScatterDataModifier::toggleSun);
      QObject::connect(fieldLinesSlider, &QSlider::valueChanged, modifier,
                       &ScatterDataModifier::setFieldLines);
      QObject::connect(arrowsSlider, &QSlider::valueChanged, modifier,
                       &ScatterDataModifier::setArrowsPerLine);

      widget->show();
      return app.exec();
  }