main.cpp Example File | Qt Data Visualization 5.9

Qt 5.9 | Qt Data Visualization | Rotations Example | main.cpp Example File

Qt 5.9.2 Reference Documentation

# main.cpp Example File

rotations/main.cpp

      /****************************************************************************
      **
      ** 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.
      **
      ** $QT_BEGIN_LICENSE:GPL$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
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      ** Alternatively, this file may be used under the terms of the GNU
      ** General Public License version 3 or (at your option) any later version
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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();
      }