interface.cpp

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/*****************************************************************************
** Includes
*****************************************************************************/

#include <qapplication.h>
#include <QDialog>
#include <QGLViewer/qglviewer.h>
#include "../include/qglv/gallery.hpp"
#include "ui_gallery_interface.h"

/*****************************************************************************
** UI Derived Classes
*****************************************************************************/

class ViewerInterface : public QDialog, public Ui::Dialog
{
public:
  ViewerInterface() { setupUi(this); }
};

/*****************************************************************************
** Interface
*****************************************************************************/

namespace qglv {
namespace gallery {

// Constructor must call the base class constructor.
Interface::Interface(QWidget *parent)
        : QGLViewer(parent)
{
  restoreStateFromFile();
  help();
}

void Interface::draw()
{
  // Draws a spiral
  const float nbSteps = 200.0;
  glBegin(GL_QUAD_STRIP);
  for (float i=0; i<nbSteps; ++i)
        {
          float ratio = i/nbSteps;
          float angle = 21.0*ratio;
          float c = cos(angle);
          float s = sin(angle);
          float r1 = 1.0 - 0.8*ratio;
          float r2 = 0.8 - 0.8*ratio;
          float alt = ratio - 0.5;
          const float nor = .5;
          const float up = sqrt(1.0-nor*nor);
          glColor3f(1.0-ratio, 0.2f , ratio);
          glNormal3f(nor*c, up, nor*s);
          glVertex3f(r1*c, alt, r1*s);
          glVertex3f(r2*c, alt+0.05, r2*s);
        }
  glEnd();
}

QString Interface::helpString() const
{
  QString text("<h2>I n t e r f a c e</h2>");
  text += "A GUI can be added to a QGLViewer widget using Qt's <i>Designer</i>. Signals and slots ";
  text += "can then be connected to and from the viewer.<br><br>";
  text += "You can install the QGLViewer designer plugin to make the QGLViewer appear as a ";
  text += "standard Qt widget in the Designer's widget tabs. See installation pages for details.";
  return text;
}

} // gallery
} // qglv

/*****************************************************************************
** Main
*****************************************************************************/

int main(int argc, char** argv)
{
  QApplication application(argc,argv);

  ViewerInterface viewer;
  viewer.setWindowTitle("QGL Demo - Interface");
  viewer.show();

  return application.exec();
}