/****************************************************************************

   Copyright (C) 2002-2008 Gilles Debunne. All rights reserved.

   This file is part of the QGLViewer library version 2.3.5.

   http://www.libqglviewer.com - contact@libqglviewer.com

   This file may be used under the terms of the GNU General Public License
   versions 2.0 or 3.0 as published by the Free Software Foundation and
   appearing in the LICENSE file included in the packaging of this file.
   In addition, as a special exception, Gilles Debunne gives you certain
   additional rights, described in the file GPL_EXCEPTION in this package.

   libQGLViewer uses dual licensing. Commercial/proprietary software must
   purchase a libQGLViewer Commercial License.

   This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
   WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 *****************************************************************************/

#include <QGLViewer/qglviewer.h>

class Viewer : public QGLViewer {
protected:
  virtual void init();
  virtual void draw();
  virtual QString helpString() const;
  virtual void keyPressEvent(QKeyEvent*);

  void displayText();
  void displayType(const qglviewer::AxisPlaneConstraint::Type type, const int x, const int y, const char c);
  void displayDir(const unsigned short dir, const int x, const int y, const char c);

private:
  int transDir;
  int rotDir;

  static qglviewer::AxisPlaneConstraint::Type
  nextTranslationConstraintType(const qglviewer::AxisPlaneConstraint::Type& type);
  static qglviewer::AxisPlaneConstraint::Type
  nextRotationConstraintType(const qglviewer::AxisPlaneConstraint::Type& type);

  void changeConstraint();
  qglviewer::AxisPlaneConstraint* constraints[2];
  unsigned short activeConstraint;
};
