quaternion_demo.h

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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef EIGEN_QUATERNION_DEMO_H
#define EIGEN_QUATERNION_DEMO_H
 
#include "gpuhelper.h"
#include "camera.h"
#include "trackball.h"
#include <map>
#include <QTimer>
#include <QtGui/QApplication>
#include <QtOpenGL/QGLWidget>
#include <QtGui/QMainWindow>
 
class RenderingWidget : public QGLWidget {
  Q_OBJECT
 
  typedef std::map<float, Frame> TimeLine;
  TimeLine m_timeline;
  Frame lerpFrame(float t);
 
  Frame mInitFrame;
  bool mAnimate;
  float m_alpha;
 
  enum TrackMode { TM_NO_TRACK = 0, TM_ROTATE_AROUND, TM_ZOOM, TM_LOCAL_ROTATE, TM_FLY_Z, TM_FLY_PAN };
 
  enum NavMode { NavTurnAround, NavFly };
 
  enum LerpMode { LerpQuaternion, LerpEulerAngles };
 
  enum RotationMode { RotationStable, RotationStandard };
 
  Camera mCamera;
  TrackMode mCurrentTrackingMode;
  NavMode mNavMode;
  LerpMode mLerpMode;
  RotationMode mRotationMode;
  Vector2i mMouseCoords;
  Trackball mTrackball;
 
  QTimer m_timer;
 
  void setupCamera();
 
  std::vector<Vector3f> mVertices;
  std::vector<Vector3f> mNormals;
  std::vector<int> mIndices;
 
 protected slots:
 
  virtual void animate(void);
  virtual void drawScene(void);
 
  virtual void grabFrame(void);
  virtual void stopAnimation();
 
  virtual void setNavMode(int);
  virtual void setLerpMode(int);
  virtual void setRotationMode(int);
  virtual void resetCamera();
 
 protected:
  virtual void initializeGL();
  virtual void resizeGL(int width, int height);
  virtual void paintGL();
 
  //--------------------------------------------------------------------------------
  virtual void mousePressEvent(QMouseEvent* e);
  virtual void mouseReleaseEvent(QMouseEvent* e);
  virtual void mouseMoveEvent(QMouseEvent* e);
  virtual void keyPressEvent(QKeyEvent* e);
  //--------------------------------------------------------------------------------
 
 public:
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
 
  RenderingWidget();
  ~RenderingWidget() {}
 
  QWidget* createNavigationControlWidget();
};
 
class QuaternionDemo : public QMainWindow {
  Q_OBJECT
 public:
  QuaternionDemo();
 
 protected:
  RenderingWidget* mRenderingWidget;
};
 
#endif  // EIGEN_QUATERNION_DEMO_H