trackball.h

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/* This software and supporting documentation are distributed by
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 * This software is governed by the CeCILL-B license under
 * French law and abiding by the rules of distribution of free software.
 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL-B license as circulated by CEA, CNRS
 * and INRIA at the following URL "http://www.cecill.info".
 *
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 */
 
 
#ifndef ANATOMIST_WINDOW3D_TRACKBALL_H
#define ANATOMIST_WINDOW3D_TRACKBALL_H
 
 
#include <anatomist/controler/action.h>
#include <aims/resampling/quaternion.h>
#include <qobject.h>
 
namespace aims
{
  class Quaternion;
}
 
 
namespace anatomist
{
 
  class Trackball : public Action
  {
  public:
    static Action * creator() ;
 
    Trackball();
    Trackball( const Trackball & a );
    virtual ~Trackball();
 
    virtual std::string name() const;
    QWidget* actionView( QWidget* );
    bool viewableAction() const;
 
    virtual void beginTrackball( int x, int y, int globalX, int globalY );
    virtual void moveTrackball( int x, int y, int globalX, int globalY );
    virtual bool moveTrackballInternal( int x, int y );
    virtual void endTrackball( int x, int y, int globalX, int globalY );
    void setCenter();
    void showRotationCenter();
    virtual aims::Quaternion rotation( int x, int y );
 
  protected:
    static aims::Quaternion initQuaternion( float x1, float y1, float x2,
                                            float y2 );
    static float tbProj2Sphere( float r, float x, float y );
 
    int         _beginx;
    int         _beginy;
    aims::Quaternion _beginquat;
  };
 
 
  class ContinuousTrackball : public QObject, public Trackball
  {
    Q_OBJECT
 
  public:
    static Action * creator() ;
 
    ContinuousTrackball();
    ContinuousTrackball( const ContinuousTrackball & a );
    virtual ~ContinuousTrackball();
 
    virtual std::string name() const;
 
    virtual void beginTrackball( int x, int y, int globalX, int globalY );
    virtual void moveTrackball( int x, int y, int globalX, int globalY );
    void endTrackball( int x, int y, int globalX, int globalY );
    void startOrStop();
    void stop();
 
  public slots:
    void goOn();
 
  private:
    struct Private;
    Private     *d;
  };
 
 
  class KeyFlightAction : public Action
  {
  public:
    static Action* creator() ;
 
    KeyFlightAction();
    KeyFlightAction( const KeyFlightAction & a );
    virtual ~KeyFlightAction();
 
    virtual std::string name() const;
    QWidget* actionView( QWidget* );
    bool viewableAction() const;
    
    void up();
    void down();
    void left();
    void right();
    void spinLeft();
    void spinRight();
    void boost();
    void brake();
    void release();
    void stop();
    void runStep();
    void reverse();
 
    void increaseAngleSpeed();
    void decreaseAngleSpeed();
 
  private:
    float               _angle;
    float               _speed;
    bool                _angleChanged;
    bool                _auto;
    static float        _maxAngle;
    static float        _maxSpeed;
  };
 
}
 
 
#endif