blob: f1e10d30f8d8ce364a0baac8f6276af0bdbc773b [file] [log] [blame]
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the demonstration applications of the Qt Toolkit.
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#ifndef TRACKBALL_H
#define TRACKBALL_H
#include <QtGui>
#include "vector.h"
class TrackBall
{
public:
enum TrackMode
{
Plane,
Sphere,
};
TrackBall(TrackMode mode = Sphere);
TrackBall(float angularVelocity, const gfx::Vector3f& axis, TrackMode mode = Sphere);
// coordinates in [-1,1]x[-1,1]
void push(const QPointF& p, const gfx::Quaternionf &transformation);
void move(const QPointF& p, const gfx::Quaternionf &transformation);
void release(const QPointF& p, const gfx::Quaternionf &transformation);
void start(); // starts clock
void stop(); // stops clock
gfx::Quaternionf rotation() const;
private:
gfx::Quaternionf m_rotation;
gfx::Vector3f m_axis;
float m_angularVelocity;
QPointF m_lastPos;
QTime m_lastTime;
bool m_paused;
bool m_pressed;
TrackMode m_mode;
};
#endif