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/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Qt Software Information (qt-info@nokia.com) ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** GNU General Public License Usage ** Alternatively, 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 file LICENSE.GPL included in ** the packaging of this file. Please review the following information ** to ensure GNU General Public Licensing requirements will be met: ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special ** exception, Nokia gives you certain additional rights. These rights ** are described in the Nokia Qt GPL Exception version 1.3, included in ** the file GPL_EXCEPTION.txt in this package. ** ** Qt for Windows(R) Licensees ** As a special exception, Nokia, as the sole copyright holder for Qt ** Designer, grants users of the Qt/Eclipse Integration plug-in the ** right for the Qt/Eclipse Integration to link to functionality ** provided by Qt Designer and its related libraries. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at qt-sales@nokia.com. ** ****************************************************************************/ #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
Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt 4.5.0-rc1 |