1 files changed, 0 insertions, 160 deletions
diff --git a/demos/boxes/trackball.cpp b/demos/boxes/trackball.cpp
deleted file mode 100644
index 1bb864ce90..0000000000
--- a/demos/boxes/trackball.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 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 the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "trackball.h"
-#include "scene.h"
-
-//============================================================================//
-//                                  TrackBall                                 //
-//============================================================================//
-
-TrackBall::TrackBall(TrackMode mode)
-    : m_angularVelocity(0)
-    , m_paused(false)
-    , m_pressed(false)
-    , m_mode(mode)
-{
-    m_axis = QVector3D(0, 1, 0);
-    m_rotation = QQuaternion();
-    m_lastTime = QTime::currentTime();
-}
-
-TrackBall::TrackBall(float angularVelocity, const QVector3D& axis, TrackMode mode)
-    : m_axis(axis)
-    , m_angularVelocity(angularVelocity)
-    , m_paused(false)
-    , m_pressed(false)
-    , m_mode(mode)
-{
-    m_rotation = QQuaternion();
-    m_lastTime = QTime::currentTime();
-}
-
-void TrackBall::push(const QPointF& p, const QQuaternion &)
-{
-    m_rotation = rotation();
-    m_pressed = true;
-    m_lastTime = QTime::currentTime();
-    m_lastPos = p;
-    m_angularVelocity = 0.0f;
-}
-
-void TrackBall::move(const QPointF& p, const QQuaternion &transformation)
-{
-    if (!m_pressed)
-        return;
-
-    QTime currentTime = QTime::currentTime();
-    int msecs = m_lastTime.msecsTo(currentTime);
-    if (msecs <= 20)
-        return;
-
-    switch (m_mode) {
-    case Plane:
-        {
-            QLineF delta(m_lastPos, p);
-            m_angularVelocity = 180*delta.length() / (PI*msecs);
-            m_axis = QVector3D(-delta.dy(), delta.dx(), 0.0f).normalized();
-            m_axis = transformation.rotatedVector(m_axis);
-            m_rotation = QQuaternion::fromAxisAndAngle(m_axis, 180 / PI * delta.length()) * m_rotation;
-        }
-        break;
-    case Sphere:
-        {
-            QVector3D lastPos3D = QVector3D(m_lastPos.x(), m_lastPos.y(), 0.0f);
-            float sqrZ = 1 - QVector3D::dotProduct(lastPos3D, lastPos3D);
-            if (sqrZ > 0)
-                lastPos3D.setZ(sqrt(sqrZ));
-            else
-                lastPos3D.normalize();
-
-            QVector3D currentPos3D = QVector3D(p.x(), p.y(), 0.0f);
-            sqrZ = 1 - QVector3D::dotProduct(currentPos3D, currentPos3D);
-            if (sqrZ > 0)
-                currentPos3D.setZ(sqrt(sqrZ));
-            else
-                currentPos3D.normalize();
-
-            m_axis = QVector3D::crossProduct(lastPos3D, currentPos3D);
-            float angle = 180 / PI * asin(sqrt(QVector3D::dotProduct(m_axis, m_axis)));
-
-            m_angularVelocity = angle / msecs;
-            m_axis.normalize();
-            m_axis = transformation.rotatedVector(m_axis);
-            m_rotation = QQuaternion::fromAxisAndAngle(m_axis, angle) * m_rotation;
-        }
-        break;
-    }
-
-
-    m_lastPos = p;
-    m_lastTime = currentTime;
-}
-
-void TrackBall::release(const QPointF& p, const QQuaternion &transformation)
-{
-    // Calling move() caused the rotation to stop if the framerate was too low.
-    move(p, transformation);
-    m_pressed = false;
-}
-
-void TrackBall::start()
-{
-    m_lastTime = QTime::currentTime();
-    m_paused = false;
-}
-
-void TrackBall::stop()
-{
-    m_rotation = rotation();
-    m_paused = true;
-}
-
-QQuaternion TrackBall::rotation() const
-{
-    if (m_paused || m_pressed)
-        return m_rotation;
-
-    QTime currentTime = QTime::currentTime();
-    float angle = m_angularVelocity * m_lastTime.msecsTo(currentTime);
-    return QQuaternion::fromAxisAndAngle(m_axis, angle) * m_rotation;
-}
-