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Diffstat (limited to 'demos/qt3d/photobrowser3d/pancontroller.cpp')
| -rw-r--r-- | demos/qt3d/photobrowser3d/pancontroller.cpp | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/demos/qt3d/photobrowser3d/pancontroller.cpp b/demos/qt3d/photobrowser3d/pancontroller.cpp deleted file mode 100644 index 1ed5639b..00000000 --- a/demos/qt3d/photobrowser3d/pancontroller.cpp +++ /dev/null @@ -1,244 +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 QtQuick3D module 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 "pancontroller.h" -#include "qglview.h" -#include "qglcamera.h" -#include "photobrowser3dview.h" - -#include <qmath.h> - -#include <QtGlobal> -#include <QTime> - -class PanControllerPrivate -{ -public: - PanControllerPrivate() - : speed(0.0f) - , angle(0.0f) - , arrowDirection(Qt::NoArrow) - , view(0) - , maxSpeed(4.0f) - , defaultDistance(0.0f) - , panDistance(0.0f) - , panViewAngle(M_PI / 4.0f) // 45 degrees in radians - , animating(false) - , elapsed(0.0f) - { - panTime.start(); - } - - void calculateValues(); - - qreal speed; - qreal angle; - Qt::ArrowType arrowDirection; - QGLView *view; - QTime panTime; - qreal maxSpeed; - qreal defaultDistance; - qreal panDistance; - qreal panViewAngle; - bool animating; - qreal elapsed; -}; - -PanController::PanController(QObject *parent) - : QObject(parent) - , d(new PanControllerPrivate) -{ - QGLView *v = qobject_cast<QGLView*>(parent); - if (v) - d->view = v; -} - -PanController::~PanController() -{ - delete d; -} - -qreal PanController::defaultDistance() const -{ - return d->defaultDistance; -} - -void PanController::setDefaultDistance(qreal dist) -{ - d->defaultDistance = dist; -} - -qreal PanController::panDistance() const -{ - return d->panDistance; -} - -void PanController::setPanDistance(qreal dist) -{ - d->panDistance = dist; -} - -qreal PanController::panViewAngle() const -{ - return d->panViewAngle; -} - -void PanController::setPanViewAngle(qreal angle) -{ - d->panViewAngle = angle; -} - -void PanController::setMaxSpeed(qreal maxSpeed) -{ - d->maxSpeed = maxSpeed; -} - -qreal PanController::maxSpeed() const -{ - return d->maxSpeed; -} - -void PanController::setSpeed(qreal speed) -{ - qreal t = d->panTime.restart(); - if (d->speed != speed) - { - d->speed = speed; - d->angle = speed * d->panViewAngle; - if (!qIsNull(d->speed)) - d->animating = true; - d->elapsed += t; - d->calculateValues(); - emit speedChanged(); - } -} - -qreal PanController::speed() const -{ - return d->speed; -} - -void PanController::pan() -{ - if (d->animating) - { - qreal t = d->panTime.restart(); - d->elapsed += t; - // dont recalculate every single time - // 30ms frame time == 33fps - more than enough - if (d->elapsed > 30) - d->calculateValues(); - - PhotoBrowser3DView *view = qobject_cast<PhotoBrowser3DView*>(parent()); - Q_ASSERT(view); - view->update(); - } -} - -void PanControllerPrivate::calculateValues() -{ - if (view && animating) - { - QGLCamera *cam = view->camera(); - Q_ASSERT(cam); - - QVector3D c = cam->center(); - QVector3D e = cam->eye(); - - if (qFuzzyIsNull(speed)) - { - c.setX(e.x()); - e.setZ(defaultDistance); - } - else - { - // as speed goes from 0 -> 1, eye moves closer to z=0 plane - e.setZ(defaultDistance - (speed * (defaultDistance - panDistance))); - - // the view angle is a direct function of the speed see setSpeed() above - // and as view angle increases we look further along the x-axis - qreal opp = (e.z() - c.z()) * qTan(angle); - - // velocity along the x axis is controlled by speed (a value from 0 -> 1 - // which is a modifier for the maxSpeed, a constant). the velocity gives - // us the incremental change in x for this unit time - qreal dx = (speed * maxSpeed * elapsed); - - if (arrowDirection == Qt::LeftArrow) - { - e.setX(e.x() - dx); - c.setX(e.x() - opp); - } - else if (arrowDirection == Qt::RightArrow) - { - e.setX(e.x() + dx); - c.setX(e.x() + opp); - } - } - cam->setEye(e); - cam->setCenter(c); - } - elapsed = 0; - if (qIsNull(speed)) - animating = false; -} - -Qt::ArrowType PanController::direction() const -{ - return d->arrowDirection; -} - -void PanController::setDirection(Qt::ArrowType arrow) -{ - Q_ASSERT(arrow == Qt::LeftArrow || arrow == Qt::RightArrow); - d->arrowDirection = arrow; -} - -QGLView *PanController::view() const -{ - return d->view; -} - -void PanController::setView(QGLView *view) -{ - d->view = view; -} - |