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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DRENDER_CAMERALENS_P_H
#define QT3DRENDER_CAMERALENS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <Qt3DCore/private/qcomponent_p.h>
#include "qcameralens.h"
#include <Qt3DCore/qscenepropertychange.h>
#include <QtGui/qmatrix4x4.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
class QCameraLensPrivate : public Qt3DCore::QComponentPrivate
{
public:
QCameraLensPrivate();
inline void updateProjectionMatrix()
{
switch (m_projectionType) {
case QCameraLens::OrthographicProjection:
updateOrthographicProjection();
break;
case QCameraLens::PerspectiveProjection:
updatePerpectiveProjection();
break;
case QCameraLens::FrustumProjection:
updateFrustumProjection();
break;
}
}
Q_DECLARE_PUBLIC(QCameraLens)
QCameraLens::ProjectionType m_projectionType;
float m_nearPlane;
float m_farPlane;
float m_fieldOfView;
float m_aspectRatio;
float m_left;
float m_right;
float m_bottom;
float m_top;
mutable QMatrix4x4 m_projectionMatrix;
private:
inline void updatePerpectiveProjection()
{
Q_Q(QCameraLens);
m_projectionMatrix.setToIdentity();
m_projectionMatrix.perspective(m_fieldOfView, m_aspectRatio, m_nearPlane, m_farPlane);
Q_EMIT q->projectionMatrixChanged(m_projectionMatrix);
}
inline void updateOrthographicProjection()
{
Q_Q(QCameraLens);
m_projectionMatrix.setToIdentity();
m_projectionMatrix.ortho(m_left, m_right, m_bottom, m_top, m_nearPlane, m_farPlane);
Q_EMIT q->projectionMatrixChanged(m_projectionMatrix);
}
inline void updateFrustumProjection()
{
Q_Q(QCameraLens);
m_projectionMatrix.setToIdentity();
m_projectionMatrix.frustum(m_left, m_right, m_bottom, m_top, m_nearPlane, m_farPlane);
Q_EMIT q->projectionMatrixChanged(m_projectionMatrix);
}
};
} // namespace Qt3DRender
QT_END_NAMESPACE
#endif // QT3DRENDER_CAMERALENS_P_H
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