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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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights. These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CAMERA_P_H
+#define CAMERA_P_H
+
+#include <QMatrix4x4>
+#include <QVector3D>
+
+namespace Qt3D {
+
+class CameraPrivate
+{
+public:
+ CameraPrivate( Camera *qq )
+ : q_ptr( qq )
+ , m_position( 0.0f, 0.0f, 1.0f )
+ , m_upVector( 0.0f, 1.0f, 0.0f )
+ , m_viewCenter( 0.0f, 0.0f, 0.0f )
+ , m_cameraToCenter( 0.0f, 0.0f, -1.0f )
+ , m_projectionType( Camera::OrthogonalProjection )
+ , m_nearPlane( 0.1f )
+ , m_farPlane( 1024.0f )
+ , m_fieldOfView( 25.0f )
+ , m_aspectRatio( 1.0f )
+ , m_left( -0.5 )
+ , m_right( 0.5f )
+ , m_bottom( -0.5f )
+ , m_top( 0.5f )
+ , m_viewMatrixDirty( true )
+ , m_viewProjectionMatrixDirty( true )
+ , m_syncNeeded( false )
+ {
+ updateOrthogonalProjection();
+ }
+
+ ~CameraPrivate()
+ {
+ }
+
+ inline void updatePerpectiveProjection()
+ {
+ m_projectionMatrix.setToIdentity();
+ m_projectionMatrix.perspective( m_fieldOfView, m_aspectRatio, m_nearPlane, m_farPlane );
+ m_viewProjectionMatrixDirty = true;
+ m_syncNeeded = true;
+ }
+
+ inline void updateOrthogonalProjection()
+ {
+ m_projectionMatrix.setToIdentity();
+ m_projectionMatrix.ortho( m_left, m_right, m_bottom, m_top, m_nearPlane, m_farPlane );
+ m_viewProjectionMatrixDirty = true;
+ m_syncNeeded = true;
+ }
+
+ Q_DECLARE_PUBLIC( Camera )
+
+ Camera *q_ptr;
+
+ QVector3D m_position;
+ QVector3D m_upVector;
+ QVector3D m_viewCenter;
+
+ QVector3D m_cameraToCenter; // The vector from the camera position to the view center
+
+ Camera::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_viewMatrix;
+ mutable QMatrix4x4 m_projectionMatrix;
+ mutable QMatrix4x4 m_viewProjectionMatrix;
+
+ mutable bool m_viewMatrixDirty;
+ mutable bool m_viewProjectionMatrixDirty;
+ mutable bool m_syncNeeded;
+};
+
+}
+
+#endif // CAMERA_P_H