graphics/frustrum.h

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/*****************************************************************************
 * This file is part of the Gluon Development Platform
 * Copyright (c) 2010 Arjen Hiemstra <ahiemstra@heimr.nl>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef GLUONGRAPHICS_FRUSTUM_H
#define GLUONGRAPHICS_FRUSTUM_H

#include "gluon_graphics_export.h"

class QRectF;
class QSizeF;
class QMatrix4x4;
class QVector3D;

namespace GluonGraphics
{
    class GLUON_GRAPHICS_EXPORT Frustrum
    {
        public:
            Frustrum();

            virtual ~Frustrum();

            Frustrum( const Frustrum& other );

            Frustrum& operator=( const Frustrum& other );

            QMatrix4x4 projectionMatrix();

            bool containsPoint( const QVector3D& point );

            bool containsSphere( const QVector3D& point, float radius );

            float nearPlane();

            float farPlane();

            QRectF viewPlane();

            void setOrthographic( float left, float right, float bottom, float top, float near, float far );

            void setOrthoAdjusted( const QSizeF& area, float aspect, float near, float far );

            void setPerspective( float fov, float aspect, float near, float far );

            void updateFrustrum( float aspect );

        private:
            class FrustrumPrivate;
            FrustrumPrivate* const d;
    };

}

#endif // GLUONGRAPHICS_FRUSTUM_H

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