camera.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef GRAPHICS_CAMERA_H
#define GRAPHICS_CAMERA_H

#include "src/common/types.h"
#include "src/common/maths.h"
#include "src/common/singleton.h"

namespace Graphics {

class CameraManager : public Common::Singleton<CameraManager> {
public:
    CameraManager();

    const float *getPosition   () const; 
    const float *getOrientation() const; 

    void reset(); 

    void limit(float minX = -FLT_MAX, float minY = -FLT_MAX, float minZ = -FLT_MAX,
               float maxX =  FLT_MAX, float maxY =  FLT_MAX, float maxZ =  FLT_MAX);

    void setPosition   (float x, float y, float z); 
    void setOrientation(float x, float y, float z); 

    void turn(float x, float y, float z); 
    void move(float x, float y, float z); 

    void moveRelative(float x, float y, float z);

    uint32 lastChanged() const; 

    void update();

private:
    uint32 _lastChanged;

    float _minPosition[3];
    float _maxPosition[3];

    float _position[3];    
    float _orientation[3]; 

    float _positionCache[3];    
    float _orientationCache[3]; 

    bool _needUpdate;
};

} // End of namespace Graphics

#define CameraMan Graphics::CameraManager::instance()

#endif // GRAPHICS_CAMERA_H