/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2015                                                                    *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
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 * permit persons to whom the Software is furnished to do so, subject to the following   *
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 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
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 ****************************************************************************************/

#ifndef __SIMPLETFBRICKSELECTOR_H__
#define __SIMPLETFBRICKSELECTOR_H__

#include <vector>
#include <modules/multiresvolume/rendering/brickselection.h>
#include <modules/multiresvolume/rendering/brickselector.h>
#include <modules/multiresvolume/rendering/brickcover.h>


namespace openspace {

class TSP;
class HistogramManager;
class TransferFunction;

class SimpleTfBrickSelector : public BrickSelector {
public:
    SimpleTfBrickSelector(TSP* tsp, HistogramManager* hm, TransferFunction* tf, int memoryBudget, int streamingBudget);
    ~SimpleTfBrickSelector();

    virtual bool initialize();

    void selectBricks(int timestep, std::vector<int>& bricks);
    void setMemoryBudget(int memoryBudget);
    void setStreamingBudget(int streamingBudget);
    bool calculateBrickImportances();
 private:

    TSP* _tsp;
    HistogramManager* _histogramManager;
    TransferFunction* _transferFunction;
    std::vector<float> _brickImportances;
    float spatialSplitPoints(unsigned int brickIndex);
    float temporalSplitPoints(unsigned int brickIndex);
    float splitPoints(unsigned int brickIndex, BrickSelection::SplitType& splitType);

    int linearCoords(int x, int y, int z);
    void writeSelection(BrickSelection coveredBricks, std::vector<int>& bricks);

    int _memoryBudget;
    int _streamingBudget;
};

} // namespace openspace

#endif // __SIMPLETFBRICKSELECTOR_H__

