/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2020                                                               *
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#ifndef __OPENSPACE_MODULE_MULTIRESVOLUME___SIMPLETFBRICKSELECTOR___H__
#define __OPENSPACE_MODULE_MULTIRESVOLUME___SIMPLETFBRICKSELECTOR___H__

#include <modules/multiresvolume/rendering/brickselector.h>

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

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() = default;

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

private:
    float spatialSplitPoints(unsigned int brickIndex) const;
    float temporalSplitPoints(unsigned int brickIndex) const;
    float splitPoints(unsigned int brickIndex, BrickSelection::SplitType& splitType);

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

    TSP* _tsp;
    HistogramManager* _histogramManager;
    TransferFunction* _transferFunction;
    std::vector<float> _brickImportances;

    int _memoryBudget;
    int _streamingBudget;
};

} // namespace openspace

#endif // __OPENSPACE_MODULE_MULTIRESVOLUME___SIMPLETFBRICKSELECTOR___H__
