/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/**
 * Copyright (c) 2004-2013  HUBzero Foundation, LLC
 * 
 * Authors:
 *   Insoo Woo <iwoo@purdue.edu>
 */
#ifndef NV_ZINC_BLENDE_RECONSTRUCTOR_H
#define NV_ZINC_BLENDE_RECONSTRUCTOR_H

#include <stdio.h>
#include <ostream>
#include <sstream>
#include <fstream>

#include <vrmath/Vector3f.h>

namespace nv {

class ZincBlendeVolume;

class ZincBlendeReconstructor
{
public:
    /**
     * @brief Load Zinc blende binary volume data and create ZincBlendeVolume with the file
     * @param fileName Zinc blende file name, which data is generated by NEMO-3D
     */
    ZincBlendeVolume *loadFromFile(const char *fileName);

    /**
     * @brief Load Zinc blende binary volume data and create ZincBlendeVolume with the file
     * @param stream Zinc blende binary volume data, which data is generated by NEMO-3D and transferred from nanoscale
     */
    ZincBlendeVolume *loadFromStream(std::istream& stream);

    ZincBlendeVolume *loadFromMemory(const void *dataBlock);

    /**
     * @brief Create ZincBlendVolume with output data of NEMO-3D
     * @param origin the start position of the volume data
     * @param delta  the delta value among atoms
     * @param width  the width of unit cells in the data
     * @param height the height of unit cells in the data
     * @param depth  the depth of unit cells in the data
     * @param data the memory block of output data of NEMO-3D
     */
    ZincBlendeVolume *buildUp(const vrmath::Vector3f& origin, const vrmath::Vector3f& delta,
                              int width, int height, int depth, void *data);

    ZincBlendeVolume *buildUp(const vrmath::Vector3f& origin, const vrmath::Vector3f& delta,
                              int width, int height, int depth,
                              int datacount, double emptyvalue, void *data);

    /**
     * @brief Return a singleton instance
     */
    static ZincBlendeReconstructor *getInstance();

private:
    ZincBlendeReconstructor();

    ~ZincBlendeReconstructor();

    /**
     * @brief Get a line from file. It is used for reading header because header is written in ascii.
     */
    void getLine(std::istream& stream);
    void getLine(const unsigned char*& stream);

    char _buff[255];

    /// A ZincBlendeReconstructor Singleton instance
    static ZincBlendeReconstructor *_instance;
};

}

#endif