LineReader.hpp

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/*
 * LineReader.hpp
 *
 *  Created on: Aug 15, 2017
 *      Author: Isaak Mitschke
 */

#ifndef LAS_VEGAS_LINEREADER_HPP
#define LAS_VEGAS_LINEREADER_HPP

#include "DataStruct.hpp"

#include <boost/shared_array.hpp>
#include <exception>
#include <string>

namespace lvr2
{

enum fileType
{
    XYZ,
    XYZRGB,
    XYZN,
    XYZNRGB
};

struct fileAttribut
{
    std::string m_filePath;
    size_t m_filePos;
    size_t m_elementAmount;
    fileType m_fileType;
    size_t m_PointBlockSize;
    bool m_ply;
    bool m_binary;
    size_t m_line_element_amount;
};

struct __attribute__((packed)) xyz
{
    lvr2::coord<float> point;
};

struct __attribute__((packed)) xyzn : xyz
{
    lvr2::coord<float> normal;
};

struct __attribute__((packed)) xyznc : xyzn
{
    lvr2::color<unsigned char> color;
};
struct __attribute__((packed)) xyzc : xyz
{
    lvr2::color<unsigned char> color;
};


class LineReader
{
public:
  LineReader();
  LineReader(std::string filePath);
  LineReader(std::vector<std::string> filePaths);
  void open(std::string filePath);
  void open(std::vector<std::string> filePaths);
  size_t getNumPoints();
  bool getNextPoint(xyznc &point);
  //        boost::shared_array<xyzn> getNextPoints(size_t &return_amount, size_t amount =
  //        1000000); boost::shared_array<xyzc> getNextPoints(size_t &return_amount, size_t amount
  //        = 1000000); boost::shared_array<xyznc> getNextPoints(size_t &return_amount, size_t
  //        amount = 1000000);
  boost::shared_ptr<void> getNextPoints(size_t &return_amount, size_t amount = 1000000);
  fileType getFileType(size_t i);
  fileType getFileType();
  void rewind(size_t i);
  void rewind();
  bool ok();
  bool isPly() { return m_ply; }

  class readException : public std::exception
  {
  public:
    readException(std::string what) : error_msg(what) {}
    virtual const char *what() const throw() { return error_msg.c_str(); }

  private:
    std::string error_msg;
  };

private:
  std::vector<std::string> m_filePaths;
  std::vector<size_t> m_filePos;
  size_t m_elementAmount;
  fileType m_fileType;
  size_t m_PointBlockSize;
  bool m_ply;
  bool m_binary;
  size_t m_line_element_amount;
  size_t m_numFiles;
  size_t m_currentReadFile;
  bool m_openNextFile;
  std::vector<fileAttribut> m_fileAttributes;
};

} // namespace lvr2

#endif // LAS_VEGAS_LINEREADER_H