libpdal-dev 1.4.0-1+b1 / usr / include / pdal / io / FauxReader.hpp

/******************************************************************************
* Copyright (c) 2011, Michael P. Gerlek (mpg@flaxen.com)
*
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#pragma once

#include <pdal/plugin.hpp>
#include <pdal/Reader.hpp>

extern "C" int32_t FauxReader_ExitFunc();
extern "C" PF_ExitFunc FauxReader_InitPlugin();

namespace pdal
{

enum class Mode
{
    Constant,
    Random,
    Ramp,
    Uniform,
    Normal
};

inline std::istream& operator>>(std::istream& in, Mode& m)
{
    std::string s;

    in >> s;
    s = Utils::tolower(s);
    if (s == "constant")
        m = Mode::Constant;
    else if (s == "random")
        m = Mode::Random;
    else if (s == "ramp")
        m = Mode::Ramp;
    else if (s  == "uniform")
        m = Mode::Uniform;
    else if (s == "normal")
        m = Mode::Normal;
    else
        in.setstate(std::ios::failbit);
    return in;
}

inline std::ostream& operator<<(std::ostream& out, const Mode& m)
{
    switch (m)
    {
    case Mode::Constant:
        out << "Constant";
    case Mode::Random:
        out << "Random";
    case Mode::Ramp:
        out << "Ramp";
    case Mode::Uniform:
        out << "Uniform";            
    case Mode::Normal:
        out << "Normal";
    }
    return out;
}

// The FauxReader doesn't read from disk, but instead just makes up data for its
// points.  The reader is constructed with a given bounding box and a given
// number of points.
//
// This reader knows about these fields (Dimensions):
//    X,Y,Z - floats
//    Time  - uint64
//    ReturnNumber (optional) - uint8
//    NumberOfReturns (optional) - uint8
//
// It supports a few modes:
//   - "random" generates points that are randomly distributed within the
//     given bounding box
//   - "constant" generates its points to always be at the minimum of the
//      bounding box
//   - "ramp" generates its points as a linear ramp from the minimum of the
//     bbox to the maximum
//   - "uniform" generates points that are uniformly distributed within the
//     given bounding box
//   - "normal" generates points that are normally distributed with a given
//     mean and standard deviation in each of the XYZ dimensions
// In all these modes, however, the Time field is always set to the point
// number.
//
// ReturnNumber and NumberOfReturns are not included by default, but can be
// activated by passing a numeric value as "number_of_returns" to the
// reader constructor.
//
class PDAL_DLL FauxReader : public Reader
{
public:
    FauxReader()
    {}

    static void * create();
    static int32_t destroy(void *);
    std::string getName() const;

private:
    Mode m_mode;
    BOX3D m_bounds;
    double m_mean_x;
    double m_mean_y;
    double m_mean_z;
    double m_stdev_x;
    double m_stdev_y;
    double m_stdev_z;
    double m_delX;
    double m_delY;
    double m_delZ;
    uint64_t m_time;
    int m_numReturns;
    int m_returnNum;
    point_count_t m_index;
    uint32_t m_seed;

    virtual void addArgs(ProgramArgs& args);
    virtual void initialize();
    virtual void addDimensions(PointLayoutPtr layout);
    virtual void ready(PointTableRef table);
    virtual bool processOne(PointRef& point);
    virtual point_count_t read(PointViewPtr view, point_count_t count);
    virtual bool eof()
        { return false; }

    FauxReader& operator=(const FauxReader&); // not implemented
    FauxReader(const FauxReader&); // not implemented
};

} // namespace pdal