/******************************************************************************
* Copyright (c) 2011, Michael P. Gerlek (mpg@flaxen.com)
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
*     * Redistributions of source code must retain the above copyright
*       notice, this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright
*       notice, this list of conditions and the following disclaimer in
*       the documentation and/or other materials provided
*       with the distribution.
*     * Neither the name of Hobu, Inc. or Flaxen Geo Consulting nor the
*       names of its contributors may be used to endorse or promote
*       products derived from this software without specific prior
*       written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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****************************************************************************/

#pragma once

#include <pdal/Filter.hpp>
#include <pdal/Streamable.hpp>

namespace pdal
{

// we keep only 1 out of every step points; if step=100, we get 1% of the file
class PDAL_DLL DecimationFilter : public Filter, public Streamable
{
public:
    DecimationFilter()
        {}

    std::string getName() const;

private:
    double m_step;
    point_count_t m_offset;
    point_count_t m_limit;
    PointId m_index = 0;
    point_count_t m_kept = 0;

    virtual void addArgs(ProgramArgs& args);
    virtual void initialize();
    void ready(PointTableRef table)
        { m_index = 0; }
    bool processOne(PointRef& point);
    PointViewSet run(PointViewPtr view);
    void decimate(PointView& input, PointView& output);

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

} // pdal
