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Chipper.hpp
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Chipper.hpp
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/******************************************************************************
* $Id$
*
* Project: PDAL - http://pdal.org - A BSD library for point cloud data.
* Purpose: PDAL chipper class
* Author: Howard Butler, hobu.inc@gmail.com
*
******************************************************************************
* Copyright (c) 2011, Howard Butler
*
* 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 the Martin Isenburg or Iowa Department
* of Natural Resources 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,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
****************************************************************************/
#ifndef PDAL_CHIPPER_H
#define PDAL_CHIPPER_H
#include <vector>
#include <pdal/Filter.hpp>
#include <pdal/FilterIterator.hpp>
#include <pdal/Bounds.hpp>
#include <pdal/PointBuffer.hpp>
#include <boost/scoped_ptr.hpp>
namespace pdal
{
class Stage;
namespace filters
{
namespace iterators { namespace sequential { class Chipper; }}
class PDAL_DLL Chipper;
namespace chipper
{
enum Direction
{
DIR_X,
DIR_Y,
DIR_NONE
};
class PDAL_DLL PtRef
{
public:
double m_pos;
boost::uint32_t m_ptindex;
boost::uint32_t m_oindex;
bool operator < (const PtRef& pt) const
{
return m_pos < pt.m_pos;
}
};
struct PDAL_DLL RefList
{
public:
std::vector<PtRef> m_vec;
Direction m_dir;
RefList(Direction dir = DIR_NONE) : m_dir(dir)
{}
std::vector<PtRef>::size_type size() const
{
return m_vec.size();
}
void reserve(std::vector<PtRef>::size_type n)
{
m_vec.reserve(n);
}
void resize(std::vector<PtRef>::size_type n)
{
m_vec.resize(n);
}
void push_back(const PtRef& ref)
{
m_vec.push_back(ref);
}
std::vector<PtRef>::iterator begin()
{
return m_vec.begin();
}
std::vector<PtRef>::iterator end()
{
return m_vec.end();
}
PtRef& operator[](boost::uint32_t pos)
{
return m_vec[pos];
}
std::string Dir()
{
if (m_dir == DIR_X)
return "X";
else if (m_dir == DIR_Y)
return "Y";
else
return "NONE";
}
};
class PDAL_DLL Block
{
friend class pdal::filters::Chipper;
friend class pdal::filters::iterators::sequential::Chipper;
private:
RefList *m_list_p;
boost::uint32_t m_left;
boost::uint32_t m_right;
pdal::Bounds<double> m_bounds;
// double m_xmin;
// double m_ymin;
// double m_xmax;
// double m_ymax;
public:
std::vector<boost::uint32_t> GetIDs() const;
pdal::Bounds<double> const& GetBounds() const
{
return m_bounds;
}
void SetBounds(pdal::Bounds<double> const& bounds)
{
m_bounds = bounds;
}
void GetBuffer( StageRandomIterator* iterator,
PointBuffer& buffer,
PointBuffer& one_point,
boost::uint32_t block_id,
Dimension const& dimPoint,
Dimension const& dimBlock) const;
// double GetXmin() const
// { return m_xmin; }
// double GetYmin() const
// { return m_ymin; }
// double GetXmax() const
// { return m_xmax; }
// double GetYmax() const
// { return m_ymax; }
};
} // namespace chipper
class PDAL_DLL Chipper : public pdal::Filter
{
public:
SET_STAGE_NAME("filters.chipper", "Chipper")
Chipper(Stage& prevStage, const Options&);
virtual void initialize();
static Options getDefaultOptions();
static std::vector<Dimension> getDefaultDimensions();
void Chip(PointBuffer& buffer);
std::vector<chipper::Block>::size_type GetBlockCount() const
{
return m_blocks.size();
}
const chipper::Block& GetBlock(std::vector<chipper::Block>::size_type i) const
{
return m_blocks[i];
}
bool supportsIterator(StageIteratorType t) const
{
if (t == StageIterator_Sequential) return true;
return false;
}
inline boost::uint32_t getThreshold() const
{
return m_threshold;
}
pdal::StageSequentialIterator* createSequentialIterator(PointBuffer& buffer) const;
pdal::StageRandomIterator* createRandomIterator(PointBuffer& buffer) const;
private:
void Load(PointBuffer& buffer, chipper::RefList& xvec, chipper::RefList& yvec, chipper::RefList& spare);
void Partition(boost::uint32_t size);
void Split(chipper::RefList& xvec, chipper::RefList& yvec, chipper::RefList& spare);
void DecideSplit(chipper::RefList& v1, chipper::RefList& v2, chipper::RefList& spare,
boost::uint32_t left, boost::uint32_t right);
void Split(chipper::RefList& wide, chipper::RefList& narrow,chipper::RefList& spare,
boost::uint32_t left, boost::uint32_t right);
void FinalSplit(chipper::RefList& wide, chipper::RefList& narrow,
boost::uint32_t pleft, boost::uint32_t pcenter);
void Emit(chipper::RefList& wide, boost::uint32_t widemin, boost::uint32_t widemax,
chipper::RefList& narrow, boost::uint32_t narrowmin, boost::uint32_t narrowmax);
Schema alterSchema(Schema const& schema);
boost::uint32_t m_threshold;
std::vector<chipper::Block> m_blocks;
std::vector<boost::uint32_t> m_partitions;
chipper::RefList m_xvec;
chipper::RefList m_yvec;
chipper::RefList m_spare;
Chipper& operator=(const Chipper&); // not implemented
Chipper(const Chipper&); // not implemented
};
namespace iterators
{
namespace sequential
{
class PDAL_DLL Chipper : public pdal::FilterSequentialIterator
{
public:
Chipper(pdal::filters::Chipper const& filter, PointBuffer& buffer);
~Chipper();
private:
boost::uint64_t skipImpl(boost::uint64_t);
boost::uint32_t readBufferImpl(PointBuffer&);
bool atEndImpl() const;
pdal::filters::Chipper const& m_chipper;
std::size_t m_currentBlockId;
boost::uint64_t m_currentPointCount;
PointBuffer* m_one_point;
Schema const* m_current_read_schema;
StageRandomIterator * m_random_iterator;
};
}
} // iterators::sequential
} // namespace filters
} // namespace liblas
#endif