/usr/include/pdal/PointTable.hpp is in libpdal-dev 1.4.0-1+b1.
This file is owned by root:root, with mode 0o644.
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* Copyright (c) 2014, Hobu Inc.
*
* All rights reserved.
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* 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
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****************************************************************************/
#pragma once
#include <set>
#include <vector>
#include "pdal/SpatialReference.hpp"
#include "pdal/Dimension.hpp"
#include "pdal/PointContainer.hpp"
#include "pdal/PointLayout.hpp"
#include "pdal/Metadata.hpp"
namespace pdal
{
class PDAL_DLL BasePointTable : public PointContainer
{
friend class PointView;
protected:
BasePointTable(PointLayout& layout) : m_metadata(new Metadata()),
m_layoutRef(layout)
{}
public:
virtual ~BasePointTable()
{}
// Layout operations.
virtual PointLayoutPtr layout() const
{ return &m_layoutRef; }
// Metadata operations.
MetadataNode metadata()
{ return m_metadata->getNode(); }
virtual void finalize()
{ m_layoutRef.finalize(); }
void setSpatialReference(const SpatialReference& srs)
{
clearSpatialReferences();
addSpatialReference(srs);
}
void clearSpatialReferences()
{ m_spatialRefs.clear(); }
void addSpatialReference(const SpatialReference& srs)
{ m_spatialRefs.insert(srs); }
bool spatialReferenceUnique() const
{ return m_spatialRefs.size() == 1; }
SpatialReference spatialReference() const
{
return spatialReferenceUnique() ? anySpatialReference() :
SpatialReference();
}
SpatialReference anySpatialReference() const
{
return m_spatialRefs.size() ?
*m_spatialRefs.begin() : SpatialReference();
}
virtual bool supportsView() const
{ return false; }
MetadataNode privateMetadata(const std::string& name);
MetadataNode toMetadata() const;
private:
// Point data operations.
virtual PointId addPoint() = 0;
protected:
virtual char *getPoint(PointId idx) = 0;
protected:
MetadataPtr m_metadata;
std::set<SpatialReference> m_spatialRefs;
PointLayout& m_layoutRef;
};
typedef BasePointTable& PointTableRef;
typedef BasePointTable const & ConstPointTableRef;
class PDAL_DLL SimplePointTable : public BasePointTable
{
protected:
SimplePointTable(PointLayout& layout) : BasePointTable(layout)
{}
protected:
std::size_t pointsToBytes(point_count_t numPts) const
{ return m_layoutRef.pointSize() * numPts; }
private:
virtual void setFieldInternal(Dimension::Id id, PointId idx,
const void *value);
virtual void getFieldInternal(Dimension::Id id, PointId idx,
void *value) const;
// The number of points in each memory block.
char *getDimension(const Dimension::Detail *d, PointId idx)
{ return getPoint(idx) + d->offset(); }
const char *getDimension(const Dimension::Detail *d, PointId idx) const
{
SimplePointTable *ncThis = const_cast<SimplePointTable *>(this);
return ncThis->getPoint(idx) + d->offset();
}
};
// This provides a context for processing a set of points and allows the library
// to be used to process multiple point sets simultaneously.
class PDAL_DLL PointTable : public SimplePointTable
{
private:
// Point storage.
std::vector<char *> m_blocks;
point_count_t m_numPts;
static const point_count_t m_blockPtCnt = 65536;
public:
PointTable() : SimplePointTable(m_layout), m_numPts(0)
{}
virtual ~PointTable();
virtual bool supportsView() const
{ return true; }
protected:
virtual char *getPoint(PointId idx);
private:
// Point data operations.
virtual PointId addPoint();
PointLayout m_layout;
};
/// A StreamPointTable must provide storage for point data up to its capacity.
/// It must implement getPoint() which returns a pointer to a buffer of
/// sufficient size to contain a point's data. The minimum size required
/// is constant and can be determined by calling pointsToBytes(1) in the
/// finalize() method.
class PDAL_DLL StreamPointTable : public SimplePointTable
{
protected:
StreamPointTable(PointLayout& layout) : SimplePointTable(layout)
{}
public:
/// Called when a new point should be added. Probably a no-op for
/// streaming.
virtual PointId addPoint()
{ return 0; }
/// Called when execute() is started. Typically used to set buffer size
/// when all dimensions are known.
virtual void finalize()
{}
/// Called when the contents of StreamPointTable have been consumed and
/// the point data will be potentially overwritten.
virtual void reset()
{}
virtual point_count_t capacity() const = 0;
};
class PDAL_DLL FixedPointTable : public StreamPointTable
{
public:
FixedPointTable(point_count_t capacity) : StreamPointTable(m_layout),
m_capacity(capacity)
{}
virtual void finalize()
{
if (!m_layout.finalized())
{
BasePointTable::finalize();
m_buf.resize(pointsToBytes(m_capacity + 1));
}
}
point_count_t capacity() const
{ return m_capacity; }
protected:
virtual char *getPoint(PointId idx)
{ return m_buf.data() + pointsToBytes(idx); }
private:
std::vector<char> m_buf;
point_count_t m_capacity;
PointLayout m_layout;
};
} //namespace
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