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PDALUtils.cpp
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PDALUtils.cpp
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/******************************************************************************
* Copyright (c) 2014, 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,
* 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.
****************************************************************************/
#include <pdal/PDALUtils.hpp>
#include <arbiter/arbiter.hpp>
#include <pdal/KDIndex.hpp>
#include <pdal/PDALUtils.hpp>
#include <pdal/PointView.hpp>
#include <pdal/Options.hpp>
#include <pdal/util/FileUtils.hpp>
#ifndef _WIN32
#include <dlfcn.h>
#endif
using namespace std;
namespace pdal
{
namespace {
void toJSON(const MetadataNode& m, std::ostream& o, int level);
void arrayToJSON(const MetadataNodeList& children, std::ostream& o, int level);
void arrayEltToJSON(const MetadataNode& m, std::ostream& o, int level);
void subnodesToJSON(const MetadataNode& parent, std::ostream& o, int level)
{
const std::string indent(level * 2, ' ');
std::vector<std::string> names = parent.childNames();
o << indent << "{" << endl;
for (auto ni = names.begin(); ni != names.end(); ++ni)
{
MetadataNodeList children = parent.children(*ni);
MetadataNode& node = *children.begin();
if (node.kind() == MetadataType::Array)
{
o << indent << " \"" << node.name() << "\":" << std::endl;
arrayToJSON(children, o, level + 1);
}
else
toJSON(node, o, level + 1);
if (ni != names.rbegin().base() - 1)
o << ",";
o << std::endl;
}
o << indent << "}";
}
void arrayToJSON(const MetadataNodeList& children, std::ostream& o, int level)
{
const std::string indent(level * 2, ' ');
o << indent << "[" << std::endl;
for (auto ci = children.begin(); ci != children.end(); ++ci)
{
const MetadataNode& m = *ci;
arrayEltToJSON(m, o, level + 1);
if (ci != children.rbegin().base() - 1)
o << ",";
o << std::endl;
}
o << indent << "]";
}
void arrayEltToJSON(const MetadataNode& m, std::ostream& o, int level)
{
std::string indent(level * 2, ' ');
std::string value = m.jsonValue();
bool children = m.hasChildren();
// This is a case from XML. In JSON, you can't have two values.
if (!value.empty() && children)
{
o << value << "," << std::endl;
subnodesToJSON(m, o, level);
}
else if (!value.empty())
o << indent << value;
else
subnodesToJSON(m, o, level);
// There is the case where we have a name and no value to handle. What
// should be done?
}
void toJSON(const MetadataNode& m, std::ostream& o, int level)
{
std::string indent(level * 2, ' ');
std::string name = m.name();
std::string value = m.jsonValue();
bool children = m.hasChildren();
if (name.empty())
name = "unnamed";
// This is a case from XML. In JSON, you can't have two values.
if (!value.empty() && children)
{
o << indent << "\"" << name << "\": " << value << "," << std::endl;
o << indent << "\"" << name << "\": ";
subnodesToJSON(m, o, level);
}
else if (!value.empty())
o << indent << "\"" << name << "\": " << value;
else
{
o << indent << "\"" << name << "\":" << std::endl;
subnodesToJSON(m, o, level);
}
// There is the case where we have a name and no value to handle. What
// should be done?
}
} // unnamed namespace
namespace Utils
{
std::string toJSON(const MetadataNode& m)
{
std::ostringstream o;
toJSON(m, o);
return o.str();
}
void toJSON(const MetadataNode& m, std::ostream& o)
{
if (m.name().empty())
pdal::subnodesToJSON(m, o, 0);
else if (m.kind() == MetadataType::Array)
pdal::arrayToJSON(m.children(), o, 0);
else
{
o << "{" << std::endl;
pdal::toJSON(m, o, 1);
o << std::endl;
o << "}";
}
o << std::endl;
}
namespace
{
std::string tempFilename(const std::string& path)
{
const std::string tempdir(arbiter::getTempPath());
const std::string basename(arbiter::getBasename(path));
return arbiter::join(tempdir, basename);
}
// RAII handling of a temp file to make sure file gets deleted.
class TempFile
{
public:
TempFile(const std::string path) : m_filename(path)
{}
virtual ~TempFile()
{ FileUtils::deleteFile(m_filename); }
const std::string& filename()
{ return m_filename; }
private:
std::string m_filename;
};
class ArbiterOutStream : public std::ofstream
{
public:
ArbiterOutStream(const std::string& localPath,
const std::string& remotePath, std::ios::openmode mode) :
std::ofstream(localPath, mode), m_remotePath(remotePath),
m_localFile(localPath)
{}
virtual ~ArbiterOutStream()
{
close();
arbiter::Arbiter a;
a.put(m_remotePath, a.getBinary(m_localFile.filename()));
}
std::string m_remotePath;
TempFile m_localFile;
};
class ArbiterInStream : public std::ifstream
{
public:
ArbiterInStream(const std::string& localPath, const std::string& remotePath,
std::ios::openmode mode) :
m_localFile(localPath)
{
arbiter::Arbiter a;
a.put(localPath, a.getBinary(remotePath));
open(localPath, mode);
}
TempFile m_localFile;
};
} // unnamed namespace
uintmax_t fileSize(const std::string& path)
{
uintmax_t size = 0;
if (isRemote(path))
{
std::unique_ptr<std::size_t> pSize = arbiter::Arbiter().tryGetSize(path);
if (pSize)
size = *pSize;
}
else
size = FileUtils::fileSize(path);
return size;
}
/**
Create a file (may be on a supported remote filesystem).
\param path Path to file to create.
\param asBinary Whether the file should be written in binary mode.
\return Pointer to the created stream, or NULL.
*/
std::ostream *createFile(const std::string& path, bool asBinary)
{
ostream *ofs(nullptr);
if (isRemote(path))
{
arbiter::Arbiter a;
if (!a.hasDriver(path))
return ofs;
try
{
ofs = new ArbiterOutStream(tempFilename(path), path,
asBinary ? ios::out | ios::binary : ios::out);
}
catch (arbiter::ArbiterError&)
{}
if (ofs && !ofs->good())
{
delete ofs;
ofs = nullptr;
}
}
else
ofs = FileUtils::createFile(path, asBinary);
return ofs;
}
/**
Open a file (potentially on a remote filesystem).
\param path Path (potentially remote) of file to open.
\param asBinary Whether the file should be opened binary.
\return Pointer to stream opened for input.
*/
bool isRemote(const std::string& path)
{
const StringList prefixes
{ "s3://", "gs://", "dropbox://", "http://", "https://" };
for (const string& prefix : prefixes)
if (Utils::startsWith(path, prefix))
return true;
return false;
}
std::string fetchRemote(const std::string& path)
{
std::string temp = tempFilename(path);
arbiter::Arbiter a;
a.put(temp, a.getBinary(path));
return temp;
}
std::istream *openFile(const std::string& path, bool asBinary)
{
if (isRemote(path))
{
arbiter::Arbiter a;
if (!a.hasDriver(path))
return nullptr;
try
{
return new ArbiterInStream(tempFilename(path), path,
asBinary ? ios::in | ios::binary : ios::in);
}
catch (arbiter::ArbiterError&)
{
return nullptr;
}
}
return FileUtils::openFile(path, asBinary);
}
/**
Close an output stream.
\param out Stream to close.
*/
void closeFile(std::ostream *out)
{
FileUtils::closeFile(out);
}
/**
Close an input stream.
\param out Stream to close.
*/
void closeFile(std::istream *in)
{
FileUtils::closeFile(in);
}
/**
Check to see if a file exists.
\param path Path to file.
\return Whether the file exists or not.
*/
bool fileExists(const std::string& path)
{
if (isRemote(path))
{
arbiter::Arbiter a;
return (a.hasDriver(path) && a.exists(path));
}
// Arbiter doesn't handle our STDIN hacks.
return FileUtils::fileExists(path);
}
double computeHausdorff(PointViewPtr srcView, PointViewPtr candView)
{
using namespace Dimension;
KD3Index &srcIndex = srcView->build3dIndex();
KD3Index &candIndex = candView->build3dIndex();
double maxDistSrcToCand = std::numeric_limits<double>::lowest();
double maxDistCandToSrc = std::numeric_limits<double>::lowest();
for (PointRef p : *srcView)
{
PointIdList indices(1);
std::vector<double> sqr_dists(1);
candIndex.knnSearch(p, 1, &indices, &sqr_dists);
if (sqr_dists[0] > maxDistSrcToCand)
maxDistSrcToCand = sqr_dists[0];
}
for (PointRef q : *candView)
{
PointIdList indices(1);
std::vector<double> sqr_dists(1);
srcIndex.knnSearch(q, 1, &indices, &sqr_dists);
if (sqr_dists[0] > maxDistCandToSrc)
maxDistCandToSrc = sqr_dists[0];
}
maxDistSrcToCand = std::sqrt(maxDistSrcToCand);
maxDistCandToSrc = std::sqrt(maxDistCandToSrc);
return (std::max)(maxDistSrcToCand, maxDistCandToSrc);
}
std::string dllDir()
{
std::string s;
#ifdef _WIN32
HMODULE hm = NULL;
if (GetModuleHandleEx(
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCSTR)&dllDir, &hm))
{
char path[MAX_PATH];
DWORD cnt = GetModuleFileNameA(hm, path, sizeof(path));
if (cnt > 0 && cnt < MAX_PATH)
s = path;
}
#else
Dl_info info;
if (dladdr((const void *)dllDir, &info))
s = info.dli_fname;
#endif
return FileUtils::getDirectory(s);
}
double computeChamfer(PointViewPtr srcView, PointViewPtr candView)
{
using namespace Dimension;
KD3Index &srcIndex = srcView->build3dIndex();
KD3Index &candIndex = candView->build3dIndex();
double sum1(0.0);
for (PointRef p : *srcView)
{
PointIdList indices(1);
std::vector<double> sqr_dists(1);
candIndex.knnSearch(p, 1, &indices, &sqr_dists);
sum1 += sqr_dists[0];
}
double sum2(0.0);
for (PointRef q : *candView)
{
PointIdList indices(1);
std::vector<double> sqr_dists(1);
srcIndex.knnSearch(q, 1, &indices, &sqr_dists);
sum2 += sqr_dists[0];
}
return sum1 + sum2;
}
} // namespace Utils
} // namespace pdal