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SbetReader.cpp
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/******************************************************************************
* Copyright (c) 2014, Peter J. Gadomski ([email protected])
*
* 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 "SbetReader.hpp"
#include "SbetCommon.hpp"
#include <pdal/PointRef.hpp>
#include <pdal/util/FileUtils.hpp>
#define _USE_MATH_DEFINES
#include <math.h>
namespace pdal
{
static StaticPluginInfo const s_info
{
"readers.sbet",
"SBET Reader",
"http://pdal.io/stages/readers.sbet.html",
{ "sbet" }
};
CREATE_STATIC_STAGE(SbetReader, s_info)
std::string SbetReader::getName() const { return s_info.name; }
void SbetReader::addArgs(ProgramArgs& args)
{
args.add("angles_as_degrees", "Convert all angles to degrees", m_anglesAsDegrees, true);
}
void SbetReader::addDimensions(PointLayoutPtr layout)
{
layout->registerDims(sbet::fileDimensions());
}
void SbetReader::ready(PointTableRef)
{
size_t fileSize = FileUtils::fileSize(m_filename);
size_t pointSize = sbet::fileDimensions().size() * sizeof(double);
if (fileSize % pointSize != 0)
throwError("Invalid file size.");
m_numPts = fileSize / pointSize;
m_index = 0;
m_stream.reset(new ILeStream(m_filename));
m_dims = sbet::fileDimensions();
seek(m_index);
}
bool SbetReader::processOne(PointRef& point)
{
auto radiansToDegrees = [](double radians) {
return radians * 180.0 / M_PI;
};
for (auto di = m_dims.begin(); di != m_dims.end(); ++di)
{
double d;
*m_stream >> d;
Dimension::Id dim = *di;
if (m_anglesAsDegrees && sbet::isAngularDimension(dim)) {
d = radiansToDegrees(d);
}
point.setField(dim, d);
}
return (m_stream->good());
}
point_count_t SbetReader::read(PointViewPtr view, point_count_t count)
{
PointId nextId = view->size();
PointId idx = m_index;
point_count_t numRead = 0;
seek(idx);
while (numRead < count && idx < m_numPts)
{
PointRef point = view->point(nextId);
processOne(point);
if (m_cb)
m_cb(*view, nextId);
idx++;
nextId++;
numRead++;
}
m_index = idx;
return numRead;
}
bool SbetReader::eof()
{
return m_index >= m_numPts;
}
void SbetReader::seek(PointId idx)
{
m_stream->seek(idx * sizeof(double) * sbet::fileDimensions().size());
}
} // namespace pdal