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DecimationFilter.cpp
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DecimationFilter.cpp
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/******************************************************************************
* 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,
* 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 "DecimationFilter.hpp"
#include <pdal/PointBuffer.hpp>
namespace pdal
{
static PluginInfo const s_info {
"filters.decimation",
"Rank decimation filter. Keep every Nth point",
"http://pdal.io/stages/filters.decimation.html" };
CREATE_STATIC_PLUGIN(DecimationFilter, Filter, s_info)
std::string DecimationFilter::getName() const { return s_info.name; }
void DecimationFilter::processOptions(const Options& options)
{
m_step = options.getValueOrDefault<uint32_t>("step", 1);
m_offset = options.getValueOrDefault<uint32_t>("offset", 0);
m_limit = options.getValueOrDefault<point_count_t>("limit", 0);
}
PointBufferSet DecimationFilter::run(PointBufferPtr buffer)
{
PointBufferSet pbSet;
PointBufferPtr output = buffer->makeNew();
decimate(*buffer, *output);
pbSet.insert(output);
return pbSet;
}
void DecimationFilter::decimate(PointBuffer& input, PointBuffer& output)
{
PointId last_idx = (m_limit > 0) ? m_limit : input.size();
for (PointId idx = m_offset; idx < last_idx; idx += m_step)
output.appendPoint(input, idx);
}
} // pdal