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polygon.cxx
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polygon.cxx
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/*ckwg +29
* Copyright 2016 by Kitware, Inc.
* 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 name of Kitware, Inc. nor the names of any 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 AUTHORS 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.
*/
/**
* \file
* \brief vxl polygon conversion functions
*/
#include "polygon.h"
#include <stdexcept>
namespace kwiver {
namespace arrows {
namespace vxl {
// ------------------------------------------------------------------
kwiver::vital::polygon_sptr
vxl_to_vital( const vgl_polygon< double >& poly )
{
if ( poly.num_sheets() != 1 )
{
throw std::out_of_range( "vgl_polygon is not a single sheet polygon." );
}
// Convert vxl polygon to vital format
auto local_poly = std::make_shared< kwiver::vital::polygon > ();
const vgl_polygon< double >::sheet_t& sheet = poly[0];
const size_t limit = sheet.size();
for ( size_t i = 0; i < limit; ++i )
{
auto pt = sheet[i];
local_poly->push_back( pt.x(), pt.y() );
} // end for
return local_poly;
}
// ------------------------------------------------------------------
std::shared_ptr< vgl_polygon< double > >
vital_to_vxl( kwiver::vital::polygon_sptr poly )
{
// Convert vital type polygon to VXL format
auto local_poly = std::make_shared< vgl_polygon< double > > ( 1 );
size_t limit = poly->num_vertices();
for ( size_t i = 0; i < limit; ++i )
{
auto pt = poly->at( i );
local_poly->push_back( pt[0], pt[1] );
} // end for
return local_poly;
}
}
}
} // end namespace