/usr/include/agg2/agg_conv_concat.h is in libagg-dev 2.5+dfsg1-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Anti-Grain Geometry (AGG) - Version 2.5
// A high quality rendering engine for C++
// Copyright (C) 2002-2006 Maxim Shemanarev
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://antigrain.com
//
// AGG is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// AGG is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with AGG; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CONCAT_INCLUDED
#define AGG_CONV_CONCAT_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=============================================================conv_concat
// Concatenation of two paths. Usually used to combine lines or curves
// with markers such as arrowheads
template<class VS1, class VS2> class conv_concat
{
public:
conv_concat(VS1& source1, VS2& source2) :
m_source1(&source1), m_source2(&source2), m_status(2) {}
void attach1(VS1& source) { m_source1 = &source; }
void attach2(VS2& source) { m_source2 = &source; }
void rewind(unsigned path_id)
{
m_source1->rewind(path_id);
m_source2->rewind(0);
m_status = 0;
}
unsigned vertex(double* x, double* y)
{
unsigned cmd;
if(m_status == 0)
{
cmd = m_source1->vertex(x, y);
if(!is_stop(cmd)) return cmd;
m_status = 1;
}
if(m_status == 1)
{
cmd = m_source2->vertex(x, y);
if(!is_stop(cmd)) return cmd;
m_status = 2;
}
return path_cmd_stop;
}
private:
conv_concat(const conv_concat<VS1, VS2>&);
const conv_concat<VS1, VS2>&
operator = (const conv_concat<VS1, VS2>&);
VS1* m_source1;
VS2* m_source2;
int m_status;
};
}
#endif
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