/usr/include/agg2/agg_trans_single_path.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_TRANS_SINGLE_PATH_INCLUDED
#define AGG_TRANS_SINGLE_PATH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
// See also: agg_trans_single_path.cpp
//
//-------------------------------------------------------trans_single_path
class trans_single_path
{
enum status_e
{
initial,
making_path,
ready
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
trans_single_path();
//--------------------------------------------------------------------
void base_length(double v) { m_base_length = v; }
double base_length() const { return m_base_length; }
//--------------------------------------------------------------------
void preserve_x_scale(bool f) { m_preserve_x_scale = f; }
bool preserve_x_scale() const { return m_preserve_x_scale; }
//--------------------------------------------------------------------
void reset();
void move_to(double x, double y);
void line_to(double x, double y);
void finalize_path();
//--------------------------------------------------------------------
template<class VertexSource>
void add_path(VertexSource& vs, unsigned path_id=0)
{
double x;
double y;
unsigned cmd;
vs.rewind(path_id);
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
if(is_move_to(cmd))
{
move_to(x, y);
}
else
{
if(is_vertex(cmd))
{
line_to(x, y);
}
}
}
finalize_path();
}
//--------------------------------------------------------------------
double total_length() const;
void transform(double *x, double *y) const;
private:
vertex_storage m_src_vertices;
double m_base_length;
double m_kindex;
status_e m_status;
bool m_preserve_x_scale;
};
}
#endif
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