/usr/include/agg2/agg_conv_smooth_poly1.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_SMOOTH_POLY1_INCLUDED
#define AGG_CONV_SMOOTH_POLY1_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_smooth_poly1.h"
#include "agg_conv_adaptor_vcgen.h"
#include "agg_conv_curve.h"
namespace agg
{
//-------------------------------------------------------conv_smooth_poly1
template<class VertexSource>
struct conv_smooth_poly1 :
public conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1>
{
typedef conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1> base_type;
conv_smooth_poly1(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1>(vs)
{
}
void smooth_value(double v) { base_type::generator().smooth_value(v); }
double smooth_value() const { return base_type::generator().smooth_value(); }
private:
conv_smooth_poly1(const conv_smooth_poly1<VertexSource>&);
const conv_smooth_poly1<VertexSource>&
operator = (const conv_smooth_poly1<VertexSource>&);
};
//-------------------------------------------------conv_smooth_poly1_curve
template<class VertexSource>
struct conv_smooth_poly1_curve :
public conv_curve<conv_smooth_poly1<VertexSource> >
{
conv_smooth_poly1_curve(VertexSource& vs) :
conv_curve<conv_smooth_poly1<VertexSource> >(m_smooth),
m_smooth(vs)
{
}
void smooth_value(double v) { m_smooth.generator().smooth_value(v); }
double smooth_value() const { return m_smooth.generator().smooth_value(); }
private:
conv_smooth_poly1_curve(const conv_smooth_poly1_curve<VertexSource>&);
const conv_smooth_poly1_curve<VertexSource>&
operator = (const conv_smooth_poly1_curve<VertexSource>&);
conv_smooth_poly1<VertexSource> m_smooth;
};
}
#endif
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