/usr/include/agg2/agg_span_solid.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_SPAN_SOLID_INCLUDED
#define AGG_SPAN_SOLID_INCLUDED
#include "agg_basics.h"
namespace agg
{
//--------------------------------------------------------------span_solid
template<class ColorT> class span_solid
{
public:
typedef ColorT color_type;
//--------------------------------------------------------------------
void color(const color_type& c) { m_color = c; }
const color_type& color() const { return m_color; }
//--------------------------------------------------------------------
void prepare() {}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
do { *span++ = m_color; } while(--len);
}
private:
color_type m_color;
};
}
#endif
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