/usr/include/mapnik/agg/agg_vcgen_bspline.h is in libmapnik-dev 2.2.0+ds1-6build2.
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 - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_BSPLINE_INCLUDED
#define AGG_VCGEN_BSPLINE_INCLUDED
#include "agg_basics.h"
#include "agg_array.h"
#include "agg_bspline.h"
namespace agg
{
//==========================================================vcgen_bspline
class vcgen_bspline
{
enum status_e
{
initial,
ready,
polygon,
end_poly,
stop
};
public:
typedef pod_bvector<point_d, 6> vertex_storage;
vcgen_bspline();
void interpolation_step(double v) { m_interpolation_step = v; }
double interpolation_step() const { return m_interpolation_step; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_bspline(const vcgen_bspline&);
const vcgen_bspline& operator = (const vcgen_bspline&);
vertex_storage m_src_vertices;
bspline m_spline_x;
bspline m_spline_y;
double m_interpolation_step;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
double m_cur_abscissa;
double m_max_abscissa;
};
}
#endif
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