/usr/include/clippoly/nclip.h is in libclippoly-dev 0.11-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | // nclip: a polygon clip library
// Copyright (C) 1993 Klamer Schutte
// klamer@mi.el.utwente.nl
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
// This library 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
// Library General Public License for more details.
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free
// Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#ifndef NCLIP_H
#define NCLIP_H
// Revision 1.5 2005/02/28 17:21:12 klamer
// Changed to have g++ 3.2.3 run silently using g++ -ansi -pedantic -Wall -Wno-unused -Wno-reorder.
// Change use of (libg++) String to ANSI C++ string.
//
// Revision 1.1 1993/10/27 14:43:51 klamer
// Initial revision
//
// Revision 1.1 1993/10/27 14:43:51 klamer
// Initial revision
//
// Revision 1.1 1992/12/07 10:46:35 klamer
// Initial revision
//
#ifdef _GNUG__
#pragma interface
#endif
class Poly;
// class PolyPList;
class Edge;
class DirPolyIter;
// class PolyNodePList;
class Point;
// class NodePEdgeList;
void clip_poly( const Poly &a, const Poly &b,
PolyPList &a_min_b, PolyPList &b_min_a, PolyPList &a_and_b );
int intersect( const Edge &a, const Edge &b, Point &p1, Point &p2 );
int intersect( Poly &a, Poly &b );
void label_shared( Poly & a, const Poly & b );
void make_poly( const Point &point, DirPolyIter &follow,
PolyPList &polylist, NodePEdgeList &done );
int make_poly( const Point &start_point, const Point &point,
DirPolyIter &follow, NodePEdgeList &done,
Poly * new_poly );
void assign_polys( const Poly &a, const Poly &b, const PolyPList &in_list,
PolyPList &a_min_b, PolyPList &b_min_a, PolyPList &a_and_b );
void poly_min_poly( const Poly &a, const Poly &b, PolyPList &a_min_b );
void add_until( Poly *, const Point &, DirPolyIter & );
#endif /* NCLIP_H */
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