109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
// clipper.hxx -- top level routines to take a series of arbitrary areas and
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// produce a tight fitting puzzle pieces that combine to make a
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// tile
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//
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// Written by Curtis Olson, started February 1999.
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//
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// Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifndef _CLIPPER_HXX
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#define _CLIPPER_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <Include/compiler.h>
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// include Generic Polygon Clipping Library
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//
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// http://www.cs.man.ac.uk/aig/staff/alan/software/
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//
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extern "C" {
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#include <gpc.h>
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}
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#include STL_STRING
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#include <vector>
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FG_USING_STD(string);
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FG_USING_STD(vector);
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typedef vector < gpc_polygon * > gpcpoly_container;
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typedef gpcpoly_container::iterator gpcpoly_iterator;
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typedef gpcpoly_container::const_iterator const_gpcpoly_iterator;
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#define FG_MAX_AREA_TYPES 20
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#define EXTRA_SAFETY_CLIP
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#define FG_MAX_VERTICES 100000
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class point2d {
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public:
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double x, y;
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};
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class FGgpcPolyList {
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public:
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gpcpoly_container polys[FG_MAX_AREA_TYPES];
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gpc_polygon safety_base;
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};
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class FGClipper {
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private:
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gpc_vertex_list v_list;
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// static gpc_polygon poly;
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FGgpcPolyList polys_in, polys_clipped;
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public:
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// Constructor
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FGClipper( void );
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// Destructor
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~FGClipper( void );
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// Initialize Clipper (allocate and/or connect structures)
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bool init();
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// Load a polygon definition file
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bool load_polys(const string& path);
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// Do actually clipping work
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bool clip_all(const point2d& min, const point2d& max);
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// return output poly list
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inline FGgpcPolyList get_polys_clipped() const { return polys_clipped; }
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};
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#endif // _CLIPPER_HXX
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