94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
// trieles.hxx -- "Triangle" element management class
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//
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// Written by Curtis Olson, started March 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
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (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, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// 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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// (Log is kept at end of this file)
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#ifndef _TRIELES_HXX
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#define _TRIELES_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 <vector>
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FG_USING_STD(vector);
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// a segment is two integer pointers into the node list
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class FGTriEle {
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int n1, n2, n3;
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double attribute;
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public:
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// Constructor and destructor
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inline FGTriEle( void ) { };
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inline FGTriEle( int i1, int i2, int i3, double a ) {
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n1 = i1; n2 = i2; n3 = i3; attribute = a;
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}
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inline ~FGTriEle( void ) { };
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inline int get_n1() const { return n1; }
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inline void set_n1( int i ) { n1 = i; }
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inline int get_n2() const { return n2; }
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inline void set_n2( int i ) { n2 = i; }
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inline int get_n3() const { return n3; }
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inline void set_n3( int i ) { n3 = i; }
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inline double get_attribute() const { return attribute; }
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inline void set_attribute( double a ) { attribute = a; }
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};
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typedef vector < FGTriEle > triele_list;
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typedef triele_list::iterator triele_list_iterator;
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typedef triele_list::const_iterator const_triele_list_iterator;
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#endif // _TRIELES_HXX
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// $Log$
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// Revision 1.3 1999/03/27 05:30:14 curt
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// Handle corner nodes separately from the rest of the fitted nodes.
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// Add fitted nodes in after corners and polygon nodes since the fitted nodes
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// are less important. Subsequent nodes will "snap" to previous nodes if
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// they are "close enough."
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// Need to manually divide segments to prevent "T" intersetions which can
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// confound the triangulator. Hey, I got to use a recursive method!
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// Pass along correct triangle attributes to output file generator.
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// Do fine grained node snapping for corners and polygons, but course grain
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// node snapping for fitted terrain nodes.
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//
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// Revision 1.2 1999/03/23 22:02:53 curt
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// Refinements in naming and organization.
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//
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// Revision 1.1 1999/03/22 23:58:57 curt
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// Initial revision.
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//
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