77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
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// index.cxx -- routines to handle a unique/persistant integer polygon index
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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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// (Log is kept at end of this file)
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#include <Include/compiler.h>
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#include STL_STRING
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#include <stdio.h>
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#include "index.hxx"
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static int poly_index;
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static string poly_path;
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// initialize the unique polygon index counter stored in path
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bool poly_index_init( string path ) {
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poly_path = path;
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FILE *fp = fopen( poly_path.c_str(), "r" );
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if ( fp == NULL ) {
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cout << "Error cannot open " << poly_path << endl;
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poly_index = 0;
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return false;
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}
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fscanf( fp, "%d", &poly_index );
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fclose( fp );
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}
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// increment the persistant counter and return the next poly_index
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int poly_index_next() {
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++poly_index;
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FILE *fp = fopen( poly_path.c_str(), "w" );
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if ( fp == NULL ) {
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cout << "Error cannot open " << poly_path << " for writing" << endl;
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}
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fprintf( fp, "%d\n", poly_index );
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fclose( fp );
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return poly_index;
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}
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// $Log$
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// Revision 1.1 1999/02/25 21:30:24 curt
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// Initial revision.
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//
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