// index.cxx -- routines to handle a unique/persistant integer polygon index // // Written by Curtis Olson, started February 1999. // // Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. // // $Id$ // (Log is kept at end of this file) #include #include STL_STRING #include #include "index.hxx" static long int poly_index; static string poly_path; // initialize the unique polygon index counter stored in path bool poly_index_init( string path ) { poly_path = path; FILE *fp = fopen( poly_path.c_str(), "r" ); if ( fp == NULL ) { cout << "Error cannot open " << poly_path << endl; poly_index = 0; return false; } fscanf( fp, "%ld", &poly_index ); fclose( fp ); } // increment the persistant counter and return the next poly_index long int poly_index_next() { ++poly_index; FILE *fp = fopen( poly_path.c_str(), "w" ); if ( fp == NULL ) { cout << "Error cannot open " << poly_path << " for writing" << endl; } fprintf( fp, "%ld\n", poly_index ); fclose( fp ); return poly_index; } // $Log$ // Revision 1.1 1999/04/05 21:32:42 curt // Initial revision // // Revision 1.2 1999/03/19 00:27:30 curt // Use long int for index instead of just int. // // Revision 1.1 1999/02/25 21:30:24 curt // Initial revision. //