71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*
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open source routing machine
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Copyright (C) Dennis Luxen, others 2010
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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 AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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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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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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#ifndef NASA_GRID_SQUARE_H
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#define NASA_GRID_SQUARE_H
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#include "ProjectionUtils.h"
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#include "../typedefs.h"
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#include <cmath>
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#include <string>
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#include <sstream>
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#include <cstdio>
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#include <cstring>
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#include <fstream>
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#include <iostream>
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#include <zip.h>
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class NasaGridSquare {
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public:
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const static short NO_DATA =-32768; ///< NASA's magic number for no data.
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NasaGridSquare(int lng, int lat, std::string & _rp);
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~NasaGridSquare();
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short getHeight(float lng_fraction, float lat_fraction) const;
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bool hasData() const {return bool(elevationMap != NULL);}
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private:
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std::string ROOT_PATH;
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char * elevationMap;
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int longitude;
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int latitude;
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unsigned int num_bytes; ///< Length of data.
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unsigned int numRows;
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unsigned int numCols;
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std::string make_filename(const char* ext) const;
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/** Loads the file into memory, pointed to by 'data'. Sets num_bytes. */
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void load(const char* filename);
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/** Converts lng,lat floats to col,row ints. Returns TRUE if result valid. */
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bool lngLat_to_colRow(float lng_fraction, float lat_fraction, unsigned int& col, unsigned int& row) const;
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inline bool exists(const char* path) {
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std::ifstream ifile(path);
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return ifile;
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}
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};
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#endif // NASA_GRID_SQUARE_H
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