stlfile.hpp

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/* Copyright (c) 2011-2012 Taneli Kalvas. All rights reserved.
 *
 * You can redistribute this software 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 library 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 library (file "COPYING" included in the package);
 * if not, write to the Free Software Foundation, Inc., 51 Franklin
 * Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * If you have questions about your rights to use or distribute this
 * software, please contact Berkeley Lab's Technology Transfer
 * Department at TTD@lbl.gov. Other questions, comments and bug
 * reports should be sent directly to the author via email at
 * taneli.kalvas@jyu.fi.
 * 
 * NOTICE. This software was developed under partial funding from the
 * U.S.  Department of Energy.  As such, the U.S. Government has been
 * granted for itself and others acting on its behalf a paid-up,
 * nonexclusive, irrevocable, worldwide license in the Software to
 * reproduce, prepare derivative works, and perform publicly and
 * display publicly.  Beginning five (5) years after the date
 * permission to assert copyright is obtained from the U.S. Department
 * of Energy, and subject to any subsequent five (5) year renewals,
 * the U.S. Government is granted for itself and others acting on its
 * behalf a paid-up, nonexclusive, irrevocable, worldwide license in
 * the Software to reproduce, prepare derivative works, distribute
 * copies to the public, perform publicly and display publicly, and to
 * permit others to do so.
 */

#ifndef STLFILE_HPP
#define STLFILE_HPP 1


#include <fstream>
#include <string>
#include <vector>
#include <stdint.h>
#include "vtriangle.hpp"
#include "vec3d.hpp"


class STLFile {

    class Triangle {

        Vec3D    _normal;
        Vec3D    _p[3];
        uint16_t _attr;

        void static read_binary_float_vector( Vec3D &x, std::ifstream &ifstr );
        void static read_ascii_float_vector( Vec3D &x, const char *buf, 
                                             const std::string &filename, int linec );
    public:

        Triangle( std::ifstream &ifstr );
        Triangle( std::ifstream &ifstr, const char *buf, const std::string &filename, int &linec );
        ~Triangle();

        uint16_t attr( void ) const;
        const Vec3D &normal( void ) const;
        const Vec3D &operator[]( int i ) const {
            return( _p[i] );
        }
        
        void debug_print( std::ostream &os ) const;
    };

    std::string            _filename;
    bool                   _ascii;
    std::vector<Triangle>  _tri;       // Original triangles
    VTriangleSurfaceSolid  _solid;

    void read_binary( std::ifstream &ifstr );
    void read_ascii( std::ifstream &ifstr );
    void build_vtriangle_data( void );

public:

    STLFile( const std::string &filename, 
             double vertex_matching_eps = 1.0e-9, 
             double signed_volume_eps = 1.0e-15 );

    STLFile( const std::vector<Vec3D> &vertex,
             const std::vector<VTriangle> &triangle );

    ~STLFile();

    void save( const std::string &filename, bool ascii = true ) const;

    bool inside( const Vec3D &x ) {
        return( _solid.inside( x ) );
    }

    void get_bbox( Vec3D &min, Vec3D &max ) const {
        _solid.get_bbox( min, max );
    }

    void debug_print( std::ostream &os ) const;
};


#endif