stlfile.hpp
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00001 
00005 /* Copyright (c) 2011 Taneli Kalvas. All rights reserved.
00006  *
00007  * You can redistribute this software and/or modify it under the terms
00008  * of the GNU General Public License as published by the Free Software
00009  * Foundation; either version 2 of the License, or (at your option)
00010  * any later version.
00011  * 
00012  * This library is distributed in the hope that it will be useful, but
00013  * WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00015  * General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with this library (file "COPYING" included in the package);
00019  * if not, write to the Free Software Foundation, Inc., 51 Franklin
00020  * Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  * 
00022  * If you have questions about your rights to use or distribute this
00023  * software, please contact Berkeley Lab's Technology Transfer
00024  * Department at TTD@lbl.gov. Other questions, comments and bug
00025  * reports should be sent directly to the author via email at
00026  * taneli.kalvas@jyu.fi.
00027  * 
00028  * NOTICE. This software was developed under partial funding from the
00029  * U.S.  Department of Energy.  As such, the U.S. Government has been
00030  * granted for itself and others acting on its behalf a paid-up,
00031  * nonexclusive, irrevocable, worldwide license in the Software to
00032  * reproduce, prepare derivative works, and perform publicly and
00033  * display publicly.  Beginning five (5) years after the date
00034  * permission to assert copyright is obtained from the U.S. Department
00035  * of Energy, and subject to any subsequent five (5) year renewals,
00036  * the U.S. Government is granted for itself and others acting on its
00037  * behalf a paid-up, nonexclusive, irrevocable, worldwide license in
00038  * the Software to reproduce, prepare derivative works, distribute
00039  * copies to the public, perform publicly and display publicly, and to
00040  * permit others to do so.
00041  */
00042 
00043 #ifndef STLFILE_HPP
00044 #define STLFILE_HPP 1
00045 
00046 
00047 #include <fstream>
00048 #include <string>
00049 #include <vector>
00050 #include "vec3d.hpp"
00051 
00052 
00053 class STLFile {
00054 
00055     class Triangle {
00056 
00057         Vec3D    _normal;
00058         Vec3D    _p1;
00059         Vec3D    _p2;
00060         Vec3D    _p3;
00061         uint16_t _attr;
00062 
00063         void static read_binary_float_vector( Vec3D &x, std::ifstream &ifstr );
00064         static void bbox_ppoint( Vec3D &min, Vec3D &max, const Vec3D &p );
00065 
00066     public:
00067 
00068         Triangle( std::ifstream &ifstr );
00069         ~Triangle();
00070 
00071         const Vec3D &normal( void ) const;
00072         const Vec3D &p1( void ) const;
00073         const Vec3D &p2( void ) const;
00074         const Vec3D &p3( void ) const;
00075         const Vec3D &operator[]( int i ) const;
00076         
00077         void update_bbox( Vec3D &min, Vec3D &max ) const;
00078 
00079         int ray_cross( const Vec3D &x, const Vec3D &l ) const;
00080 
00081         void debug_print( std::ostream &os ) const;
00082     };
00083 
00084     class VTriangle {
00085 
00086         uint32_t _v[3];
00087         Vec3D    _normal;
00088 
00089     public:
00090 
00091         VTriangle( uint32_t v1, uint32_t v2, uint32_t v3, const Vec3D &normal );
00092         VTriangle( const uint32_t v[3], const Vec3D &normal );
00093         ~VTriangle();
00094 
00095         const Vec3D &normal( void ) const;
00096         const uint32_t &operator[]( int i ) const;
00097 
00098         bool inside( const Vec3D &x ) const;
00099 
00100         void debug_print( std::ostream &os ) const;
00101 
00104         friend std::ostream &operator<<( std::ostream &os, const VTriangle &vtri );
00105     };
00106 
00107     bool                   _ascii;
00108     std::vector<Triangle>  _triangle;  // Original triangle data
00109 
00110     std::vector<Vec3D>     _vertex;    // Vertex list
00111     std::vector<VTriangle> _vtri;      // Vertex made triangles
00112 
00113     void read_binary( std::ifstream &ifstr );
00114     void build_vtriangle_data( void );
00115 
00116 public:
00117 
00118     STLFile( const std::string &filename );
00119 
00120     ~STLFile();
00121 
00122     size_t size( void );
00123 
00124     bool inside( const Vec3D &x, double eps = 1.0e-6 ) const;
00125 
00128     void get_bbox( Vec3D &min, Vec3D &max ) const;
00129 
00132     void debug_print( std::ostream &os ) const;
00133 
00136     friend std::ostream &operator<<( std::ostream &os, const VTriangle &vtri );
00137 };
00138 
00139 
00140 #endif
00141 
00142