MSH_Reader Class Reference

#include <MSH_Reader.h>

Public Member Functions
	MSH_Reader ()
int	read_mesh (const char *fname, const std::string &wname)

Private Types
enum	{ MAXLEN =255 }

Private Member Functions
void	get_nextline (std::istream &is, char *str)
void	read_pane_coors (std::istream &is, const std::string &wname)
void	read_pane_elems (std::istream &is, const std::string &wname)

Private Attributes
char	buf [MAXLEN+1]

Detailed Description

Definition at line 40 of file MSH_Reader.h.

Member Enumeration Documentation

anonymous enum

private

Enumerator
MAXLEN

Definition at line 144 of file MSH_Reader.h.

{MAXLEN=255};

Constructor & Destructor Documentation

MSH_Reader ( )

inline

Definition at line 43 of file MSH_Reader.h.

{}

Member Function Documentation

void get_nextline ( std::istream &  is, char *  str  )

inlineprivate

Definition at line 67 of file MSH_Reader.h.

References MAXLEN.

Referenced by read_pane_coors(), and read_pane_elems().

                                                {
    str[0] = '\0';
    if ( is.eof()) { return; }
    is.getline( str, MAXLEN); 
  }

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int read_mesh ( const char *  fname, const std::string &  wname  )

inline

Definition at line 47 of file MSH_Reader.h.

References COM_get_window_handle(), COM_new_window(), read_pane_coors(), and read_pane_elems().

Referenced by main().

                                                            {
    std::ifstream is( fname); 
    if ( is == NULL) {
      std::cerr << "Error: Could not open file " << fname << std::endl;
      exit(-1);
    }

    // Create the window if not yet exist
    int h=COM_get_window_handle(wname.c_str());
    if ( h<=0) COM_new_window( wname.c_str());

    std::cout << "Reading file " << fname << std::endl;

    read_pane_coors( is, wname);
    read_pane_elems( is, wname);

    return 1;
  }

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void read_pane_coors ( std::istream &  is, const std::string &  wname  )

inlineprivate

Definition at line 74 of file MSH_Reader.h.

References buf, COM_allocate_array(), COM_assertion_msg, COM_set_size(), copy, get_nextline(), i, n, and s.

Referenced by read_mesh().

                                                                {
    std::vector<SURF::Point_3<double> >  coors;

    // First, look for number of vertices
    for ( ;;) {
      get_nextline( is, buf);
      std::string s(buf);

      if ( s.find("Vertices",0)!=std::string::npos) break;
    }

    int n=0;
    is >> n; get_nextline(is, buf);
    coors.reserve(n);

    for ( int i=0; i<n; ++i) {
      get_nextline( is, buf);

      SURF::Point_3<double> p;

      std::sscanf( buf, "%lf %lf %lf", &p[0], &p[1], &p[2]);
      coors.push_back( p);
    }

    COM_assertion_msg( n>0, "Did not find any nodes");
    std::cout << "Read in " << n << " nodes" << std::endl;

    COM_set_size( (wname+".nc").c_str(), 1, n);
    SURF::Point_3<double> *p;
    COM_allocate_array( (wname+".nc").c_str(), 1, &(void*&)p);

    std::copy( coors.begin(), coors.end(), p);
  }

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void read_pane_elems ( std::istream &  is, const std::string &  wname  )

inlineprivate

Definition at line 109 of file MSH_Reader.h.

References buf, COM_allocate_array(), COM_assertion_msg, COM_set_size(), copy, get_nextline(), i, n, and s.

Referenced by read_mesh().

                                                               {
    std::vector<SURF::Vector_3<int> >  elems;

    // First, look for number of triangles
    for (;;) {
      get_nextline( is, buf);
      std::string s(buf);
      
      if ( s.find("Triangles",0)!=std::string::npos) break;
    }

    int n=0;
    is >> n; get_nextline(is, buf);
    elems.reserve(n);

    // When entering this routine, buf[0] should start with 'f'
    for ( int i=0; i<n; ++i) {
      get_nextline( is, buf);

      SURF::Vector_3<int> p;
      std::sscanf( buf, "%d %d %d", &p[0], &p[1], &p[2]);
      elems.push_back( p);
    }

    COM_assertion_msg( n>0, "Did not find any faces");
    std::cout << "Read in " << n << " triangles" << std::endl;

    COM_set_size( (wname+".:t3:").c_str(), 1, n);
    SURF::Vector_3<int> *p;
    COM_allocate_array( (wname+".:t3:").c_str(), 1, &(void*&)p);
    
    std::copy( elems.begin(), elems.end(), p);
  }

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Member Data Documentation

char buf[MAXLEN+1]

private

Definition at line 145 of file MSH_Reader.h.

Referenced by read_pane_coors(), and read_pane_elems().

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The documentation for this class was generated from the following file:

• MSH_Reader.h