TAPsReadDot10.cpp

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/******************************************************************************
TAPsReadDot10.cpp

Create an Opengl polygonal mesh object from a .10 format file.

SUKITTI PUNAK   (11/11/2004)
UPDATE          (11/11/2004)
******************************************************************************/
#include "TAPsReadDot10.hpp"
// Using Inclusion Model (i.e. definitions are included in declarations)
//                       (this name.cpp is included in name.hpp)
// Each friend is defined directly inside its declaration.

BEGIN_NAMESPACE_TAPs
//=============================================================================
template <typename T> int ReadDot10<T>::NumberOfVertices = 0;
template <typename T> int ReadDot10<T>::NumberOfFaces = 0;
template <typename T> FILE * ReadDot10<T>::fileIn = NULL;
//=============================================================================
//-----------------------------------------------------------------------------
// Display the contents of an object
template <typename T>
bool ReadDot10<T>::readFile( const char *fileName, OpenGL::PolygonalModel<T> * const prModel )
{
    //----------------------------------------------------------------
    // Open the input file
    fileIn = fopen( fileName, "r" );
    if ( !fileIn ) {
        std::perror( fileName );
        return false;
    }
    //----------------------------------------------------------------
    // Process Vertices
    NumberOfVertices = 0;
    int n;
    char line[128];
    fgets( line, 128, fileIn );
    sscanf( line, "%d", &n );
    prModel->SetNoVertices( n );
    prModel->NewVertexListByNoVertices();
    for (int i = 0; i < n; ++i )
    {
        fgets( line, 1024, fileIn );
        ProcessVertex( line, i, prModel );
    }
    //----------------------------------------------------------------
    // Process Faces
    NumberOfFaces = 0;
    fgets( line, 128, fileIn );
    sscanf( line, "%d", &n );
    prModel->SetNoFaces( n );
    prModel->NewFaceListByNoFaces();
    for (int i = 0; i < n; ++i )
    {
        fgets( line, 1024, fileIn );
        ProcessFace( line, i, prModel );
    }
    //----------------------------------------------------------------
    fclose( fileIn );   // close the input file
    std::cout   <<   "TOTAL VERTICES: " << NumberOfVertices
                << "\nTOTAL FACES:    " << NumberOfFaces
                << "\n";
    return true;
}
//-----------------------------------------------------------------------------
// Display the contents of an object
template <typename T>
bool ReadDot10<T>::readFile( const char *fileName, OpenGL::XPolygonalModel<T> * const prModel )
{
    //----------------------------------------------------------------
    // Open the input file
    fileIn = fopen( fileName, "r" );
    if ( !fileIn ) {
        std::perror( fileName );
        return false;
    }
    //----------------------------------------------------------------
    // Process Vertices
    int n;
    char line[128];
    fgets( line, 128, fileIn );
    sscanf( line, "%d", &n );
    prModel->SetNoVertices( n );
    prModel->NewVertexListByNoVertices();
    for (int i = 0; i < n; ++i )
    {
        fgets( line, 1024, fileIn );
        ProcessVertex( line, i, prModel );
    }
    //----------------------------------------------------------------
    // Process Faces
    fgets( line, 128, fileIn );
    sscanf( line, "%d", &n );
    prModel->SetNoFaces( n );
    prModel->NewFaceListByNoFaces();
    for (int i = 0; i < n; ++i )
    {
        fgets( line, 1024, fileIn );
        ProcessFace( line, i, prModel );
    }
    //----------------------------------------------------------------
    fclose( fileIn );   // close the input file
    std::cout   <<   "TOTAL VERTICES: " << NumberOfVertices
                << "\nTOTAL FACES:    " << NumberOfFaces
                << "\n";
    return true;
}
//=============================================================================
//-----------------------------------------------------------------------------
// Convert vertex nodes
template <typename T>
void ReadDot10<T>::ProcessVertex( char *line, int n, OpenGL::PolygonalModel<T> * const prModel )
{
    ++NumberOfVertices;

    //Example
    // 12 556.629028 2647.669922 436.273010
    char *end;
    char *delimiters = "\t ";
    char *token = strtok( line, delimiters );   // token is "12"
    token  = strtok( '\0', delimiters );        // token is "556.629028"
    prModel->GetVertexList()[n][0] = strtod( token, &end );
    token  = strtok( '\0', delimiters );        // token is "2647.669922"
    prModel->GetVertexList()[n][1] = strtod( token, &end );
    token  = strtok( '\0', delimiters );        // token is "436.273010"
    prModel->GetVertexList()[n][2] = strtod( token, &end );
}
//-----------------------------------------------------------------------------
// Convert vertex nodes
template <typename T>
void ReadDot10<T>::ProcessVertex( char *line, int n, OpenGL::XPolygonalModel<T> * const prModel )
{
    ++NumberOfVertices;
    //std::cout << "ProcessVertex# " << NumberOfVertices << std::endl;

    //Example
    // 12 556.629028 2647.669922 436.273010
    char *end;
    char *delimiters = "\t ";
    char *token = strtok( line, delimiters );   // token is "12"
    token  = strtok( '\0', delimiters );        // token is "556.629028"
    prModel->GetVertexList()[n][0] = strtod( token, &end );
    token  = strtok( '\0', delimiters );        // token is "2647.669922"
    prModel->GetVertexList()[n][1] = strtod( token, &end );
    token  = strtok( '\0', delimiters );        // token is "436.273010"
    prModel->GetVertexList()[n][2] = strtod( token, &end );
}
//=============================================================================
//-----------------------------------------------------------------------------
// Convert face node
template <typename T>
void ReadDot10<T>::ProcessFace( char *line, int n, OpenGL::PolygonalModel<T> * const prModel )
{
    ++NumberOfFaces;

    //Example
    // 4    12 11 4 3

    // Initialize
    char *delimiters = "\t ";
    char *token = strtok( line, delimiters );   // token is "4"
    char *end;
    int numberOfVertices;
    int vertexNo;
    
    // Get number of vertices
    numberOfVertices = static_cast<int>( strtol( token, &end, 10 ) );
    prModel->GetFaceList()[n].SetNoVertices( numberOfVertices );

    // Set the face
    for ( int i = 0; i < numberOfVertices; ++i )
    {
        token = strtok( '\0', delimiters );
        vertexNo = static_cast<int>( strtol( token, &end, 10 ) ) - 1;
        prModel->GetFaceList()[n].SetVertexNo( i, vertexNo );
    }
}
//-----------------------------------------------------------------------------
// Convert face node
template <typename T>
void ReadDot10<T>::ProcessFace( char *line, int n, OpenGL::XPolygonalModel<T> * const prModel )
{
    ++NumberOfFaces;
    //std::cout << "ProcessFace# " << NumberOfVertices << std::endl;

    //Example
    // 4    12 11 4 3

    // Initialize
    char *delimiters = "\t ";
    char *token = strtok( line, delimiters );   // token is "4"
    char *end;
    int numberOfVertices;
    int vertexNo;
    
    // Get number of vertices
    numberOfVertices = static_cast<int>( strtol( token, &end, 10 ) );
    prModel->GetFaceList()[n].SetNoVertices( numberOfVertices );

    // Set the face
    for ( int i = 0; i < numberOfVertices; ++i )
    {
        token = strtok( '\0', delimiters );
        vertexNo = static_cast<int>( strtol( token, &end, 10 ) ) - 1;
        prModel->GetFaceList()[n].SetVertexNo( i, vertexNo );
    }
}
//-----------------------------------------------------------------------------
//=============================================================================
END_NAMESPACE_TAPs
//-----------------------------------------------------------------------------
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