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parseObject.h File Reference

#include <string>

Go to the source code of this file.

Functions
string	readFile ( char* filename )
	Reads a text file and parses it Reads a human readable file and parses it into a binary description. More...

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Function Documentation

string readFile ( char * filename)

Reads a text file and parses it Reads a human readable file and parses it into a binary description.

Author(s):

xandi , stonedbones

Parameters:

filename

the file to read the data from

Definition at line 25 of file parseObject.cpp.

{
    ifstream f(filename);

    char* str = new char[12500];

    float   tempF;
    int     tempI;
    char    tempC;
    int     pos;

    strcpy ( str, filename);

    pos = 64;  // position in output string,after header, where data starts

    f >> tempI; // read number of vertices


    memcpy ( str+pos, &tempI, sizeof(int) ); // update output string with data
    pos = pos + sizeof(int);                 // update position variable

    int i,ii,jj;
    float vertex[3];
    ii = tempI;
    for ( i = 0; i < ii; i++ ) {  // read in coordinates for vertices
        f >> vertex[0];      // read X coordinate
        f >> vertex[1];      // read Y coordinate
        f >> vertex[2];      // read Z coordinate

    // update output string with numbner of points and update position variable
        tempI = i+1;
        memcpy ( str+pos, &tempI, sizeof(int) );
        pos = pos + sizeof(int);

    // update output string with x coordinate and update position variable
        tempF = vertex[0];
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

    // update output string with y coordinate and update position variable
        tempF = vertex[1];
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

    // update output string with z coordinate and update position variable
        tempF = vertex[2];
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

    #ifdef DEBUG
    cerr << "Vertex " << tempI << ": " << vertex[0] << ", " << vertex[1] << ", " << vertex[2] << "\n";
    #endif
    }


    // update output string with number of polygons and update position variable
    f >> tempI;     // read number of polygons
    memcpy ( str+pos, &tempI, sizeof(int) );
    pos = pos + sizeof(int);

    ii = tempI;
    for ( i = 1; i <= ii; i++) {

    // update output string with polygons number and update position variable
        f >> tempI; // read in polygon number
        memcpy ( str+pos, &tempI, sizeof(int) );
        pos = pos + sizeof(int);

    // update output string with polygons type and update position variable
        tempC = 1;   // define polygon type
        memcpy ( str+pos, &tempC, sizeof(char) );
        pos = pos + sizeof(char);

    // update output string with polygons color and update position variable
        f >> tempF;  // first color part
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

        f >> tempF;  // second color part
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

        f >> tempF;  // third color part
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

        f >> tempF;  // fourth color part
        memcpy ( str+pos, &tempF, sizeof(float) );
        pos = pos + sizeof(float);

    // update output string with number of vertice in the present polygons
   //  and updates position variable
        f >> tempI; // read number of vertices in polygon
        memcpy ( str+pos, &tempI, sizeof(int) );
        pos = pos + sizeof(int);

        #ifdef DEBUG
        cerr << "Poly " << i << ": ";
        #endif

    // update output string with vertice indexes in present polygon
    // and updates position variable
        jj = tempI;
        for (int j = 1; j <= jj; j++) {

            f >> tempI;
            memcpy ( str+pos, &tempI, sizeof(int) );
                pos = pos + sizeof(int);
            #ifdef DEBUG
            cerr << tempI << " ";
            #endif
        };
        #ifdef DEBUG
        cerr << "\n";
        #endif
    };


    #ifdef DEBUG
    fprintf(stderr,"[parser] String is %d long\n", pos );
    #endif

    return string ( str, pos );
    }

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