vtkfile

#include<stdio.h>

int main(int argc, char *argv[])
{
    //Decralation of variables
    int i;
    int r,g,b;
    unsigned long newline_count=0;
    FILE *fpi,*fpo;
    float x,y,z;

    if(argc!=3)
    {
        fprintf(stderr,"Usage: %s (1)CSVFile\n(2)VTKFile\n",argv[0]);

        return 0;
    }

    //Open CSV file
    if((fpi=fopen(argv[1],"r"))==NULL)
    {
        printf ("The file can't be opened. The program is exit.\n");

        return 0;
    }

    //Open VTK file for save
    if((fpo=fopen(argv[2],"w"))==NULL)
    {
            printf("The file can't be opened. The program is exit.\n");

            return 0;
}


//count how many lines
/*
while((c=fgetc(fpi))!=EOF)
{
    if(c=='\n')
        newline_count++;
}
*/

while(fscanf(fpi,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
{
    newline_count=newline_count+1;
}

printf("total=%ld\n",newline_count);

//writing VTK file
fprintf(fpo,"# vtk DataFile Version 3.0\n");
fprintf(fpo,"vtk output\n");
fprintf(fpo,"ASCII\n");
fprintf(fpo,"DATASET UNSTRUCTURED_GRID\n");
fprintf(fpo,"POINTS %ld float\n",newline_count);


fseek(fpi,0,SEEK_SET);

while (fscanf(fpi,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
{
    printf("%f,%f,%f,%d,%d,%d\n",x,y,z,r,g,b);
    fprintf(fpo,"%f%f%f\n",x,y,z);
}

fprintf(fpo,"CELLS %ld %ld\n",newline_count,newline_count*2);

for(i=0;i<newline_count;i++)
{
    fprintf(fpo,"1 %d/n",i);
}

fprintf(fpo,"CELL_TYPES %ld\n",newline_count);

for(i=0;i<newline_count;i++)
{
    fprintf(fpo,"1\n");
}

fprintf(fpo,"POINT_DATA %ld\n",newline_count);

fprintf(fpo,"COLOR_SCALARS RGB 3\n");

fseek(fpi,0,SEEK_SET);

while(fscanf(fpi,"%f,%f,%f,%d,%d,%d",&x,&y,&z,&r,&g,&b)!=EOF)
{
    fprintf(fpo,"%f %f %f\n",(float)r/255,(float)g/255,(float)b/255);
}

fclose(fpi);
fclose(fpo);

}