main.cpp

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//
//
//  This tool will read ARToolKit pattern files (size 16x16) and save
//  them mirrored in y-direction.
//
//  Usage: MirrorPatt [infilename] [outfilename]
//
//

#include <stdio.h>
#include <assert.h>



void
readLine(FILE* fp, char* line)
{
        *line++ = fgetc(fp);

        while(line[-1] != '\n')
                *line++ = fgetc(fp);

        *line++ = 0;
}


void mirrorMarkerFile(const char* nInName, const char* nOutName, int nMarkerWidth, int nMarkerHeight)
{
        FILE    *finp = fopen(nInName, "r"),
                        *foutp = fopen(nOutName, "w");

        if(!finp)
                return;

        const int strMax = 256, numPix = nMarkerWidth*nMarkerHeight;
        char str[32][strMax+1];
        int y,channel,rot;

        for(rot=0; rot<4; rot++)
        {
                for(channel=0; channel<3; channel++)
                {
                        for(y=0; y<nMarkerHeight; y++)
                        {
                                readLine(finp, str[y]);
                        }

                        for(y=0; y<nMarkerHeight; y++)
                        {
                                fprintf(foutp, "%s", str[nMarkerHeight-1-y]);
//                              fprintf(foutp, "%s", str[y]);
                        }
                }

                readLine(finp, str[0]);
                fprintf(foutp, "\n");
        }

        fclose(finp);
        fclose(finp);
}


int main(int argc, char** argv)
{
        if(argc<3)
        {
                printf("ERROR: to few parameters\n");
                return -1;
        }

        const char      *inName = argv[1],
                                *outName = argv[2];

        mirrorMarkerFile(inName, outName, 16,16);
        return 0;
}