void writeMatriz(Matriz* m, FILE* f)
{
    IMAGE aux;
    int i, j;
    unsigned int pixelBytesPerRow = m->y * 3;
    unsigned int paddingBytesPerRow = (4 - (pixelBytesPerRow % 4)) % 4;
    static unsigned char zeroes[3] = {0, 0, 0};

    for (i = m->x - 1; i > -1; i--)
    {
        for (j = 0; j < m->y; j++)
        {
            aux = m->matriz[i][j];
            fwrite(&aux, sizeof(unsigned char), sizeof(IMAGE), f);
        }
        fwrite(zeroes, sizeof(unsigned char), paddingBytesPerRow, f);
    }
}