void drawPolygon(uint8_t r, uint8_t g, uint8_t b, int nombreDePoints, ...)
// r, g, b, <number of points you want (4 for a square, for instance, not 8 because of x and y...)>, <x1,y1,x2,y2...>
{
    // the number of arguments in the <...> must be even
    int i;
    int* pointsList = (int*)malloc(nombreDePoints*2*sizeof(int));

    va_list ap;
    int cur_arg = 1;

    va_start(ap, nombreDePoints);

    for (i = 0; i < nombreDePoints*2; i++)
    {
        cur_arg = va_arg(ap, int);
        *(pointsList + i) = cur_arg;
    }

    for (i = 0; i < nombreDePoints*2 - 2; i+=2)
    {
        drawLine(*(pointsList + i), *(pointsList + i + 1), *(pointsList + i + 2), *(pointsList + i + 3), r, g, b);
    }
    drawLine(*(pointsList + nombreDePoints*2 - 2), *(pointsList + nombreDePoints*2 - 1), *(pointsList), *(pointsList + 1), r, g, b);
    va_end(ap);
    free(pointsList);
}