void drawingData(ArNetPacket *packet)
{
  int x, y;
  int numReadings;
  int i;

  numReadings = packet->bufToByte4();

  if (numReadings == 0)
  {
    printf("No readings for sensor %s\n", client.getName(packet));
  }
  printf("Readings for %s:", client.getName(packet));
  for (i = 0; i < numReadings; i++)
  {
    x = packet->bufToByte4();
    y = packet->bufToByte4();
    printf(" (%d %d)", x, y);
  }
  printf("\n\n");
}