/**
   * Unpacks a Pdu from the underlying data.
   *
   * @throws java.nio.BufferUnderflowException if buff is too small
   * @see java.nio.ByteBuffer
   * @param buff The ByteBuffer at the position to begin reading
   * @since ??
   */
  public void unmarshal(java.nio.ByteBuffer buff) {
    super.unmarshal(buff);

    minefieldID.unmarshal(buff);
    requestingEntityID.unmarshal(buff);
    minefieldSequenceNumbeer = (int) (buff.getShort() & 0xFFFF);
    requestID = (short) (buff.get() & 0xFF);
    pduSequenceNumber = (short) (buff.get() & 0xFF);
    numberOfPdus = (short) (buff.get() & 0xFF);
    numberOfMinesInThisPdu = (short) (buff.get() & 0xFF);
    numberOfSensorTypes = (short) (buff.get() & 0xFF);
    pad2 = (short) (buff.get() & 0xFF);
    dataFilter = buff.getInt();
    mineType.unmarshal(buff);
    for (int idx = 0; idx < numberOfSensorTypes; idx++) {
      TwoByteChunk anX = new TwoByteChunk();
      anX.unmarshal(buff);
      sensorTypes.add(anX);
    }

    pad3 = (short) (buff.get() & 0xFF);
    for (int idx = 0; idx < numberOfMinesInThisPdu; idx++) {
      Vector3Float anX = new Vector3Float();
      anX.unmarshal(buff);
      mineLocation.add(anX);
    }
  } // end of unmarshal method
  public void unmarshal(DataInputStream dis) {
    super.unmarshal(dis);

    try {
      minefieldID.unmarshal(dis);
      requestingEntityID.unmarshal(dis);
      minefieldSequenceNumbeer = (int) dis.readUnsignedShort();
      requestID = (short) dis.readUnsignedByte();
      pduSequenceNumber = (short) dis.readUnsignedByte();
      numberOfPdus = (short) dis.readUnsignedByte();
      numberOfMinesInThisPdu = (short) dis.readUnsignedByte();
      numberOfSensorTypes = (short) dis.readUnsignedByte();
      pad2 = (short) dis.readUnsignedByte();
      dataFilter = dis.readInt();
      mineType.unmarshal(dis);
      for (int idx = 0; idx < numberOfSensorTypes; idx++) {
        TwoByteChunk anX = new TwoByteChunk();
        anX.unmarshal(dis);
        sensorTypes.add(anX);
      }

      pad3 = (short) dis.readUnsignedByte();
      for (int idx = 0; idx < numberOfMinesInThisPdu; idx++) {
        Vector3Float anX = new Vector3Float();
        anX.unmarshal(dis);
        mineLocation.add(anX);
      }

    } // end try
    catch (Exception e) {
      System.out.println(e);
    }
  } // end of unmarshal method
  public void unmarshal(DataInputStream dis) {
    super.unmarshal(dis);

    try {
      minefieldID.unmarshal(dis);
      requestingEntityID.unmarshal(dis);
      requestID = (short) dis.readUnsignedByte();
      numberOfPerimeterPoints = (short) dis.readUnsignedByte();
      pad2 = (short) dis.readUnsignedByte();
      numberOfSensorTypes = (short) dis.readUnsignedByte();
      dataFilter = dis.readInt();
      requestedMineType.unmarshal(dis);
      for (int idx = 0; idx < numberOfPerimeterPoints; idx++) {
        Point anX = new Point();
        anX.unmarshal(dis);
        requestedPerimeterPoints.add(anX);
      }

      for (int idx = 0; idx < numberOfSensorTypes; idx++) {
        TwoByteChunk anX = new TwoByteChunk();
        anX.unmarshal(dis);
        sensorTypes.add(anX);
      }

    } // end try
    catch (Exception e) {
      System.out.println(e);
    }
  } // end of unmarshal method
  /**
   * Unpacks a Pdu from the underlying data.
   *
   * @throws java.nio.BufferUnderflowException if buff is too small
   * @see java.nio.ByteBuffer
   * @param buff The ByteBuffer at the position to begin reading
   * @since ??
   */
  public void unmarshal(java.nio.ByteBuffer buff) {
    super.unmarshal(buff);

    minefieldID.unmarshal(buff);
    requestingEntityID.unmarshal(buff);
    requestID = (short) (buff.get() & 0xFF);
    numberOfPerimeterPoints = (short) (buff.get() & 0xFF);
    pad2 = (short) (buff.get() & 0xFF);
    numberOfSensorTypes = (short) (buff.get() & 0xFF);
    dataFilter = buff.getInt();
    requestedMineType.unmarshal(buff);
    for (int idx = 0; idx < numberOfPerimeterPoints; idx++) {
      Point anX = new Point();
      anX.unmarshal(buff);
      requestedPerimeterPoints.add(anX);
    }

    for (int idx = 0; idx < numberOfSensorTypes; idx++) {
      TwoByteChunk anX = new TwoByteChunk();
      anX.unmarshal(buff);
      sensorTypes.add(anX);
    }
  } // end of unmarshal method