deserializePayload method

@override int deserializePayload(MapFeatureBuilder builder, ByteData byteData, Endian endianness, int offset,)

Call to deserialize only the payload, no header. The Builder is to allow passing the message to build into. returns a int with a serialized size

Implementation

@override
int deserializePayload(imc.MapFeatureBuilder builder, ByteData byteData,
    Endian endianness, int offset) {
  var byteOffset = offset;

  // field id
  var idSSize = byteData.getUint16(byteOffset, endianness);
  byteOffset += 2;
  var idDData = List.filled(idSSize, 0);
  for (var i = 0; i < idSSize; i++) {
    idDData[i] = byteData.getUint8(byteOffset++);
  }
  var idDecoded = utf8.decode(idDData);
  builder.id = idDecoded;
  // field featureType
  builder.featureType =
      imc.MapFeatureEnumFeatureType(byteData.getUint8(byteOffset));
  byteOffset += 1;
  // field rgbRed
  builder.rgbRed = byteData.getUint8(byteOffset);
  byteOffset += 1;
  // field rgbGreen
  builder.rgbGreen = byteData.getUint8(byteOffset);
  byteOffset += 1;
  // field rgbBlue
  builder.rgbBlue = byteData.getUint8(byteOffset);
  byteOffset += 1;
  // field feature
  var featureMMsgsNumber = byteData.getUint16(byteOffset, endianness);
  byteOffset += 2;
  builder.feature = [];
  for (var i = 0; i < featureMMsgsNumber; i++) {
    var featureSId = byteData.getUint16(byteOffset, endianness);
    byteOffset += 2;
    if (featureSId != imc.ImcId.nullId) {
      var pMsgBuilder = imc.messagesBuilders[
              imc.idsToMessages[featureSId] ?? imc.ImcId.nullId.toString()]
          ?.call()
          .newInstance(builder);
      var pMsgSerializer = imc.messagesSerializers[
              imc.idsToMessages[featureSId] ?? imc.ImcId.nullId.toString()]
          ?.call();
      if (pMsgBuilder != null && pMsgSerializer != null) {
        var mPSize = pMsgSerializer.deserializePayload(
            pMsgBuilder, byteData, endianness, byteOffset);
        byteOffset += mPSize;
        builder.feature.add(pMsgBuilder.build() as imc.MapPoint);
      }
    }
  }

  return byteOffset - offset;
}