Very simple implementation (with example code) of a state-from-isd method.

src/eal.cpp

+
+#include <json.hpp>
+
+using json = nlohmann::json;
+
+
+std::string eal::constructStateFromIsd(const std::string positionRotationData) const
+{
+   // Parse the position and rotation data from isd
+   json isd = json::parse(positionRotationData);
+   json state;
+
+   state["m_w"] = isd.at("w");
+   state["m_x"] = isd.at("x");
+   state["m_y"] = isd.at("y");
+   state["m_z"] = isd.at("z");
+
+   return state.dump();
+}