Reintroduced type "Time" that should be used in the API to specify durations or time points.

Type "Time" is now an alias to "units::time::millisecond_t". The conversion functions as provided by "time_utils.h" are still present and revised accordingly."
Signed-off-by: Jupp Tscheak <jupp.tscheak@daimler.com>

MantleAPI/include/MantleAPI/Common/simulation_time.h

@@ -15,15 +15,15 @@
 #ifndef MANTLEAPI_COMMON_SIMULATION_TIME_H
 #define MANTLEAPI_COMMON_SIMULATION_TIME_H
 
-#include <units.h>
+#include <MantleAPI/Common/time_utils.h>
 
 namespace mantle_api
 {
 
 struct SimulationTime
 {
-    units::time::second_t current_sim_time{0};
-    units::time::second_t last_delta_time{0};
+    Time current_sim_time{0};
+    Time last_delta_time{0};
 };
 
 }  // namespace mantle_api

MantleAPI/include/MantleAPI/Common/spline.h

@@ -17,6 +17,7 @@
 #define MANTLEAPI_COMMON_SPLINE_H
 
 #include <MantleAPI/Common/floating_point_helper.h>
+#include <MantleAPI/Common/time_utils.h>
 #include <MantleAPI/Common/vector.h>
 #include <units.h>
 
@@ -36,8 +37,8 @@ struct SplineSegment
 
 struct SplineSection
 {
-    units::time::second_t start_time{0};
-    units::time::second_t end_time{0};
+    Time start_time{0};
+    Time end_time{0};
     /// @brief Represents the polynomial.
     ///
     /// The array stores in format \f$[a_3, a_2, a_1, a_0]\f$ for a polynomial in form

MantleAPI/include/MantleAPI/Common/time_utils.h

+/*******************************************************************************
+ * Copyright (c) 2021, Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+
+//-----------------------------------------------------------------------------
+/** @file  time_utils.h */
+//-----------------------------------------------------------------------------
+
+#ifndef MANTLEAPI_COMMON_TIME_UTILS_H
+#define MANTLEAPI_COMMON_TIME_UTILS_H
+
+#include <units.h>
+
+namespace mantle_api
+{
+using Time = units::time::millisecond_t;
+
+/// @brief Converts input in [s] to @ref Time.
+/// @tparam T Input type, eg. `double`.
+/// @param duration Input value
+/// @return Duration representing the given input in units of @ref Time.
+template <typename T>
+inline Time SecondsToTime(T duration)
+{
+    return units::convert<units::time::seconds, units::time::milliseconds>(duration);
+}
+
+/// @brief Converts input @ref Time to [s].
+/// @param time Time
+/// @return Duration in seconds representing the passed in @ref Time.
+inline double TimeToSeconds(const Time& time)
+{
+    return units::time::second_t{time}.value();
+}
+
+}  // namespace mantle_api
+
+#endif  // MANTLEAPI_COMMON_TIME_UTILS_H

MantleAPI/include/MantleAPI/EnvironmentalConditions/date_time.h

@@ -15,7 +15,7 @@
 #ifndef MANTLEAPI_ENVIRONMENTALCONDITIONS_DATETIME_H
 #define MANTLEAPI_ENVIRONMENTALCONDITIONS_DATETIME_H
 
-#include <units.h>
+#include <MantleAPI/Common/time_utils.h>
 
 namespace mantle_api
 {
@@ -23,7 +23,7 @@ namespace mantle_api
 // TODO: Delete this struct and use Time directly in Get/SetDateTime once the move to the MantleAPI is complete
 struct [[deprecated]] DateTime
 {
-    units::time::second_t date_time{0};
+    Time date_time{0};
 };
 
 }  // namespace mantle_api

MantleAPI/include/MantleAPI/Execution/scenario_info.h

@@ -15,7 +15,7 @@
 #ifndef MANTLEAPI_EXECUTION_SCENARIOINFO_H
 #define MANTLEAPI_EXECUTION_SCENARIOINFO_H
 
-#include <units.h>
+#include <MantleAPI/Common/time_utils.h>
 
 #include <map>
 #include <string>
@@ -25,7 +25,7 @@ namespace mantle_api
 
 struct ScenarioInfo
 {
-    units::time::second_t scenario_timeout_duration;
+    Time scenario_timeout_duration;
     std::string description;
     std::map<std::string, std::string> additional_information;
 };