Update source to v6.14.19098.19271

opennurbs_cpp_base.h

@@ -26,4 +26,83 @@ bool operator==(const struct ON_UUID_struct& a, const struct ON_UUID_struct& b);
 bool operator!=(const struct ON_UUID_struct& a, const struct ON_UUID_struct& b);
 #endif
 
+class ON_CLASS ON_StopWatch
+{
+public:
+  ON_StopWatch() = default;
+  ~ON_StopWatch() = default;
+  ON_StopWatch(const ON_StopWatch&) = default;
+  ON_StopWatch& operator=(const ON_StopWatch&) = default;
+
+public:
+  enum class State : unsigned char
+  {
+    ///<summary>
+    /// The stopwatch is off.
+    ///</summary>
+    Off = 0, 
+
+    ///<summary>
+    /// The stopwatch is started and running. 
+    ///</summary>
+    Running = 1,
+
+    ///<summary>
+    /// The stopwatch has been started and stopped.
+    ///</summary>
+    Stopped = 2
+  };
+
+  /*
+  Description:
+    If the stopwatch is off or stopped, it is started. Otherwise nothing happens. 
+  */
+  void Start();
+
+  /*
+  Description:
+    If the stopwatch is running, then it is stopped. Otherwise nothing happens. 
+  Returns:
+    If the stopwatch was running, the elapsed time from the most recent Start().
+    Otherwise, 0.0 is returned.
+  */
+  double Stop();
+
+  /*
+  Description:
+    The stopwatch is reset and turned off. Any previously set times are lost.
+  */
+  void Reset();
+
+  /*
+  Returns:
+    Current state of the stopwatch.
+  */
+  ON_StopWatch::State CurrentState() const;
+
+
+  /*
+  Returns:
+    The elapsed time in seconds.
+  Remarks:
+    If the stopwatch is running, the elapsed time is the duration from the most recent Start() to now.
+    If the stopwatch is stopped, the elapsed time is the duration between the most recent Start() and Stop().
+    If the stopwatch is off, the elapsed time is zero.
+  */
+  double ElapsedTime() const;
+
+private:
+  // current state
+  ON_StopWatch::State m_state = ON_StopWatch::State::Off;
+#pragma ON_PRAGMA_WARNING_PUSH
+#pragma ON_PRAGMA_WARNING_DISABLE_MSC( 4251 ) 
+  // C4251: ... : class 'std::...' 
+  //        needs to have dll-interface to be used by clients ...
+  // m_start and m_stop are private and all code that manages them is explicitly implemented in the DLL.
+  std::chrono::high_resolution_clock::time_point m_start; // most recent Start() time.
+  std::chrono::high_resolution_clock::time_point m_stop; // most recent Stop() time.
+#pragma ON_PRAGMA_WARNING_POP
+};
+
+
 #endif