moved a few Extras projects into Extras/obsolete.

Extras/obsolete/GPUphysics/clock.h

@@ -0,0 +1,45 @@
+
+/*
+  High precision clocks.
+*/
+
+class Clock
+{
+  double start ;
+  double now   ;
+  double delta ;
+  double last_time ;
+  double max_delta ;
+  
+#ifdef GPUP_WIN32
+  static double res ;
+  static int perf_timer ;
+  void initPerformanceTimer () ;
+#endif
+
+  double getRawTime () const ;
+
+public:
+
+  Clock () { reset () ; }
+
+  void reset ()
+  {
+#ifdef GPUP_WIN32
+    initPerformanceTimer () ;
+#endif
+    start     = getRawTime () ;
+    now       = 0.0 ;
+    max_delta = 0.2 ; 
+    delta     = 0.0000001 ;  /* Faked so stoopid programs won't div0 */
+    last_time = 0.0 ;
+  }
+
+  void   setMaxDelta  ( double maxDelta ) { max_delta = maxDelta ; }
+  double getMaxDelta  () const { return max_delta ; }
+  void   update       () ;
+  double getAbsTime   () const { return now   ; }
+  double getDeltaTime () const { return delta ; }
+  double getFrameRate () const { return 1.0 / delta ; }
+} ;
+