/Main/src/Microsoft.Research.Visualization3D/MainLoops/TimeManager.cs

 1using System;
 2using System.Collections.Generic;
 3using System.Linq;
 4using System.Text;
 5using System.Windows.Threading;
 6using System.Diagnostics;
 7
 8namespace Microsoft.Research.Visualization3D.MainLoops
 9{
10    class TimeManager
11    {
12        private delegate void EmptyEventHandler();
13        public delegate void TimedEventHandler(object sender, TimedEventArgs e);
14        private long oldTime;
15        private long delta;
16        private float timeProportion = 100000.0f;
17        Stopwatch stopwatch;
18
19        private TimeEntity currentTimeEntity;
20
21        public TimeEntity Current
22        {
23            get 
24            {
25                long newTime = stopwatch.ElapsedTicks;
26                delta = newTime - currentTimeEntity.TotalTime.Ticks;
27                currentTimeEntity = new TimeEntity(TimeSpan.FromTicks(delta), TimeSpan.FromTicks(newTime));
28                return currentTimeEntity; 
29            }
30        }
31        
32       
33
34        public event TimedEventHandler Update;
35
36        public TimeManager()
37        {
38            currentTimeEntity = new TimeEntity(TimeSpan.FromMilliseconds(0), TimeSpan.FromMilliseconds(0));
39        }
40
41        private void RaiseUpdate(TimedEventArgs e)
42        {
43            if (Update != null)
44                Update(this, e);
45        }
46
47        public void Start()
48        {
49            stopwatch = Stopwatch.StartNew();
50            Dispatcher.CurrentDispatcher.BeginInvoke(new EmptyEventHandler(MainLoop), DispatcherPriority.ApplicationIdle, null);
51        }
52
53        private void MainLoop()
54        {
55            long newTime = stopwatch.ElapsedTicks;
56            delta = newTime - currentTimeEntity.TotalTime.Ticks;
57            currentTimeEntity = new TimeEntity(TimeSpan.FromTicks(delta), TimeSpan.FromTicks(newTime));
58            RaiseUpdate(new TimedEventArgs { TimeEntity = currentTimeEntity });
59            Dispatcher.CurrentDispatcher.BeginInvoke(new EmptyEventHandler(MainLoop), DispatcherPriority.ApplicationIdle, null);
60        }
61    }
62
63    public class TimedEventArgs
64    {
65        public TimeEntity TimeEntity
66        {
67            get;
68            set;
69        }
70    }
71}