port from perforce

aiwaz/AiwazAnimator/AnimationManager.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.ComponentModel;
+using System.Collections.ObjectModel;
+
+namespace AiwazAnimator
+{
+    public class AnimationManager : INotifyPropertyChanged
+    {
+        private float _currentTime;
+        public float CurrentTime
+        {
+            get { return _currentTime; }
+            set
+            {
+                _currentTime = value;
+                OnPropertyChanged("CurrentTime");
+            }
+        }
+
+        private bool _animating;
+        public bool Animating
+        {
+            get { return _animating; }
+            set
+            {
+                _animating = value;
+                OnPropertyChanged("Animating");
+            }
+        }
+
+        public ObservableCollection<Animation> Animations { get; set; }
+
+        public AnimationManager()
+        {
+            _animating = false;
+            _currentTime = 0.0f;
+            Animations = new ObservableCollection<Animation>();
+            Animations.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler((o, e) =>
+            {
+                OnPropertyChanged("Animations");
+            });
+        }
+
+        public void Start()
+        {
+            Animating = true;
+        }
+
+        public void Stop()
+        {
+            CurrentTime = 0.0f;
+            Animating = false;
+        }
+
+        public void Animate(float DeltaTime)
+        {
+            if (!Animating)
+                return;
+
+            CurrentTime += DeltaTime;
+            foreach (Animation a in Animations)
+            {
+                a.Animate(CurrentTime);
+            }
+        }
+
+        protected virtual void OnPropertyChanged(string propertyName)
+        {
+            if (PropertyChanged != null)
+                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+    }
+}