port from perforce

aiwaz/AiwazAnimator/Animations/LinearAnimation.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace AiwazAnimator.Animations
+{
+    class LinearAnimation
+        : Animation
+    {
+        public LinearAnimation()
+            : base()
+        {
+            AnimationName = "Linear";
+        }
+
+        protected override float Calculate(float NormalizedTime)
+        {
+            return StartValue * (1.0f - NormalizedTime) + EndValue * NormalizedTime;
+        }
+    }
+}