Installed Surge, fixed compile errors, moved a bunch of external stuff into folder

Assets/External/Pixelplacement/Surge/Tween/TweenActions/ValueRect.cs

@@ -0,0 +1,60 @@
+/// <summary>
+/// SURGE FRAMEWORK
+/// Author: Bob Berkebile
+/// Email: bobb@pixelplacement.com 
+/// </summary>
+
+using UnityEngine;
+using System;
+using Pixelplacement;
+
+namespace Pixelplacement.TweenSystem
+{
+    class ValueRect : TweenBase
+    {
+        //Public Properties:
+        public Rect EndValue {get; private set;}
+
+        //Private Variables:
+        Action<Rect> _valueUpdatedCallback;
+        Rect _start;
+
+        //Constructor:
+        public ValueRect (Rect startValue, Rect endValue, Action<Rect> valueUpdatedCallback, float duration, float delay, bool obeyTimescale, AnimationCurve curve, Tween.LoopType loop, Action startCallback, Action completeCallback)
+        {
+            //set essential properties:
+            SetEssentials (Tween.TweenType.Value, -1, duration, delay, obeyTimescale, curve, loop, startCallback, completeCallback);
+
+            //catalog custom properties:
+            _valueUpdatedCallback = valueUpdatedCallback;
+            _start = startValue;
+            EndValue = endValue;
+        }
+
+        //Processes:
+        protected override bool SetStartValue ()
+        {
+            return true;
+        }
+
+        protected override void Operation (float percentage)
+        {
+            Rect calculatedValue = TweenUtilities.LinearInterpolate (_start, EndValue, percentage);
+            _valueUpdatedCallback (calculatedValue);
+        }
+
+        //Loops:
+        public override void Loop ()
+        {
+            ResetStartTime ();
+        }
+
+        public override void PingPong ()
+        {
+            ResetStartTime ();
+            Rect temp = _start;
+            _start = EndValue;
+            EndValue = temp;
+        }
+    }
+}