Use easing within the carousel views scrolling

It is visible if you scroll more than one card

projects/mtg/include/CarouselDeckView.h

@@ -2,6 +2,7 @@
 #define _CAROUSEL_DECK_VIEW_H_
 
 #include "DeckView.h"
+#include "Easing.h"
 
 class CarouselDeckView : public DeckView
 {
@@ -9,8 +10,7 @@ private:
     enum AnimationStage{
         NONE = 0,
         SLIDE_UP,
-        SLIDE_DOWN,
-        SCROLL_TO_SELECTED
+        SLIDE_DOWN
     };
 
     static const float scroll_speed;
@@ -39,7 +39,7 @@ public:
 
     //maintains the current rotation for fluid animations
 private:
-    float mRotation;   //[-1,1]. defines the current rotation of the cards
+    InOutQuadEasing mScrollOffset;   //[-1,1]. defines the current rotation of the cards
     float mSlide;      //[-1,1]. defines, the y-offset of the cards
     int mScrollTarget; //0 <= mScrollTarget < mCards.size(). defines where to scroll to if the current animation is a scroll animation
     AnimationStage mStage; // state machine state. for animation purposes