Use easing within the carousel view sliding

projects/mtg/include/CarouselDeckView.h

@@ -7,13 +7,7 @@
 class CarouselDeckView : public DeckView
 {
 private:
-    enum AnimationStage{
-        NONE = 0,
-        SLIDE_UP,
-        SLIDE_DOWN
-    };
-
-    static const float scroll_speed;
+    static const float slide_animation_duration;
 
 public:
     CarouselDeckView();
@@ -40,9 +34,8 @@ public:
     //maintains the current rotation for fluid animations
 private:
     InOutQuadEasing mScrollOffset;   //[-1,1]. defines the current rotation of the cards
-    float mSlide;      //[-1,1]. defines, the y-offset of the cards
+    InOutQuadEasing 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
 };
 
 #endif //_CAROUSEL_DECK_VIEW_H_