Based on the element's position of motion path, in my case ellipse, I want the scaling of the element. For example, the element that's on the front, I want it to scale 100%, when the same element moves to left side, it scales down to 75%, once it reaches the back, it scales down more to 50%. And when the element reaches the right position, scale it up to 75% again and when it is again on the front, again scale up to 100%. Now this behaviour is to be followed by each elements thats moving along the path.
For example, when content 1 is on the front, content 3 will be on the back, content 2 will be on the left and content 4 will be on the right. Now the scaling is such, content 1 is 100%, content 2 and content 4 are 75%, content 3 is 50%.