如何检测UIImageview的动画方向？

Question

What is the best way to detect the direction of a uiimageview?

I want to detect when a uiimageview is 'falling' - this is because it follows an arc animation for jumping purposes, i only want to detect when it is 'falling' and intersecting a floor, rather than when it jumps and intersects the floor.

I'm guessing there is no built in method to do this.

Thanks in advance!

Answer 1

The best thing to do, I found, was to draw a path and test it for collision with any above 'floors' or platforms. Then if it does collide, draw another path with an end point matching the y position of the collided platform.