以任何角度滑动检测 [英] Swipe detection in any angle

问题描述

有什么方法可以在任何角度检测iPhone中的滑动吗？ UISwipeGestureRecognizer 似乎只有4个方向。

如果我这样滑动：

Is there any way I can detect swipe in iPhone in any angle? UISwipeGestureRecognizer seems to have only 4 directions.
If I swipe like this:

\
 \
  \
   X

我希望它给我60度的东西，而不仅仅是像 UISwipeGestureRecognizer 那样。

我该怎么做？

I want it to give me something like 60 degrees and not just down like the UISwipeGestureRecognizer.
How can I do this?

推荐答案

您可以使用 UIPanGestureRecognizer 。当您检测到Ended状态时，您可以获得速度。速度分为x和y分量。您可以使用x和y分量来计算斜率m。

You can use a UIPanGestureRecognizer. When you detect the Ended state you can get the velocity. The velocity is broken into x and y components. You can use the x and y components to calculate the slope, m.

m =Δy/Δx

m = ∆y / ∆x

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