CODEWITHSUNDEEP
iosobjective-cswiftuiviewcore-animation
Sven Bauer
Sven Bauer

Reputation: 1689

How to draw an Image in Perspective?

I found an app which has an arrow which is used as a compass. The arrow moves when I rotate my device. You can see it in the following screen shots:

enter image description here

enter image description here

You can see that the size of the arrow changes depending on its direction as well as the gray shadow behind the arrow.

How can I create a 3D arrow with Swift or Objective-C? How can I make an image to appear 3D?

Upvotes: 0

Views: 702

Answers (1)

Duncan C
Duncan C

Reputation: 131503

That's more like 2.5D, as it's sometimes called. It's a 2D image that's projected in 3D space. You can do that by applying a 3D transform to an image view's layer, and then modifying the m34 entry in the transform to a small negative value that gives the perspective. A value like -1/200 is a good starting point.

I suggest you look up CATransform3D perspective on Google. When I do that search the first link looks quite promising: How do I apply a perspective transform to a UIView?

Upvotes: 2

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