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Question by Notter · Nov 29, 2015 at 11:36 AM · ui imagepositioningrecttransform

How to get UI RectTransform bottom Y position?

Hello, my goal is to position an object, at the bottom of another object, through a script.

but i'm having trouble getting the correct position. Since the RectTransform position is Relative to the pivot, trying to get RectTransform.Ymax, doesn't get me the correct point. I think it gives a local point relative to the pivot.

I found out that with Tranform.GetWorldCorners(), I can get the corners sand through that, the bottom Y. But i was wondering if there is an easier and better way?

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avatar image Notter · Nov 29, 2015 at 03:46 PM 0
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any help? :X

avatar image Aggrojag Notter · Nov 30, 2015 at 04:16 AM 0
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There's no good way of doing this that I've personally found. Everything dealing with UI seems to be relative to scale and pivot point (in some methods parent positioning effects it as well if I recall correctly). It seems you have to account for this in your code somehow. I'll show an example if necessary, too lazy to open up the project that does this right at this time.

avatar image Artifact-Jesse Notter · Aug 19, 2016 at 07:52 PM 0
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I'm wrestling with this right now. It's a nightmare. I'll post here if I find a solution.

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Answer by hexagonius · Feb 26, 2018 at 11:34 AM

I just used the same way

 Vector3[] corners = new Vector3[4];
 yourRectTransform.GetWorldCorners(corners);
 Vector3 worldBottomCenter = Vector3.Lerp(corners[0], corners[3], 0.5f);
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