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Question by unity_21erushbrook · Jul 20, 2019 at 01:54 AM · c#parent-childcentering

How do I center a group of objects?

Hi,

I have a group of objects that changes based on user input and I need them to center when I run a function to do so. They are all children of their parent and they need to have their center be the parent's position. i.e. the center of their local positions needs to be 0, 0. How do I achieve this?

Thanks, Ethan

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Answer by unity_21erushbrook · Jul 20, 2019 at 01:59 AM

Problem solved! I had this working and I didn't even realize it.

For those who want to do a similar thing, I have this in a function...

     Bounds bounds = new Bounds();
   
     for (int i = 0; i < buildParentObject.transform.childCount; i++)
         bounds.Encapsulate(buildParentObject.transform.GetChild(i).transform.localPosition);
     for (int i = 0; i < buildParentObject.transform.childCount; i++)
         buildParentObject.transform.GetChild(i).Translate(-bounds.center);

It seems very inefficient but hey, it works!

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avatar image unity_21erushbrook · Jul 20, 2019 at 02:00 AM 0
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What it does is figures out the center of the localPosition and pushes them all negative that. So if the center was (2, 0, 0), it would push them back by (-2, 0, 0) and therefore end up on (0, 0, 0).

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