Ui Button in World Space Sorting Order?

[Kabendji]

Hello

Let me explain my problem.

From a database I create buttons in a World Space.
The problem is that some buttons are displayed in front of other. (screenshot)

Personally I would like the closest buttons from the camera to be in front of other and the only way I have found to do that may be overkill.
Continually reorganize the hierarchy depending on the distance from the camera.

I’m looking for another way.

Thanks for your help.

[Kabendji]

First part of a Solution

The solution is actually quite simple: all we need to do is add a Canvas component to the child objects; then we tick the Override Sortingcheckbox and make sure the Sort Order parameter is larger than that of our root Canvas.

Source : Geisha Tokyo Engineer's Blog - Unity 4.6 UI Tip: Override sorting with Canvas

From there all I have to do it’s reorder according of the distance of the camera

Still thinking it’s overkill, so if u have a solution

Edit : Using AddComponent makes me lose too much fps

[Kabendji]

I still use AddComponent until I found a better way.

But I got another issue, how to AddComponent or AddComponent?