リングコマンド的なUIの羅列

SimpleCircleLayoutGroup.cs

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class SimpleCircleLayoutGroup : UIBehaviour, ILayoutGroup 
{
	public float radius = 100;
	public float offsetAngle;

	protected override void OnValidate ()
	{
		base.OnValidate ();
		Arrange ();
	}

	// 要素数が変わると自動的に呼ばれるコールバック
	#region ILayoutController implementation
	public void SetLayoutHorizontal (){}
	public void SetLayoutVertical ()
	{
		Arrange ();
	}
	#endregion

	void Arrange()
	{
		float splitAngle = 360 / transform.childCount;
		var rect = transform as RectTransform;

		for (int elementId = 0; elementId < transform.childCount; elementId++) {
			var child = transform.GetChild (elementId) as RectTransform;
			float currentAngle = splitAngle * elementId + offsetAngle;
			child.anchoredPosition = new Vector2 (
				Mathf.Cos (currentAngle * Mathf.Deg2Rad), 
				Mathf.Sin (currentAngle * Mathf.Deg2Rad)) * radius;
		}
	}
}