82 lines
2.0 KiB
C#
82 lines
2.0 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace BF
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{
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[ExecuteInEditMode]
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[RequireComponent(typeof(RectTransform))]
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public class BFCircleLayout : MonoBehaviour
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{
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public float radius = 100;
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[Range(0, 360)]
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public float startAngle = 0;
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[Range(0, 360)]
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public float angle = 30;
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public int ActiveCount
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{
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get
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{
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var result = 0;
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for (var i = 0; i < rectTransform.childCount; i++)
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{
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var t = rectTransform.GetChild(i);
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if (t != null && t.gameObject.activeInHierarchy)
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{
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result++;
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}
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}
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return result;
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}
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}
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RectTransform rectTransform;
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List<RectTransform> children = new List<RectTransform>(4);
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void Start()
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{
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rectTransform = GetComponent<RectTransform>();
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Relayout();
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}
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void OnValidate()
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{
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Relayout();
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}
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public void Relayout()
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{
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#if UNITY_EDITOR
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if (rectTransform == null)
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{
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return;
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}
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#endif
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children.Clear();
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for (var i = 0; i < rectTransform.childCount; i++)
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{
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var rect = (RectTransform)rectTransform.GetChild(i);
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if (rect != null && rect.gameObject.activeInHierarchy)
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{
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children.Add(rect);
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}
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}
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var length = children.Count;
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for (int i = 0; i < length; i++)
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{
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var t = children[i];
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t.anchoredPosition = GetPosByIndex(i);
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}
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}
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public Vector2 GetPosByIndex(int index)
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{
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var a = Mathf.Deg2Rad * (index * angle + startAngle);
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var pos = new Vector2(radius * Mathf.Cos(a), Mathf.Sin(a) * radius);
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return pos;
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}
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}
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} |