Get Collider

Sample.cs

using UnityEngine;

public class Sample : MonoBehaviour
{
	//判定の大きさ
	public float radius;

	//取得する対象となるレイヤー
	public LayerMask targetLayer;

	//サンプルとしてAnimator(Humanoidアバター)を用いて右手に判定を作る
	protected Animator m_Animator;
	protected Transform m_Avator_RightHand;

	//取得するコライダーの領域を確保
	protected Collider[] m_OverlapResult = new Collider[16];

	void Start() {
		m_Animator = GetComponent<Animator>();

		if (m_Animator.isHuman) {
			m_Avator_RightHand = m_Animator.GetBoneTransform(HumanBodyBones.RightHand);
		}
	}

	void Update() {
		Vector3 worldPos = m_Avator_RightHand.transform.position;

		//Physics.Overlap~NonAllocは取得しているコライダーの数を返す
		int count = Physics.OverlapSphereNonAlloc(worldPos, radius, m_OverlapResult, targetLayer, QueryTriggerInteraction.Ignore);

		for (int i = 0; i < count; ++i) {
			//取得したコライダー
			Debug.Log(m_OverlapResult[i].gameObject);
		}
	}
}