Random.insideUnitCircle 单位圆内

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public Vector2 newPosition = Random.insideUnitCircle * 5;
	public void Awake() {
		transform.position.x = newPosition.x;
		transform.position.y = newPosition.y;
	}
}

// Sets the position to be somewhere inside a circle
// with radius 5 and the center at zero.
//设置位置到圆内的某个地方并且中心点为0

var newPosition : Vector2 = Random.insideUnitCircle * 5;
transform.position.x = newPosition.x;
transform.position.y = newPosition.y;