static var PI : float
Description描述
The infamous 3.14159265358979... value (Read Only).
PI（读pai）的值，也就是圆周率（π）的值3.14159265358979323846...（只读）
using UnityEngine;
using System.Collections;
public class example : MonoBehaviour {
public float radius = 5;
void Start() {
float perimeter = 2 * Mathf.PI * radius;
Debug.Log("The perimeter of the circle is: " + perimeter);
}
}var radius : float = 5;
function Start() {
var perimeter : float = 2 * Mathf.PI * radius;
Debug.Log("The perimeter of the circle is: " + perimeter);
}