Question

JavaScript => static var PI: float;
C# => static float PI;

Description 描述

The infamous 3.14159265358979… value (Read Only).

PI（读pai），也就是圆周率（π）的值3.14159265358979323846…（只读）

JavaScript:

var radius : float = 5;
 
function Start() { 
	var perimeter : float = 2 * Mathf.PI * radius; 
	Debug.Log("The perimeter of the circle is: " + perimeter); 
}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public float radius = 5;
    void Start() {
        float perimeter = 2 * Mathf.PI * radius;
        Debug.Log("The perimeter of the circle is: " + perimeter);
    }
}

Mathf