Question

JavaScript => static function SmoothDamp(current: Vector3, target: Vector3, currentVelocity: Vector3, smoothTime: float, maxSpeed: float = Mathf.Infinity, deltaTime: float = Time.deltaTime): Vector3;
C# => static Vector3 SmoothDamp(Vector3 current, Vector3 target, Vector3 currentVelocity, float smoothTime, float maxSpeed = Mathf.Infinity, float deltaTime = Time.deltaTime);

Parameters 参数

current	The current position. 当前位置坐标。
target	The position we are trying to reach. 想要达到的位置。
currentVelocity	The current velocity, this value is modified by the function every time you call it. 当前速度，该值由每次调用该函数时修改。
smoothTime	Approximately the time it will take to reach the target. A smaller value will reach the target faster. 达到目标大约花费的时间。 一个较小的值将更快达到目标。
maxSpeed	Optionally allows you to clamp the maximum speed. 选择允许你限制的最大速度。
deltaTime	The time since the last call to this function. By default Time.deltaTime. 自上次调用这个函数。默认情况下是 Time.deltaTime。

Description 描述

Gradually changes a vector towards a desired goal over time.

随着时间的推移，逐渐改变一个向量朝向预期的目标。

The vector is smoothed by some spring-damper like function, which will never overshoot. The most common use is for smoothing a follow camera.

向量由一些像弹簧阻尼器函数平滑，这将永远不会超过。最常见的用途是平滑跟随相机。

JavaScript:

	// Smooth towards the target	var target : Transform;
	var smoothTime = 0.3;
	private var velocity = Vector3.zero;
 
	function Update () {
		// Define a target position above and behind the target transform
		var targetPosition : Vector3 = target.TransformPoint(Vector3(0, 5, -10));
 
		// Smoothly move the camera towards that target position
		transform.position = Vector3.SmoothDamp(transform.position, targetPosition,
		                             velocity, smoothTime);
	}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public Transform target;
    public float smoothTime = 0.3F;
    private Vector3 velocity = Vector3.zero;
    void Update() {
        Vector3 targetPosition = target.TransformPoint(new Vector3(0, 5, -10));
        transform.position = Vector3.SmoothDamp(transform.position, targetPosition, ref velocity, smoothTime);
    }
}

Vector3