public static Vector3 Lerp (Vector3 a, Vector3 b, float t);



使用插值 t 在点 ab 之间进行插值。参数 t 限制在范围 [0, 1] 内。这最常用于查找占两个终端之间距离特定百分比的点(例如,以便在这些点之间逐步移动对象)。

返回的值等于 (b - a) * t。 当 t = 0 时,返回 t。 当 t = 1 时,返回 t。 当 t = 0.5 时,返回 ab 中间的点。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { // Transforms to act as start and end markers for the journey. public Transform startMarker; public Transform endMarker;

// Movement speed in units per second. public float speed = 1.0F;

// Time when the movement started. private float startTime;

// Total distance between the markers. private float journeyLength;

void Start() { // Keep a note of the time the movement started. startTime = Time.time;

// Calculate the journey length. journeyLength = Vector3.Distance(startMarker.position, endMarker.position); }

// Move to the target end position. void Update() { // Distance moved equals elapsed time times speed.. float distCovered = (Time.time - startTime) * speed;

// Fraction of journey completed equals current distance divided by total distance. float fractionOfJourney = distCovered / journeyLength;

// Set our position as a fraction of the distance between the markers. transform.position = Vector3.Lerp(startMarker.position, endMarker.position, fractionOfJourney); } }