Linearly interpolates between two points.
Interpolates between the points a
and b
by the interpolant t
. The parameter t
is clamped to the range [0, 1]. This is most commonly used to find a point some fraction of the way along a line between two endpoints (e.g. to move an object gradually between those points).
The value returned equals (b - a) * t.
When t
= 0 returns a
.
When t
= 1 returns b
.
When t
= 0.5 returns the point midway between a
and b
.
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); } }
関連項目: Slerp, LerpUnclamped.
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.