Legacy Documentation: Version 5.4
LanguageEnglish
  • C#
  • JS

Script language

Select your preferred scripting language. All code snippets will be displayed in this language.

Vector3.ClampMagnitude

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Sumbission failed

For some reason your suggested change could not be submitted. Please try again in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

public static function ClampMagnitude(vector: Vector3, maxLength: float): Vector3;
public static Vector3 ClampMagnitude(Vector3 vector, float maxLength);

Parameters

Description

Returns a copy of vector with its magnitude clamped to maxLength.

	// Move the object around with the arrow keys but confine it
	// to a given radius around a center point.
	var centerPt: Vector3;
	var radius: float;
	
	
	function Update() {
		// Get the new position for the object.
		var movement = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
		var newPos = transform.position + movement;
		
		// Calculate the distance of the new position from the center point. Keep the direction
		// the same but clamp the length to the specified radius.
		var offset = newPos - centerPt;
		transform.position = centerPt + Vector3.ClampMagnitude(offset, radius);
	}
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Vector3 centerPt; public float radius; void Update() { Vector3 movement = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical")); Vector3 newPos = transform.position + movement; Vector3 offset = newPos - centerPt; transform.position = centerPt + Vector3.ClampMagnitude(offset, radius); } }