Version: 2022.3
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  • C#

Vector3.Reflect

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Declaration

public static Vector3 Reflect(Vector3 inDirection, Vector3 inNormal);

Parameters

inDirection The direction vector towards the plane.
inNormal The normal vector that defines the plane.

Description

Reflects a vector off the plane defined by a normal.

This method calculates the reflection vector using the following formula: v = inDirection - 2 * inNormal * dot(inDirection inNormal). The inNormal vector defines a plane. A plane's normal is the vector that is perpendicular to its surface. The inDirection vector is treated as a directional arrow coming into the plane. The returned value is a vector of equal magnitude to inDirection but with its direction reflected.


Reflection of a vector off a plane.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Transform originalObject; public Transform reflectedObject;

void Update() { // Makes the reflected object appear opposite of the original object, // mirrored along the z-axis of the world reflectedObject.position = Vector3.Reflect(originalObject.position, Vector3.right); } }