Legacy Documentation: Version 2018.1 (Go to current version)
  • C#
  • JS

Script language

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


Suggest a change


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.


Submission failed

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



public var normal: Vector3;
public Vector3 normal;


The normal of the surface the ray hit.

// Calculate the reflection of a "laser beam" off a clicked object.

// The object from which the beam is fired. The incoming beam will // not be visible if the camera is used for this! var gunObj: Transform;

function Update () { if (Input.GetMouseButton(0)) { var hit: RaycastHit; var ray = Camera.main.ScreenPointToRay(Input.mousePosition);

if (Physics.Raycast(ray, hit)) { // Find the line from the gun to the point that was clicked. var incomingVec = hit.point - gunObj.position;

// Use the point's normal to calculate the reflection vector. var reflectVec = Vector3.Reflect(incomingVec, hit.normal);

// Draw lines to show the incoming "beam" and the reflection. Debug.DrawLine(gunObj.position, hit.point, Color.red); Debug.DrawRay(hit.point, reflectVec, Color.green); } } }
no example available in C#

Did you find this page useful? Please give it a rating: