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);
}
}
}