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Question by Harrisonhough · Jan 13, 2015 at 10:44 AM · vector3camera-movementdistancetranslate

Jump to position in front of an object

I want to my camera to jump to a position right in front of a particular object so you can "inspect that object". I currently have it set up that with raycasting you and point and select an object and jump to its position. However I wish to jump to a position just short of that object so that the player can look at it close up. I dont want to use a camera zoom function either. Any ideas for this? I know you can get the distance between two vectors and am wondering if I could somehow use that to travel a certain amount of that distance toward the object? Here is what I have in my code so far. I need this to go in the camJump function.

// Update is called once per frame void Update () { ray = new Ray(transform.position, transform.forward);

     if (Physics.Raycast(ray, out hit)) {
         print ("There is something in front of the object");
         myTarget = hit.collider.gameObject;
         //float dist = Vector3.Distance(myTarget.transform.position, transform.position);
         //print("Distance to other: " + dist);
     }
     else {
         if(myTarget != null)
             myTarget = null;
         print ("Theres nothing ahead");
     }



     if (Input.GetKeyUp (KeyCode.Space)){
         CamJump();
     
     }
             
     
 }

 void CamJump(){
     if(!zoomed && myTarget != null){
         oldPos = transform.position; 
         transform.position = myTarget.transform.position; //maybe myTarget.transform.position - 1? or something
         //transform.LookAt(myTarget);
         zoomed = true;
     }
     else{
         transform.position = oldPos;
         zoomed = false;
     }

 }
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Answer by Noah Dyer · Jan 13, 2015 at 08:13 PM

One easy way is to use transform.forward, and back up from that.

 oldPos = transform.position; 
 transform.position = myTarget.transform.position - transform.forward*someNumber;

forward is going to be a unit vector, so you'll probably need to scale it. someNumber can either be a hardcoded number based on your experimentation, or a dynamic value based on properties of myTarget (which will allow you to achieve better zoom for obejcts of wildly different size).

Hope that helps!

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