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Question by ce7ec · Jan 21, 2015 at 09:04 AM · raycasttransformposition

JS Dynamic Height Camera vibrating =(

Hello guys, I'm doing RTS game and I need dynamic height camera. Okay, it is changing it's height, but! When it stabilize it's vibrating.

 var hit : RaycastHit;
 var curDistance : float;
 if (Physics.Raycast(transform.position, -transform.position, hit)){
     curDistance = Vector3.Distance(transform.position, hit.point);
 }

 if(curDistance != cameraDistance){
     var difference = cameraDistance - curDistance;
         transform.position = Vector3.Lerp(transform.position, transform.position + new Vector3(0,difference,0), Time.deltaTime);
 }


My idea is to not allow to readjust height if distance is not equals than -1 - 1 (numbers between -1 and 1), but I have no clue how to type it in if. if( difference != Range(-1, 1)) ?

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Answer by andrew-lukasik · Jan 21, 2015 at 09:35 AM

First: Instead of using "-transform.position" as direction use "Vector3.down". "-transform.position" will (probably) point down but for sure - not straight down (!)

Second thing: Do not Ever use Time.deltaTime as parameter in Vector3.Lerp because this is not what Lerp needs there (and it caused your camera to vibrate). Use Vector3.MoveTowards instead

 transform.position = Vector3.MoveTowards( transform.position , hit.point+Vector3.up*cameraDistance, 0.1f );

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avatar image andrew-lukasik · Jan 21, 2015 at 09:52 AM 0
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Ad. "$$anonymous$$y idea is to not allow to readjust height if distance is not equals than -1 - 1 (numbers between -1 and 1), but I have no clue how to type it in if. if( difference != Range(-1, 1)) ?"

I'm not exactly sure what you mean here. But you're saying something about distance. And you can measure distance between two positions using Vector3.Distance( pos1 , pos2 ). So proper syntax would looks like this:

 //if distance is greater than 1:
 if( Vector3.Distance( pos1 , pos2 ) > 1f ) {
     //then do something here
 }
 else {
     //or if it's not true, do something here
 }

ps: You probably wont need to add that anymore.

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