iTween help getting straight transition to points

I'm not sure how to go about doing this. Firstly, I am using c# and I have a laser that I want to move along the outer perimeter of our top down board. I thought that I would be able to do this easily with iTween but I clearly am not getting something here I am using the below code:

Code (csharp):

1. iTween.MoveTo(myLaser, iTween.Hash("path", new[] { new Vector3(-150, 0, -55), new Vector3(82, 0, -55),
2.                         new Vector3(82, 0, 70), new Vector3(-150, 0, -55) }, "orienttopath", true, "time", 20,
3.                         "looptype", iTween.LoopType.loop, "easetype", iTween.EaseType.linear));

I just want the laser to move on a straight path from vector to vector. When reaching the next point, I would like to rotate the laser and continue to the next point. I think the issue is that I am passing the points as an array and therefore it is drawing the cat-mull path which is adding a curve to my path, but Im unsure as to how to get around this. I thought the easetype would fix that, but I went through all of them and i was just getting different acceleration. Any ideas? Thanks everyone!


**** EDIT ****
I have done the below and it works as I want, well...not rotating yet, but just unsure if it is the best way to do it. Just curious what you all think. Thanks again!

Code (csharp):

1. void Move1()
2.     {
3.         iTween.MoveTo(myLaser, iTween.Hash("position", new Vector3(-150, 0, -80), "orienttopath", true, "time", 5,
4.                        "looptype", iTween.LoopType.none, "oncompletetarget", this.gameObject, "oncomplete", "Move2",
5.                        "easetype", iTween.EaseType.linear));
6.     }
7.  
8.     void Move2()
9.     {
10.         iTween.MoveTo(myLaser, iTween.Hash("position", new Vector3(82, 0, -80), "orienttopath", true, "time", 5,
11.                         "looptype", iTween.LoopType.none, "oncompletetarget", this.gameObject, "oncomplete", "Move3",
12.                         "easetype", iTween.EaseType.linear));
13.     }
14.  
15.     void Move3()
16.     {
17.         iTween.MoveTo(myLaser, iTween.Hash("position", new Vector3(82, 0, 70), "orienttopath", true, "time", 5,
18.                         "looptype", iTween.LoopType.none, "oncompletetarget", this.gameObject, "oncomplete", "Move4",
19.                         "easetype", iTween.EaseType.linear));
20.     }
21.  
22.     void Move4()
23.     {
24.         iTween.MoveTo(myLaser, iTween.Hash("position", new Vector3(-150.0f, 0, 70.0f), "orienttopath", true, "time", 5,
25.                         "looptype", iTween.LoopType.none, "oncompletetarget", this.gameObject, "oncomplete", "Move1",
26.                         "easetype", iTween.EaseType.linear));
27.     }

 

I'm looking forward to do the same thing, your solution may works but seems very heavy. (imagine you have a hundred points path, you can't do 100 "move" methods). We just need to figure out where itween uses the Catmull-Rom splines to make the path.

 

Can anyone tell me what is the Catmull-Rom??? I have the same problem. Thank you