draw line and detect the intersection line renderer clone

Unity Engine
1

I’m drawing lines with the touch event but I need to detect the crossing of lines using line renderer this is my code:

function UpdateLine()
	{
	var mousePos3: Vector3 = Input.mousePosition;
	
		//currentPen = Instantiate(thePen, thePen.transform.position,thePen.transform.rotation);
	   currentPen.GetComponent(LineRenderer).SetWidth(0.2f, 0.2f);
	   currentPen.GetComponent(LineRenderer).SetVertexCount(linePoints.Count);
	  for(var i = lineCount; i < linePoints.Count; i++)
	  {
	    currentPen.GetComponent(LineRenderer).SetPosition(i, linePoints[i]);
	    
	  
	  }
	  currentPen.GetComponent(LineRenderer).materials[0].mainTextureScale = new Vector2 (linePoints.Count-1,1);
	  currentPen.GetComponent(LineRenderer).name = "Swipe";
	  lineCount = linePoints.Count;
	  
	  var hit2 : RaycastHit;
		var ray2 = Camera.main.ScreenPointToRay (mousePos3);
	  
		  if (!Physics.Raycast (ray2, hit2, 10000))
		  	
			return;
 
		//we've hit a sphere
		if(hit2.transform.gameObject.name == "Swipe")
		{
		
			Debug.Log("Hit the line");		
		}
	}

currentpen are my clones line renderer.

I need to hit between line renderer, I’m newbie and sorry for my English.

2

You will have to use some simple geometry.
http://lmgtfy.com/?q=Find+where+two+lines+intersect

3

can you give me an example about geomtry apply in line renderer gamobject unity?

4

If you look at the link it provides googles array of answers for this exact question.

If you look, there is a video, on the age about 3 hits in. Follow that exactly.

For your case, you will have 2 points per line. That is more than enough. Just come up with some equation.

You basic line equation is y=mx + b where m is the slope, rise and run, something you have, and b is the y intercept. Google around a bit.

5

So I have been racking my brain trying to figure this out, but I can not find an answer. Sorry. This situation is different from the examples I read, since you know factors but dont know others. It is an interesting question tho and I would love to know if someone else knows.

Good luck mang.

6

thanks dude for your answers