title: Increase thickness of a Line in Arkit SceneView
body: <p>I have functions like this:</p>
  
  <pre><code>func getdrawnHorLineFrom(pos1: SCNVector3, toPos2: SCNVector3) -&gt; SCNNode {
  
      let obj1 = SCNVector3(x: toPos2.x, y: toPos2.y, z:pos1.z)
      let line = lineFrom(vector: pos1, toVector: obj1)
      let lineInBetween1 = SCNNode(geometry: line)
      glLineWidth(15)
      return lineInBetween1  
  }
  </code></pre>
  
  <p>also:</p>
  
  <pre><code>func lineFrom(vector vector1: SCNVector3, toVector vector2: SCNVector3) -&gt; SCNGeometry {
  
      let indices: [Int32] = [0, 1]
      let source = SCNGeometrySource(vertices: [vector1, vector2])
      let element = SCNGeometryElement(indices: indices, primitiveType: .line)
      return SCNGeometry(sources: [source], elements: [element])
  }
  </code></pre>
  
  <p>Basically, I am trying to draw a line between two 3D Points, which are of type SCNVector3. The line drawn is a 'SCNGeometry' with a primitiveType 'line'.</p>
  
  <p>Now, I would like to increase my line thickness, such that it appears clearly. Also, I would like to know, if there is any way, I can make my line appear as 'dotted line'. I Inorder to increase the thickness of my lines tried to use 'glLineWidth() etc, but not successful.</p>
  
  <p>I would be really glad, if someone can help me out.</p>
  
  <p>Thanks in advance!</p>