Measurement script that takes a StartPosition and an EndPosition

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Assets/Measurement.cs

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+using System;
+using UnityEngine;
+using System.Collections;
+[ExecuteInEditMode]
+public class Measurement : MonoBehaviour {
+
+    public Vector3 StartPosition;
+    public Vector3 EndPosition;
+    private float HoleSize = 0.1f;
+    private Vector3 lineUp = new Vector3(0, 1, 0);
+    // Use this for initialization
+    void Start () {
+	
+	}
+	
+	// Update is called once per frame
+	void Update () {
+        Transform line1Transform = transform.FindChild("Line1");
+        LineRenderer line1Renderer = line1Transform.GetComponent<LineRenderer>();
+
+        Transform line2Transform = transform.FindChild("Line2");
+        LineRenderer line2Renderer = line2Transform.GetComponent<LineRenderer>();
+        
+        Vector3 middlePosition = (StartPosition + (EndPosition - StartPosition) / 2.0f);
+        
+        float magnitude = (EndPosition - StartPosition).magnitude;
+        Vector3 direction = Vector3.Normalize(EndPosition - StartPosition);
+
+        line1Renderer.SetPosition(0, StartPosition);
+        line1Renderer.SetPosition(1, middlePosition - (direction * HoleSize));
+        
+        line2Renderer.SetPosition(0, middlePosition  +(direction * HoleSize));
+        line2Renderer.SetPosition(1, EndPosition);
+
+        
+
+        Transform textTransform = transform.FindChild("Text");
+	    textTransform.position = middlePosition;
+
+        if (Camera.current != null)
+        {
+            textTransform.LookAt(Vector3.Normalize(textTransform.position - Camera.current.transform.position) + textTransform.position);
+            lineUp = Vector3.Normalize(Vector3.Cross(middlePosition - Camera.current.transform.position, EndPosition - StartPosition));
+        }
+
+        TextMesh textMesh = textTransform.GetComponent<TextMesh>();
+	    textMesh.text = magnitude.ToString("0.00") + "m";
+
+
+	    textMesh.characterSize = Mathf.Max(0.001f * Math.Min(1.0f , magnitude), 0.0005f);
+
+        HoleSize = Mathf.Max(0.1f * Math.Min(1.0f, magnitude), 0.05f);
+        
+        Transform line1BaseTransform = transform.FindChild("Line1Base");
+        LineRenderer line1BaseRenderer = line1BaseTransform.GetComponent<LineRenderer>();
+        
+        line1BaseRenderer.SetPosition(0, StartPosition + lineUp * 0.01f);
+        line1BaseRenderer.SetPosition(1, StartPosition - lineUp * 0.01f);
+
+
+        Transform line2BaseTransform = transform.FindChild("Line2Base");
+        LineRenderer line2BaseRenderer = line2BaseTransform.GetComponent<LineRenderer>();
+
+        line2BaseRenderer.SetPosition(0, EndPosition + lineUp * 0.01f);
+        line2BaseRenderer.SetPosition(1, EndPosition - lineUp * 0.01f);
+    }
+}

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