Excellent post by Dieter Vermeulen describing how to use Revit and Dynamo to analyze and report on ‘line of sight’ using a Revit family and some nice vector nodes. You can download the resources from this link.

Quote:
When a structural engineer, like me, hears or reads the word “analysis” then you will get full attention. That happened when I was discussing some architectural topics with my colleague…

Source: Line Of Sight Analysis with Revit and Dynamo