Hi Sunil,
I raised your question to the engineers and here is what they respond.
"The View class exposes several properties that should help. The Origin and ViewDirection are expoed as separate properties, but I believe the near clip plan is generally at an offset from the view origin. The CropBox property will allow access to a BoundingBoxXYZ object from which you can extract the origin , view direction and the offset of the near clip plane."
Here I'm providing you a link to Geometry Helper Class, Scroll down to the View Sub-Topic, might give you and idea on what the engineers suggested.
http://help.autodesk.com/view/RVT/2016/ENU/?guid=GUID-78445211-E211-4E27-B080-BE9FA3C50631
Hope it helps
cheers,