It is an interesting add-in for Revit that can import point data into the conceptual environment. It was written to “narrow the gap between computational concept design, terrestrial laser scanning and Building Information Modeling.”
Version 2.1 has just been released (25 May 2013)
GreenSpider conveniently parses ASCII text files representing 3D vertexes, whether generated by computational modeling software or terrestrial laser scanning equipment.
GSpoints and GScurves. The first one simply imports vertex point cloud as reference points in mass modeling environment, while the second traces a spline interpolation among imported points sorted through a TSP process, in order to build surfaces after recursive .GSP imports.
Decimated laser scanner point clouds are imported this way in Revit as many times as needed (using a reset function every time in Translator module), and generated curves can be used to originate surfaces very close to their real geometry.