January 20, 2015, 11:16:25 am
You can, but it would take more time than I think would be of benefit. Also the terrain smoothing and terrain adjustment tools will not give you the same accuracy to match some meshes from AutoCAD.
.. to stretch the Lumion site to approximately match an accurate TIN?
Are you wanting to scale the Lumion terrain to any size of the TIN mesh?
The Lumion (editable) Terrain, where you can use the Terrain tools, is a fixed square of 2048mx2048m. If you work within that area, thats fine. But you cannot expand the Lumion terrain to match an imported mesh if it extends beyond those distances.
What most of our users do is import their terrain as a mesh from their modelling tool, and then work with that as a model in Lumion. Placing entourage and buildings etc on to the imported terrain mesh. That mesh may be many kilometres in diameter. The Lumion world size is 43km. So generally you would have a flat Lumion Terrain, then overlaid on top of that as an object is the exported mesh from AutoCAD.
You can set the surface to match the Lumion terrain texturing and 3D Grass by making it a Landscape Material. The imported mesh though is not editable with the Terrain tools.