August 10, 2015, 04:28:59 am
You can import other meshes such as trees using the Import Model feature to add them to the Imported Objects Library in Lumion.
However, models from other 3D modelling applications are generally not made or optimized for realtime 3D. They are very heavy for the polygon count. So, it's OK to use a tree one or a few times, but 10's and 100's of them duplicated in Lumion will cause the system to grind to a halt.
If you know how to reduce the polygon count without distorting the model then you should aim for say 10k or no more than 20k each. When reducing the polygon count, the trunk, or trunk and branches, should be done separately from the leaves. Generally the trunk it not too high a count, depending on who and how modelled, it's the individual leaves that are the main problem.
What modelling application are the trees from? What version of Lumion are you looking at using them in?