Why does an imported model change in all the scenes it's used in?

Article Details



Poster: Morten
Article ID: 631
Posted: Wed 03 Feb 2016
Approved: Yes

QUESTION
Why does an imported model change in all the scenes it's used in?

ANSWER
In Lumion, models are saved as "references" in your scenes. So what does that mean?

Well, let's say you import a fence model from SketchUp and use it in a scene. This model will be saved locally on your PC in Documents/Lumion (Version)/Library.



Every time you re-import the fence model or change its materials/textures in Lumion, the model files in My Documents/Lumion (Version)/Library will be saved (and overwritten if they already exist). The consequence is that the fence will be updated in all the scenes that the fence is used in.

If you use the "Save Scene" function, you're only saving the scene, not the models. As mentioned above, the models are automatically saved every time you re-import them or change the materials, so there's no need to save them again when you only want to save the scene. A saved scene contains all of the model positions, layer information, the terrain state, Movie/Photo effects and so on.

However, if you use the "Save Scene and Models" function, you're saving the scene and a "snapshot" of the models. This snapshot can be transferred to other PCs as a single file (in LS format). If you import this file, Lumion will tell you if any of the existing model files in My Documents/Lumion (Version)/Library will be overwritten if you go ahead. In other words, the "Save Scene and Models" function is ideal if you need to transfer a scene and all of the imported models in that scene to another PC, or if you just want to make a back-up.



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