May 13, 2011, 01:37:43 pm
I am not sure if this would not be better in the "Importing" section - if so, please, a mod feel free to move the topic.
Anyway... SketchUp collada export is basically "optimised" for Google Earth (as we know). Although in a SketchUp file, you may only find a single instance for a certain material, when exported, a material may be doubled/tripled/quadrupled in case you also use it on groups/components.
Although the general rule of thumb is to apply materials on faces (this is also the only way to add correct UV mapping / texture positioning to them), when in a rush, people may tend to paint whole groups/components in order to save time.
Now this is where you lose time in Lumion (or any other rendering app where you use collada files) as SU will not only rename all your materials (I cannot get this - we have been complaining about this for ages but again, GE optimization...) but will create a new material for your group/component materials as well. Often you do not even get what you are trying to tweak in Lumion (i.e. what is highlighted and what not).
In case someone has already screwed his model, there is a plugin that removes group/component materials
(with the option to apply them straight onto the faces).
Sorry but this plugin does not seem to be hosted in the Ruby Library Depot
so non SCF members will need to register to download.
Some materials (twisted, sheared etc) are also duplicated / "multiplicated" - I will try to fin the best solution for those, too (mostly pre-triangulation helps but not always)