@cmeed said:
I have 2 questions you may know the answer to
have you tried getting a textured sphere or a shere with an image on it? I tried but when UE4 compiled shaders it took ages, it took each individual face as a new texture - I've tried a few times all the same
I did import more blobby objects into UE but.. I needed to pass them through Blender first.
SketchUp does 'strange things' with mapping coordinates / textures on blobby objects - they seem to turn into small unique materials when exporting to obj (look into the export folder and you will see lots of small textures).
Unreal Engine needs a second uv channel for storing the lightmaps. Sketchup can't create that 2nd channel so Unreal automatically creates it during import (if you have that option checked) by copying the first channel and re-arraging it into the 0-1 UV space(no repetition).
Result in UE: lots of small unique materials, all with a default size lightmap which takes 'ages'.
In short: for blobby objects, I export to obj -> import in Blender -> create a second UV channel for the lightmap with everything layed out flat, all into the 0-1 UV space -> import into UE with the option 'generate lightmaps' NOT checked -> succes
@cmeed said:
the other question
I'm looking to import the whole model and not place individual items ( i do this by dragging all the meshes that have been imported onto the view port (easy)) but my scale is really off - do you know the method of setting this up on export or during import (there's an option (for .obj) to use model units or millimetres etc and a scale option in UE4)
Internally UE uses centimeters. I normally model in mm's myself so during fbx-export from SU, in the export options I set the units to cm's.
@cmeed said:
tonight i've only exported as an .obj, have you used .fbx?
(that's 3 questions)
In SU, I export to fbx for more simple objects like walls, floors, etc
I use obj for objects that are more complex or causing trouble in UE and run them through Blender first for applying an extra Lightmap UV channel. From Blender I export to fbx again.
It seems complicated but once you have this workflow going its easy. Maybe have another read in my quickstart that I posted a while ago in this thread? http://sketchucation.com/forums/viewtopic.php?f=80%26amp;t=57392%26amp;start=60#p576468
Good luck! If you have any more questions, fire away