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Greetings!

Am using Wings 3D mostly as a converter from .obj to .bzw and have noticed that every face in the model is divided up into triangles, as if the program connected every vertex to every other vertex on came plane. Is there an easy way to un-do this? Only way i could figure out is to manually select edges and delete them, but that takes a long time.
Have tried "Untriangulate" function as well, but it seems to do nothing.

Main reason why i would like to un-triangulate the faces is so textures would look correctly in the map.

The file was exported to .obj format from SketchUp using "su2objmtl" plugin.

As far as I know there isn't any native way to do it, though I believe there is/was a plugin for it at one point, not sure if it works any more.

http://nendowingsmirai.yuku.com/topic/1958#.UfsKiRaii0Y

Have looked at that program. Even though it shows that it has combined the triangles, for some reason in the file it shows that objects are made of more faces then they were before.

View the obj file in meshlab to see if it has the triangles. If it does then they were made by the sketch-up export. This is my guess as to where that happens. Most programs turn everything into triangles so that they are all planar. My guess is that sketch up also doesn't export UV coordinates and you are relying on the default mapping in bzflag, this is not good. You should texture your models and have real burned in UV coordinates.

If the obj file looks fine in meshlab then the problem is wings. You can use ModelTool to convert from obj to bzw and it does not do any extra tessellation by default. It also will properly map any UV texture coordinates that are part of the obj file.