The SketchUp OBJ exporter extends the export capability of SketchUp by providing an additional export type in the File > Export > 3d Model dialog. OBJ is a legacy ASCII format developed by Wavefront/Alias Software.
II. What’s New?
• Support for positioned textures. The positioning of textures is now preserved upon export.
• Support for transparent materials. The transparency of materials is now exported to the OBJ file.
• Support for double-sided faces. A new option, “Export faces double-sided”, has been added to the UI. This option, which allows the export of a back-side material, exports an additional face with flipped normals and reversed vertices.
• Support for object hierarchy. The OBJ output now supports a flat set membership hierarchy, meaning that the format understands which objects belong to any set. It is important to note that it does not support a tree hierarchy meaning it doesn’t know if one particular set is actually a component part of another set. This limitation is a limitation of the OBJ format itself.
• Support for raster image objects. Raster images are now exported.
• Support for object visibility. Only visible objects are output to the OBJ file.
• Exported material names are now based on the name of the material in SketchUp vs. being based on the name of the underlying texture file.
• A version number has been added to the OBJ Options dialog so that you can verify you are on the latest release.
• In addition to the above, many bug fixes have been made.

Download pdf SketchUp Wavefront OBJ Exporter – Version 4.0.4