SketchUp to Ogre Exporter

About

This is a Ruby based script for SketchUp which can export 3D scenes to the Ogre 3D rendering engine. It is released under the LGPL.

Written by Fabrizio Nunnari (based on 1.0.1 Written by Kojack).

See the latest README for further details. There is also a Discusison Thread on the Ogre3D forum.

Development is sponsorized by ASA-Lab at the Virtual Reality & Multimedia Park

Downloads

• 100331 sketchup_ogre_export-v1_2_0beta9.zip: After a looong time. Ported/tested on MacOSX. Tested on SketchUp 7.1. Exported colors are have now just a diffuse component, to better simulate the SketchUp look.

  I also compiled an OgreXmlConverter for Mac, based on Ogre 1.6.5, to convert the Ogre .mesh.xml into Binary meshes.

• 090319 sketchup_ogre_export-v1_2_0beta8.zip: Minor change: adds prefix also to default material.
• 080331 sketchup_ogre_export-v1_2_0beta7.zip: Fixed some color export (normalized normals).
• 080331 sketchup_ogre_export-v1_2_0beta6.zip: Now can export also backfaces.
• 080328 sketchup_ogre_export-v1_2_0beta5.zip: Really fixed UV mapping export :-)
• 080326 sketchup_ogre_export-v1_2_0beta4.zip: Fixed UV mapping export.
• 080325 sketchup_ogre_export-v1_2_0beta3.zip

Succesfull examples

• Since 1.2.0b7 color is exported correctly for some models (normalized normals). For example, in the "Mother of God" model there is a nice Fiat 500 that was exporting with too much luminance in v1.2.0b6 (The model is not on the 3D warehouse anymore, but was uploaded by Gigi Whitesharkita).

  

• Since 1.2.0b6 exports also backfaces, as for the St. Peter Basilisk in Vatican

  

• An nice Wright 1903 flyer

  

• This motocycle is in the internal library of Sketchup

  

• Albero1.skp: Here the alpha is exported well, while in many cases PNGs and TIFFs lose transparency.

  

Test Cases for Known Bugs

Here there are some test cases for the volunteers intersted in improving the exporter:

• cassa.skp: The origin is not preserved. Moving the Axes of SketchUp does not change the internal transform of entities. I must retrieve the current axes transform and apply the inverse to the exported entities.

  

• EiffelTower.skp: The png texture is transparent but the transparency is not recognized by the Material.has_alpha? method. Is someone able to tell me the difference between this png and the one used in the tree shown above?

  

• Windows.skp: Many TIFF textures fail to save. Here I get FILE_WRITE_FAILED_UNKNOWN from the TextureWriter for both the windows internals.

  

• Solved in 1.2.0beta4! cassa.skp: The UV mapping on the top of this box is wrong

  

• Works since 1.2.0beta5! WindowDoor.skp: Tricky export here: i) There are 2 nested groups, ii) The bounding box looks weird, iii) the uvmaps failed in 1.2.0beta4 because the material has been defined in the group, not on the faces, iv) There is an unused material with a texture that don't need to be exported.