Difference between revisions of "HowToExportFromBlender"

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== guide ==
 
== guide ==
  
−
* first you need to install the blender ogre exported :  
+
* install OgreBlenderExport_v1.4.0_prefixpatch :  
−
** download [http://downloads.sourceforge.net/ogre/OgreBlenderExport_v1.4.0.zip?download Blender Exporter v1.4.0]
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** download http://ghoulsblade.schattenkind.net/ogre/OgreBlenderExport_v1.4.0_prefixpatch.zip
−
** unpack and move the everything inside it into (win:)YOUR_BLENDER_DIR/.blender/scripts or (linux:) YOURHOME/.blender/scripts.
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** (this is a modified version i made to automatically prefix all material names and filenames with something to avoid conflicts with other models)
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** start blender
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** unpack and move the everything inside (also subfolders) it into  
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** rightclick into a free place of the bottom-panel and select split area
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*** (win:) YOUR_BLENDER_DIR/.blender/scripts  
−
** on the left button of the new panel select "script-window"
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*** (linux:) YOURHOME/.blender/scripts
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** next to it a "scripts" button appears, you can find the exporter under "Export":"OGRE Meshes"
+
−
** this just exports to meshes from Blender to Ogre XML
+
−
** you need OgreXMLConverter contained in the [http://downloads.sourceforge.net/ogre/OgreCommandLineTools_v1.4.0.msi?download OgreCommandLineTools_v1.4.0.msi] to turn the XML (item.mesh.xml) into a runtime binary mesh (item.mesh).
+
−
** you also need to get a full python installation ( http://python.org )
+
  
−
* open the .blend file you want to export (or close blender and start it by double clicking the .blend file)
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* install python
−
* select the object you want to export using rightclick (you can only export single objects, but you can make multiple subobjects somehow)
+
** for win : http://python.org/download/ : Python 2.5.1 Windows installer
−
* on the lowest panel, select "buttons window" on the menu on the left.
+
** for linux : "apt-get install python" or something like that
−
* on the "Panels" menu next to it select "Object"
+
−
* set a unique object name in the panel on the lower left (avoid spaces and special letters, something like ke_biotube01 is good)
+
  
−
* export :  
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* install OgreXMLConverter :
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**select everything you want to export
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** for win : [http://downloads.sourceforge.net/ogre/OgreCommandLineTools_v1.4.0.msi?download OgreCommandLineTools_v1.4.0.msi]
−
**open python-script-list (right bottom) : export > ogre.mesh
+
** for linux : OgreXMLConverter is included in the ogre package or the ogre source
−
**"copy texture" should be active
+
−
**ogremeshexporter should be active so we get a .mesh instead of a .xml
+
−
**hit export
+
  
  
−
*see [[HowToTestModelsIngame]]
+
* open the .blend file you want to export (e.g. double click the .blend file)
 +
* select the object you want to export using rightclick
 +
** (you can only export single objects, but you can make multiple subobjects somehow)
  
 +
* open the "script-window"
 +
** rightclick the seperator between the 3d-view and the bottom panel and select split area
 +
** on the left button of the new panel select "script-window"
 +
** next to it a "scripts" button appears, select "Scripts":"Export":"OGRE Meshes" there
 +
** enter a unique prefix for you model and materials in the line saying "Prefix all names with this :"
 +
*** (avoid spaces and special letters, something like ke_gpl_biotube_ is good)
 +
** the broad "copy texture" button should be active/pressed
 +
** select a directory where to export
 +
*** creates multiple files, .material and .mesh file, and texture images are also copied
 +
*** i suggest using a new empty directory
 +
** the "OgreXMLConverter" button should be active/pressed so we get a .mesh instead of a .xml
 +
** hit export
 +
** if you only got a .mesh.xml file, but no .mesh file, then the exporter couldn't locate the path to the OgreXMLConverter
 +
*** to fix this, click "Preferences"
 +
*** in "OgreXMLConverter Location" : click "Manual"
 +
*** on win : select the path to the OgreXMLConverter.exe , e.g. C:\OgreCommandLineTools\OgreXmlConverter.exe
 +
*** if you can't find it you need to install OgreCommandLineTools_v1.4.0.msi , see above
  
−
== old notes ==
+
* the model will probably have to be rescaled, recentered and rotated
−
resizing, rotating and recentering has to be done in blender until we find the time to implement an editor for something like this in sfz.
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** we created a specialized editor for that, see [[HowToAdjustMeshesForSFZ]]
  
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*press n : transform window,
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* see [[HowToTestModelsIngame]]
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**set pos to 0
+
−
**lower right of the transform window should be near 1,1,1 for one ingame tile (press s to scale the model)
+
−
*move the middlepoint to a position on the grid
+
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* go to edit mode and move the mesh so that it is aligned to a unit-sized grid
+
  
  
−
* this forum thread in iris2 about exporting ogre models might also be interesting : http://www.iris2.de/forums/viewtopic.php?t=1061
+
== restrictions ==
 +
 
 +
* one object ingame is one object in blender, so you have to combine multiple parts to a single object to export it
 +
** this can be done with    ctrl + j :  combine objects
 +
* texture images should have a size that is a power of two, e.g. 32,64,128,256,512,1024,...
 +
* don't make textures too large to save video ram ingame, 256x256 should be enough for most things, but please keep a backup of the original high-res texture
 +
* most blender texture effects and shaders will not work ingame, a plain texture is the easiest to get to work
 +
 
 +
== tips ==
 +
 
 +
* on the lowest panel, select "buttons window" on the menu on the left.
 +
* if you want to edit object and mesh names : on the "Panels" menu select "Editing" : "Link and Materials" panel
 +
* if you want to edit material names : on the "Panels" menu select "Shading":"Material"
 +
* if you want to edit texture names and image paths : on the "Panels" menu select "Shading":"Texture"
 +
* transform window : press n
 +
**lower right of the transform window should be near 1,1,1 for one ingame tile (press s to scale the model)
 +
* this forum thread in iris2 about exporting ogre models might be interesting : http://www.iris2.de/forums/viewtopic.php?t=1061

Latest revision as of 19:10, 4 September 2007

just a few notes on exporting, we should make a proper tutorial someday

guide

  • install OgreBlenderExport_v1.4.0_prefixpatch :
  • install python
    • for win : http://python.org/download/ : Python 2.5.1 Windows installer
    • for linux : "apt-get install python" or something like that


  • open the .blend file you want to export (e.g. double click the .blend file)
  • select the object you want to export using rightclick
    • (you can only export single objects, but you can make multiple subobjects somehow)
  • open the "script-window"
    • rightclick the seperator between the 3d-view and the bottom panel and select split area
    • on the left button of the new panel select "script-window"
    • next to it a "scripts" button appears, select "Scripts":"Export":"OGRE Meshes" there
    • enter a unique prefix for you model and materials in the line saying "Prefix all names with this :"
      • (avoid spaces and special letters, something like ke_gpl_biotube_ is good)
    • the broad "copy texture" button should be active/pressed
    • select a directory where to export
      • creates multiple files, .material and .mesh file, and texture images are also copied
      • i suggest using a new empty directory
    • the "OgreXMLConverter" button should be active/pressed so we get a .mesh instead of a .xml
    • hit export
    • if you only got a .mesh.xml file, but no .mesh file, then the exporter couldn't locate the path to the OgreXMLConverter
      • to fix this, click "Preferences"
      • in "OgreXMLConverter Location" : click "Manual"
      • on win : select the path to the OgreXMLConverter.exe , e.g. C:\OgreCommandLineTools\OgreXmlConverter.exe
      • if you can't find it you need to install OgreCommandLineTools_v1.4.0.msi , see above
  • the model will probably have to be rescaled, recentered and rotated


restrictions

  • one object ingame is one object in blender, so you have to combine multiple parts to a single object to export it
    • this can be done with ctrl + j : combine objects
  • texture images should have a size that is a power of two, e.g. 32,64,128,256,512,1024,...
  • don't make textures too large to save video ram ingame, 256x256 should be enough for most things, but please keep a backup of the original high-res texture
  • most blender texture effects and shaders will not work ingame, a plain texture is the easiest to get to work

tips

  • on the lowest panel, select "buttons window" on the menu on the left.
  • if you want to edit object and mesh names : on the "Panels" menu select "Editing" : "Link and Materials" panel
  • if you want to edit material names : on the "Panels" menu select "Shading":"Material"
  • if you want to edit texture names and image paths : on the "Panels" menu select "Shading":"Texture"
  • transform window : press n
    • lower right of the transform window should be near 1,1,1 for one ingame tile (press s to scale the model)
  • this forum thread in iris2 about exporting ogre models might be interesting : http://www.iris2.de/forums/viewtopic.php?t=1061
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