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]
+
** 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.
+
** (this is a modified version i made to automatically prefix all material names and filenames with something to avoid conflicts with other models)
−
** start blender
+
** unpack and move the everything inside (also subfolders) it into  
−
** rightclick the seperator between the 3d-view and 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
−
** 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).
+
−
*** set the path to the OgreCommandLineTools folder in the blender mesh exported window under preferences : click manual
+
−
** 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)
+
* 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_gpl_biotube01 is good)
+
−
* on the "Panels" menu select "Editing"
+
−
* in the "Link and Materials" panel, change the name to somethimg meaningful, like ke_gpl_biotube01
+
  
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* on the "Panels" menu select "Shading":"Material"
+
* install OgreXMLConverter :
−
* on the second subtab, "Links and Pipeline", edit the name of every material to start with something unique for this model, like "ke_biotube_mat0", to avoid conflicts with materials of other models
+
** for win : [http://downloads.sourceforge.net/ogre/OgreCommandLineTools_v1.4.0.msi?download OgreCommandLineTools_v1.4.0.msi]
 +
** for linux : OgreXMLConverter is included in the ogre package or the ogre source
  
−
* if you have renamed some texture files :
 
−
** on the "Panels" menu select "Shading":"Texture"
 
−
** correct the imagepath of every texture using images
 
  
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* export :
+
* open the .blend file you want to export (e.g. double click the .blend file)
−
** in the script view panel, select "Scripts":"Export":"OGRE Meshes"
+
* select the object you want to export using rightclick
−
** change "Material File: Scene.material" to a better filename, like ke_gpl_biotube01.material
+
** (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
 
** the broad "copy texture" button should be active/pressed
−
** select a directory where to export (.material and .mesh file, and materials are also copied, i suggest an empty directory)
+
** 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
 
** the "OgreXMLConverter" button should be active/pressed so we get a .mesh instead of a .xml
 
** hit export
 
** 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, see OgreCommandLineTools_v1.4.0.msi above.
+
** 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
 +
** we created a specialized editor for that, see [[HowToAdjustMeshesForSFZ]]
  
−
*see [[HowToTestModelsIngame]]
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* see [[HowToTestModelsIngame]]
  
−
== old notes ==
 
−
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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*press n : transform window,
+
== restrictions ==
−
**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
+
−
* go to edit mode and move the mesh so that it is aligned to a unit-sized grid
+
  
 +
* 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
  
−
* this forum thread in iris2 about exporting ogre models might also be interesting : http://www.iris2.de/forums/viewtopic.php?t=1061
+
== 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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