Concerning the SunFlow and YafaRay rendering engines, their parameters can be modified in a SweetHome3D.l4j.ini file by adding the prefix "-Dcom.eteks.sweethome3d.j3d.PhotoRenderer." or "-Dcom.eteks.sweethome3d.j3d.YafarayRenderer." .
...and you'll find the properties that may follow these prefixes in the PhotoRenderer.properties and YafarayRenderer.properties files.Thanks for your feedback
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Emmanuel Puybaret, Sweet Home 3D creator
