...
The flags for visibility, penetrability and concavity could be combined in the name of a single object. By default, objects were “visible”, “penetrable” and “convex”. When loading a new scene file, FlyoVeR parsed the names of each object and assigned corresponding properties to the objects composing the virtual scene. Invisible objects could be used to mark special areas within the scene, such as the starting point of each trial, and control the delivery of other stimuli based on the fly’s position inside the VR. Two items, a small sphere and a plane above it, representing the virtual animal size and viewpoint and the initial animal location, are required in every scene and have to be names "_camera_block_pm_" and "_start_", respectively.
Exporting blender scene as collada file
The finished scene can be exported in .dae format. In Blender (Version 2.73) chose File -> Export -> Collada (.dae). A new window opens, where the user can select a file name and directory for the to be exported collada file. If the scene contains materials with mapped image textures, make sure to select "Include UV Textures" and "Include Material Textures" in the "Texture Options" panels on the lower left.
Virtual worlds used in the paper
...