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Old 01-23-2006, 10:26 AM
Johannes Johannes is offline
Join Date: Jan 2005
Posts: 143
Problem with rendering tube-wrl-file

I created a tube with blender but it does not show up correct in vizard. Only shows the tube from the outside, when you are inside the tube, it does not show it.

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Old 01-23-2006, 08:56 PM
tobin tobin is offline
WorldViz Team Member
Join Date: Feb 2003
Posts: 251
This is a common pitfall, one that almost everyone experiences at sometime. The default mode for most 3D graphics rendering pipes is to cull (i.e., not draw) surfaces that are facing away from the viewpoint. Often this dumb strategy works and pays off well in performance. But when you want to view the inside AND outside of an object, the method is problematic. You can either export your object using a double-sided material (I don't know for sure that blender supports this) or within Vizard disable backface culling with the <node3d>.disable command.

Here's a more detailed explanation of backface culling:
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