Thanks for that Justin,

I don't control the structure of the WRL file, since it's exported from a
3-d design application (which I believe is called Ideas).  The WRL model is
just one long list of coordinates.  Would it be an easier option for me to
try to duplicate the Cosmo bug?

> Justin Couch  wrote
>
> ian mayo wrote:
> > Unfortunately when either version of the ship is loaded I get large
pieces
> > of the ship missing - when viewed from one side the front 1/3 of the
ship
> > isn't visible, viewed from the other the front is visible but not part
of
> > the superstructure.
> >
> > In OpenFX both files seem fine, and the WRL version seems fine in Cosmo
> > Player.
>
> Typically this is a polygon ordering issue. Triangles must be ordered
> either clockwise or counter-clockwise. If you declare them as a
> mish-mash collection of both directions then you will see the effect you
> describe.
>
> The fact it looks fine in Cosmo but not other players will probably be a
> bug in Cosmo. They may have just put on two-sided lighting for all
> geometry regardless of what the VRML nodes said to do. There were a
> bunch of times like this that Cosmo did stuff that was not spec
> compliant, or at least very dodgy reading of the spec.

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