Andy Ross <[EMAIL PROTECTED]> said:

> Ilja wrote:
>  > 1.  The trim wheel looks in AC3D like this [...] is just an ugly
>  >     object: [...] The orange mixture stick doesn't look correct too.
> 
> Off hand, it looks to me like the normals are wrong.  The bright white
> vertices usually result from a normal being far too large.  AC3D has
> been known to generate some very strange geometry in the past, and
> it's possible that it is confusing plib's normal calculation.  Try to
> look through the file and verify that you don't have any degenerate
> triangles, etc...

Plib snaps vertices together.  Yet another "why do we need this?" feature that
is always on by default.  I think the snap value has been reduced from 1cm to
1mm in plib cvs.  Also there is a fix in plib cvs that partially fixes a
problem where perfectly good triangles were being found degenerate.  When plib
finds degenerate triangle it just puts a 1,0,0 normal on the vertices (hence
the white).   It is still possible for plib to detect a good triangle as
degenerate.

>  > 2. The instrument panel shines through the fuselage: [...] but the dc3
>  >    model is not alone there, when you look at other aircrafts with 2d
>  >    panels, you can find the same bug (or feature?). So I took
>  >    screenshots from c172, a4 and c310u3a.
> 
> This is a known issue that gets reported from time to time.  The 2D
> panels use a depth buffer offset to draw the layers, and it ends up
> being too coarse on 16 bit depth buffers.  Try setting your screen
> depth to 24bpp and see if that fixes the issue.
> 
>  > It seems to depend on models' surfaces, but what can you see in
>  > FlightGear v. 9.2?  [...]  There is no bug!
> 
> Are you sure you didn't change your display settings and/or take the
> screenshots on a different machines?

It isn't showing in 24bpp mode.  Some aircraft do a range select on the panel
object so that it doesn't show at all when in external views (e.g. c172p-3d).
Maybe that is where the confusion is.


Best,

Jim


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