Re: [Flightgear-devel] Double sided in Blender

[Innis C. <in...@ho...>]

Thanks Gary
I don't think that is it I have checked the normals and flip them to no avail.
Correct me if I am wrong but if the object is double sided then you should not be able to see through it from one side.As I said before when the faces concerned are separate objects they show double sided in FG it is only when
they are joined together that they become one sided.

Cheers
Innis
 
> Innis,
> 
> It sounds like some polygon normals are inverted. This is pretty
> common after joins. After doing a join on objects in Blender, select
> your object, go to Edit mode, and on the button bar find the Mesh
> Tools More menu. From there, select Draw Normals. The normal is a line
> perpendicular to the surface and extending outward from the center of
> the polygon in the polygon's facing direction. Generally you want all
> normals pointing out, indicating the facing sides are on the outside
> of the object. I suspect you'll find some normals are not pointed the
> right way.
> 
> To fix this, you can select the problem polygons and then: Mesh
> Tools-->Normals-->Flip (also available from the specials key: w), or
> you can also try to recalculate all the normals to face outside,
> (ctrl-n in Windows). Usually ctrl-n does a pretty good job of
> resetting normals of simple objects in the right direction.
> 
> Feel free to contact me off-list if I can be of more help.
> 
> -Gary, aka Buckaroo on MP
> 
> 
> On Thu, Jun 11, 2009 at 11:23 PM, Innis Cunningham<in...@ho...> wrote:
> > Hello All
> > I am trying to build a hangar with Blender  2.48 not a hard task you might
> > say
> > but for some reason when I join two objects to one some of the sides become
> > single sided that is they become transparent from one side in FG.If I leave
> > them
> > as separate objects they show double sided in FG.Does anyone know what I am
> > doing wrong?.
> >
> > Cheers
> > Innis
> >
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