Stephen <mca### [at] aolcom> wrote:
> On 8/16/2017 9:33 AM, Sven Littkowski wrote:

> > What is the meaning of "making normals consistent", and of "make normals
> > face inwards"? I need to understand this. And ... sorry for all my

> https://docs.blender.org/manual/ja/dev/modeling/meshes/editing/normals.html

Blender probably has some very nice code to make sure that all of your triangles
in your mesh have all the sides "pointing the right way" - rather than having
some of them (using a coin analogy) tail side up rather than head side up.

See what that might look like below:

http://news.povray.org/povray.binaries.images/thread/%3Cweb.57b4f3192c2caea5e7df57c0@news.povray.org%3E/?ttop=413577&to
ff=50

you can probably test for this in your scene by defining both a texture{} AND a
contrasting interior_texture{}.

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