clipka <ano### [at] anonymousorg> wrote:
> Am 20.10.2012 20:11, schrieb MichaelJF:
>
> > So far I detected that Wings
> > produces some inverted normals (normals into the object, which would produce
> > wrong results with the meshcam) but not very much.
>
> Are you sure about this? Wings uses a data model that /exclusively/
> supports solid objects, where it is always well-defined where "inside" is.

First, yes the SSLT-feature is a great achievement as Jaime showed us with his
piano very impressively. But the possibility to read not only quoted text would
be even a great one. In a completely other way of course.

Second, no, I'm not sure about it. In one case I am. Wings had produced a wrong
normal with my stone of orloff (the middle point at the base) and showed a very
strange behaviour while rotating the object. Since this object has only a few
vertices, I noticed it. As I inspected my incense alarm clock (some 40.000
vertices) more closely (with MeshLab showing the normals) I found that there
seems to be some inverted normals but some of the normals pointing inside the
object are most likely correct due to close folds. But not all. I wrote a macro
with a third party software with allowed me to write a POV macro to show the
normals at the vertices using Point_At_Trans to indicate the direction. Within
some 40.000 vertices only very few appeared red (which means the normals are
inverted) the most are green (normals are correct). But the idea of having wrong
normals in some regions was not completely wrong. But they stemmed from other
faces since the uv-mapping was not correct. Wings had placed uv-areas over
another so that different faces used the same uv-regions. POV decided for one of
them and at the second it choose the first. So my incense alarm clock has a
sonny side and the other side shows the flaws. So at last I did the mistake,
having not understood the way Wings does the uv-mapping (I tried nearly all
options, but yielded no better results). I habe noticed a very strange behaviour
with only one wings object so far but cannot reproduce it unfortunatelly. This
behaviour could only be explained with wrong normals. If I experience this
phenomenon again I will soon save and post it. Meanwhile I think It must have
been an coincidence most likely due to my small skils with Wings.

Best regards,
Michael

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