Dick Rous (dick++at++demeern.sgi.com)
Fri, 23 Oct 1998 14:42:56 +0200
is it possible that the vertex normals of the .flt models you use are
wrong or missing?
I found out that several models in the MG distribution suffer(ed) from
this.
Find out by pulling the suspected models in perfly and select highlight
normals.
Regards,
Dick.
Mario Veraart wrote:
>
> Hello pfAll,
>
> I have a problem with the lighting of the flight models that I use
> in my scene.
>
> The terrain geometry is generated by my own program based on telemetry
> data. On this terrain I have to visualise objects that are models made
> with Multigen. The flight version is 15.4.
>
> The effect that I see is that the Flight objects are drawn brighter or
> darker depending on the viewpoint, just a minute change in heading can
> cause a sudden lightening or darkening of the flight objects.
> When I disable the drawing of the terrain with a draw traversal mask
> then the effect does not happen.
>
> The terrain is a textured mesh of triangles with color and normal
> attributes in the pfGeoSet. All terrain tiles use the same pfGeoState
> that is fully defined. The flight objects are non-textured and
> modelled with Gouraud shading.
> When I look at the flight models with perfly they all look fine.
>
> In a previous application I had the opposite and that was solved by
> defining a full defined pfGeoState.
>
> Does anybody know what I could have forgotten to do in my self defined
> geometry or with the multigen models?
>
> Thanks in advance for any hints.
>
> Mario Veraart
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-- ____________________________________________________________Dick Rous Senior Systems Engineer Graphics Technology European Technical Support phone: +31-30-6696868 fax: +31-35-6423162 v-mail: 955-6868
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This archive was generated by hypermail 2.0b2 on Fri Oct 23 1998 - 05:43:16 PDT