Re: problem with normals

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Rémi Arnaud (remi++at++remi.asd.sgi.com)
Thu, 27 Feb 1997 09:53:11 -0800 (PST)

Yann Andenmatten wrote:
>
> Hi,
>
> I've create an object (a cylinder) without texture, but with colors. The
> problem is that the object is colored with the colors, but it ignores the
> light...
> What am I missing ?
>
> The code is like this :
>
>
> pfGeoSet* cylGeoSet = new(arena) pfGeoSet;
>
> cylGeoSet->setAttr(PFGS_COORD3, PFGS_PER_VERTEX, cylPts, indexPts);
> cylGeoSet->setAttr(PFGS_NORMAL3, PFGS_PER_PRIM, cylNormals, indexNormals);
> cylGeoSet->setAttr(PFGS_COLOR4, PFGS_PER_VERTEX, cylColors, indexColors);
> cylGeoSet->setAttr(PFGS_TEXCOORD2, PFGS_OFF, cylPts, indexPts);
>
> // the total number of triangles
> cylGeoSet->setNumPrims(2*(nbPtsHeight-1)*2*nbPtsCircle);
> cylGeoSet->setPrimType(PFGS_TRIS);
>
> // set the pfGeoState and the pfGeoSet
> gstate = new(arena) pfGeoState;
> gstate->setMode(PFSTATE_CULLFACE, PFCF_OFF);
> gstate->setMode(PFSTATE_ENLIGHTING, PFTR_OFF);
                                          ^^^^
      You said no lighting, hum !

> gstate->setMode(PFSTATE_TRANSPARENCY, PFTR_OFF);
> gstate->setMode(PFSTATE_ENTEXTURE, PFTR_OFF);
> gstate->setMode(PFSTATE_ENHIGHLIGHTING,PFTR_OFF);
> gstate->setMode(PFSTATE_ENWIREFRAME, PFTR_OFF);
>
> cylGeoSet->setGState(gstate);
>
> Thanks for help !
>
> Yann
>
> PS : I've an other object in the scene (that is create form a file and is
> textured) and it uses the light.
>
> --
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> [] [] [] [] > Yann Andenmatten, +41.22 693.58.50
> [][][] [] [] [][][] > yandenmat++at++di.epfl.ch
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