Re: [JAVA3D] the object disappear if i set a material.

[Joachim Diepstraten]

Hi Bob

> In case you're interested, normals are used for calculating lighting. A
> shape without normals means that no lighting can be applied, so it appears
> completely black.
Well that's only right when the material of the Shape has no
emitting. Another problem is that it might fall through the backface
removal without a normal.

EOF,
 J.D.

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