gluQuadricNormals — specify what kind of normals are desired for quadrics
Specifies the quadrics object (created with gluNewQuadric).
Specifies the desired type of normals. Valid values are
gluQuadricNormals specifies what kind of normals are desired for quadrics rendered with
quad. The legal values are as follows:
No normals are generated.
One normal is generated for every facet of a quadric.
One normal is generated for every vertex of a quadric. This is the initial value.
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