gluQuadricOrientation — specify inside/outside orientation for quadrics
Specifies the quadrics object (created with gluNewQuadric).
Specifies the desired orientation. Valid values are
gluQuadricOrientation specifies what kind of orientation is desired for quadrics rendered
orientation values are as follows:
Quadrics are drawn with normals pointing outward (the initial value).
Quadrics are drawn with normals pointing inward.
Note that the interpretation of outward and inward depends on the quadric being drawn.
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