gluQuadricOrientation - specify inside/outside orientation for quadrics
void gluQuadricOrientation( GLUquadricObj *qobj, GLenum orientation )
qobj Specifies the quadrics object (created with gluNewQuadric). orientation Specifies the desired orientation. Valid values are GLU_OUTSIDE and GLU_INSIDE.
gluQuadricOrientation specifies what kind of orientation is desired for quadrics rendered with qobj. The orientation values are as follows: GLU_OUTSIDE Quadrics are drawn with normals pointing outward. GLU_INSIDE Normals point inward. The default is GLU_OUTSIDE. Note that the interpretation of outward and inward depends on the quadric being drawn.
gluNewQuadric, gluQuadricDrawStyle, gluQuadricNormals, gluQuadricTexture
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Last Edited: Mon, May 22, 1995