typedef struct {
Xgl_pt_flag_f3dcenter;/∗ center point of circle ∗/
Xgl_pt_f3ddir[3];/∗ dir. vectors and normal vector ∗/
Xgl_booleandir_normalized;/∗ TRUE when dir[] are unit vectors ∗/
Xgl_booleandir_normal;/∗ TRUE if dir[2] is a valid vector ∗/
Xgl_usgn32radius;/∗ radius of circle ∗/
} Xgl_circle_f3d;

SunOS