typedef struct {
Xgl_usgn32order;/∗ Order of curve ∗/
Xgl_usgn32num_knots;/∗ Number of knots ∗/
float∗knot_vector;/∗ Knot vector ∗/
Xgl_bounds_f1drange;/∗ Range of parameter ∗/
Xgl_pt_listctrl_pts;/∗ List of control points ∗/
/∗
  ∗ Trim curve structure fields (applicable only to trim curves)
  ∗/
Xgl_booleantrim_curve_vis;/∗ Highlight trim curve ∗/
Xgl_trim_curve_approxtrim_curve_approx;/∗ Approx type ∗/
floattrim_curve_approx_value;/∗ Approx value ∗/
} Xgl_trim_curve;

SunOS