ENTITY b_spline_surface

(* SCHEMA STRUCTURAL_FRAME_SCHEMA; *)

ENTITY b_spline_surface
SUPERTYPE OF ((ONEOF
		(b_spline_surface_with_knots, 
 		uniform_surface, 
 		quasi_uniform_surface, 
 		bezier_surface)) ANDOR 
		rational_b_spline_surface)
SUBTYPE OF (bounded_surface);
	u_degree : INTEGER;
	v_degree : INTEGER;
	control_points_list : LIST [2:?] OF LIST [2:?] OF cartesian_point;
	surface_form : b_spline_surface_form;
	u_closed : LOGICAL;
	v_closed : LOGICAL;
	self_intersect : LOGICAL;
DERIVE
	u_upper : INTEGER := SIZEOF(control_points_list) - 1;
	v_upper : INTEGER := SIZEOF(control_points_list[1]) - 1;
	control_points : ARRAY [0:u_upper] OF ARRAY [0:v_upper] OF cartesian_point :=
		make_array_of_array (control_points_list, 0, u_upper, 0, v_upper);
WHERE
	WRB4 : ('STRUCTURAL_FRAME_SCHEMA.UNIFORM_SURFACE' IN TYPEOF(SELF)) OR
		 ('STRUCTURAL_FRAME_SCHEMA.QUASI_UNIFORM_SURFACE' IN TYPEOF(SELF)) OR
		 ('STRUCTURAL_FRAME_SCHEMA.BEZIER_SURFACE' IN TYPEOF(SELF)) OR
		 ('STRUCTURAL_FRAME_SCHEMA.B_SPLINE_SURFACE_WITH_KNOTS' IN TYPEOF(SELF));
END_ENTITY;  (*  STEP Part 42 (unchanged in 2nd edition)  *)

Explicit Attributes

Entity b_spline_surface has the following local and inherited explicit attributes:
AttributeTypeDefined By
 namelabel (STRING)representation_item
 u_degreeINTEGERb_spline_surface
 v_degreeINTEGERb_spline_surface
 control_points_listLIST OF LIST OF cartesian_point (ENTITY)b_spline_surface
 surface_formb_spline_surface_form (ENUM)b_spline_surface
 u_closedLOGICALb_spline_surface
 v_closedLOGICALb_spline_surface
 self_intersectLOGICALb_spline_surface

Derived Attributes

Entity b_spline_surface has the following local and inherited derived attributes:
AttributeTypeDefined By
 dimdimension_count (INTEGER)geometric_representation_item
 u_upperINTEGERb_spline_surface
 v_upperINTEGERb_spline_surface
 control_pointsARRAY OF ARRAY OF cartesian_point (ENTITY)b_spline_surface

Inverse Attributes

    No Inverse Attributes

Supertypes

Entity b_spline_surface inherits from the following supertypes:
  representation_item
    geometric_representation_item
      surface
        bounded_surface

Subtypes

Entity b_spline_surface has the following subtypes:
    b_spline_surface_with_knots*
    bezier_surface*
    quasi_uniform_surface*
    rational_b_spline_surface*
    uniform_surface*
* - Immediate Subtypes

Referenced By

Entity b_spline_surface and its supertypes are referenced by the following definitions:
DefinitionTypeReferenced Entity
 acyclic_mapped_representation FUNCTION representation_item
 acyclic_surface_replica FUNCTION surface
 assembly_with_bounding_box ENTITY representation_item
 associated_surface FUNCTION surface
 axis1_placement ENTITY geometric_representation_item
 axis2_placement_2d ENTITY geometric_representation_item
 bounded_surface ENTITY b_spline_surface
 brep_2d ENTITY geometric_representation_item
 build_transformed_set FUNCTION surface
 b_spline_surface_with_knots ENTITY b_spline_surface
 cartesian_transformation_operator_2d ENTITY geometric_representation_item
 cartesian_transformation_operator_3d ENTITY geometric_representation_item
 composite_curve_on_surface ENTITY surface
 curve_bounded_surface ENTITY surface
 degenerate_pcurve ENTITY geometric_representation_item
 degenerate_pcurve ENTITY surface
 dimension_of FUNCTION geometric_representation_item
 element_surface_complex ENTITY surface
 face_surface ENTITY surface
 feature_surface_complex ENTITY bounded_surface
 founded_item_select SELECT representation_item
 geometric_representation_item ENTITY surface
 geometric_set_select SELECT surface
 get_basis_surface FUNCTION surface
 half_space_solid ENTITY surface
 item_defined_transformation ENTITY representation_item
 item_in_context FUNCTION representation_item
 joint_system_chemical ENTITY surface
 joint_system_welded_surface ENTITY bounded_surface
 load_element_distributed_surface ENTITY bounded_surface
 load_member_distributed_surface ENTITY bounded_surface
 mapped_item ENTITY representation_item
 offset_surface ENTITY surface
 part_sheet_bounded_complex ENTITY bounded_surface
 pcurve ENTITY surface
 pcurve ENTITY geometric_representation_item
 pcurve_or_surface SELECT surface
 point_on_surface ENTITY surface
 primitive_2d ENTITY geometric_representation_item
 rational_b_spline_surface ENTITY b_spline_surface
 rectangular_trimmed_surface ENTITY surface
 representation ENTITY representation_item
 representation_item ENTITY geometric_representation_item
 representation_map ENTITY representation_item
 revolved_area_solid ENTITY geometric_representation_item
 revolved_area_solid ENTITY representation_item
 revolved_face_solid ENTITY geometric_representation_item
 revolved_face_solid ENTITY representation_item
 select_generic_item SELECT representation_item
 solid_replica ENTITY geometric_representation_item
 surface ENTITY bounded_surface
 surface_curve ENTITY surface
 surface_curve_swept_area_solid ENTITY surface
 surface_curve_swept_face_solid ENTITY surface
 surface_curve_swept_surface ENTITY surface
 surface_patch ENTITY bounded_surface
 surface_replica ENTITY surface
 volume ENTITY geometric_representation_item


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2023-03-25T00:11:38-04:00