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:
Attribute | Type | Defined By |
---|
name | label (STRING) | representation_item |
u_degree | INTEGER | b_spline_surface |
v_degree | INTEGER | b_spline_surface |
control_points_list | LIST OF LIST OF cartesian_point (ENTITY) | b_spline_surface |
surface_form | b_spline_surface_form (ENUM) | b_spline_surface |
u_closed | LOGICAL | b_spline_surface |
v_closed | LOGICAL | b_spline_surface |
self_intersect | LOGICAL | b_spline_surface |
|
Derived Attributes
Entity b_spline_surface has the following local and inherited derived attributes:
Inverse Attributes
No Inverse AttributesSupertypes
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:
[Top Level Definitions] [Exit]Generated by STEP Tools® EXPRESS to HTML Converter
2023-03-25T00:11:38-04:00