B_spline_surface

Overview Schemas Index

geometry_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
WR1: ('GEOMETRY_SCHEMA.UNIFORM_SURFACE' IN  TYPEOF(SELF)) OR
        ('GEOMETRY_SCHEMA.QUASI_UNIFORM_SURFACE' IN  TYPEOF(SELF)) OR
        ('GEOMETRY_SCHEMA.BEZIER_SURFACE' IN  TYPEOF(SELF)) OR
        ('GEOMETRY_SCHEMA.B_SPLINE_SURFACE_WITH_KNOTS' IN TYPEOF(SELF));
END_ENTITY; -- b_spline_surface

Entity data types and their attributes

representation_item
name: label;
geometric_representation_item
(DER) dim: dimension_count;
surface
-
bounded_surface
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b_spline_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;
(DER) u_upper: INTEGER;
(DER) v_upper: INTEGER;
(DER) control_points: ARRAY [0:u_upper] OF ARRAY [0:v_upper] OF cartesian_point;

Known subtypes

b_spline_surface_with_knots (geometry_schema)

bezier_surface (geometry_schema)

quasi_uniform_surface (geometry_schema)

rational_b_spline_surface (geometry_schema)

uniform_surface (geometry_schema)

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b_spline_surface
b_spline_surface_knot_locator.basis_surface
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b_spline_surface_strip.basis_surface
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inspected_shape_element_select
b_spline_or_rectangular_composite_surface_select

Users: by defined types, not used by any entity attribute

b_spline_surface
-

Global rules for this entity data type

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