ENTITY b_spline_curve

(* SCHEMA explicit_draughting; *)

  ENTITY b_spline_curve
    SUPERTYPE OF (ONEOF (uniform_curve,b_spline_curve_with_knots,
        quasi_uniform_curve,bezier_curve) ANDOR rational_b_spline_curve)
    SUBTYPE OF (bounded_curve);
      degree              : INTEGER;
      control_points_list : LIST [2:?] OF cartesian_point;
      curve_form          : b_spline_curve_form;
      closed_curve        : LOGICAL;
      self_intersect      : LOGICAL;
    DERIVE
      upper_index_on_control_points : INTEGER := SIZEOF(
                                         control_points_list) - 1;
      control_points                : ARRAY [0:
                                         upper_index_on_control_points] OF
                                          cartesian_point := list_to_array(
                                         control_points_list,0,
                                         upper_index_on_control_points);
    WHERE
      wr1: ('EXPLICIT_DRAUGHTING.UNIFORM_CURVE' IN TYPEOF(SELF)) OR (
               'EXPLICIT_DRAUGHTING.QUASI_UNIFORM_CURVE' IN TYPEOF(SELF)) 
               OR ('EXPLICIT_DRAUGHTING.BEZIER_CURVE' IN TYPEOF(SELF)) OR (
               'EXPLICIT_DRAUGHTING.B_SPLINE_CURVE_WITH_KNOTS' IN TYPEOF(
               SELF));
  END_ENTITY; -- b_spline_curve

Explicit Attributes

Entity b_spline_curve has the following local and inherited explicit attributes:

Attribute	Type	Defined By
name	label (STRING)	representation_item
degree	INTEGER	b_spline_curve
control_points_list	LIST OF cartesian_point (ENTITY)	b_spline_curve
curve_form	b_spline_curve_form (ENUM)	b_spline_curve
closed_curve	LOGICAL	b_spline_curve
self_intersect	LOGICAL	b_spline_curve

Derived Attributes

Entity b_spline_curve has the following local and inherited derived attributes:

Attribute	Type	Defined By
dim	dimension_count (INTEGER)	geometric_representation_item
upper_index_on_control_points	INTEGER	b_spline_curve
control_points	ARRAY OF cartesian_point (ENTITY)	b_spline_curve

Inverse Attributes

No Inverse Attributes

Supertypes

Entity b_spline_curve inherits from the following supertypes:
  representation_item
    geometric_representation_item
      curve
        bounded_curve

Subtypes

Entity b_spline_curve has the following subtypes:
    b_spline_curve_with_knots*
    bezier_curve*
    quasi_uniform_curve*
    rational_b_spline_curve*
    uniform_curve*
* - Immediate Subtypes

Referenced By

Entity b_spline_curve and its supertypes are referenced by the following definitions:

Definition	Type	Referenced Entity
acyclic_mapped_item_usage	FUNCTION	representation_item
acyclic_mapped_representation	FUNCTION	representation_item
annotation_fill_area	ENTITY	curve
axis2_placement_2d	ENTITY	geometric_representation_item
bounded_curve	ENTITY	b_spline_curve
camera_model_d2	ENTITY	geometric_representation_item
composite_curve_segment	ENTITY	curve
composite_text_with_associated_curves	ENTITY	curve
curve_or_annotation_curve_occurrence	SELECT	curve
dimension_of	FUNCTION	geometric_representation_item
geometric_representation_item	ENTITY	curve
geometric_set_select	SELECT	curve
item_in_context	FUNCTION	representation_item
layered_item	SELECT	representation_item
mapped_item	ENTITY	representation_item
offset_curve_2d	ENTITY	curve
point_on_curve	ENTITY	curve
rational_b_spline_curve	ENTITY	b_spline_curve
representation	ENTITY	representation_item
representation_map	ENTITY	representation_item
structured_dimension_callout	ENTITY	representation_item
styled_item	ENTITY	representation_item
style_context_select	SELECT	representation_item
text_literal_with_associated_curves	ENTITY	curve
trimmed_curve	ENTITY	curve
using_representations	FUNCTION	representation_item

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