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pcurve

EXPRESS specification:

ENTITY pcurve
SUBTYPE OF ( curve);
basis_surface  :  surface;
reference_to_curve  :  definitional_representation;
WHERE
WRP7  :  SIZEOF(reference_to_curve\representation.items) = 1;
WRP8  :  'STRUCTURAL_FRAME_SCHEMA.CURVE' IN TYPEOF (reference_to_curve\representation.items[1]);
WRP9  :  reference_to_curve\representation. items[1]\geometric_representation_item.dim = 2;
END_ENTITY;

References (4):

Name Type Referred through Express-G
bounded_pcurve Entity
Supertype
No Diagram
curve Entity
Subtype
No Diagram
curve_on_surface Select
Select relation
No Diagram
pcurve_or_surface Select
Select relation
No Diagram

Inheritance graph

ENTITY pcurve;
ENTITY representation_item;
name  :  label;
ENTITY geometric_representation_item;
DERIVE
dim  :  dimension_count :=  dimension_of(SELF);
ENTITY curve;
ENTITY pcurve;
basis_surface  :  surface;
reference_to_curve  :  definitional_representation;
END_ENTITY;