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-- File: TDataXtd_Constraint.cdl
-- Created: Mon Apr 6 17:38:41 2009
-- Author: Sergey ZARITCHNY
-- <sergey.zaritchny@opencascade.com>
---Copyright: Open CasCade SA 2009
class Constraint from TDataXtd inherits Attribute from TDF
---Purpose: The groundwork to define constraint attributes.
-- The constraint attribute contains the following sorts of data:
-- - Type whether the constraint attribute is a
-- geometric constraint or a dimension
-- - Value the real number value of a numeric
-- constraint such as an angle or a radius
-- - Geometries to identify the geometries
-- underlying the topological attributes which
-- define the constraint (up to 4)
-- - Plane for 2D constraints.
uses ConstraintEnum from TDataXtd,
Attribute from TDF,
Label from TDF,
LabelList from TDF,
LabelMap from TDF,
GUID from Standard,
Integer from Standard,
DataSet from TDF,
RelocationTable from TDF,
NamedShape from TNaming,
Constraint from TDataXtd,
Real from TDataStd
is
GetID (myclass)
---C++: return const &
---Purpose: Returns the GUID for constraints.
returns GUID from Standard;
Set (myclass; label : Label from TDF)
---Purpose: Finds or creates the 2D constraint attribute
-- defined by the planar topological attribute plane
-- and the label label.
returns Constraint from TDataXtd;
---Purpose: Constraint methods
-- ==================
Create
returns mutable Constraint from TDataXtd;
Set (me : mutable; type : ConstraintEnum from TDataXtd;
G1 : NamedShape from TNaming);
---Purpose:
-- Finds or creates the constraint attribute defined
-- by the topological attribute G1 and the constraint type type.
Set (me : mutable; type : ConstraintEnum;
G1 : NamedShape from TNaming;
G2 : NamedShape from TNaming);
---Purpose:
-- Finds or creates the constraint attribute defined
-- by the topological attributes G1 and G2, and by
-- the constraint type type.
Set (me : mutable; type : ConstraintEnum;
G1 : NamedShape from TNaming;
G2 : NamedShape from TNaming;
G3 : NamedShape from TNaming);
---Purpose:
-- Finds or creates the constraint attribute defined
-- by the topological attributes G1, G2 and G3, and
-- by the constraint type type.
Set (me : mutable; type : ConstraintEnum;
G1 : NamedShape from TNaming;
G2 : NamedShape from TNaming;
G3 : NamedShape from TNaming;
G4 : NamedShape from TNaming); ---Purpose:
-- Finds or creates the constraint attribute defined
-- by the topological attributes G1, G2, G3 and G4,
-- and by the constraint type type.
---Purpose: methods to read constraint fields
-- =================================
Verified(me)
returns Boolean from Standard;
---Purpose:
-- Returns true if this constraint attribute is valid.
-- By default, true is returned.
-- When the value of a dimension is changed or
-- when a geometry is moved, false is returned
-- until the solver sets it back to true.
GetType (me)
returns ConstraintEnum from TDataXtd;
---Purpose:
-- Returns the type of constraint.
-- This will be an element of the
-- TDataXtd_ConstraintEnum enumeration.
IsPlanar (me)
---Purpose: Returns true if this constraint attribute is
-- two-dimensional.
returns Boolean from Standard;
GetPlane(me)
---C++: return const &
--- Purpose: Returns the topological attribute of the plane
-- used for planar - i.e., 2D - constraints.
-- This plane is attached to another label.
-- If the constraint is not planar, in other words, 3D,
-- this function will return a null handle.
returns NamedShape from TNaming;
IsDimension (me)
---Purpose: Returns true if this constraint attribute is a
-- dimension, and therefore has a value.
returns Boolean from Standard;
GetValue(me)
---C++: return const &
---Purpose: Returns the value of a dimension.
-- This value is a reference to a TDataStd_Real attribute.
-- If the attribute is not a dimension, this value will
-- be 0. Use IsDimension to test this condition.
returns Real from TDataStd;
NbGeometries (me)
---Purpose:
-- Returns the number of geometry attributes in this constraint attribute.
-- This number will be between 1 and 4.
returns Integer from Standard;
GetGeometry (me; Index : Integer from Standard)
---Purpose: Returns the integer index Index used to access
-- the array of the constraint or stored geometries of a dimension
-- Index has a value between 1 and 4.
returns NamedShape from TNaming;
---Purpose: methods to write constraint fields (use builder)
-- ==================================
ClearGeometries (me : mutable);
---Purpose: Removes the geometries involved in the
-- constraint or dimension from the array of
-- topological attributes where they are stored.
SetType (me : mutable; CTR : ConstraintEnum from TDataXtd);
---Purpose: Finds or creates the type of constraint CTR.
SetPlane(me:mutable; plane : NamedShape from TNaming);
---Purpose: Finds or creates the plane of the 2D constraint
-- attribute, defined by the planar topological attribute plane.
SetValue (me : mutable; V : Real from TDataStd);
---Purpose:
-- Finds or creates the real number value V of the dimension constraint attribute.
SetGeometry (me : mutable; Index : Integer from Standard; G : NamedShape from TNaming);
---Purpose:
-- Finds or creates the underlying geometry of the
-- constraint defined by the topological attribute G
-- and the integer index Index.
Verified (me : mutable; status : Boolean from Standard);
---Purpose:
-- Returns true if this constraint attribute defined by status is valid.
-- By default, true is returned.
-- When the value of a dimension is changed or
-- when a geometry is moved, false is returned until
-- the solver sets it back to true.
-- If status is false, Verified is set to false.
-- Category: Angle management
-- ==========================
Inverted(me:mutable; status : Boolean from Standard);
Inverted(me)
returns Boolean from Standard;
Reversed(me:mutable; status : Boolean from Standard);
Reversed(me)
returns Boolean from Standard;
-- Category: Chirality management for DCM
-- ======================================
--ChangeChirality (me:mutable; status : Boolean from Standard);
--ChangeChirality (me)
--returns Boolean from Standard;
---Category: Utilities
-- =========
CollectChildConstraints(myclass;
aLabel : Label from TDF;
TheList:in out LabelList from TDF);
---Purpose: collects constraints on Childs for label <aLabel>
---Category: TDF_Attribute methods
-- =====================
ID (me)
---C++: return const &
returns GUID from Standard;
Restore (me: mutable; With : Attribute from TDF);
NewEmpty (me)
returns mutable Attribute from TDF;
Paste (me; Into : mutable Attribute from TDF;
RT : mutable RelocationTable from TDF);
Dump (me; anOS : in out OStream from Standard)
returns OStream from Standard
is redefined;
---C++: return &
References (me; DS : DataSet from TDF) is redefined;
fields
myType : ConstraintEnum from TDataXtd;
myValue : Real from TDataStd;
myGeometries : Attribute from TDF[4];
myPlane : Attribute from TDF;
myIsReversed : Boolean from Standard;
myIsInverted : Boolean from Standard;
myIsVerified : Boolean from Standard;
end Constraint;
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