-- Created on: 1998-07-07
-- Created by: Christian CAILLET
-- Copyright (c) 1998-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.



class Assembly  from STEPConstruct

    ---Purpose : This operator creates an item of an assembly, from its
    --           basic data : a ShapeRepresentation, a Location ...
    --           
    --           Three ways of coding such item from a ShapeRepresentation :
    --           - do nothing : i.e. informations for assembly are ignored
    --           - create a MappedItem
    --           - create a RepresentationRelationship (WithTransformation)

uses
    Trsf from gp,
    InterfaceModel from Interface, 
    Axis2Placement3d from StepGeom,
    ShapeRepresentation from StepShape,
    ShapeDefinitionRepresentation from StepShape,
    NextAssemblyUsageOccurrence from StepRepr,
    ContextDependentShapeRepresentation from StepShape
is

    Create returns Assembly from STEPConstruct;

    Init (me: in out; aSR, SDR0: ShapeDefinitionRepresentation from StepShape;
    	              Ax0, Loc : Axis2Placement3d from StepGeom);
    ---Purpose : Initialises with starting values
    --           Ax0 : origin axis (typically, standard XYZ)
    --           Loc : location to which place the item

--    MakeMappedItem (me: in out);
    ---Purpose : Makes a MappedItem
    --           Resulting Value is returned by ItemValue

    MakeRelationship (me: in out);
    ---Purpose : Make a (ShapeRepresentationRelationship,...WithTransformation)
    --           Resulting Value is returned by ItemValue

    ItemValue (me) returns Transient;
    ---Purpose : Returns the Value
    --           If no Make... has been called, returns the starting SR

    ItemLocation (me) returns Axis2Placement3d from StepGeom;
    ---Purpose : Returns the location of the item, computed from starting aLoc

    GetNAUO (me) returns NextAssemblyUsageOccurrence from StepRepr;
    	---Purpose: Returns NAUO object describing the assembly link

    CheckSRRReversesNAUO (myclass; Model: InterfaceModel from Interface; 
    	    	    	           CDSR : ContextDependentShapeRepresentation from StepShape)
    returns Boolean;
    	---Purpose: Checks whether SRR's definition of assembly and component contradicts
        --          with NAUO definition or not, according to model schema (AP214 or AP203)
	--          
	
fields

    thesdr : ShapeDefinitionRepresentation from StepShape;
    thesdr0: ShapeDefinitionRepresentation from StepShape;
    thesr  : ShapeRepresentation from StepShape;
    thesr0 : ShapeRepresentation from StepShape;
    theval : Transient;
    theloc : Axis2Placement3d from StepGeom;
    theax0 : Axis2Placement3d from StepGeom;

end Assembly;