// Created on: 1998-07-07
// Created by: Christian CAILLET
// Copyright (c) 1998-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _STEPConstruct_Assembly_HeaderFile
#define _STEPConstruct_Assembly_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

class StepShape_ShapeDefinitionRepresentation;
class StepShape_ShapeRepresentation;
class StepGeom_Axis2Placement3d;
class StepRepr_NextAssemblyUsageOccurrence;
class StepShape_ContextDependentShapeRepresentation;
class Interface_Graph;


//! This operator creates and checks 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. information for assembly are ignored
//! - create a MappedItem
//! - create a RepresentationRelationship (WithTransformation)
class STEPConstruct_Assembly 
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT STEPConstruct_Assembly();
  
  //! Initialises with starting values
  //! Ax0 : origin axis (typically, standard XYZ)
  //! Loc : location to which place the item
  //! Makes a MappedItem
  //! Resulting Value is returned by ItemValue
  Standard_EXPORT void Init (const Handle(StepShape_ShapeDefinitionRepresentation)& aSR, const Handle(StepShape_ShapeDefinitionRepresentation)& SDR0, const Handle(StepGeom_Axis2Placement3d)& Ax0, const Handle(StepGeom_Axis2Placement3d)& Loc);
  
  //! Make a (ShapeRepresentationRelationship,...WithTransformation)
  //! Resulting Value is returned by ItemValue
  Standard_EXPORT void MakeRelationship();
  
  //! Returns the Value
  //! If no Make... has been called, returns the starting SR
  Standard_EXPORT Handle(Standard_Transient) ItemValue() const;
  
  //! Returns the location of the item, computed from starting aLoc
  Standard_EXPORT Handle(StepGeom_Axis2Placement3d) ItemLocation() const;
  
  //! Returns NAUO object describing the assembly link
  Standard_EXPORT Handle(StepRepr_NextAssemblyUsageOccurrence) GetNAUO() const;
  
  //! Checks whether SRR's definition of assembly and component contradicts
  //! with NAUO definition or not, according to model schema (AP214 or AP203)
  Standard_EXPORT static Standard_Boolean CheckSRRReversesNAUO (const Interface_Graph& theGraph, const Handle(StepShape_ContextDependentShapeRepresentation)& CDSR);




protected:





private:



  Handle(StepShape_ShapeDefinitionRepresentation) thesdr;
  Handle(StepShape_ShapeDefinitionRepresentation) thesdr0;
  Handle(StepShape_ShapeRepresentation) thesr;
  Handle(StepShape_ShapeRepresentation) thesr0;
  Handle(Standard_Transient) theval;
  Handle(StepGeom_Axis2Placement3d) theloc;
  Handle(StepGeom_Axis2Placement3d) theax0;


};







#endif // _STEPConstruct_Assembly_HeaderFile
