-- File:	IGESToBRep_IGESBoundary.cdl
-- Created:	Wed Dec 16 16:27:16 1998
-- Author:	Roman LYGIN
--		<rln@kinox.nnov.matra-dtv.fr>
---Copyright:	 Matra Datavision 1998


class IGESBoundary from IGESToBRep inherits TShared from MMgt

    ---Purpose: This class is intended to translate IGES boundary entity
    --          (142-CurveOnSurface, 141-Boundary or 508-Loop) into the wire.
    --          Methods Transfer are virtual and are redefined in Advanced
    --          Data Exchange to optimize the translation and take into
    --          account advanced parameters.

uses

    Trsf2d              from gp,
    Face                from TopoDS,
    IGESEntity          from IGESData,
    HArray1OfIGESEntity from IGESData,
    CurveAndSurface     from IGESToBRep,
    WireData            from ShapeExtend

is

    Create returns mutable IGESBoundary from IGESToBRep;
    	---Purpose: Empty constructor

    Create (CS: CurveAndSurface from IGESToBRep) returns mutable IGESBoundary from IGESToBRep;
    	---Purpose: Empty constructor
	
    Init (me: mutable; CS            : CurveAndSurface from IGESToBRep;
    	    	       entity        : IGESEntity from IGESData;
    	    	       face          : Face   from TopoDS;
		       trans         : Trsf2d from gp;
                       uFact         : Real;
		       filepreference: Integer);
    	---Purpose: Inits the object with parameters common for all
    	--          types of IGES boundaries.
	--          <CS>: object to be used for retrieving translation parameters
	--                and sending messages,
	--          <entity>: boundary entity to be processed,
	--          <face>, <trans>, <uFact>: as for IGESToBRep_TopoCurve
	--          <filepreference>: preferred representation (2 or 3) given
    	--                            in the IGES file
	
    WireData (me) returns WireData from ShapeExtend;
     	---Purpose: Returns the resulting wire
	---C++: inline
	
    WireData3d (me) returns WireData from ShapeExtend;
     	---Purpose: Returns the wire from 3D curves (edges contain 3D curves
    	--          and may contain pcurves)
	---C++: inline

    WireData2d (me) returns WireData from ShapeExtend;
     	---Purpose: Returns the the wire from 2D curves (edges contain pcurves
    	--          only)
	---C++: inline
	
    Transfer (me: mutable; okCurve    : in out Boolean;
			   okCurve3d  : in out Boolean;
			   okCurve2d  : in out Boolean;
    	    	    	   curve3d    : IGESEntity from IGESData;
			   toreverse3d: Boolean;
			   curves2d   : HArray1OfIGESEntity from IGESData;
    	    	    	   number     : Integer)
    returns Boolean;
    	---Purpose: Translates 141 and 142 entities.
	--          Returns True if the curve has been successfully translated,
	--          otherwise returns False.
	--          <okCurve..>: flags that indicate whether corresponding
    	--                       representation has been successfully translated
	--                       (must be set to True before first call),
	--          <curve3d>: model space curve for 142 and current model space
    	--                     curve for 141,
	--          <toreverse3d>: False for 142 and current orientation flag
    	--                         for 141,
	--          <curves2d>: 1 parameter space curve for 142 or list of
    	--                      them for current model space curves for 141,
	--          <number>: 1 for 142 and rank number of model space curve for 141.
			   
    Transfer (me: mutable; okCurve    : in out Boolean;
			   okCurve3d  : in out Boolean;
			   okCurve2d  : in out Boolean;
    	    	    	   curve3d    : WireData from ShapeExtend;
		           curves2d   : HArray1OfIGESEntity from IGESData;
			   toreverse2d: Boolean;
    	    	    	   number     : Integer;
    	    	    	   lsewd      : out WireData from ShapeExtend)
    returns Boolean;
     	---Purpose: Translates 508 entity.
	--          Returns True if the curve has been successfully translated,
	--          otherwise returns False.
	--          Input object IGESBoundary must be created and initialized
    	--          before.
	--          <okCurve..>: flags that indicate whether corresponding
    	--                       representation has been successfully translated
	--                       (must be set to True before first call),
	--          <curve3d>: result of translation of current edge,
	--          <curves2d>: list of parameter space curves for edge,
	--          <toreverse2d>: orientation flag of current edge in respect
	--                         to its model space curve,
	--          <number>: rank number of edge,
	--          <lsewd>: returns the result of translation of current edge.
	
    Check (me: mutable; result, checkclosure, okCurve3d, okCurve2d: Boolean) is virtual;
    	---Purpose: Checks result of translation of IGES boundary entities
    	--          (types 141, 142 or 508).
	--          Checks consistency of 2D and 3D representations and keeps
	--          only one if they are inconsistent.
	--          <result>: result of translation (returned by Transfer),
	--          <checkclosure>: False for 142 without parent 144 entity,
    	--                          otherwise True,
	--          <okCurve3d>, <okCurve2d>: those returned by Transfer.
	---Remark : Empty method for Open CASCADE and implemented for Advanced
	--          Data Exchange.
    ---Level: Internal
		    
    Transfer (me: mutable; okCurve    : in out Boolean;
			   okCurve3d  : in out Boolean;
			   okCurve2d  : in out Boolean;
    	    	    	   icurve3d   : IGESEntity from IGESData;
    	    	    	   scurve3d   : WireData from ShapeExtend;
			   usescurve  : Boolean;
			   toreverse3d: Boolean;
			   curves2d   : HArray1OfIGESEntity from IGESData;
			   toreverse2d: Boolean;
    	    	    	   number     : Integer;
    	    	    	   lsewd      : out WireData from ShapeExtend)
    returns Boolean is virtual protected;
     	---Purpose: Methods called by both Transfer methods.
	
    ReverseCurves3d (myclass; sewd: WireData from ShapeExtend) is protected;
    ReverseCurves2d (myclass; sewd: WireData from ShapeExtend;
    	    	    	      face: Face from TopoDS) is protected;

fields

    myCS            : CurveAndSurface from IGESToBRep is protected;
    myentity        : IGESEntity from IGESData is protected;
    mysewd          : WireData from ShapeExtend is protected; -- resulting wire
    mysewd3d        : WireData from ShapeExtend is protected; -- wire from 3D curves (edges contain 3D curves and may contain pcurves)
    mysewd2d        : WireData from ShapeExtend is protected; -- wire from 2D curves (edges contain pcurves only)
    myface          : Face     from TopoDS is protected;
    mytrsf          : Trsf2d   from gp is protected;
    myuFact         : Real is protected;
    myfilepreference: Integer is protected;

end IGESBoundary;