-- File:	HLRBRep_PolyHLRToShape.cdl
-- Created:	Mon Oct 11 16:45:31 1993
-- Author:	Christophe MARION
--		<cma@nonox>
---Copyright:	 Matra Datavision 1993

class PolyHLRToShape from HLRBRep


    	--- Purpose: A framework for filtering the computation
    	-- results of an HLRBRep_Algo algorithm by extraction.
    	-- From the results calculated by the algorithm on
    	-- a shape, a filter returns the type of edge you
    	-- want to identify. You can choose any of the following types of output:
    	-- -   visible sharp edges
    	-- -   hidden sharp edges
    	-- -   visible smooth edges
    	-- -   hidden smooth edges
    	-- -   visible sewn edges
    	-- -   hidden sewn edges
    	-- -   visible outline edges
    	-- -   hidden outline edges.
    	-- -   visible isoparameters and
    	-- -   hidden isoparameters.
    	-- Sharp edges present a C0 continuity (non G1).
    	-- Smooth edges present a G1 continuity (non G2).
    	-- Sewn edges present a C2 continuity.
    	-- The result is composed of 2D edges in the
    	-- projection plane of the view which the
    	-- algorithm has worked with. These 2D edges
    	-- are not included in the data structure of the visualized shape.
    	-- In order to obtain a complete image, you must
    	-- combine the shapes given by each of the chosen filters.
    	-- The construction of the shape does not call a
    	-- new computation of the algorithm, but only
    	-- reads its internal results.
uses
    Boolean      from Standard,
    Integer      from Standard,
    Shape        from TopoDS,
    ListOfBPnt2D from HLRBRep,
    PolyAlgo     from HLRBRep

is
    Create
    returns PolyHLRToShape from HLRBRep;
    	---Purpose: Constructs a framework for filtering the results
    	-- of the HLRBRep_Algo algorithm, A.
    	-- Use the extraction filters to obtain the results you want for A.
    Update(me : in out; A : PolyAlgo from HLRBRep)
    is static;

    Show(me : in out)
    	---C++: inline
    is static;

    Hide(me : in out)
    	---C++: inline
    is static;

    VCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    VCompound(me : in out;
              S  : Shape from TopoDS) returns Shape from TopoDS
    	---C++: inline
    is static;

    Rg1LineVCompound(me : in out) returns Shape from TopoDS
    	---Purpose: Sets the extraction filter for visible smooth edges.
      	---C++: inline
    is static;

    Rg1LineVCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
    	---C++: inline
    is static;

    RgNLineVCompound(me : in out) returns Shape from TopoDS
    	--- Purpose: Sets the extraction filter for visible sewn edges.
     	---C++: inline
    is static;

    RgNLineVCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
    	---C++: inline
    is static;

    OutLineVCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    OutLineVCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
    	---Purpose: Sets the extraction filter for visible outlines.
        ---C++: inline
    is static;

    HCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    HCompound(me : in out;
              S  : Shape from TopoDS) returns Shape from TopoDS
    	---C++: inline
    is static;

    Rg1LineHCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    Rg1LineHCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
  	  ---C++: inline
  	  --- Purpose: Sets the extraction filter for hidden smooth edges.
    is static;

    RgNLineHCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    RgNLineHCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
    	---Purpose: Sets the extraction filter for hidden sewn edges.
       	---C++: inline
    is static;

    OutLineHCompound(me : in out) returns Shape from TopoDS
    	---C++: inline
    is static;

    OutLineHCompound(me : in out;
                     S  : Shape from TopoDS) returns Shape from TopoDS
    	---Purpose: Sets the extraction filter for hidden outlines.
    	-- Hidden outlines occur, for instance, in tori. In
    	-- this case, the inner outlines of the torus seen on its side are hidden.
       	---C++: inline
    is static;

    InternalCompound(me : in out; typ     : Integer from Standard;
                                  visible : Boolean from Standard;
                                  S       : Shape   from TopoDS)
    returns Shape from TopoDS
    is static private;
    
fields
    myAlgo     : PolyAlgo     from HLRBRep;
    myBiPntVis : ListOfBPnt2D from HLRBRep;
    myBiPntHid : ListOfBPnt2D from HLRBRep;
    myHideMode : Boolean      from Standard;

end PolyHLRToShape;