-- File:	TopOpeBRepTool_mkTondgE.cdl
-- Created:	Mon Mar 22 17:58:04 1999
-- Author:      Xuan PHAM PHU
--		<xpu@poulopox.paris1.matra-dtv.fr>
---Copyright:	 Matra Datavision 1999

class mkTondgE from TopOpeBRepTool
uses 
    Pnt2d from gp,
    Dir from gp,
    Edge from TopoDS,
    Face from TopoDS,
    ListOfShape from TopTools,
    DataMapOfShapeReal from TopTools     
is

    Create returns mkTondgE from TopOpeBRepTool;
    	
    Initialize(me : in out;
    	       dgE : Edge from TopoDS; 
    	       F : Face from TopoDS;
	       uvi : Pnt2d from gp; Fi : Face from TopoDS)
    returns Boolean;
    -- <dgE> degenerated edge interfers with <Fi> at <uvi>.
    -- purpose : the compute of interferences on <dgE> / <Fi>

    SetclE(me : in out; clE : Edge from TopoDS)
    returns Boolean;

    IsT2d(me) returns Boolean;  
	   
    SetRest(me : in out; 
    	    pari : Real; Ei : Edge from TopoDS)
    returns Boolean;
    -- <dgE> interfers with <Ei> at <pari>
    -- returns false if <Ei> has no impact on the output transitions.

    GetAllRest(me : in out; lEi : out ListOfShape from TopTools)
    returns Integer;
    -- finds out <lEi> = {ei / uvi is IN1d(ei)}
    -- fills up field <mylEi>; these edges impact on the output transitions.
    -- (!!!!!!!!!!!! works only for uvi on isos )
    Par(me; index : Integer; pari : out Real) returns Boolean; 
    Ei(me; index : Integer; ei : out Edge from TopoDS) returns Boolean;     
    -- returns false if myEpari<index> is dummy.

    MkTonE(me : in out; mkT : out Integer; par1,par2 : out Real)
    returns Boolean; 
    -- purpose : the compute of transitions on <dgE> vs <myFi>.
    --    call the method if ( !IsT2d() ) 
    --
    -- set mkT to  0 : no transition is to compute
    --             1 : compute transition FORWARD on <dgE> at Par(1)
    --             2 :                    REVERSED on <dgE> at Par(2)
    --             3 : compute transitions at Par(1) and Par(2)
    -- returns false if the compute fails.
    
    MkTonE(me : in out; Ei : Edge from TopoDS; mkT : out Integer; par1,par2 : out Real)
    returns Boolean; 
    -- purpose : the compute of transitions on <dgE> vs <Ei> of <myFi>.
    --           Ei is in list lEi / 
    --           SetRest(..Ei..) has been called before, and returned tru.
    -- 
    -- !!!! NYIXPU240399 : returns 0 if <myf> has no closing edge connexed to <myed>
    -- interference
	
fields    
    mydgE  : Edge from TopoDS; -- in  
    myF    : Face from TopoDS; -- in  

    myclE  : Edge from TopoDS;
    mydirINcle : Dir from gp;
    
    myFi   : Face from TopoDS; -- in
    myuvi  : Pnt2d from gp;    -- in	

    isT2d : Boolean;           -- out

    myEpari : DataMapOfShapeReal from TopTools;

    hasRest : Boolean;         -- out
	
    myngf  : Dir from gp;      
    myngfi : Dir from gp;		    	    
    	
end mkTondgE from TopOpeBRepTool;