-- File:	Intersector.cdl
-- Created:	Wed Aug 26 18:11:37 1992
-- Author:	Christophe MARION
--		<cma@sdsun2>
---Copyright:	 Matra Datavision 1992

class Intersector from HLRBRep

	---Purpose: The Intersector  computes 2D  intersections of the
	--          projections of 3D curves.
	--          
	--          It can also computes the intersection of a 3D line
	--          and a surface.

uses
    Address               from Standard,
    Integer               from Standard,
    Boolean               from Standard,
    Real                  from Standard,
    Lin                   from gp,
    IntersectionPoint     from IntRes2d,
    IntersectionSegment   from IntRes2d,
    IntersectionPoint     from IntCurveSurface,
    IntersectionSegment   from IntCurveSurface,
    Curve                 from HLRBRep,
    CInter                from HLRBRep,
    InterCSurf            from HLRBRep

raises
    UndefinedDerivative from StdFail

is
    Create returns Intersector from HLRBRep;
    
    Perform(me      : in out; 
            A1      : Address from Standard; -- as HLRBRep_EDataOfData 
            da1,db1 : Real    from Standard)
	 ---Purpose: Performs the auto  intersection  of  an edge. The
	 --          edge domain is cutted at start with da1*(b-a) and
	 --          at end with db1*(b-a).
    is static;
    
    Perform(me     : in out;
    	    nA      : Integer from Standard;
            A1      : Address from Standard; -- as HLRBRep_EDataOfData
            da1,db1 : Real    from Standard;
	    nB      : Integer from Standard;
            A2      : Address from Standard; -- as HLRBRep_EDataOfData
            da2,db2 : Real    from Standard;
            NoBound : Boolean from Standard)
	 ---Purpose: Performs the  intersection between the two edges.
	 --          The  edges  domains  are  cutted  at  start  with
	 --          da*(b-a) and at end with db*(b-a).
    is static;
    
    
    
    SimulateOnePoint(me:in out;
    	             A1      : Address from Standard; -- as HLRBRep_EDataOfData
		     U       : Real    from Standard;
    	    	     A2      : Address from Standard; -- as HLRBRep_EDataOfData
                     V       : Real    from Standard)
	 ---Purpose: Create a single IntersectionPoint (U on A1) (V on A2)
	 --          The point is middle on both curves. 
    is static;
    
    
    
    
    --
    --    Methods used to intersect a line from the eye with a surface
    --        

    Load(me  : in out; 
         A   : out Address from Standard) -- as BRepAdaptor_Surface
    is static;

    Perform(me  : in out; 
            L   : Lin  from gp;
            P   : Real from Standard)
    is static;

    --
    --    Methods to get the results
    --      

    IsDone(me) returns Boolean from Standard
    is static;

    NbPoints(me) returns Integer from Standard
    is static;

    Point(me; N : Integer from Standard)
    	---C++: return const &
    returns IntersectionPoint from IntRes2d
    is static;

    CSPoint(me; N : Integer from Standard)
    	---C++: return const &
    returns IntersectionPoint from IntCurveSurface
    is static;

    NbSegments(me) returns Integer from Standard
    is static;
	
    Segment(me; N : Integer)
    	---C++: return const &
    returns IntersectionSegment from IntRes2d
    is static;

    CSSegment(me; N : Integer)
    	---C++: return const &
    returns IntersectionSegment from IntCurveSurface
    is static;

    Destroy(me : in out);
	---C++: alias ~
    
fields
    mySinglePoint   : IntersectionPoint from IntRes2d;
    myTypePerform   : Integer           from Standard;
    myIntersector   : CInter            from HLRBRep;
    myCSIntersector : InterCSurf        from HLRBRep;
    mySurface       : Address           from Standard;
    myPolyhedron    : Address           from Standard;

end Intersector;