-- Created on: 1994-03-23
-- Created by: Jean Marc LACHAUME
-- Copyright (c) 1994-1999 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.

class Intersector from Geom2dHatch

inherits GInter from Geom2dInt

uses

    Curve from Geom2dAdaptor,
    Lin2d from gp,
    Dir2d from gp
    
is

    Create (Confusion : Real from Standard ;
    	    Tangency  : Real from Standard)

    	---Purpose: Creates an intersector.

    	---C++: inline

    	returns Intersector from Geom2dHatch ;


    ConfusionTolerance (me)

    	---Purpose: Returns the confusion tolerance of the
    	--          intersector.

    	---C++: inline

    	returns Real from Standard
	is static ;


    SetConfusionTolerance (me : in out ;
    	    	    	   Confusion : Real from Standard)

    	---Purpose: Sets the confusion tolerance of the intersector.

    	---C++: inline

	is static ;


    TangencyTolerance (me)

    	---Purpose: Returns the tangency tolerance of the
    	--          intersector.

    	---C++: inline

    	returns Real from Standard
	is static ;


    SetTangencyTolerance (me : in out ;
    	    	    	  Tangency : Real from Standard)

    	---Purpose: Sets the tangency tolerance of the intersector.

    	---C++: inline

	is static ;


    Intersect (me : in out ; C1 : Curve from Geom2dAdaptor ;
    	       	    	     C2 : Curve from Geom2dAdaptor )

    	---Purpose: Intersects the curves C1 and C2.
    	--          The results are retreived by the usual methods
    	--          described in IntRes2d_Intersection.

    	---C++: inline

    	is static ;

-------------------------------------------------------------------------
---- M e t h o d s   u s e d   b y   t h e   C l a s s i f i e r 2 d  ---
-------------------------------------------------------------------------
    Create

    	---Purpose: Creates an intersector.

    	---C++: inline

    	returns Intersector from Geom2dHatch ;

    Perform(me    : in out;
             L    :         Lin2d from gp; 
             P    :         Real  from Standard; 
             Tol  :         Real  from Standard; 
             E    :         Curve from Geom2dAdaptor) -- en fait in out
	     
	---Purpose: Performs the intersection   between the  2d   line
	--          segment (<L>, <P>) and  the  Curve <E>.  The  line
	--          segment  is the  part  of  the  2d   line   <L> of
	--          parameter range [0, <P>] (P is positive and can be
	--          RealLast()). Tol is the  Tolerance on the segment.
	--          The order  is relevant, the  first argument is the
	--          segment, the second the Edge.
    is static;
	
    LocalGeometry(me; 
                  E :     Curve from Geom2dAdaptor;
                  U :     Real  from Standard; 
    	    	  T : out Dir2d from gp; 
    	    	  N : out Dir2d from gp;
                  C : out Real)
		  
	---Purpose: Returns in <T>,  <N> and <C>  the tangent,  normal
	--          and  curvature of the edge  <E> at parameter value
	--          <U>.
    is static;

    

fields

    myConfusionTolerance : Real from Standard ;
    myTangencyTolerance  : Real from Standard ;

end Intersector from Geom2dHatch ;