-- Created on: 1993-12-02
-- Created by: Jacques GOUSSARD
-- Copyright (c) 1993-1999 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 Line from BRepBlend inherits TShared from MMgt


uses Point           from Blend,
     SequenceOfPoint from Blend,
     Extremity       from BRepBlend,
     TypeTrans       from IntSurf


raises OutOfRange from Standard


is

    Create
    
    	returns Line from BRepBlend;



    Clear(me: mutable)
    
	---Purpose: Clears the content of the line.

    	is static;



    Append(me: mutable; P: Point from Blend)
    
	---Purpose: Adds a point in the line.

	---C++: inline
    	is static;


    Prepend(me: mutable; P: Point from Blend)
    
	---Purpose: Adds a point in the line at the first place.

	---C++: inline
    	is static;

    InsertBefore(me : mutable;  
                 Index : Integer from Standard; 
                 P : Point from Blend)  
		 
	---Purpose: Adds a point in the line at the first place.

	---C++: inline
    	is static;


    Remove(me: mutable; FromIndex,ToIndex: Integer from Standard)
    
	---Purpose: Removes  from  <me>    all  the  items  of
	-- positions between <FromIndex> and <ToIndex>.
	-- Raises an exception if the indices are out of bounds.
	---C++: inline
      	raises OutOfRange from Standard
    	is static;


    Set(me: mutable; TranS1,TranS2: TypeTrans from IntSurf)
    
	---Purpose: Sets the value of the transition of the line on S1 and
	--          the line on S2.
    
    	is static;


    Set(me: mutable; Trans: TypeTrans from IntSurf)
    
	---Purpose: Sets the value of the transition of the line on a surface
    
    	is static;


    SetStartPoints(me: mutable; StartPt1,StartPt2: Extremity from BRepBlend)
    
	---Purpose: Sets the values of the start points for the line.
    	---C++: inline

    	is static;


    SetEndPoints(me: mutable; EndPt1,EndPt2: Extremity from BRepBlend)
    
	---Purpose: Sets tne values of the end points for the line.
    
	---C++: inline

    	is static;


    NbPoints(me)
    
	---Purpose: Returns the number of points in the line.
    
    	returns Integer from Standard
	---C++: inline
	
	is static;


    Point(me; Index: Integer from Standard)
    
	---Purpose: Returns the point of range Index.
    
    	returns Point from Blend
	---C++: inline
	---C++: return const&

	raises OutOfRange from Standard
	--- The exception OutOfRange is raised when Index <=0 or 
	--  Index > NbPoints

	is static;


    TransitionOnS1(me)
    
	---Purpose: Returns the type of the transition of the line defined
	--          on the first surface. The transition is "constant"
	--          along the line.
	--          The transition is IN if the line is oriented in such
	--          a way that the system of vectors (N,DRac,T) is
	--          right-handed, where
	--                N is the normal to the first surface at a point P,
	--                DRac is a vector tangent to the blending patch,
	--                oriented towards the valid part of this patch,
	--                T  is the tangent to the line on S1 at P.
	--          The transitioon is OUT when the system of vectors is 
	--          left-handed.

    	returns TypeTrans from IntSurf
	---C++: inline

	is static;


    TransitionOnS2(me)
    
	---Purpose: Returns the type of the transition of the line defined
	--          on the second surface. The transition is "constant"
	--          along the line.

    	returns TypeTrans from IntSurf
	---C++: inline

	is static;


    StartPointOnFirst(me)
    
	---Purpose: Returns the start point on S1.
    
    	returns Extremity from BRepBlend
	---C++: inline
	---C++: return const&

	is static;
	

    StartPointOnSecond(me)
    
	---Purpose: Returns the start point on S2
    
    	returns Extremity from BRepBlend
	---C++: inline
	---C++: return const&

	is static;


    EndPointOnFirst(me)
    
	---Purpose: Returns the end point on S1.
    
    	returns Extremity from BRepBlend
	---C++: inline
	---C++: return const&
	
	is static;


    EndPointOnSecond(me)
    
	---Purpose: Returns the point on S2.
    
    	returns Extremity from BRepBlend
	---C++: inline
	---C++: return const&

	is static;


    TransitionOnS(me)
    
	---Purpose: Returns the type of the transition of the line defined
	--          on the surface.

    	returns TypeTrans from IntSurf
	---C++: inline

	is static;


fields
    seqpt  : SequenceOfPoint from Blend;
    tras1  : TypeTrans       from IntSurf;
    tras2  : TypeTrans       from IntSurf;
    stp1   : Extremity       from BRepBlend;
    stp2   : Extremity       from BRepBlend;
    endp1  : Extremity       from BRepBlend;
    endp2  : Extremity       from BRepBlend;
    hass1  : Boolean         from Standard;
    hass2  : Boolean         from Standard;
end;