-- Created on: 2015-02-18
-- Created by: Nikolai BUKHALOV
-- Copyright (c) 1992-1999 Matra Datavision
-- Copyright (c) 1999-2015 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.

deferred class PointLine from IntPatch 

inherits Line from IntPatch

  ---Purpose: Definition of an intersection line between two
  --          surfaces.
  --          A line defined by a set of points
  --          (e.g. coming from a walking algorithm) as
  --          defined in the class WLine or RLine (Restriction line).


uses TypeTrans          from IntSurf,
     Situation          from IntSurf,
     PntOn2S            from IntSurf     


raises DomainError from Standard,
       OutOfRange  from Standard

is

  Initialize(Tang: Boolean from Standard;
             Trans1,Trans2: TypeTrans from IntSurf);
    
    ---Purpose: To initialize the fields, when the transitions
    --          are In or Out.


  Initialize(Tang: Boolean from Standard;
             Situ1,Situ2: Situation from IntSurf);
    
    ---Purpose: To initialize the fields, when the transitions
    --          are Touch.

  Initialize(Tang: Boolean from Standard);
  
    ---Purpose: To initialize the fields, when the transitions
    --          are Undecided.

  NbPnts(me) returns Integer from Standard
    ---Purpose: Returns the number of intersection points.
  
    is deferred;

  Point(me; Index : Integer from Standard) returns PntOn2S from IntSurf
    ---Purpose: Returns the intersection point of range Index.

    ---C++: return const&
    
    raises OutOfRange  from Standard,
           DomainError from Standard
    --- The exception DomainError is raised if HasPolygon returns False.
    --- The exception OutOfRange is raised if Index <= 0 or Index > NbPnts.
    
    is deferred;
    
-- fields

end Line;