-- File:	MAT2d_Connexion.cdl
-- Created:	Thu Oct  7 15:40:54 1993
-- Author:	Yves FRICAUD
--		<yfr@phylox>
---Copyright:	 Matra Datavision 1993


class Connexion from MAT2d 
     
inherits  

    TShared from MMgt
    
	---Purpose: A Connexion links two lines of items  in a set
	--          of  lines. It s contains two  points and their paramatric
	--          definitions on the lines.
	--          The items can be points or curves.

uses
    Pnt2d from gp 

is

    Create returns mutable Connexion from MAT2d;
    
    Create(LineA        : Integer;
	   LineB        : Integer;
           ItemA        : Integer;
           ItemB        : Integer;
           Distance     : Real;
           ParameterOnA : Real;
           ParameterOnB : Real;
           PointA       : Pnt2d from gp;
           PointB       : Pnt2d from gp)
    returns mutable Connexion from MAT2d;	    	   

    IndexFirstLine(me) returns Integer
    	---Purpose:  Returns the Index on the first line.
    is static;
    
    IndexSecondLine(me) returns Integer
    	---Purpose:  Returns the Index on the Second line.
    is static;
    
    IndexItemOnFirst(me) returns Integer
    	---Purpose: Returns the Index of the item on the first line.
    is static;
    
    IndexItemOnSecond(me) returns Integer
    	---Purpose: Returns the Index of the item on the second line.
    is static;
    
    ParameterOnFirst(me) returns Real
    	---Purpose: Returns the parameter of the point on the firstline.
    is static;
    
    ParameterOnSecond(me) returns Real
    	---Purpose: Returns the parameter of the point on the secondline.
    is static;
    
    PointOnFirst(me) returns Pnt2d from gp
    	---Purpose: Returns the point on the firstline.
    is static;
    
    PointOnSecond(me) returns Pnt2d from gp
        ---Purpose: Returns the point on the secondline.
    is static;

    Distance (me) returns Real
	---Purpose: Returns the distance between the two points.    
    is static;
    
    IndexFirstLine(me : mutable ; anIndex : Integer)
    is static;
    
    IndexSecondLine(me : mutable ; anIndex : Integer)
    is static;
    
    IndexItemOnFirst(me : mutable ; anIndex : Integer)
    is static;
    
    IndexItemOnSecond(me : mutable ; anIndex : Integer)
    is static;
    
    ParameterOnFirst(me : mutable ; aParameter : Real)
    is static;
    
    ParameterOnSecond(me : mutable ; aParameter : Real)
    is static;
    
    PointOnFirst(me : mutable ; aPoint : Pnt2d from gp)
    is static;
    
    PointOnSecond(me : mutable ; aPoint : Pnt2d from gp)
    is static;

    Distance (me : mutable ; aDistance : Real)
    is static;

    Reverse(me)
       ---Purpose: Returns the reverse connexion of <me>.
       --          the firstpoint  is the secondpoint.
       --          the secondpoint is the firstpoint.
    returns mutable Connexion from MAT2d
    is static;
    
    IsAfter(me ; aConnexion : Connexion from MAT2d ; aSense : Real)
       ---Purpose: Returns <True> if my firstPoint is on the same line
       --          than the firstpoint of <aConnexion> and my firstpoint
       --          is after the firstpoint of <aConnexion> on the line.  
       --          <aSense> = 1 if <aConnexion> is on the Left of its
       --          firstline, else <aSense> = -1.
    returns Boolean from Standard
    is static;
    
    Dump (me; Deep : Integer = 0; Offset : Integer = 0)
	---Purpose: Print <me>.
    is static;
			    
fields

    lineA        : Integer;
    lineB        : Integer;
    itemA        : Integer;
    itemB        : Integer;
    distance     : Real;
    parameterOnA : Real;
    parameterOnB : Real;
    pointA       : Pnt2d from gp;
    pointB       : Pnt2d from gp;
    
end Connexion;