-- File:	MakeSegment.cdl
-- Created:	Mon Sep 28 11:49:59 1992
-- Author:	Remi GILET
--		<reg@sdsun2>
---Copyright:	 Matra Datavision 1992

class MakeSegment from GCE2d inherits Root from GCE2d

    	---Purpose: Implements construction algorithms for a line
    	-- segment in the plane. The result is a
    	-- Geom2d_TrimmedCurve curve.
    	-- A MakeSegment object provides a framework for:
    	-- -   defining the construction of the line segment,
    	-- -   implementing the construction algorithm, and
    	-- -   consulting the results. In particular, the Value
    	--   function returns the constructed line segment.
        
uses Pnt2d        from gp,
     Real         from Standard,
     Lin2d        from gp,
     Dir2d        from gp,
     TrimmedCurve from Geom2d

raises NotDone from StdFail

is

Create(P1, P2 : Pnt2d from gp ) returns MakeSegment;
    	---Purpose: Make a segment of Line from the 2 points <P1> and <P2>.
    	--          Status is "ConfusedPoints" if <P1> and <P2> are confused.

Create(P1 : Pnt2d from gp ;
       V  : Dir2d from gp ;
       P2 : Pnt2d from gp ) returns MakeSegment;
    	---Purpose: Make a segment of Line from the point <P1> with 
    	--          the direction <P> and ended by the projection of 
    	--          <P2> on the line <P1,V>.
    	--          Status is "ConfusedPoints" if <P1> and <P2> are confused.
	
Create(Line   : Lin2d  from gp       ;
       U1, U2 : Real from Standard ) returns MakeSegment;
    	---Purpose: Make a segment of Line from the line <Line> 
    	--          between the two parameters U1 and U2.
    	--          Status is "SameParamters" if <U1> is equal <U2>.

Create(Line   : Lin2d  from gp       ;
       Point  : Pnt2d  from gp       ;
       Ulast  : Real   from Standard ) returns MakeSegment;
    	---Purpose: Make a segment of Line from the line <Line> 
    	--          between the point <Point> and the parameter Ulast.
    	--          It returns NullObject if <U1> is equal <U2>.

Create(Line  : Lin2d from gp ;
       P1    : Pnt2d from gp ;
       P2    : Pnt2d from gp ) returns MakeSegment;
    	---Purpose: Make a segment of Line from the line <Line> 
    	--          between the two points <P1> and <P2>.
    	--          It returns NullObject if <P1> and <P2> are confused.
    	-- Warning
    	-- If the points which limit the segment are coincident
    	-- for given points or for the projection of given points
    	-- on the line which supports the line segment (that is,
    	-- when IsDone returns false), the Status function
    	-- returns gce_ConfusedPoints. This warning only
    	-- concerns the first two constructors.
        
Value(me) returns TrimmedCurve from Geom2d
    raises NotDone
    is static;
      	---C++: return const&
      	---Purpose: Returns the constructed line segment.
      	-- Exceptions StdFail_NotDone if no line segment is constructed.

Operator(me) returns TrimmedCurve from Geom2d
    is static;
    	---C++: return const&
    	---C++: alias "Standard_EXPORT operator Handle_Geom2d_TrimmedCurve() const;"

fields

    TheSegment : TrimmedCurve from Geom2d;
    --The solution from Geom2d.
    
end MakeSegment;