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-- File:	BRepLib_FindSurface.cdl
-- Created:	Fri Jul 22 11:31:40 1994
-- Author:	Remi LEQUETTE
--		<rle@bravox>
---Copyright:	 Matra Datavision 1994



class FindSurface from BRepLib 

	---Purpose: Provides an  algorithm to find  a Surface  through a
	--          set of edges.
	--          
	--          The edges  of  the  shape  given  as  argument are
	--          explored if they are not coplanar at  the required
	--          tolerance  the method Found returns false.
	--          
	--          If a null tolerance is given the max of the  edges
	--          tolerances is used.
	--          
	--          The method Tolerance returns the true distance  of
	--          the edges to the Surface.
	--          
	--          The method Surface returns the Surface if found.
	--          
	--          The method Existed  returns returns  True  if  the
	--          Surface was already attached to some of the edges.
	--          
	--          When Existed  returns True  the  Surface  may have a
	--          location given by the Location method.

uses
    
    Shape    from TopoDS,
    Location from TopLoc,
    Surface    from Geom

raises

    NoSuchObject from Standard

is

    Create returns FindSurface from BRepLib;
    
    Create (S         : Shape   from TopoDS; 
    	    Tol       : Real    from Standard = -1;
    	    OnlyPlane : Boolean from Standard = Standard_False)
	---Purpose: Computes the Surface from the edges of  <S> with the
	--          given tolerance.
	--          if <OnlyPlane> is true, the computed surface will be
	--          a plane. If it is not possible to find a plane, the
	--          flag NotDone will be set.
    returns FindSurface from BRepLib;
    
    Init (me : in out; 
          S         : Shape   from TopoDS; 
    	  Tol       : Real    from Standard = -1;
    	  OnlyPlane : Boolean from Standard = Standard_False)
	---Purpose: Computes the Surface from the edges of  <S> with the
	--          given tolerance.
	--          if <OnlyPlane> is true, the computed surface will be
	--          a plane. If it is not possible to find a plane, the
	--          flag NotDone will be set.
    is static;

    Found(me) returns Boolean
    is static;
    
    Surface(me) returns mutable Surface from Geom
    is static;
    
    Tolerance(me) returns Real
    is static;
    
    ToleranceReached(me) returns Real
    is static;
    
    Existed(me) returns Boolean
    is static;
    
    Location(me) returns Location from TopLoc
    is static;
    
fields

    mySurface    : Surface from Geom;
    myTolerance  : Real;
    myTolReached : Real;
    isExisted    : Boolean;
    myLocation   : Location from TopLoc;

end FindSurface;