-- File:	AppCont_FunctionTool2d.cdl
-- Created:	Wed Sep  1 15:20:45 1993
-- Author:	Laurent PAINNOT
--		<lpa@nonox>
---Copyright:	 Matra Datavision 1993


class FunctionTool2d from AppCont


uses Function2d      from AppCont,
     Pnt             from gp,
     Pnt2d           from gp,
     Vec             from gp,
     Vec2d           from gp,
     Array1OfPnt     from TColgp,
     Array1OfPnt2d   from TColgp,
     Array1OfVec     from TColgp,
     Array1OfVec2d   from TColgp

is
    
    FirstParameter(myclass; C: Function2d from AppCont) returns Real;
    	---Purpose: returns the first parameter of the Function.

    LastParameter(myclass; C: Function2d from AppCont) returns Real;
    	---Purpose: returns the last parameter of the Function.

    NbP2d(myclass; C: Function2d from AppCont) returns Integer;
    	---Purpose: Returns 1. (the approximation will be done only for one 
    	--          function.


    NbP3d(myclass; C: Function2d from AppCont) returns Integer;
    	---Purpose: Returns 0.

    Value(myclass; C: Function2d from AppCont; 
          U: Real; tabPt: out Array1OfPnt2d);
    	---Purpose: <tabP> is an array of only 1 element, the point value at
    	--          the parameter <U>.


    D1(myclass; C: Function2d from AppCont; U: Real; tabV: out Array1OfVec2d)
    returns Boolean;
    	---Purpose: <tabV> is an array of only 1 element, the derivative 
    	--          value at the parameter <U>.


    ----------------------------------------------------------
    -- the following methods won t be called by the algorithms
    -- but the description must exist in the tool.
    ----------------------------------------------------------



    Value(myclass; C: Function2d from AppCont;U: Real; 
    	  tabPt2d: out Array1OfPnt);
    
    Value(myclass; C: Function2d from AppCont; U: Real; 
    	  tabPt: out Array1OfPnt;
    	  tabPt2d: out Array1OfPnt2d);


    D1(myclass;C: Function2d from AppCont;U: Real; 
    	     tabV2d: out Array1OfVec)
    returns Boolean;


    D1(myclass; C: Function2d from AppCont; U: Real; 
    	     tabV: out Array1OfVec;
	     tabV2d: out Array1OfVec2d)
    returns Boolean;


end FunctionTool2d;