-- File:	QuadricTool.cdl
-- Created:	Wed Sep 30 12:42:33 1992
-- Author:	Jacques GOUSSARD
--		<jag@topsn2>
---Copyright:	 Matra Datavision 1992


class QuadricTool from IntSurf

	---Purpose: This class provides a tool on a quadric that can be
	--          used to instantiates the Walking algorithmes (see
	--          package IntWalk) with a Quadric from IntSurf
	--          as implicit surface.

uses Quadric from IntSurf,
     Vec     from gp

is

    Value(myclass; Quad: Quadric from IntSurf;
          X, Y, Z: Real from Standard)
	  
    	---Purpose: Returns the value of the function.
    
    	returns Real from Standard;
	
	---C++: inline
    
    
    Gradient(myclass; Quad: Quadric from IntSurf;
             X, Y, Z: Real from Standard ; V : out Vec from gp);
	     
    	---Purpose: Returns the gradient of the function.

	---C++: inline
    


    ValueAndGradient(myclass; Quad: Quadric from IntSurf;
                     X, Y, Z: Real from Standard;
                     Val: out Real from Standard; Grad: out Vec from gp);
		     
    	---Purpose: Returns the value and the gradient.

	---C++: inline
    

    Tolerance(myclass; Quad: Quadric from IntSurf )
    
	---Purpose: returns the tolerance of the zero of the implicit function

    	returns Real from Standard; 


end QuadricTool;