-- File:	ApproxInt_SvSurfaces.cdl
-- Created:	Wed Mar 17 12:19:46 1993
-- Author:	Laurent BUCHARD
--		<lbr@sdsun2>
---Copyright:	 Matra Datavision 1993

deferred class SvSurfaces from ApproxInt

uses 
    Pnt     from gp,
    Pnt2d   from gp,
    Vec     from gp,
    Vec2d   from gp

is 

    Delete(me:out) is virtual;
    ---C++: alias "Standard_EXPORT virtual ~ApproxInt_SvSurfaces(){Delete() ; }"
    
    Compute(me: in out; 
            u1,v1,u2,v2: in out Real from Standard;
	    Pt: out Pnt from gp;
	    Tg: out Vec from gp;
	    Tguv1,Tguv2: out Vec2d from gp)
	    ---Purpose: returns True if Tg,Tguv1 Tguv2 can be computed.
       returns Boolean from Standard is deferred;

    Pnt(me: in out;
    	u1,v1,u2,v2: in Real from Standard;
    	P: out Pnt from gp)  is deferred;

    Tangency(me: in out;
    	     u1,v1,u2,v2: in Real from Standard;
	     Tg: out Vec from gp)
       returns Boolean from Standard is deferred;

    TangencyOnSurf1(me: in out;
    	            u1,v1,u2,v2: in Real from Standard;
	            Tg: out Vec2d from gp)
       returns Boolean from Standard is deferred;

    TangencyOnSurf2(me: in out;
    	            u1,v1,u2,v2: in Real from Standard;
	            Tg: out Vec2d from gp)
       returns Boolean from Standard is deferred;   
    
end SvSurfaces;