-- File:	Plate_GtoCConstraint.cdl
-- Created:	Thu Oct 19 18:06:18 1995
-- Author:	Andre LIEUTIER
--		<ds@sgi63>
---Copyright:	 Matra Datavision 1995

class GtoCConstraint from Plate
---Purpose: define a G1, G2  or G3 constraint on the Plate
--          

uses 
 XY from gp, 
 XYZ from gp, 
 D1 from Plate, 
 D2 from Plate, 
 D3 from Plate, 
 PinpointConstraint from Plate

is 
    Create(ref  :  GtoCConstraint  from  Plate) returns GtoCConstraint;
     
    Create(point2d : XY ; D1S , D1T : D1 ) returns GtoCConstraint;
    -- G1 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface

    Create(point2d : XY ; D1S , D1T : D1;
       nP : XYZ from gp ) returns GtoCConstraint;
    -- G1 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface
    -- nP : normal vector to tge Plane in which we want the correction to occur

    Create(point2d : XY from gp; D1S , D1T : D1 from Plate;
       D2S, D2T : D2 from Plate) returns GtoCConstraint;
    -- G2 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface
    -- D2S : second derivative of  S, the surface we want to  correct 
    -- D2T : second derivative of the reference surface

    Create(point2d : XY from gp; D1S , D1T : D1 from Plate;
       D2S, D2T : D2 from Plate;
       nP : XYZ from gp ) returns GtoCConstraint;
    -- G2 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface
    -- D2S : second derivative of  S, the surface we want to  correct 
    -- D2T : second derivative of the reference surface
    -- nP : normal vector to tge Plane in which we want the correction to occur

    Create(point2d : XY from gp; D1S , D1T : D1 from Plate;
       D2S, D2T : D2 from Plate;
       D3S, D3T : D3 from Plate) returns GtoCConstraint;
    -- G3 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface
    -- D2S : second derivative of  S, the surface we want to  correct 
    -- D2T : second derivative of the reference surface
    -- D3S : third derivative of  S, the surface we want to  correct 
    -- D3T : third derivative of the reference surface

    Create(point2d : XY from gp; D1S , D1T : D1 from Plate;
       D2S, D2T : D2 from Plate;
       D3S, D3T : D3 from Plate;
       nP : XYZ from gp ) returns GtoCConstraint;
    -- G3 constraint:   
    -- D1S : first  derivative of  S, the surface we want to  correct 
    -- D1T : first derivative of the reference surface
    -- D2S : second derivative of  S, the surface we want to  correct 
    -- D2T : second derivative of the reference surface
    -- D3S : third derivative of  S, the surface we want to  correct 
    -- D3T : third derivative of the reference surface
    -- nP : normal vector to tge Plane in which we want the correction to occur

    -- Accessors :
    nb_PPC(me) returns Integer;
    ---C++: inline 
    ---C++: return const &

    GetPPC(me;  Index:  Integer) returns PinpointConstraint; 
    --	"C style" Index :  Index : 0 --> nb_PPC-1
    --	
    ---C++: inline 
    ---C++: return const &

    D1SurfInit(me) returns D1; 
    --	
    ---C++: inline 
    ---C++: return const &

fields

    myPPC : PinpointConstraint[9]; 
    myD1SurfInit  :  D1;  
    pnt2d : XY ;    
    nb_PPConstraints : Integer;

end;