--
-- File      :  Torus.cdl
-- Created   :  Sat 9 Jan 1993
-- Author    : CKY / Contract Toubro-Larsen ( SIVA )
--
---Copyright : MATRA-DATAVISION  1993
--

class Torus from IGESSolid  inherits IGESEntity

        ---Purpose: defines Torus, Type <160> Form Number <0>
        --          in package IGESSolid
        --          A Torus is a solid formed by revolving a circular disc
        --          about a specified coplanar axis.

uses

        Pnt             from gp,
        Dir             from gp,
        XYZ             from gp

is

        Create returns mutable Torus;

        -- Specific Methods pertaining to the class

        Init (me        : mutable;
              R1        : Real;
              R2        : Real;
              aPoint    : XYZ;
              anAxisdir : XYZ);
        ---Purpose : This method is used to set the fields of the class Torus
        --       - R1     : distance from center of torus to center
        --                  of circular disc to be revolved
        --       - R2     : radius of circular disc
        --       - aPoint : center point coordinates (default (0,0,0))
        --       - anAxis : unit vector in axis direction (default (0,0,1))

        MajorRadius (me) returns Real;
        ---Purpose : returns the distance from the center of torus to the center of
        -- the disc to be revolved

        DiscRadius (me) returns Real;
        ---Purpose : returns the radius of the disc to be revolved

        AxisPoint (me) returns Pnt;
        ---Purpose : returns the center of torus

        TransformedAxisPoint (me) returns Pnt;
        ---Purpose : returns the center of torus after applying TransformationMatrix

        Axis (me) returns Dir;
        ---Purpose : returns direction of the axis

        TransformedAxis (me) returns Dir;
        ---Purpose : returns direction of the axis after applying TransformationMatrix

fields

--
-- Class    : IGESSolid_Torus
--
-- Purpose  : Declaration of variables specific to the definition
--            of the Class Torus.
--
-- Reminder : A Torus instance is defined by :
--            the distance from the axis to the center of the disc(R1),
--            the radius of the disc(R2), the center of the torus(X1,Y1,Z1)
--            and the direction of the axis(I1,J1,K1)
--

        theR1    : Real;
            -- the distance from the axis to the center of the disc

        theR2    : Real;
            -- the radius of the disc

        thePoint : XYZ;
            -- the center of the torus

        theAxis  : XYZ;
            -- the direction of the axis

end Torus;