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-- File: TorusToBSplineSurface.cdl
-- Created: Thu Oct 10 15:57:19 1991
-- Author: Jean Claude VAUTHIER
---Copyright: Matra Datavision 1991, 1992
class TorusToBSplineSurface from Convert
--- Purpose :
-- This algorithm converts a bounded Torus into a rational
-- B-spline surface. The torus is a Torus from package gp.
-- The parametrization of the torus is :
-- P (U, V) =
-- Loc + MinorRadius * Sin(V) * Zdir +
-- (MajorRadius+MinorRadius*Cos(V)) * (Cos(U)*Xdir + Sin(U)*Ydir)
-- where Loc is the center of the torus, Xdir, Ydir and Zdir are the
-- normalized directions of the local cartesian coordinate system of
-- the Torus. The parametrization range is U [0, 2PI], V [0, 2PI].
--- KeyWords :
-- Convert, Torus, BSplineSurface.
inherits ElementarySurfaceToBSplineSurface
uses Torus from gp
raises DomainError from Standard
is
Create (T : Torus; U1, U2, V1, V2 : Real) returns TorusToBSplineSurface
--- Purpose :
-- The equivalent B-spline surface as the same orientation as the
-- torus in the U and V parametric directions.
raises DomainError;
--- Purpose :
-- Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
-- Raised if V1 = V2 or V1 = V2 + 2.0 * Pi
Create (T : Torus;
Param1, Param2 : Real;
UTrim : Boolean = Standard_True)
returns TorusToBSplineSurface
--- Purpose :
-- The equivalent B-spline surface as the same orientation as the
-- torus in the U and V parametric directions.
raises DomainError;
--- Purpose :
-- Raised if Param1 = Param2 or Param1 = Param2 + 2.0 * Pi
Create (T : Torus) returns TorusToBSplineSurface;
--- Purpose :
-- The equivalent B-spline surface as the same orientation as the
-- torus in the U and V parametric directions.
end TorusToBSplineSurface;
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