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85 lines
2.9 KiB
Plaintext
Executable File
85 lines
2.9 KiB
Plaintext
Executable File
-- Created on: 1991-10-10
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-- Created by: Jean Claude VAUTHIER
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-- Copyright (c) 1991-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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class SphereToBSplineSurface from Convert
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--- Purpose :
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-- This algorithm converts a bounded Sphere into a rational
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-- B-spline surface. The sphere is a Sphere from package gp.
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-- The parametrization of the sphere is
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-- P (U, V) = Loc + Radius * Sin(V) * Zdir +
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-- Radius * Cos(V) * (Cos(U)*Xdir + Sin(U)*Ydir)
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-- where Loc is the center of the sphere Xdir, Ydir and Zdir are the
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-- normalized directions of the local cartesian coordinate system of
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-- the sphere. The parametrization range is U [0, 2PI] and
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-- V [-PI/2, PI/2].
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--- KeyWords :
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-- Convert, Sphere, BSplineSurface.
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inherits ElementarySurfaceToBSplineSurface
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uses Sphere from gp
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raises DomainError from Standard
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is
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Create (Sph : Sphere; U1, U2, V1, V2 : Real) returns SphereToBSplineSurface
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--- Purpose :
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-- The equivalent B-spline surface as the same orientation as the
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-- sphere in the U and V parametric directions.
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raises DomainError;
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--- Purpose :
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-- Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
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-- Raised if V1 = V2.
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Create (Sph : Sphere;
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Param1, Param2 : Real;
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UTrim : Boolean = Standard_True)
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returns SphereToBSplineSurface
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--- Purpose :
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-- The equivalent B-spline surface as the same orientation
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-- as the sphere in the U and V parametric directions.
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raises DomainError;
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--- Purpose :
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-- Raised if UTrim = True and Param1 = Param2 or
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-- Param1 = Param2 + 2.0 * Pi
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-- Raised if UTrim = False and Param1 = Param2
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Create (Sph : Sphere) returns SphereToBSplineSurface;
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--- Purpose :
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-- The equivalent B-spline surface as the same orientation
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-- as the sphere in the U and V parametric directions.
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end SphereToBSplineSurface;
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