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License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
-- 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) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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class CircleToBSplineCurve from Convert inherits ConicToBSplineCurve
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--- Purpose :
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-- This algorithm converts a circle into a rational B-spline curve.
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-- The circle is a Circ2d from package gp and its parametrization is :
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-- P (U) = Loc + R * (Cos(U) * Xdir + Sin(U) * YDir) where Loc is the
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-- center of the circle Xdir and Ydir are the normalized directions
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-- of the local cartesian coordinate system of the circle.
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-- The parametrization range for the circle is U [0, 2Pi].
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--
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--- Warnings :
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-- The parametrization range for the B-spline curve is not [0, 2Pi].
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--
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--- KeyWords :
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-- Convert, Circle, BSplineCurve, 2D .
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uses Circ2d from gp,
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ParameterisationType from Convert
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raises DomainError from Standard
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is
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Create (C : Circ2d;
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Parameterisation : ParameterisationType from Convert
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= Convert_TgtThetaOver2)
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returns CircleToBSplineCurve;
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--- Purpose :
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-- The equivalent B-spline curve has the same orientation
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-- as the circle C.
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Create (C : Circ2d; U1, U2 : Real ;
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Parameterisation : ParameterisationType from Convert
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= Convert_TgtThetaOver2)
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returns CircleToBSplineCurve
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--- Purpose :
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-- The circle C is limited between the parametric values U1, U2
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-- in radians. U1 and U2 [0.0, 2*Pi] .
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-- The equivalent B-spline curve is oriented from U1 to U2 and has
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-- the same orientation as the circle C.
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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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end CircleToBSplineCurve;
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