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88 lines
2.9 KiB
Plaintext
Executable File
88 lines
2.9 KiB
Plaintext
Executable File
-- Created on: 1997-05-13
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-- Created by: Stagiaire Francois DUMONT
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-- Copyright (c) 1997-1999 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 DenominatorMultiplier from GeomLib
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---Purpose: this class is used to construct the BSpline curve
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-- from an Approximation ( ApproxAFunction from AdvApprox).
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uses
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BSplineSurface from Geom,
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Array1OfReal from TColStd
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raises
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OutOfRange from Standard,
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ConstructionError from Standard
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is
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Create( Surface : BSplineSurface from Geom ;
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KnotVector : Array1OfReal from TColStd)
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returns DenominatorMultiplier from GeomLib
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raises
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ConstructionError from Standard;
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---Purpose: if the surface is rational this will define the evaluator
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-- of a real function of 2 variables a(u,v) such that
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-- if we define a new surface by :
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-- a(u,v) * N(u,v)
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-- NewF(u,v) = ----------------
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-- a(u,v) * D(u,v)
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Value(me; UParameter : in Real from Standard ;
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VParameter : in Real from Standard)
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returns Real from Standard
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raises
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OutOfRange from Standard
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---Purpose: Returns the value of
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-- a(UParameter,VParameter)=
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--
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-- H0(UParameter)/Denominator(Umin,Vparameter)
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--
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-- D Denominator(Umin,Vparameter)
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-- - ------------------------------[H1(u)]/(Denominator(Umin,Vparameter)^2)
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-- D U
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--
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-- + H3(UParameter)/Denominator(Umax,Vparameter)
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--
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-- D Denominator(Umax,Vparameter)
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-- - ------------------------------[H2(u)]/(Denominator(Umax,Vparameter)^2)
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-- D U
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is static;
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fields
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mySurface : BSplineSurface from Geom ;
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myKnotFlatVector : Array1OfReal from TColStd ;
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end MakeCurvefromApprox;
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