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103 lines
3.6 KiB
Plaintext
Executable File
103 lines
3.6 KiB
Plaintext
Executable File
-- Created on: 1992-10-13
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-- Created by: Laurent BUCHARD
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-- Copyright (c) 1992-1999 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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generic class ProjPCurGen from IntCurve (
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TheCurve as any;
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TheCurveTool as any) -- as CurveTool from IntCurve(TheCurve)
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---Purpose: this class provide a tool which computes the parameter
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-- of a point near a parametric curve.
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---Level: Internal
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uses Pnt2d from gp,
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Vec2d from gp,
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POnCurv2d from Extrema
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class TheCurveLocator instantiates CurveLocator from Extrema (
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TheCurve,
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TheCurveTool,
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TheCurve,
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TheCurveTool,
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POnCurv2d from Extrema,
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Pnt2d from gp);
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class TheLocateExtPC instantiates GenLocateExtPC from Extrema (
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TheCurve,
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TheCurveTool,
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POnCurv2d from Extrema,
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Pnt2d from gp,
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Vec2d from gp);
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is
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FindParameter(myclass; C: TheCurve;
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Pnt: Pnt2d from gp;
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Tol: Real from Standard)
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--- Purpose: Returns the parameter V of the point on the
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-- parametric curve corresponding to the Point Pnt.
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-- The Correspondance between Pnt and the point P(V)
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-- on the parametric curve must be coherent with the
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-- way of determination of the signed distance
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-- between a point and the implicit curve.
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-- Tol is the tolerance on the distance between a point
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-- and the parametrised curve.
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-- In that case, no bounds are given. The research of
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-- the rigth parameter has to be made on the natural
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-- parametric domain of the curve.
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returns Real from Standard;
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FindParameter(myclass; C: TheCurve;
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Pnt: Pnt2d from gp;
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LowParameter,HighParameter,Tol: Real from Standard)
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--- Purpose: Returns the parameter V of the point on the
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-- parametric curve corresponding to the Point Pnt.
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-- The Correspondance between Pnt and the point P(V)
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-- on the parametric curve must be coherent with the
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-- way of determination of the signed distance
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-- between a point and the implicit curve.
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-- Tol is the tolerance on the distance between a point
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-- and the parametrised curve.
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-- LowParameter and HighParameter give the
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-- boundaries of the interval in wich the parameter
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-- certainly lies. These parameters are given to
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-- implement a more efficient algoritm. So, it is not
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-- necessary to check that the returned value verifies
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-- LowParameter <= Value <= HighParameter.
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returns Real from Standard;
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end ProjPCurGen;
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