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76 lines
2.9 KiB
Plaintext
Executable File
76 lines
2.9 KiB
Plaintext
Executable File
-- Created on: 1994-09-06
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-- Created by: Yves FRICAUD
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-- Copyright (c) 1994-1999 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 CurAndInf2d from Geom2dLProp inherits CurAndInf from LProp
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---Purpose: An algorithm for computing local properties of a curve.
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-- These properties include:
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-- - the maximum and minimum curvatures
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-- - the inflection points.
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-- A CurAndInf2d object provides the framework for:
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-- - defining the curve to be analyzed
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-- - implementing the computation algorithms
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-- - consulting the results.
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uses
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Curve from Geom2d
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is
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Create;
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--- Purpose: Initializes the framework.
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-- Note: The curve on which the local properties are
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-- computed is defined using one of the following
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-- functions: Perform, PerformCurExt or PerformInf.
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Perform (me : in out; C : Curve)
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---Purpose: For the curve C, Computes both the
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-- inflection points and the maximum and minimum curvatures.
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is static;
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PerformCurExt (me : in out; C : Curve)
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---Purpose: For the curve C, Computes the locals extremas of curvature.
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is static;
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PerformInf (me : in out; C : Curve)
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---Purpose: For the curve C, Computes the inflections.
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-- After computation, the following functions can be used:
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-- - IsDone to check if the computation was successful
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-- - NbPoints to obtain the number of computed particular points
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-- - Parameter to obtain the parameter on the curve for
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-- each particular point
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-- - Type to check if the point is an inflection point or an
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-- extremum of curvature of the curve C.
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-- Warning
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-- These functions can be used to analyze a series of
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-- curves, however it is necessary to clear the table of
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-- results between each computation.
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is static;
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IsDone (me) returns Boolean
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---Purpose: True if the solutions are found.
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is static;
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fields
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isDone : Boolean from Standard;
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end CurAndInf2d;
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