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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.
125 lines
3.8 KiB
Plaintext
125 lines
3.8 KiB
Plaintext
-- Created on: 1991-07-24
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-- Created by: Michel CHAUVAT
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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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private generic class FuncExtPC from Extrema
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(Curve as any;
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Tool as any;
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POnC as any;
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Pnt as any;
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Vec as any)
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inherits FunctionWithDerivative from math
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--- Purpose: Function to find extrema of the distance between a
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--- point and a curve.
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uses SequenceOfReal from TColStd,
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SequenceOfInteger from TColStd
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raises OutOfRange from Standard,
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TypeMismatch from Standard
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private class SeqPC instantiates Sequence from TCollection(POnC);
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is
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Create returns FuncExtPC;
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Create (P: Pnt; C: Curve) returns FuncExtPC;
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---Purpose:
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Initialize(me: in out; C: Curve)
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---Purpose: sets the field mycurve of the function.
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is static;
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SetPoint(me: in out; P: Pnt)
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---Purpose: sets the field P of the function.
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is static;
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-- In all next methods, an exception is raised if the fields
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-- were not initialized.
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Value (me: in out; U: Real; F: out Real) returns Boolean;
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---Purpose: Calculation of F(U).
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Derivative (me: in out; U: Real; DF: out Real) returns Boolean;
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---Purpose: Calculation of F'(U).
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Values (me: in out; U: Real; F,DF: out Real) returns Boolean;
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---Purpose: Calculation of F(U) and F'(U).
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GetStateNumber (me: in out) returns Integer
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---Purpose: Save the found extremum.
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is redefined;
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NbExt (me) returns Integer
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---Purpose: Return the nunber of found extrema.
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raises TypeMismatch from Standard;
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SquareDistance (me; N: Integer) returns Real
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---Purpose: Returns the Nth distance.
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raises OutOfRange from Standard,
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TypeMismatch from Standard;
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-- if N < 1 or N > NbExt(me).
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IsMin (me; N: Integer) returns Boolean
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---Purpose: Shows if the Nth distance is a minimum.
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raises OutOfRange from Standard,
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TypeMismatch from Standard;
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-- if N < 1 or N > NbExt(me).
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Point (me; N: Integer) returns POnC
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---C++: return const &
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---Purpose: Returns the Nth extremum.
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raises OutOfRange from Standard,
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TypeMismatch from Standard;
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-- if N < 1 or N > NbExt(me).
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SubIntervalInitialize(me: in out; theUfirst, theUlast: Real from Standard);
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---Purpose: Determines boundaries of subinterval for find of root.
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SearchOfTolerance(me: in out) returns Real from Standard;
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---Purpose: Computes a Tol value. If 1st derivative of curve
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-- |D1|<Tol, it is considered D1=0.
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fields
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myP : Pnt;
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myC : Address from Standard;
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myU : Real; -- current
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myPc : Pnt; -- current point
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myD1f : Real; -- value of derivative of the function
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mySqDist: SequenceOfReal from TColStd;
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myIsMin: SequenceOfInteger from TColStd;
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myPoint: SeqPC;
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myPinit: Boolean;
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myCinit: Boolean;
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myD1Init: Boolean;
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myTol: Real from Standard; -- toolerance for derivate
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--Supremum of search 1st non-zero derivative
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myMaxDerivOrder: Integer from Standard;
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--boundaries of subinterval for find of root
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myUinfium, myUsupremum: Real from Standard;
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end FuncExtPC;
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