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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.
139 lines
4.4 KiB
Plaintext
139 lines
4.4 KiB
Plaintext
-- Created on: 1993-12-14
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-- Created by: Christophe MARION
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-- Copyright (c) 1993-1999 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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generic class GLocateExtPC from Extrema(
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TheCurve as any;
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TheCurveTool as any;
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TheExtPElC as any;
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ThePoint as any;
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TheVector as any;
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ThePOnC as any;
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TheSequenceOfPOnC as any)
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---Purpose: It calculates the distance between a point and a
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-- curve with a close point.
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-- This distance can be a minimum or a maximum.
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uses CurveType from GeomAbs
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raises DomainError from Standard,
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NotDone from StdFail
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class ELPC instantiates GExtPC from Extrema
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(TheCurve,
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TheCurveTool,
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TheExtPElC,
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ThePoint,
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TheVector,
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ThePOnC,
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TheSequenceOfPOnC);
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class LocEPC instantiates GenLocateExtPC from Extrema
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(TheCurve,
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TheCurveTool,
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ThePOnC,
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ThePoint,
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TheVector);
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is
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Create returns GLocateExtPC;
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Create (P: ThePoint; C: TheCurve; U0: Real; TolF: Real)
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returns GLocateExtPC
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---Purpose: Calculates the distance with a close point.
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-- The close point is defined by the parameter value
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-- U0.
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-- The function F(u)=distance(P,C(u)) has an extremum
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-- when g(u)=dF/du=0. The algorithm searchs a zero
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-- near the close point.
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-- TolF is used to decide to stop the iterations.
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-- At the nth iteration, the criteria is:
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-- abs(Un - Un-1) < TolF.
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raises DomainError;
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-- if U0 is outside the definition range of the curve.
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Create (P: ThePoint; C: TheCurve; U0: Real; Umin, Usup: Real; TolF: Real)
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returns GLocateExtPC
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---Purpose: Calculates the distance with a close point.
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-- The close point is defined by the parameter value
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-- U0.
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-- The function F(u)=distance(P,C(u)) has an extremum
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-- when g(u)=dF/du=0. The algorithm searchs a zero
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-- near the close point.
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-- Zeros are searched between Umin et Usup.
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-- TolF is used to decide to stop the iterations.
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-- At the nth iteration, the criteria is:
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-- abs(Un - Un-1) < TolF.
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raises DomainError;
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-- if U0 is outside the definition range of the curve.
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Initialize(me: in out; C: TheCurve; Umin, Usup: Real; TolF: Real)
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---Purpose: sets the fields of the algorithm.
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is static;
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Perform(me: in out; P: ThePoint; U0: Real)
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---Purpose:
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is static;
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IsDone (me) returns Boolean
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---Purpose: Returns True if the distance is found.
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is static;
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SquareDistance (me) returns Real
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---Purpose: Returns the value of the extremum square distance.
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raises NotDone from StdFail
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-- if IsDone(me)=False.
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is static;
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IsMin (me) returns Boolean
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---Purpose: Returns True if the extremum distance is a minimum.
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raises NotDone from StdFail
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-- if IsDone(me)=False.
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is static;
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Point (me) returns ThePOnC
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---C++: return const &
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---Purpose: Returns the point of the extremum distance.
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raises NotDone from StdFail
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-- if IsDone(me)=False.
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is static;
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fields
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mypp: ThePOnC;
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myC: Address from Standard;
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mydist2: Real from Standard;
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myismin: Boolean from Standard;
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myDone : Boolean from Standard;
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myumin: Real from Standard;
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myusup: Real from Standard;
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mytol: Real from Standard;
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myLocExtPC: LocEPC from Extrema;
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myExtremPC: ELPC from Extrema;
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type: CurveType from GeomAbs;
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numberext: Integer from Standard;
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end GLocateExtPC;
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