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f4dee9bb20
Added DRAW command dsetsignal, resetting OSD signal handler with either armed or disabled FPE handler, according to an option. If called without arguments, it sets FPE handler only if environment variable OSD_FPE is defined (with value different from 0). On start, DRAW calls dsetsignal to set FPE signal if CSF_FPE is defined. Test bugs fclasses bug6143 uses dsetsignal to set FPE handler unconditionally before the test command, and resets it to default at the end. A number of changes in the code have been done in order to fix floating point exceptions that became generated after enabling signals: - Global functions Sinh() and Cosh() defined in Standard_Real.hxx are improved to raise Standard_NumericError exception if argument is too big (greater than 710.47586), instead of relying on system treatment of floating point overflow. These functions are used instead of sinh and cosh in ElCLib.cxx. - Maximal value of parameter on hyperbola is restricted by 23 (corresponding to ~1e10 in 3d) in order to avoid FP overflow in Extrema_GenExtCS.cxx, ShapeFix_EdgeProjAux.cxx. - Interface of the root curve adaptor class Adaptor3d_Curve has been updated to add new virtual methods BasisCurve and OffsetValue. They complement the adaptor for the case of offset curves. These methods are used in Extrema_GenExtCS.cxx to restrict domain search in the case of offset of hyperbola, in order to get rid of floating point overflow. All classes inheriting Adaptor3d_Curve have been changed to implement the new virtual methods. - Protection against division by zero has been implemented in ApproxInt_KnotTools.cxx, BRepClass3d_SClassifier.cxx, BRepGProp_Face.cxx, BRepMesh_FastDiscretFace.cxx, Geom2dGcc_Circ2d2TanOnIter.cxx, Geom2dInt_Geom2dCurveTool.cxx, IntPolyh_MaillageAffinage.cxx. - Protection against calling of math functions of infinite arguments has been added in BRepCheck_Edge.cxx, BRepLib.cxx, CSLib_NormalPolyDef.cxx, Extrema_FuncExtPC.gxx, Extrema_GExtPC.gxx, Extrema_GLocateExtPC.gxx, Intf_InterferencePolygonPolyhedron.gxx, ShapeAnalysis_Surface.cxx, ShapeAnalysis_TransferParametersProj.cxx, ShapeAnalysis_Wire.cxx, math_FunctionSetRoot.cxx. - Proper initialization of local variables is done in BOPAlgo_PaveFiller_6.cxx, XSDRAWSTLVRML.cxx. - Inconsistent usage of Standard_Boolean* to access integer data in HLR (caused by #27772) is corrected Some test cases have been updated to actual state.
256 lines
8.9 KiB
C++
256 lines
8.9 KiB
C++
// Created on: 1992-09-01
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// Created by: Modelistation
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// Copyright (c) 1992-1999 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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#ifndef _GeomAdaptor_Curve_HeaderFile
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#define _GeomAdaptor_Curve_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <GeomAbs_CurveType.hxx>
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#include <Standard_Real.hxx>
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#include <BSplCLib_Cache.hxx>
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#include <Adaptor3d_Curve.hxx>
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#include <GeomAbs_Shape.hxx>
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#include <Standard_Integer.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <Standard_Boolean.hxx>
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#include <GeomEvaluator_Curve.hxx>
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class Geom_Curve;
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class Adaptor3d_HCurve;
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class Standard_NoSuchObject;
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class Standard_ConstructionError;
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class Standard_OutOfRange;
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class Standard_DomainError;
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class GeomAdaptor_Surface;
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class gp_Pnt;
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class gp_Vec;
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class gp_Lin;
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class gp_Circ;
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class gp_Elips;
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class gp_Hypr;
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class gp_Parab;
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class Geom_BezierCurve;
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class Geom_BSplineCurve;
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class Geom_OffsetCurve;
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//! This class provides an interface between the services provided by any
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//! curve from the package Geom and those required of the curve by algorithms which use it.
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//! Creation of the loaded curve the curve is C1 by piece.
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//!
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//! Polynomial coefficients of BSpline curves used for their evaluation are
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//! cached for better performance. Therefore these evaluations are not
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//! thread-safe and parallel evaluations need to be prevented.
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class GeomAdaptor_Curve : public Adaptor3d_Curve
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{
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public:
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DEFINE_STANDARD_ALLOC
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GeomAdaptor_Curve();
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GeomAdaptor_Curve(const Handle(Geom_Curve)& C);
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//! ConstructionError is raised if Ufirst>Ulast
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GeomAdaptor_Curve(const Handle(Geom_Curve)& C, const Standard_Real UFirst, const Standard_Real ULast);
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void Load (const Handle(Geom_Curve)& C);
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//! ConstructionError is raised if Ufirst>Ulast
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void Load (const Handle(Geom_Curve)& C, const Standard_Real UFirst, const Standard_Real ULast);
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//! Provides a curve inherited from Hcurve from Adaptor.
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//! This is inherited to provide easy to use constructors.
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const Handle(Geom_Curve)& Curve() const;
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Standard_Real FirstParameter() const Standard_OVERRIDE;
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Standard_Real LastParameter() const Standard_OVERRIDE;
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Standard_EXPORT GeomAbs_Shape Continuity() const Standard_OVERRIDE;
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//! Returns the number of intervals for continuity
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//! <S>. May be one if Continuity(me) >= <S>
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Standard_EXPORT Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
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//! Stores in <T> the parameters bounding the intervals
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//! of continuity <S>.
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//!
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//! The array must provide enough room to accomodate
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//! for the parameters. i.e. T.Length() > NbIntervals()
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Standard_EXPORT void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
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//! Returns a curve equivalent of <me> between
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//! parameters <First> and <Last>. <Tol> is used to
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//! test for 3d points confusion.
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//! If <First> >= <Last>
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Standard_EXPORT Handle(Adaptor3d_HCurve) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsClosed() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Real Period() const Standard_OVERRIDE;
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//! Computes the point of parameter U on the curve
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Standard_EXPORT gp_Pnt Value (const Standard_Real U) const Standard_OVERRIDE;
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//! Computes the point of parameter U.
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Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt& P) const Standard_OVERRIDE;
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//! Computes the point of parameter U on the curve
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//! with its first derivative.
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//!
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//! Warning : On the specific case of BSplineCurve:
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//! if the curve is cut in interval of continuity at least C1, the
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//! derivatives are computed on the current interval.
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//! else the derivatives are computed on the basis curve.
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Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& V) const Standard_OVERRIDE;
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//! Returns the point P of parameter U, the first and second
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//! derivatives V1 and V2.
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//!
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//! Warning : On the specific case of BSplineCurve:
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//! if the curve is cut in interval of continuity at least C2, the
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//! derivatives are computed on the current interval.
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//! else the derivatives are computed on the basis curve.
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Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2) const Standard_OVERRIDE;
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//! Returns the point P of parameter U, the first, the second
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//! and the third derivative.
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//!
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//! Warning : On the specific case of BSplineCurve:
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//! if the curve is cut in interval of continuity at least C3, the
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//! derivatives are computed on the current interval.
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//! else the derivatives are computed on the basis curve.
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Standard_EXPORT void D3 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3) const Standard_OVERRIDE;
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//! The returned vector gives the value of the derivative for the
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//! order of derivation N.
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//! Warning : On the specific case of BSplineCurve:
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//! if the curve is cut in interval of continuity CN, the
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//! derivatives are computed on the current interval.
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//! else the derivatives are computed on the basis curve.
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//! Raised if N < 1.
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Standard_EXPORT gp_Vec DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE;
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//! returns the parametric resolution
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Standard_EXPORT Standard_Real Resolution (const Standard_Real R3d) const Standard_OVERRIDE;
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GeomAbs_CurveType GetType() const Standard_OVERRIDE;
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Standard_EXPORT gp_Lin Line() const Standard_OVERRIDE;
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Standard_EXPORT gp_Circ Circle() const Standard_OVERRIDE;
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Standard_EXPORT gp_Elips Ellipse() const Standard_OVERRIDE;
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Standard_EXPORT gp_Hypr Hyperbola() const Standard_OVERRIDE;
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Standard_EXPORT gp_Parab Parabola() const Standard_OVERRIDE;
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//! this should NEVER make a copy
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//! of the underlying curve to read
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//! the relevant information
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Standard_EXPORT Standard_Integer Degree() const Standard_OVERRIDE;
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//! this should NEVER make a copy
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//! of the underlying curve to read
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//! the relevant information
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Standard_EXPORT Standard_Boolean IsRational() const Standard_OVERRIDE;
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//! this should NEVER make a copy
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//! of the underlying curve to read
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//! the relevant information
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Standard_EXPORT Standard_Integer NbPoles() const Standard_OVERRIDE;
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//! this should NEVER make a copy
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//! of the underlying curve to read
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//! the relevant information
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Standard_EXPORT Standard_Integer NbKnots() const Standard_OVERRIDE;
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//! this will NOT make a copy of the
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//! Bezier Curve : If you want to modify
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//! the Curve please make a copy yourself
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//! Also it will NOT trim the surface to
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//! myFirst/Last.
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Standard_EXPORT Handle(Geom_BezierCurve) Bezier() const Standard_OVERRIDE;
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//! this will NOT make a copy of the
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//! BSpline Curve : If you want to modify
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//! the Curve please make a copy yourself
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//! Also it will NOT trim the surface to
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//! myFirst/Last.
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Standard_EXPORT Handle(Geom_BSplineCurve) BSpline() const Standard_OVERRIDE;
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Standard_EXPORT Handle(Geom_OffsetCurve) OffsetCurve() const Standard_OVERRIDE;
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friend class GeomAdaptor_Surface;
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protected:
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private:
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Standard_EXPORT GeomAbs_Shape LocalContinuity (const Standard_Real U1, const Standard_Real U2) const;
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Standard_EXPORT void load (const Handle(Geom_Curve)& C, const Standard_Real UFirst, const Standard_Real ULast);
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//! Check theU relates to start or finish point of B-spline curve and return indices of span the point is located
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Standard_Boolean IsBoundary(const Standard_Real theU, Standard_Integer& theSpanStart, Standard_Integer& theSpanFinish) const;
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//! Rebuilds B-spline cache
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//! \param theParameter the value on the knot axis which identifies the caching span
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void RebuildCache (const Standard_Real theParameter) const;
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Handle(Geom_Curve) myCurve;
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GeomAbs_CurveType myTypeCurve;
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Standard_Real myFirst;
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Standard_Real myLast;
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Handle(Geom_BSplineCurve) myBSplineCurve; ///< B-spline representation to prevent castings
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mutable Handle(BSplCLib_Cache) myCurveCache; ///< Cached data for B-spline or Bezier curve
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Handle(GeomEvaluator_Curve) myNestedEvaluator; ///< Calculates value of offset curve
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};
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#include <GeomAdaptor_Curve.lxx>
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#endif // _GeomAdaptor_Curve_HeaderFile
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