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8ff2e494f5
BRepGProp_Face::Load() has been protected against crash in case of edges without p-curves.
182 lines
6.2 KiB
C++
182 lines
6.2 KiB
C++
// Created on: 1993-04-14
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// Created by: Isabelle GRIGNON
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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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#ifndef _BRepGProp_Face_HeaderFile
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#define _BRepGProp_Face_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 <BRepAdaptor_Surface.hxx>
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#include <Geom2dAdaptor_Curve.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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#include <gp_Pnt2d.hxx>
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#include <Standard_Real.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <GeomAbs_IsoType.hxx>
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#include <TColStd_HArray1OfReal.hxx>
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class TopoDS_Face;
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class gp_Pnt;
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class gp_Vec;
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class TopoDS_Edge;
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class gp_Pnt2d;
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class gp_Vec2d;
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class BRepGProp_Face
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Constructor. Initializes the object with a flag IsUseSpan
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//! that says if it is necessary to define spans on a face.
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//! This option has an effect only for BSpline faces. Spans
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//! are returned by the methods GetUKnots and GetTKnots.
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BRepGProp_Face(const Standard_Boolean IsUseSpan = Standard_False);
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//! Constructor. Initializes the object with the face and the
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//! flag IsUseSpan that says if it is necessary to define
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//! spans on a face. This option has an effect only for
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//! BSpline faces. Spans are returned by the methods GetUKnots
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//! and GetTKnots.
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BRepGProp_Face(const TopoDS_Face& F, const Standard_Boolean IsUseSpan = Standard_False);
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Standard_EXPORT void Load (const TopoDS_Face& F);
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Standard_EXPORT Standard_Integer VIntegrationOrder() const;
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//! Returns Standard_True if the face is not trimmed.
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Standard_Boolean NaturalRestriction() const;
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//! Returns the TopoDS face.
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const TopoDS_Face& GetFace() const;
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//! Returns the value of the boundary curve of the face.
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gp_Pnt2d Value2d (const Standard_Real U) const;
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Standard_EXPORT Standard_Integer SIntOrder (const Standard_Real Eps) const;
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Standard_EXPORT Standard_Integer SVIntSubs() const;
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Standard_EXPORT Standard_Integer SUIntSubs() const;
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Standard_EXPORT void UKnots (TColStd_Array1OfReal& Knots) const;
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Standard_EXPORT void VKnots (TColStd_Array1OfReal& Knots) const;
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Standard_EXPORT Standard_Integer LIntOrder (const Standard_Real Eps) const;
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Standard_EXPORT Standard_Integer LIntSubs() const;
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Standard_EXPORT void LKnots (TColStd_Array1OfReal& Knots) const;
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//! Returns the number of points required to do the
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//! integration in the U parametric direction with
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//! a good accuracy.
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Standard_EXPORT Standard_Integer UIntegrationOrder() const;
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//! Returns the parametric bounds of the Face.
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Standard_EXPORT void Bounds (Standard_Real& U1, Standard_Real& U2, Standard_Real& V1, Standard_Real& V2) const;
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//! Computes the point of parameter U, V on the Face <S> and
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//! the normal to the face at this point.
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Standard_EXPORT void Normal (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& VNor) const;
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//! Loading the boundary arc.
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//! Returns FALSE if edge has no P-Curve.
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Standard_EXPORT bool Load (const TopoDS_Edge& E);
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//! Returns the parametric value of the start point of
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//! the current arc of curve.
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Standard_Real FirstParameter() const;
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//! Returns the parametric value of the end point of
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//! the current arc of curve.
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Standard_Real LastParameter() const;
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//! Returns the number of points required to do the
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//! integration along the parameter of curve.
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Standard_EXPORT Standard_Integer IntegrationOrder() const;
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//! Returns the point of parameter U and the first derivative
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//! at this point of a boundary curve.
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void D12d (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1) const;
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//! Loading the boundary arc. This arc is either a top, bottom,
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//! left or right bound of a UV rectangle in which the
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//! parameters of surface are defined.
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//! If IsFirstParam is equal to Standard_True, the face is
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//! initialized by either left of bottom bound. Otherwise it is
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//! initialized by the top or right one.
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//! If theIsoType is equal to GeomAbs_IsoU, the face is
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//! initialized with either left or right bound. Otherwise -
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//! with either top or bottom one.
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Standard_EXPORT void Load (const Standard_Boolean IsFirstParam, const GeomAbs_IsoType theIsoType);
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//! Returns an array of U knots of the face. The first and last
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//! elements of the array will be theUMin and theUMax. The
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//! middle elements will be the U Knots of the face greater
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//! then theUMin and lower then theUMax in increasing order.
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//! If the face is not a BSpline, the array initialized with
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//! theUMin and theUMax only.
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Standard_EXPORT void GetUKnots (const Standard_Real theUMin, const Standard_Real theUMax, Handle(TColStd_HArray1OfReal)& theUKnots) const;
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//! Returns an array of combination of T knots of the arc and
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//! V knots of the face. The first and last elements of the
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//! array will be theTMin and theTMax. The middle elements will
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//! be the Knots of the arc and the values of parameters of
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//! arc on which the value points have V coordinates close to V
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//! knots of face. All the parameter will be greater then
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//! theTMin and lower then theTMax in increasing order.
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//! If the face is not a BSpline, the array initialized with
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//! theTMin and theTMax only.
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Standard_EXPORT void GetTKnots (const Standard_Real theTMin, const Standard_Real theTMax, Handle(TColStd_HArray1OfReal)& theTKnots) const;
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protected:
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private:
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BRepAdaptor_Surface mySurface;
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Geom2dAdaptor_Curve myCurve;
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Standard_Boolean mySReverse;
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Standard_Boolean myIsUseSpan;
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};
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#include <BRepGProp_Face.lxx>
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#endif // _BRepGProp_Face_HeaderFile
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