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1d54b80764
Two new functionalities have been added in BRepFilletAPI_MakeChamfer: - constant throat (the section of chamfer is isosceles triangle, its height is constant in all sections - this is the "throat" of the weld); - constant throat with penetration(the section of chamfer is right-angled triangle, the first of two surfaces (where is the top of the chamfer) is virtually moved inside the solid by offset operation, the apex of the section is on the intersection curve between moved surface and second surface, right angle is at the top of the chamfer, the length of the leg from apex to top is constant - this is the "throat" of the weld). - New abstract classes BlendFunc_GenChamfer and BlendFunc_GenChamfInv have been added; - Class BlendFunc_Chamfer is now descended from BlendFunc_GenChamfer, class BlendFunc_ChamfInv is now descended from BlendFunc_GenChamfInv. - New class BlendFunc_ConstThroat is descended from BlendFunc_GenChamfer, new class BlendFund_ConstThroatInv is descended from BlendFunc_GenChamfInv. - New class BlendFunc_ConstThroatWithPenetration is descended from BlendFunc_GenChamfer, new class BlendFund_ConstThroatWithPenetrationInv is descended from BlendFunc_GenChamfInv. - Class ChFi3d_ChBuilder has now mode of chamfer that can be ClassicChamfer, ConstThroatChamfer and ConstThroatWithPenetrationChamfer. - Two new DRAW Test Harness commands "chamf_throat" ant "chamf_throat_with_penetration" have been added for the second mode of ChBuilder. - The interface of DRAW Test Harness command "chamf" changed for symmetric case.
357 lines
11 KiB
C++
357 lines
11 KiB
C++
// Created by: Julia GERASIMOVA
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// Copyright (c) 2015 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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#include <Adaptor3d_HCurve.hxx>
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#include <Adaptor3d_HSurface.hxx>
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#include <Blend_Point.hxx>
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#include <BlendFunc.hxx>
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#include <BlendFunc_Chamfer.hxx>
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#include <ElCLib.hxx>
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#include <gp_Lin.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Vec.hxx>
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#include <gp_Vec2d.hxx>
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#include <math_Matrix.hxx>
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#include <Precision.hxx>
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#include <Standard_NotImplemented.hxx>
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//=======================================================================
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//function : BlendFunc_GenChamfer
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//purpose :
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//=======================================================================
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BlendFunc_GenChamfer::BlendFunc_GenChamfer(const Handle(Adaptor3d_HSurface)& S1,
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const Handle(Adaptor3d_HSurface)& S2,
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const Handle(Adaptor3d_HCurve)& CG)
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: surf1(S1),surf2(S2),curv(CG),
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distmin(RealLast())
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{
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}
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//=======================================================================
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//function : NbEquations
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//purpose :
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//=======================================================================
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Standard_Integer BlendFunc_GenChamfer::NbEquations () const
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{
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return 4;
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}
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//=======================================================================
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//function : Set
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Set(const Standard_Real, const Standard_Real)
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{
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}
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//=======================================================================
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//function : GetTolerance
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::GetTolerance(math_Vector& Tolerance, const Standard_Real Tol) const
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{
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Tolerance(1) = surf1->UResolution(Tol);
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Tolerance(2) = surf1->VResolution(Tol);
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Tolerance(3) = surf2->UResolution(Tol);
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Tolerance(4) = surf2->VResolution(Tol);
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}
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//=======================================================================
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//function : GetBounds
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::GetBounds(math_Vector& InfBound, math_Vector& SupBound) const
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{
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InfBound(1) = surf1->FirstUParameter();
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InfBound(2) = surf1->FirstVParameter();
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InfBound(3) = surf2->FirstUParameter();
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InfBound(4) = surf2->FirstVParameter();
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SupBound(1) = surf1->LastUParameter();
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SupBound(2) = surf1->LastVParameter();
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SupBound(3) = surf2->LastUParameter();
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SupBound(4) = surf2->LastVParameter();
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for(Standard_Integer i = 1; i <= 4; i++){
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if(!Precision::IsInfinite(InfBound(i)) &&
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!Precision::IsInfinite(SupBound(i))) {
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const Standard_Real range = (SupBound(i) - InfBound(i));
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InfBound(i) -= range;
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SupBound(i) += range;
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}
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}
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}
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//=======================================================================
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//function : GetMinimalDistance
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//purpose :
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//=======================================================================
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Standard_Real BlendFunc_GenChamfer::GetMinimalDistance() const
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{
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return distmin;
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}
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//=======================================================================
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//function : Values
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//purpose :
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//=======================================================================
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Standard_Boolean BlendFunc_GenChamfer::Values(const math_Vector& X, math_Vector& F, math_Matrix& D)
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{
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Standard_Boolean val = Value(X,F);
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return (val && Derivatives(X,D));
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}
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//=======================================================================
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//function : Section
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Section(const Standard_Real /*Param*/,
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const Standard_Real U1,
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const Standard_Real V1,
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const Standard_Real U2,
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const Standard_Real V2,
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Standard_Real& Pdeb,
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Standard_Real& Pfin,
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gp_Lin& C)
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{
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const gp_Pnt pts1 = surf1->Value(U1,V1);
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const gp_Pnt pts2 = surf2->Value(U2,V2);
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const gp_Dir dir( gp_Vec(pts1,pts2) );
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C.SetLocation(pts1);
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C.SetDirection(dir);
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Pdeb = 0.;
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Pfin = ElCLib::Parameter(C,pts2);
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}
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//=======================================================================
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//function : IsRational
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//purpose :
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//=======================================================================
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Standard_Boolean BlendFunc_GenChamfer::IsRational() const
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{
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return Standard_False;
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}
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//=======================================================================
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//function : GetMinimalWeight
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::GetMinimalWeight(TColStd_Array1OfReal& Weights) const
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{
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Weights.Init(1);
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}
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//=======================================================================
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//function : NbIntervals
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//purpose :
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//=======================================================================
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Standard_Integer BlendFunc_GenChamfer::NbIntervals (const GeomAbs_Shape S) const
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{
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return curv->NbIntervals(BlendFunc::NextShape(S));
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}
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//=======================================================================
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//function : Intervals
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const
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{
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curv->Intervals(T, BlendFunc::NextShape(S));
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}
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//=======================================================================
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//function : GetShape
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::GetShape (Standard_Integer& NbPoles,
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Standard_Integer& NbKnots,
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Standard_Integer& Degree,
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Standard_Integer& NbPoles2d)
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{
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NbPoles = 2;
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NbPoles2d = 2;
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NbKnots = 2;
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Degree = 1;
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}
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//=======================================================================
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//function : GetTolerance
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//purpose : Determine les Tolerance a utiliser dans les approximations.
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//=======================================================================
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void BlendFunc_GenChamfer::GetTolerance(const Standard_Real BoundTol,
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const Standard_Real,
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const Standard_Real,
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math_Vector& Tol3d,
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math_Vector&) const
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{
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Tol3d.Init(BoundTol);
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}
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//=======================================================================
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//function : Knots
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Knots(TColStd_Array1OfReal& TKnots)
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{
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TKnots(1) = 0.;
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TKnots(2) = 1.;
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}
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//=======================================================================
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//function : Mults
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Mults(TColStd_Array1OfInteger& TMults)
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{
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TMults(1) = 2;
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TMults(2) = 2;
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}
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//=======================================================================
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//function : Section
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//purpose :
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//=======================================================================
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Standard_Boolean BlendFunc_GenChamfer::Section
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(const Blend_Point& /*P*/,
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TColgp_Array1OfPnt& /*Poles*/,
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TColgp_Array1OfVec& /*DPoles*/,
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TColgp_Array1OfVec& /*D2Poles*/,
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TColgp_Array1OfPnt2d& /*Poles2d*/,
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TColgp_Array1OfVec2d& /*DPoles2d*/,
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TColgp_Array1OfVec2d& /*D2Poles2d*/,
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TColStd_Array1OfReal& /*Weights*/,
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TColStd_Array1OfReal& /*DWeights*/,
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TColStd_Array1OfReal& /*D2Weights*/)
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{
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return Standard_False;
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}
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//=======================================================================
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//function : Section
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//purpose :
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//=======================================================================
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Standard_Boolean BlendFunc_GenChamfer::Section
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(const Blend_Point& P,
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TColgp_Array1OfPnt& Poles,
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TColgp_Array1OfVec& DPoles,
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TColgp_Array1OfPnt2d& Poles2d,
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TColgp_Array1OfVec2d& DPoles2d,
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TColStd_Array1OfReal& Weights,
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TColStd_Array1OfReal& DWeights)
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{
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math_Vector sol(1,4),valsol(1,4),secmember(1,4);
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math_Matrix gradsol(1,4,1,4);
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Standard_Real prm = P.Parameter();
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Standard_Integer low = Poles.Lower();
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Standard_Integer upp = Poles.Upper();
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Standard_Boolean istgt;
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P.ParametersOnS1(sol(1),sol(2));
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P.ParametersOnS2(sol(3),sol(4));
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Set(prm);
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Values(sol,valsol,gradsol);
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IsSolution(sol,tol);
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istgt = IsTangencyPoint();
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Poles2d(Poles2d.Lower()).SetCoord(sol(1),sol(2));
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Poles2d(Poles2d.Upper()).SetCoord(sol(3),sol(4));
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if (!istgt) {
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DPoles2d(Poles2d.Lower()).SetCoord(Tangent2dOnS1().X(),
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Tangent2dOnS1().Y());
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DPoles2d(Poles2d.Upper()).SetCoord(Tangent2dOnS2().X(),
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Tangent2dOnS2().Y());
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}
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Poles(low) = PointOnS1();
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Poles(upp) = PointOnS2();
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Weights(low) = 1.0;
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Weights(upp) = 1.0;
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if (!istgt) {
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DPoles(low) = TangentOnS1();
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DPoles(upp) = TangentOnS2();
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DWeights(low) = 0.0;
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DWeights(upp) = 0.0;
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}
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return (!istgt);
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}
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//=======================================================================
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//function : Section
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//purpose :
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//=======================================================================
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void BlendFunc_GenChamfer::Section(const Blend_Point& P,
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TColgp_Array1OfPnt& Poles,
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TColgp_Array1OfPnt2d& Poles2d,
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TColStd_Array1OfReal& Weights)
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{
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Standard_Real u1,v1,u2,v2,prm = P.Parameter();
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Standard_Integer low = Poles.Lower();
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Standard_Integer upp = Poles.Upper();
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math_Vector X(1,4), F(1,4);
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P.ParametersOnS1(u1,v1);
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P.ParametersOnS2(u2,v2);
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X(1)=u1;
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X(2)=v1;
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X(3)=u2;
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X(4)=v2;
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Poles2d(Poles2d.Lower()).SetCoord(u1,v1);
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Poles2d(Poles2d.Upper()).SetCoord(u2,v2);
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Set(prm);
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Value(X,F);
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Poles(low) = PointOnS1();
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Poles(upp) = PointOnS2();
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Weights(low) = 1.0;
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Weights(upp) = 1.0;
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}
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void BlendFunc_GenChamfer::Resolution(const Standard_Integer IC2d, const Standard_Real Tol,
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Standard_Real& TolU, Standard_Real& TolV) const
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{
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if(IC2d == 1){
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TolU = surf1->UResolution(Tol);
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TolV = surf1->VResolution(Tol);
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}
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else {
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TolU = surf2->UResolution(Tol);
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TolV = surf2->VResolution(Tol);
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}
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}
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