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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.
245 lines
8.1 KiB
C++
245 lines
8.1 KiB
C++
// Created on: 1995-04-28
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// Created by: Flore Lantheaume
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// Copyright (c) 1995-1999 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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#include <Adaptor3d_HSurface.hxx>
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#include <ChFiDS_Spine.hxx>
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#include <ChFiDS_SurfData.hxx>
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#include <ChFiKPart_ComputeData.hxx>
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#include <ChFiKPart_ComputeData_Fcts.hxx>
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#include <ElCLib.hxx>
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#include <ElSLib.hxx>
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#include <Geom2d_Line.hxx>
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#include <Geom_Line.hxx>
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#include <Geom_Plane.hxx>
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#include <gp.hxx>
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#include <gp_Ax3.hxx>
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#include <gp_Dir.hxx>
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#include <gp_Dir2d.hxx>
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#include <gp_Lin.hxx>
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#include <gp_Lin2d.hxx>
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#include <gp_Pln.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Pnt2d.hxx>
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#include <IntAna_QuadQuadGeo.hxx>
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#include <Precision.hxx>
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#include <TopOpeBRepDS_DataStructure.hxx>
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//=======================================================================
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//function : MakeChamfer
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//Purpose : Compute the chamfer in the particular case plane/plane.
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// Compute the SurfData <Data> of the chamfer on the <Spine>
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// between the plane <Pl1> and the plane <Pl2>, with distances
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// <Dis1> on <Pl1> and <Dis2> on <Pl2>.
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// <First> is the parameter of the start point on the <Spine>
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// <Or1> and <Or2> are the orientations of the plane <Pl1> and
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// <Pl2>, and <Of1> the orientation of the face build on the
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// plane <Pl1>.
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//Out : True if the chamfer has been computed
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// False else
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//=======================================================================
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Standard_Boolean ChFiKPart_MakeChamfer(TopOpeBRepDS_DataStructure& DStr,
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const Handle(ChFiDS_SurfData)& Data,
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const ChFiDS_ChamfMode theMode,
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const gp_Pln& Pl1,
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const gp_Pln& Pl2,
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const TopAbs_Orientation Or1,
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const TopAbs_Orientation Or2,
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const Standard_Real theDis1,
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const Standard_Real theDis2,
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const gp_Lin& Spine,
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const Standard_Real First,
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const TopAbs_Orientation Of1)
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{
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// Creation of the plane which carry the chamfer
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// compute the normals to the planes Pl1 and Pl2
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gp_Ax3 Pos1 = Pl1.Position();
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gp_Dir D1 = Pos1.XDirection().Crossed(Pos1.YDirection());
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if (Or1 == TopAbs_REVERSED) { D1.Reverse(); }
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gp_Ax3 Pos2 = Pl2.Position();
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gp_Dir D2 = Pos2.XDirection().Crossed(Pos2.YDirection());
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if (Or2 == TopAbs_REVERSED) { D2.Reverse(); }
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// compute the intersection line of Pl1 and Pl2
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IntAna_QuadQuadGeo LInt (Pl1,Pl2,Precision::Angular(),
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Precision::Confusion());
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gp_Pnt P;
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Standard_Real Fint;
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if (LInt.IsDone()) {
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Fint = ElCLib::Parameter(LInt.Line(1),ElCLib::Value(First,Spine));
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P = ElCLib::Value(Fint,LInt.Line(1));
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}
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else { return Standard_False; }
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gp_Dir LinAx1 = Spine.Direction();
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gp_Dir VecTransl1 = LinAx1.Crossed(D1);
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if ( VecTransl1.Dot(D2) <=0. )
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VecTransl1.Reverse();
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gp_Dir VecTransl2 = LinAx1.Crossed(D2);
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if ( VecTransl2.Dot(D1) <=0. )
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VecTransl2.Reverse();
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Standard_Real Dis1 = theDis1, Dis2 = theDis2;
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Standard_Real Alpha = VecTransl1.Angle(VecTransl2);
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Standard_Real CosHalfAlpha = Cos(Alpha/2);
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if (theMode == ChFiDS_ConstThroatChamfer)
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Dis1 = Dis2 = theDis1 / CosHalfAlpha;
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else if (theMode == ChFiDS_ConstThroatWithPenetrationChamfer)
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{
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Standard_Real aDis1 = Min(theDis1, theDis2);
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Standard_Real aDis2 = Max(theDis1, theDis2);
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Standard_Real dis1dis1 = aDis1*aDis1, dis2dis2 = aDis2*aDis2;
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Standard_Real SinAlpha = Sin(Alpha);
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Standard_Real CosAlpha = Cos(Alpha);
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Standard_Real CotanAlpha = CosAlpha/SinAlpha;
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Dis1 = sqrt(dis2dis2 - dis1dis1) - aDis1*CotanAlpha;
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Standard_Real CosBeta = sqrt(1-dis1dis1/dis2dis2)*CosAlpha + aDis1/aDis2*SinAlpha;
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Standard_Real FullDist1 = aDis2/CosBeta;
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Dis2 = FullDist1 - aDis1/SinAlpha;
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}
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// Compute a point on the plane Pl1 and on the chamfer
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gp_Pnt P1( P.X()+Dis1*VecTransl1.X(),
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P.Y()+Dis1*VecTransl1.Y(),
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P.Z()+Dis1*VecTransl1.Z());
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// Point on the plane Pl2 and on the chamfer
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gp_Pnt P2( P.X()+Dis2*VecTransl2.X(),
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P.Y()+Dis2*VecTransl2.Y(),
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P.Z()+Dis2*VecTransl2.Z());
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//the middle point of P1 P2 is the origin of the chamfer
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gp_Pnt Po ( (P1.X()+P2.X())/2. ,(P1.Y()+P2.Y())/2. , (P1.Z()+P2.Z())/2. );
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// compute a second point on the plane Pl2
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gp_Pnt Pp = ElCLib::Value(Fint+10.,LInt.Line(1));
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gp_Pnt P22(Pp.X()+Dis2*VecTransl2.X(),
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Pp.Y()+Dis2*VecTransl2.Y(),
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Pp.Z()+Dis2*VecTransl2.Z());
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// Compute the normal vector <AxisPlan> to the chamfer's plane
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gp_Dir V1 ( P2.X()-P1.X(), P2.Y()-P1.Y(), P2.Z()-P1.Z());
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gp_Dir V2 ( P22.X()-P1.X(), P22.Y()-P1.Y(), P22.Z()-P1.Z());
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gp_Dir AxisPlan = V1.Crossed(V2);
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gp_Dir xdir = LinAx1; // u axis
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gp_Ax3 PlanAx3 ( Po, AxisPlan, xdir);
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if (PlanAx3.YDirection().Dot(D2)>=0.) PlanAx3.YReverse();
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Handle(Geom_Plane) gpl= new Geom_Plane(PlanAx3);
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Data->ChangeSurf(ChFiKPart_IndexSurfaceInDS(gpl,DStr));
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// About the orientation of the chamfer plane
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// Compute the normal to the face 1
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gp_Dir norpl = Pos1.XDirection().Crossed(Pos1.YDirection());
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gp_Dir norface1 = norpl;
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if (Of1 == TopAbs_REVERSED ) { norface1.Reverse(); }
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// Compute the orientation of the chamfer plane
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gp_Dir norplch = gpl->Pln().Position().XDirection().Crossed (
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gpl->Pln().Position().YDirection());
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gp_Dir DirCh12(gp_Vec(P1, P2));
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Standard_Boolean toreverse = ( norplch.Dot(norface1) <= 0. );
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if (VecTransl1.Dot(DirCh12) > 0) toreverse = !toreverse;
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if (toreverse)
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Data->ChangeOrientation() = TopAbs_REVERSED;
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else
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Data->ChangeOrientation() = TopAbs_FORWARD;
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// Loading of the FaceInterferences with pcurves & 3d curves.
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// case face 1
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gp_Lin linPln(P1, xdir);
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Handle(Geom_Line) GLinPln1 = new Geom_Line(linPln);
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Standard_Real u,v;
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ElSLib::PlaneParameters(Pos1,P1,u,v);
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gp_Pnt2d p2dPln(u,v);
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gp_Dir2d dir2dPln( xdir.Dot(Pos1.XDirection()),
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xdir.Dot(Pos1.YDirection()));
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gp_Lin2d lin2dPln(p2dPln,dir2dPln);
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Handle(Geom2d_Line) GLin2dPln1 = new Geom2d_Line(lin2dPln);
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ElSLib::PlaneParameters(PlanAx3,P1,u,v);
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p2dPln.SetCoord(u,v);
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lin2dPln.SetLocation(p2dPln);
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lin2dPln.SetDirection(gp::DX2d());
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Handle(Geom2d_Line) GLin2dPlnCh1 = new Geom2d_Line(lin2dPln);
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TopAbs_Orientation trans;
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toreverse = ( norplch.Dot(norpl) <= 0. );
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if (VecTransl1.Dot(DirCh12) > 0) toreverse = !toreverse;
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if (toreverse)
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trans = TopAbs_FORWARD;
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else
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trans = TopAbs_REVERSED;
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Data->ChangeInterferenceOnS1().
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SetInterference(ChFiKPart_IndexCurveInDS(GLinPln1,DStr),
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trans,GLin2dPln1,GLin2dPlnCh1);
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// case face 2
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linPln.SetLocation(P2);
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Handle(Geom_Line) GLinPln2 = new Geom_Line(linPln);
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ElSLib::PlaneParameters(Pos2,P2,u,v);
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p2dPln.SetCoord(u,v);
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dir2dPln.SetCoord( xdir.Dot(Pos2.XDirection()),
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xdir.Dot(Pos2.YDirection()));
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lin2dPln.SetLocation(p2dPln);
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lin2dPln.SetDirection(dir2dPln);
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Handle(Geom2d_Line) GLin2dPln2 = new Geom2d_Line(lin2dPln);
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ElSLib::PlaneParameters(PlanAx3,P2,u,v);
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p2dPln.SetCoord(u,v);
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lin2dPln.SetLocation(p2dPln);
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lin2dPln.SetDirection(gp::DX2d());
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Handle(Geom2d_Line) GLin2dPlnCh2 = new Geom2d_Line(lin2dPln);
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norpl = Pos2.XDirection().Crossed(Pos2.YDirection());
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toreverse = ( norplch.Dot(norpl) <= 0. );
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if (VecTransl2.Dot(DirCh12) < 0) toreverse = !toreverse;
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if (toreverse)
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trans = TopAbs_REVERSED;
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else
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trans = TopAbs_FORWARD;
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Data->ChangeInterferenceOnS2().
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SetInterference(ChFiKPart_IndexCurveInDS(GLinPln2,DStr),
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trans,GLin2dPln2,GLin2dPlnCh2);
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return Standard_True;
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}
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