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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.
223 lines
6.3 KiB
C++
223 lines
6.3 KiB
C++
// Created on: 1992-11-19
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// Created by: Remi LEQUETTE
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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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#include <BRepClass_Intersector.ixx>
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#include <BRep_Tool.hxx>
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#include <BRepAdaptor_Curve2d.hxx>
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#include <BRepAdaptor_Surface.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopExp.hxx>
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#include <IntRes2d_Domain.hxx>
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#include <Geom2dLProp_CLProps2d.hxx>
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#include <Geom2d_Curve.hxx>
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#include <ElCLib.hxx>
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#include <Precision.hxx>
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#include <Geom2d_Line.hxx>
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#include <Geom2dInt_GInter.hxx>
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#include <Extrema_ExtPC2d.hxx>
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#include <IntRes2d_Transition.hxx>
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#include <IntRes2d_IntersectionPoint.hxx>
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static
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void RefineTolerance(const TopoDS_Face& aF,
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const BRepAdaptor_Curve2d& aC,
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const Standard_Real aT,
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Standard_Real& aTolZ);
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//=======================================================================
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//function : BRepClass_Intersector
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//purpose :
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//=======================================================================
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BRepClass_Intersector::BRepClass_Intersector()
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{
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}
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//=======================================================================
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//function : Perform
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//purpose :
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//=======================================================================
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void BRepClass_Intersector::Perform(const gp_Lin2d& L,
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const Standard_Real P,
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const Standard_Real Tol,
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const BRepClass_Edge& E)
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{
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Standard_Real deb = 0.0, fin = 0.0, aTolZ = Tol;
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Handle(Geom2d_Curve) aC2D;
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//
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const TopoDS_Edge& EE = E.Edge();
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const TopoDS_Face& F = E.Face();
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//
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aC2D=BRep_Tool::CurveOnSurface(EE, F, deb, fin);
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if (aC2D.IsNull()) {
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done = Standard_False; // !IsDone()
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return;
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}
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//
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BRepAdaptor_Curve2d C(EE, F);
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//
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deb = C.FirstParameter();
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fin = C.LastParameter();
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//
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// Case of "ON": direct check of belonging to edge
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// taking into account the tolerance
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Extrema_ExtPC2d anExtPC2d(L.Location(), C);
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Standard_Real MinDist = RealLast(), aDist;
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Standard_Integer MinInd = 0, i;
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if (anExtPC2d.IsDone())
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{
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const Standard_Integer aNbPnts = anExtPC2d.NbExt();
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for (i = 1; i <= aNbPnts; ++i)
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{
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aDist = anExtPC2d.SquareDistance(i);
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if (aDist < MinDist)
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{
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MinDist = aDist;
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MinInd = i;
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}
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}
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}
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if (MinInd) {
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MinDist = sqrt(MinDist);
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}
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if (MinDist <= aTolZ) {
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gp_Pnt2d pnt_exact = (anExtPC2d.Point(MinInd)).Value();
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Standard_Real par = (anExtPC2d.Point(MinInd)).Parameter();
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//
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RefineTolerance(F, C, par, aTolZ);
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//
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if (MinDist <= aTolZ) {
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IntRes2d_Transition tr_on_lin(IntRes2d_Head);
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IntRes2d_Position pos_on_curve = IntRes2d_Middle;
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if (Abs(par - deb) <= Precision::Confusion()) {
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pos_on_curve = IntRes2d_Head;
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}
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else if (Abs(par - fin) <= Precision::Confusion()) {
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pos_on_curve = IntRes2d_End;
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}
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//
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IntRes2d_Transition tr_on_curve(pos_on_curve);
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IntRes2d_IntersectionPoint pnt_inter(pnt_exact, 0., par,
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tr_on_lin, tr_on_curve,
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Standard_False);
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//
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Append(pnt_inter);
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done = Standard_True;
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return;
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}
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}
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//
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gp_Pnt2d pdeb,pfin;
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C.D0(deb,pdeb);
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C.D0(fin,pfin);
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Standard_Real toldeb = 1.e-5, tolfin = 1.e-5;
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IntRes2d_Domain DL;
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//
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if(P!=RealLast()) {
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DL.SetValues(L.Location(),0.,aTolZ,ElCLib::Value(P,L),P,aTolZ);
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}
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else {
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DL.SetValues(L.Location(),0.,aTolZ,Standard_True);
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}
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IntRes2d_Domain DE(pdeb,deb,toldeb,pfin,fin,tolfin);
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// temporary periodic domain
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if (C.Curve()->IsPeriodic()) {
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DE.SetEquivalentParameters(C.FirstParameter(),
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C.FirstParameter() +
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C.Curve()->LastParameter() -
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C.Curve()->FirstParameter());
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}
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Handle(Geom2d_Line) GL= new Geom2d_Line(L);
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Geom2dAdaptor_Curve CGA(GL);
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Geom2dInt_GInter Inter(CGA,DL,C,DE,
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Precision::PConfusion(),
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Precision::PIntersection());
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//
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SetValues(Inter);
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}
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//=======================================================================
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//function : LocalGeometry
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//purpose :
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//=======================================================================
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void BRepClass_Intersector::LocalGeometry(const BRepClass_Edge& E,
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const Standard_Real U,
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gp_Dir2d& Tang,
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gp_Dir2d& Norm,
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Standard_Real& C) const
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{
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Standard_Real f,l;
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Geom2dLProp_CLProps2d Prop(BRep_Tool::CurveOnSurface(E.Edge(),E.Face(),f,l),
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U,2,Precision::PConfusion());
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Prop.Tangent(Tang);
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C = Prop.Curvature();
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if (C > Precision::PConfusion())
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Prop.Normal(Norm);
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else
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Norm.SetCoord(Tang.Y(),-Tang.X());
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}
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//=======================================================================
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//function : RefineTolerance
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//purpose :
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//=======================================================================
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void RefineTolerance(const TopoDS_Face& aF,
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const BRepAdaptor_Curve2d& aC,
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const Standard_Real aT,
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Standard_Real& aTolZ)
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{
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GeomAbs_SurfaceType aTypeS;
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//
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BRepAdaptor_Surface aBAS(aF, Standard_False);
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//
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aTypeS=aBAS.GetType();
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if (aTypeS==GeomAbs_Cylinder) {
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Standard_Real aURes, aVRes, aTolX;
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gp_Pnt2d aP2D;
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gp_Vec2d aV2D;
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//
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aURes=aBAS.UResolution(aTolZ);
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aVRes=aBAS.VResolution(aTolZ);
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//
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aC.D1(aT, aP2D, aV2D);
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gp_Dir2d aD2D(aV2D);
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//
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aTolX=aURes*aD2D.Y()+aVRes*aD2D.X();
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if (aTolX<0.) {
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aTolX=-aTolX;
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}
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//
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if (aTolX < Precision::Confusion()) {
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aTolX = Precision::Confusion();
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}
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//
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if (aTolX<aTolZ) {
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aTolZ=aTolX;
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}
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}
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}
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