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Rewrite local function ModifySurface of BlockFix_SphereSpaceModifier
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jgv
jfa
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8d33dd3a86
commit
d6f16273ad
@ -38,13 +38,17 @@
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#include <TopoDS_Edge.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopoDS_Iterator.hxx>
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#include <BRep_Tool.hxx>
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#include <BRep_Builder.hxx>
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#include <BRepTools.hxx>
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#include <BRepAdaptor_Curve2d.hxx>
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#include <BRepTopAdaptor_FClass2d.hxx>
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#include <BRepGProp.hxx>
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#include <GProp_GProps.hxx>
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#include <ElSLib.hxx>
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#include <Geom_Circle.hxx>
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#include <Geom_TrimmedCurve.hxx>
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#include <Geom_SphericalSurface.hxx>
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#include <Geom_RectangularTrimmedSurface.hxx>
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@ -87,64 +91,145 @@ void BlockFix_SphereSpaceModifier::SetTolerance(const Standard_Real Tol)
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//function : NewSurface
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//purpose :
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//=======================================================================
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static Standard_Boolean ModifySurface(const TopoDS_Face& aFace,
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const Handle(Geom_Surface)& aSurface,
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Handle(Geom_Surface)& aNewSurface)
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static Standard_Boolean ModifySurface(const TopoDS_Face& theFace,
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const Handle(Geom_Surface)& theSurface,
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Handle(Geom_Surface)& theNewSurface)
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{
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Handle(Geom_Surface) S = aSurface;
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if(S->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
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TopoDS_Face aFace = theFace;
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aFace.Orientation (TopAbs_FORWARD);
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Handle(Geom_Surface) aNewSurface;
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Handle(Geom_Surface) aSurf = theSurface;
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if (aSurf->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
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Handle(Geom_RectangularTrimmedSurface) RTS =
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Handle(Geom_RectangularTrimmedSurface)::DownCast(S);
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S = RTS->BasisSurface();
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Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurf);
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aSurf = RTS->BasisSurface();
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}
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if(S->IsKind(STANDARD_TYPE(Geom_SphericalSurface))) {
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if (aSurf->IsKind(STANDARD_TYPE(Geom_SphericalSurface))) {
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Standard_Real Umin, Umax, Vmin, Vmax;
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ShapeAnalysis::GetFaceUVBounds(aFace,Umin, Umax, Vmin, Vmax);
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ShapeAnalysis::GetFaceUVBounds (aFace, Umin, Umax, Vmin, Vmax);
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Standard_Real PI2 = M_PI/2.;
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if(Vmax > PI2 - Precision::PConfusion() || Vmin < -PI2+::Precision::PConfusion()) {
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Handle(Geom_SphericalSurface) aSphere = Handle(Geom_SphericalSurface)::DownCast(S);
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gp_Sphere sp = aSphere->Sphere();
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//modified by jgv, 12.11.2012 for issue 21777//
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Standard_Real Radius = sp.Radius();
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Standard_Real HalfArea = 2.*M_PI*Radius*Radius;
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GProp_GProps Properties;
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BRepGProp::SurfaceProperties(aFace, Properties);
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Standard_Real anArea = Properties.Mass();
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Standard_Real AreaTol = Radius*Radius*1.e-6;
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if (anArea > HalfArea - AreaTol) //no chance to avoid singularity
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return Standard_False;
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///////////////////////////////////////////////
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gp_Ax3 ax3 = sp.Position();
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if(Abs(Vmax-Vmin) < PI2) {
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gp_Ax3 axnew3(ax3.Axis().Location(), ax3.Direction()^ax3.XDirection(),ax3.XDirection());
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sp.SetPosition(axnew3);
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Handle(Geom_SphericalSurface) aNewSphere = new Geom_SphericalSurface(sp);
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aNewSurface = aNewSphere;
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return Standard_True;
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}
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else {
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gp_Pnt PC = ax3.Location();
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Standard_Real Vpar;
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if(fabs(PI2-Vmax)>fabs(-PI2-Vmin))
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Vpar = (PI2+Vmax)/2.;
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else
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Vpar = (-PI2+Vmin)/2.;
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Standard_Real Upar = (Umin+Umax)/2.;;
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gp_Pnt PN,PX;
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S->D0(Upar,Vpar,PN);
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S->D0(Upar+PI2,0.,PX);
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gp_Dir newNorm(gp_Vec(PC,PN));
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gp_Dir newDirX(gp_Vec(PC,PX));
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gp_Ax3 axnew3(ax3.Axis().Location(), newNorm, newDirX);
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sp.SetPosition(axnew3);
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Handle(Geom_SphericalSurface) aNewSphere = new Geom_SphericalSurface(sp);
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aNewSurface = aNewSphere;
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return Standard_True;
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}
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}
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Handle(Geom_SphericalSurface) aSphere = Handle(Geom_SphericalSurface)::DownCast(aSurf);
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gp_Sphere sp = aSphere->Sphere();
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Standard_Real Radius = sp.Radius();
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gp_Ax3 ax3 = sp.Position();
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gp_Pnt aCentre = sp.Location();
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TopoDS_Wire aWire = BRepTools::OuterWire (aFace);
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BRepTopAdaptor_FClass2d aClassifier (aFace, Precision::PConfusion());
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TopTools_MapOfShape aEmap;
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const Standard_Real anOffsetValue = 0.01*M_PI;
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for (Standard_Integer ii = 1; ii <= 2; ii++)
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{
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TopoDS_Iterator itw (aWire);
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for (; itw.More(); itw.Next())
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{
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const TopoDS_Edge& anEdge = TopoDS::Edge (itw.Value());
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if (aEmap.Contains (anEdge) ||
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anEdge.Orientation() == TopAbs_INTERNAL ||
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anEdge.Orientation() == TopAbs_EXTERNAL ||
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BRep_Tool::Degenerated (anEdge) ||
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BRepTools::IsReallyClosed (anEdge, aFace))
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continue;
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BRepAdaptor_Curve2d aBAcurve2d (anEdge, aFace);
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GeomAbs_CurveType aType = aBAcurve2d.GetType();
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if (ii == 1 && aType == GeomAbs_Line) //first pass: consider only curvilinear edges
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continue;
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Standard_Real aMidPar = (aBAcurve2d.FirstParameter() + aBAcurve2d.LastParameter())/2;
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gp_Pnt2d aMidP2d;
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gp_Vec2d aTangent;
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aBAcurve2d.D1 (aMidPar, aMidP2d, aTangent);
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if (anEdge.Orientation() == TopAbs_REVERSED)
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aTangent.Reverse();
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aTangent.Normalize();
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gp_Vec2d aNormal (aTangent.Y(), -aTangent.X());
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aNormal *= anOffsetValue;
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gp_Pnt2d anUpperPole = aMidP2d.Translated (aNormal);
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if (anUpperPole.Y() < -PI2 || anUpperPole.Y() > PI2)
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{
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aEmap.Add(anEdge);
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continue;
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}
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if (anUpperPole.X() < 0.)
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anUpperPole.SetX (anUpperPole.X() + 2.*M_PI);
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else if (anUpperPole.X() > 2.*M_PI)
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anUpperPole.SetX (anUpperPole.X() - 2.*M_PI);
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TopAbs_State aStatus = aClassifier.Perform (anUpperPole);
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if (aStatus != TopAbs_OUT)
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{
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aEmap.Add(anEdge);
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continue;
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}
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gp_Pnt anUpperPole3d = aSphere->Value (anUpperPole.X(), anUpperPole.Y());
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gp_Vec aVec (aCentre, anUpperPole3d);
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aVec.Reverse();
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gp_Pnt aLowerPole3d = aCentre.Translated (aVec);
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Standard_Real aU, aV;
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ElSLib::Parameters (sp, aLowerPole3d, aU, aV);
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gp_Pnt2d aLowerPole (aU, aV);
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aStatus = aClassifier.Perform (aLowerPole);
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if (aStatus != TopAbs_OUT)
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{
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aEmap.Add(anEdge);
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continue;
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}
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//Build a meridian
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gp_Vec anUp (aCentre, anUpperPole3d);
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anUp.Normalize();
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gp_Pnt aMidPnt = aSphere->Value (aMidP2d.X(), aMidP2d.Y());
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gp_Vec aMidOnEdge (aCentre, aMidPnt);
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aMidOnEdge.Normalize();
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gp_Vec AxisOfCircle = anUp ^ aMidOnEdge;
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gp_Vec XDirOfCircle = anUp ^ AxisOfCircle;
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gp_Ax2 anAxis (aCentre, AxisOfCircle, XDirOfCircle);
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Handle(Geom_Circle) aCircle = new Geom_Circle (anAxis, Radius);
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Handle(Geom_TrimmedCurve) aMeridian = new Geom_TrimmedCurve (aCircle, -PI2, PI2);
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//Check the meridian
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Standard_Boolean IsInnerPointFound = Standard_False;
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Standard_Integer NbSamples = 10;
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Standard_Real aDelta = M_PI / NbSamples;
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for (Standard_Integer jj = 1; jj < NbSamples; jj++)
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{
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Standard_Real aParam = -PI2 + jj*aDelta;
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gp_Pnt aPnt = aMeridian->Value (aParam);
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ElSLib::Parameters (sp, aPnt, aU, aV);
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gp_Pnt2d aP2d (aU, aV);
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aStatus = aClassifier.Perform (aP2d);
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if (aStatus != TopAbs_OUT)
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{
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IsInnerPointFound = Standard_True;
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break;
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}
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}
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if (IsInnerPointFound)
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{
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aEmap.Add(anEdge);
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continue;
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}
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gp_Ax3 anAxisOfNewSphere (aCentre, anUp, XDirOfCircle);
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aNewSurface = new Geom_SphericalSurface (anAxisOfNewSphere, Radius);
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break;
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} //for (; itw.More(); itw.Next()) (iteration on outer wire)
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if (!aNewSurface.IsNull())
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break;
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} //for (Standard_Integer ii = 1; ii <= 2; ii++) (two passes)
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}
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return Standard_False;
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if (aNewSurface.IsNull())
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return Standard_False;
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theNewSurface = aNewSurface;
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return Standard_True;
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}
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Standard_Boolean BlockFix_SphereSpaceModifier::NewSurface(const TopoDS_Face& F,
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