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2caff0b32f
Don't create data structures for whole set of faces. Necessary structures are created directly in BRepMesh_FastDiscret. Don't copy nodes data during scaling, single structure is used. Remove lines used for debug Fix sphere: resolve problem came from merging. Keep code clean - remove unnecessary logic, expected to be used for complicated restoration process. Test cases for issue CR25364
331 lines
10 KiB
C++
331 lines
10 KiB
C++
// 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 <BRepMesh_ShapeTool.hxx>
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#include <Bnd_Box.hxx>
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#include <TopoDS_Edge.hxx>
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#include <BRepBndLib.hxx>
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#include <TopoDS.hxx>
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#include <BRep_Tool.hxx>
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#include <TopExp_Explorer.hxx>
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#include <BRepAdaptor_HSurface.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <Poly_Triangulation.hxx>
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#include <BRep_Builder.hxx>
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#include <TopExp.hxx>
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#include <BRepAdaptor_Curve.hxx>
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namespace {
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//! Auxilary struct to take a tolerance of edge.
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struct EdgeTolerance
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{
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static Standard_Real Get(const TopoDS_Shape& theEdge)
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{
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return BRep_Tool::Tolerance(TopoDS::Edge(theEdge));
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}
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};
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//! Auxilary struct to take a tolerance of vertex.
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struct VertexTolerance
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{
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static Standard_Real Get(const TopoDS_Shape& theVertex)
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{
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return BRep_Tool::Tolerance(TopoDS::Vertex(theVertex));
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}
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};
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//! Returns maximum tolerance of face element of the specified type.
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template<TopAbs_ShapeEnum ShapeType, class ToleranceExtractor>
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Standard_Real MaxTolerance(const TopoDS_Face& theFace)
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{
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Standard_Real aMaxTolerance = RealFirst();
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TopExp_Explorer aExplorer(theFace, ShapeType);
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for (; aExplorer.More(); aExplorer.Next())
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{
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Standard_Real aTolerance = ToleranceExtractor::Get(aExplorer.Current());
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if (aTolerance > aMaxTolerance)
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aMaxTolerance = aTolerance;
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}
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return aMaxTolerance;
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}
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}
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//=======================================================================
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//function : BoxMaxDimension
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//purpose :
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//=======================================================================
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Standard_Real BRepMesh_ShapeTool::MaxFaceTolerance(const TopoDS_Face& theFace)
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{
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Standard_Real aMaxTolerance = BRep_Tool::Tolerance(theFace);
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Standard_Real aTolerance = Max(
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MaxTolerance<TopAbs_EDGE, EdgeTolerance >(theFace),
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MaxTolerance<TopAbs_VERTEX, VertexTolerance>(theFace));
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return Max(aMaxTolerance, aTolerance);
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}
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//=======================================================================
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//function : BoxMaxDimension
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::BoxMaxDimension(const Bnd_Box& theBox,
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Standard_Real& theMaxDimension)
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{
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if(theBox.IsVoid())
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return;
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Standard_Real aMinX, aMinY, aMinZ, aMaxX, aMaxY, aMaxZ;
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theBox.Get(aMinX, aMinY, aMinZ, aMaxX, aMaxY, aMaxZ);
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theMaxDimension = Max(aMaxX - aMinX, Max(aMaxY - aMinY, aMaxZ - aMinZ));
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}
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//=======================================================================
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//function : RelativeEdgeDeflection
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//purpose :
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//=======================================================================
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Standard_Real BRepMesh_ShapeTool::RelativeEdgeDeflection(
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const TopoDS_Edge& theEdge,
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const Standard_Real theDeflection,
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const Standard_Real theMaxShapeSize,
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Standard_Real& theAdjustmentCoefficient)
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{
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theAdjustmentCoefficient = 1.;
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Standard_Real aDefEdge = theDeflection;
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if(theEdge.IsNull())
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return aDefEdge;
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Bnd_Box aBox;
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BRepBndLib::Add(theEdge, aBox, Standard_False);
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BoxMaxDimension(aBox, aDefEdge);
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// Adjust resulting value in relation to the total size
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theAdjustmentCoefficient = theMaxShapeSize / (2 * aDefEdge);
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if (theAdjustmentCoefficient < 0.5)
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theAdjustmentCoefficient = 0.5;
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else if (theAdjustmentCoefficient > 2.)
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theAdjustmentCoefficient = 2.;
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return (theAdjustmentCoefficient * aDefEdge * theDeflection);
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}
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//=======================================================================
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//function : FindUV
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//purpose :
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//=======================================================================
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gp_XY BRepMesh_ShapeTool::FindUV(
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const Standard_Integer theIndexOfPnt3d,
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const gp_Pnt2d& thePnt2d,
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const TopoDS_Vertex& theVertex,
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const Standard_Real theMinDistance,
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const Handle(BRepMesh_FaceAttribute)& theFaceAttribute)
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{
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const gp_XY& aPnt2d = thePnt2d.Coord();
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BRepMesh::HDMapOfIntegerListOfXY& aLocation2D =
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theFaceAttribute->ChangeLocation2D();
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if (!aLocation2D->IsBound(theIndexOfPnt3d))
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{
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BRepMesh::ListOfXY aPoints2d;
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aPoints2d.Append(aPnt2d);
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aLocation2D->Bind(theIndexOfPnt3d, aPoints2d);
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return aPnt2d;
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}
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BRepMesh::ListOfXY& aPoints2d = aLocation2D->ChangeFind(theIndexOfPnt3d);
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// Find the most closest 2d point to the given one.
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gp_XY aUV;
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Standard_Real aMinDist = RealLast();
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BRepMesh::ListOfXY::Iterator aPoint2dIt(aPoints2d);
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for (; aPoint2dIt.More(); aPoint2dIt.Next())
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{
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const gp_XY& aCurPnt2d = aPoint2dIt.Value();
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Standard_Real aDist = (aPnt2d - aCurPnt2d).Modulus();
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if (aDist < aMinDist)
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{
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aUV = aCurPnt2d;
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aMinDist = aDist;
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}
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}
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const Standard_Real aTolerance =
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Min(2. * BRep_Tool::Tolerance(theVertex), theMinDistance);
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// Get face limits
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Standard_Real aDiffU = theFaceAttribute->GetUMax() - theFaceAttribute->GetUMin();
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Standard_Real aDiffV = theFaceAttribute->GetVMax() - theFaceAttribute->GetVMin();
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const Standard_Real Utol2d = .5 * aDiffU;
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const Standard_Real Vtol2d = .5 * aDiffV;
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const Handle(BRepAdaptor_HSurface)& aSurface = theFaceAttribute->Surface();
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const gp_Pnt aPnt1 = aSurface->Value(aUV.X(), aUV.Y());
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const gp_Pnt aPnt2 = aSurface->Value(aPnt2d.X(), aPnt2d.Y());
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//! If selected point is too far from the given one in parametric space
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//! or their positions in 3d are different, add the given point as unique.
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if (Abs(aUV.X() - aPnt2d.X()) > Utol2d ||
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Abs(aUV.Y() - aPnt2d.Y()) > Vtol2d ||
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!aPnt1.IsEqual(aPnt2, aTolerance))
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{
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aUV = aPnt2d;
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aPoints2d.Append(aUV);
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}
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return aUV;
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}
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//=======================================================================
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//function : AddInFace
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::AddInFace(
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const TopoDS_Face& theFace,
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Handle(Poly_Triangulation)& theTriangulation)
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{
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const TopLoc_Location& aLoc = theFace.Location();
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if (!aLoc.IsIdentity())
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{
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gp_Trsf aTrsf = aLoc.Transformation();
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aTrsf.Invert();
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TColgp_Array1OfPnt& aNodes = theTriangulation->ChangeNodes();
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for (Standard_Integer i = aNodes.Lower(); i <= aNodes.Upper(); ++i)
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aNodes(i).Transform(aTrsf);
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}
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BRep_Builder aBuilder;
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aBuilder.UpdateFace(theFace, theTriangulation);
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}
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//=======================================================================
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//function : NullifyFace
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::NullifyFace(const TopoDS_Face& theFace)
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{
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BRep_Builder aBuilder;
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aBuilder.UpdateFace(theFace, Handle(Poly_Triangulation)());
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}
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//=======================================================================
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//function : NullifyEdge
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::NullifyEdge(
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const TopoDS_Edge& theEdge,
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const Handle(Poly_Triangulation)& theTriangulation,
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const TopLoc_Location& theLocation)
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{
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UpdateEdge(theEdge, Handle(Poly_PolygonOnTriangulation)(),
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theTriangulation, theLocation);
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}
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//=======================================================================
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//function : UpdateEdge
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::UpdateEdge(
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const TopoDS_Edge& theEdge,
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const Handle(Poly_PolygonOnTriangulation)& thePolygon,
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const Handle(Poly_Triangulation)& theTriangulation,
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const TopLoc_Location& theLocation)
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{
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BRep_Builder aBuilder;
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aBuilder.UpdateEdge(theEdge, thePolygon, theTriangulation, theLocation);
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}
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//=======================================================================
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//function : UpdateEdge
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//purpose :
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//=======================================================================
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void BRepMesh_ShapeTool::UpdateEdge(
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const TopoDS_Edge& theEdge,
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const Handle(Poly_PolygonOnTriangulation)& thePolygon1,
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const Handle(Poly_PolygonOnTriangulation)& thePolygon2,
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const Handle(Poly_Triangulation)& theTriangulation,
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const TopLoc_Location& theLocation)
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{
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BRep_Builder aBuilder;
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aBuilder.UpdateEdge(theEdge, thePolygon1, thePolygon2,
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theTriangulation, theLocation);
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}
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//=======================================================================
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//function : UseLocation
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//purpose :
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//=======================================================================
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gp_Pnt BRepMesh_ShapeTool::UseLocation(const gp_Pnt& thePnt,
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const TopLoc_Location& theLoc)
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{
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if (theLoc.IsIdentity())
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return thePnt;
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return thePnt.Transformed(theLoc.Transformation());
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}
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//=======================================================================
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//function : IsDegenerated
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//purpose :
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//=======================================================================
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Standard_Boolean BRepMesh_ShapeTool::IsDegenerated(
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const TopoDS_Edge& theEdge,
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const TopoDS_Face& theFace)
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{
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// Get vertices
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TopoDS_Vertex pBegin, pEnd;
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TopExp::Vertices(theEdge, pBegin, pEnd);
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if (pBegin.IsNull() || pEnd.IsNull())
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return Standard_True;
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if (BRep_Tool::Degenerated(theEdge))
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return Standard_True;
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if (!pBegin.IsSame(pEnd))
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return Standard_False;
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Standard_Real wFirst, wLast;
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BRep_Tool::Range(theEdge, theFace, wFirst, wLast);
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// calculation of the length of the edge in 3D
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Standard_Real longueur = 0.0;
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Standard_Real du = (wLast - wFirst) * 0.05;
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gp_Pnt P1, P2;
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BRepAdaptor_Curve BC(theEdge);
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BC.D0(wFirst, P1);
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Standard_Real tolV = BRep_Tool::Tolerance(pBegin);
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Standard_Real tolV2 = 1.2 * tolV;
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for (Standard_Integer l = 1; l <= 20; ++l)
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{
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BC.D0(wFirst + l * du, P2);
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longueur += P1.Distance(P2);
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if (longueur > tolV2)
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break;
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P1 = P2;
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}
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if (longueur < tolV2)
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return Standard_True;
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return Standard_False;
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}
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