--- /dev/null
+// Created on: 2016-07-04
+// Copyright (c) 2016 OPEN CASCADE SAS
+// Created by: Oleg AGASHIN
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#include <BRepMesh_ModelPostProcessor.hxx>
+#include <BRepMesh_ShapeTool.hxx>
+#include <IMeshData_Model.hxx>
+#include <IMeshData_Edge.hxx>
+#include <IMeshData_PCurve.hxx>
+#include <OSD_Parallel.hxx>
+
+namespace
+{
+ //! Commits 3D polygons and polygons on triangulations for corresponding edges.
+ class PolygonCommitter
+ {
+ public:
+ //! Constructor
+ PolygonCommitter(const Handle(IMeshData_Model)& theModel)
+ : myModel(theModel)
+ {
+ }
+
+ //! Main functor.
+ void operator()(const Standard_Integer theEdgeIndex) const
+ {
+ const IMeshData::IEdgeHandle& aDEdge = myModel->GetEdge(theEdgeIndex);
+ if (aDEdge->IsFree())
+ {
+ if (!aDEdge->IsSet(IMeshData_Reused))
+ {
+ commitPolygon3D(aDEdge);
+ }
+ }
+ else
+ {
+ commitPolygons(aDEdge);
+ }
+ }
+
+ private:
+
+ //! Commits 3d polygon to topological edge
+ void commitPolygon3D(const IMeshData::IEdgeHandle& theDEdge) const
+ {
+ const IMeshData::ICurveHandle& aCurve = theDEdge->GetCurve();
+
+ TColgp_Array1OfPnt aNodes (1, aCurve->ParametersNb());
+ TColStd_Array1OfReal aUVNodes(1, aCurve->ParametersNb());
+ for (Standard_Integer i = 1; i <= aCurve->ParametersNb(); ++i)
+ {
+ aNodes (i) = aCurve->GetPoint (i - 1);
+ aUVNodes(i) = aCurve->GetParameter(i - 1);
+ }
+
+ Handle(Poly_Polygon3D) aPoly3D = new Poly_Polygon3D(aNodes, aUVNodes);
+ aPoly3D->Deflection(theDEdge->GetDeflection());
+
+ BRepMesh_ShapeTool::UpdateEdge(theDEdge->GetEdge(), aPoly3D);
+ }
+
+ //! Commits all polygons on triangulations correspondent to the given edge.
+ void commitPolygons(const IMeshData::IEdgeHandle& theDEdge) const
+ {
+ // Collect pcurves associated with the given edge on the specific surface.
+ IMeshData::IDMapOfIFacePtrsListOfIPCurves aMapOfPCurves;
+ for (Standard_Integer aPCurveIt = 0; aPCurveIt < theDEdge->PCurvesNb(); ++aPCurveIt)
+ {
+ const IMeshData::IPCurveHandle& aPCurve = theDEdge->GetPCurve(aPCurveIt);
+ const IMeshData::IFacePtr& aDFacePtr = aPCurve->GetFace();
+ const IMeshData::IFaceHandle aDFace = aDFacePtr;
+ if (aDFace->IsSet(IMeshData_Failure) ||
+ aDFace->IsSet(IMeshData_Reused))
+ {
+ continue;
+ }
+
+ if (!aMapOfPCurves.Contains(aDFacePtr))
+ {
+ aMapOfPCurves.Add(aDFacePtr, IMeshData::ListOfIPCurves());
+ }
+
+ IMeshData::ListOfIPCurves& aPCurves = aMapOfPCurves.ChangeFromKey(aDFacePtr);
+ aPCurves.Append(aPCurve);
+ }
+
+ // Commit polygons related to separate face.
+ const TopoDS_Edge& aEdge = theDEdge->GetEdge();
+ IMeshData::IDMapOfIFacePtrsListOfIPCurves::Iterator aPolygonIt(aMapOfPCurves);
+ for (; aPolygonIt.More(); aPolygonIt.Next())
+ {
+ const TopoDS_Face& aFace = aPolygonIt.Key()->GetFace();
+
+ TopLoc_Location aLoc;
+ const Handle(Poly_Triangulation)& aTriangulation =
+ BRep_Tool::Triangulation(aFace, aLoc);
+
+ if (!aTriangulation.IsNull())
+ {
+ const IMeshData::ListOfIPCurves& aPCurves = aPolygonIt.Value();
+ if (aPCurves.Size() == 2)
+ {
+ BRepMesh_ShapeTool::UpdateEdge(
+ aEdge,
+ collectPolygon(aPCurves.First(), theDEdge->GetDeflection()),
+ collectPolygon(aPCurves.Last (), theDEdge->GetDeflection()),
+ aTriangulation, aLoc);
+ }
+ else
+ {
+ BRepMesh_ShapeTool::UpdateEdge(
+ aEdge,
+ collectPolygon(aPCurves.First(), theDEdge->GetDeflection()),
+ aTriangulation, aLoc);
+ }
+ }
+ }
+ }
+
+ //! Collects polygonal data for the given pcurve
+ Handle(Poly_PolygonOnTriangulation) collectPolygon(
+ const IMeshData::IPCurveHandle& thePCurve,
+ const Standard_Real theDeflection) const
+ {
+ TColStd_Array1OfInteger aNodes (1, thePCurve->ParametersNb());
+ TColStd_Array1OfReal aParams(1, thePCurve->ParametersNb());
+ for (Standard_Integer i = 1; i <= thePCurve->ParametersNb(); ++i)
+ {
+ aNodes (i) = thePCurve->GetIndex (i - 1);
+ aParams(i) = thePCurve->GetParameter(i - 1);
+ }
+
+ Handle(Poly_PolygonOnTriangulation) aPolygon =
+ new Poly_PolygonOnTriangulation(aNodes, aParams);
+
+ aPolygon->Deflection(theDeflection);
+ return aPolygon;
+ }
+
+ private:
+
+ Handle(IMeshData_Model) myModel;
+ };
+}
+
+//=======================================================================
+// Function: Constructor
+// Purpose :
+//=======================================================================
+BRepMesh_ModelPostProcessor::BRepMesh_ModelPostProcessor()
+{
+}
+
+//=======================================================================
+// Function: Destructor
+// Purpose :
+//=======================================================================
+BRepMesh_ModelPostProcessor::~BRepMesh_ModelPostProcessor()
+{
+}
+
+//=======================================================================
+// Function: Perform
+// Purpose :
+//=======================================================================
+Standard_Boolean BRepMesh_ModelPostProcessor::Perform(
+ const Handle(IMeshData_Model)& theModel,
+ const IMeshTools_Parameters& /*theParameters*/)
+{
+ if (theModel.IsNull())
+ {
+ return Standard_False;
+ }
+
+ // TODO: Force single threaded solution due to data races on edges sharing the same TShape
+ OSD_Parallel::For(0, theModel->EdgesNb(), PolygonCommitter(theModel), Standard_True/*!theParameters.InParallel*/);
+ return Standard_True;
+}
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