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cec41bb93d
Support of reading and writing tessellated geometry is added for the following STEP entities: - triangulated face - complex triangulated face - tessellated shell - tessellated solid - tessellated shape representation Models without BRep geometry (mesh formats like STL, OBJ and so on) are supported for writing to STEP. New parameters are added to enable/disable tessellated geometry reading and writing: - read.step.tessellated (On/Off/OnNoBRep) (On by default) - write.step.tessellated (On/Off/OnNoBRep) (OnNoBRep by default) OnNoBRep - tessellation is read/written only for entities for which there is no BRep representation. Faces with poly triangulation are written in STEP as triangulated face entities with one coordinates list per face. Only one poly triangulation per face (returned by BRep_Tool::Triangulation) is written to STEP.
187 lines
7.6 KiB
C++
187 lines
7.6 KiB
C++
// Created on: 1993-07-23
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// Created by: Martine LANGLOIS
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// Copyright (c) 1993-1999 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 <BRepClass3d.hxx>
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#include <Message_ProgressScope.hxx>
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#include <MoniTool_DataMapOfShapeTransient.hxx>
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#include <StdFail_NotDone.hxx>
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#include <StepShape_ClosedShell.hxx>
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#include <StepShape_FacetedBrepAndBrepWithVoids.hxx>
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#include <StepShape_HArray1OfOrientedClosedShell.hxx>
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#include <StepShape_OrientedClosedShell.hxx>
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#include <StepShape_TopologicalRepresentationItem.hxx>
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#include <StepVisual_HArray1OfTessellatedStructuredItem.hxx>
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#include <StepVisual_TessellatedShell.hxx>
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#include <StepVisual_TessellatedSolid.hxx>
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#include <TCollection_HAsciiString.hxx>
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#include <TColStd_SequenceOfTransient.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Iterator.hxx>
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#include <TopoDS_Shell.hxx>
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#include <TopoDS_Solid.hxx>
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#include <TopoDSToStep.hxx>
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#include <TopoDSToStep_Builder.hxx>
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#include <TopoDSToStep_MakeFacetedBrepAndBrepWithVoids.hxx>
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#include <TopoDSToStep_Tool.hxx>
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#include <Transfer_FinderProcess.hxx>
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#include <TransferBRep_ShapeMapper.hxx>
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//=============================================================================
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// Create a FacetedBrepAndBrepWithVoids of StepShape from a Solid of TopoDS
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// containing more than one closed shell
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//=============================================================================
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TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::
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TopoDSToStep_MakeFacetedBrepAndBrepWithVoids(const TopoDS_Solid& aSolid,
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const Handle(Transfer_FinderProcess)& FP,
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const Message_ProgressRange& theProgress)
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{
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done = Standard_False;
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TopoDS_Iterator It;
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MoniTool_DataMapOfShapeTransient aMap;
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TColStd_SequenceOfTransient S;
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TopoDS_Shell aOutShell;
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Handle(StepShape_TopologicalRepresentationItem) aItem;
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Handle(StepShape_ClosedShell) aOuter, aCShell;
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Handle(StepShape_OrientedClosedShell) aOCShell;
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Handle(StepShape_HArray1OfOrientedClosedShell) aVoids;
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TColStd_SequenceOfTransient aTessShells;
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aOutShell = BRepClass3d::OuterShell(aSolid);
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TopoDSToStep_Builder StepB;
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TopoDSToStep_Tool aTool;
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if (!aOutShell.IsNull()) {
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Standard_Integer nbshapes = 0;
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for (It.Initialize(aSolid); It.More(); It.Next())
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if (It.Value().ShapeType() == TopAbs_SHELL)
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nbshapes++;
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Message_ProgressScope aPS(theProgress, NULL, nbshapes);
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for (It.Initialize(aSolid); It.More() && aPS.More(); It.Next())
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{
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if (It.Value().ShapeType() == TopAbs_SHELL) {
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Message_ProgressRange aRange = aPS.Next();
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TopoDS_Shell CurrentShell = TopoDS::Shell(It.Value());
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if (It.Value().Closed()) {
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aTool.Init(aMap, Standard_False);
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StepB.Init(CurrentShell, aTool, FP, Standard_False, aRange);
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TopoDSToStep::AddResult(FP, aTool);
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if (StepB.IsDone()) {
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aCShell = Handle(StepShape_ClosedShell)::DownCast(StepB.Value());
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if (aOutShell.IsEqual(It.Value()))
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aOuter = aCShell;
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else
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S.Append(aCShell);
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Handle(StepVisual_TessellatedItem) aTessShell = StepB.TessellatedValue();
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if (!aTessShell.IsNull())
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{
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aTessShells.Append(aTessShell);
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}
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}
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else {
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Handle(TransferBRep_ShapeMapper) errShape =
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new TransferBRep_ShapeMapper(CurrentShell);
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FP->AddWarning(errShape, " Shell from Solid not mapped to FacetedBrepAndBrepWithVoids");
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}
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}
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else {
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done = Standard_False;
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Handle(TransferBRep_ShapeMapper) errShape =
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new TransferBRep_ShapeMapper(CurrentShell);
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FP->AddWarning(errShape, " Shell from Solid not closed; not mapped to FacetedBrepAndBrepWithVoids");
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}
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}
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}
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if (!aPS.More())
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return;
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}
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Standard_Integer N = S.Length();
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if ( N>=1 ) {
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aVoids = new StepShape_HArray1OfOrientedClosedShell(1,N);
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Handle(TCollection_HAsciiString) aName =
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new TCollection_HAsciiString("");
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for ( Standard_Integer i=1; i<=N; i++ ) {
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aOCShell = new StepShape_OrientedClosedShell();
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aOCShell->Init(aName, Handle(StepShape_ClosedShell)::DownCast(S.Value(i)),
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Standard_True);
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aVoids->SetValue(i, aOCShell);
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}
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theFacetedBrepAndBrepWithVoids =
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new StepShape_FacetedBrepAndBrepWithVoids();
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theFacetedBrepAndBrepWithVoids->Init(aName, aOuter, aVoids);
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if (!aTessShells.IsEmpty())
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{
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Handle(StepVisual_TessellatedSolid) aTessSolid = new StepVisual_TessellatedSolid();
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Handle(TCollection_HAsciiString) aTessName = new TCollection_HAsciiString("");
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Standard_Integer aNbItems = 0;
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for (TColStd_SequenceOfTransient::Iterator anIt(aTessShells); anIt.More(); anIt.Next())
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{
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Handle(StepVisual_TessellatedShell) aTessShell = Handle(StepVisual_TessellatedShell)::DownCast(anIt.Value());
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aNbItems += aTessShell->NbItems();
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}
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Handle(StepVisual_HArray1OfTessellatedStructuredItem) anItems
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= new StepVisual_HArray1OfTessellatedStructuredItem(1, aNbItems);
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for (TColStd_SequenceOfTransient::Iterator anIt(aTessShells); anIt.More(); anIt.Next())
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{
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Handle(StepVisual_TessellatedShell) aTessShell = Handle(StepVisual_TessellatedShell)::DownCast(anIt.Value());
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for (Standard_Integer i = 1; i <= aTessShell->NbItems(); ++i)
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{
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anItems->SetValue(i, aTessShell->ItemsValue(i));
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}
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}
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Standard_Boolean aHasGeomLink = !theFacetedBrepAndBrepWithVoids.IsNull();
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aTessSolid->Init(aTessName, anItems, aHasGeomLink, theFacetedBrepAndBrepWithVoids);
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theTessellatedItem = aTessSolid;
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}
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done = Standard_True;
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}
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else {
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done = Standard_False;
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Handle(TransferBRep_ShapeMapper) errShape =
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new TransferBRep_ShapeMapper(aSolid);
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FP->AddWarning(errShape," Solid contains no Shell to be mapped to FacetedBrepAndBrepWithVoids");
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}
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}
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//=============================================================================
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// renvoi des valeurs
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//=============================================================================
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const Handle(StepShape_FacetedBrepAndBrepWithVoids) &
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TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::Value() const
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{
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StdFail_NotDone_Raise_if (!done, "TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::Value() - no result");
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return theFacetedBrepAndBrepWithVoids;
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}
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// ============================================================================
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// Method : TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::TessellatedValue
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// Purpose : Returns TessellatedItem as the optional result
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// ============================================================================
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const Handle(StepVisual_TessellatedItem)&
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TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::TessellatedValue() const
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{
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StdFail_NotDone_Raise_if(!done, "TopoDSToStep_MakeFacetedBrepAndBrepWithVoids::TessellatedValue() - no result");
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return theTessellatedItem;
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}
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