0030024: Data Exchange - STEP, IGES export support of BRep shapes based on tessellated geometry

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.
2026-05-11 10:10:56 +08:00 · 2022-04-04 18:08:34 +03:00
parent e9c43fee29
commit cec41bb93d
128 changed files with 9920 additions and 403 deletions
--- a/src/StepVisual/StepVisual_ComplexTriangulatedSurfaceSet.cxx
+++ b/src/StepVisual/StepVisual_ComplexTriangulatedSurfaceSet.cxx
@@ -0,0 +1,167 @@
+// Created on : Thu Mar 24 18:30:11 2022 
+// Created by: snn
+// Generator: Express (EXPRESS -> CASCADE/XSTEP Translator) V2.0
+// Copyright (c) Open CASCADE 2022
+//
+// 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 <StepVisual_ComplexTriangulatedSurfaceSet.hxx>
+
+IMPLEMENT_STANDARD_RTTIEXT(StepVisual_ComplexTriangulatedSurfaceSet, StepVisual_TessellatedSurfaceSet)
+
+//=======================================================================
+//function : StepVisual_ComplexTriangulatedSurfaceSet
+//purpose  : 
+//=======================================================================
+
+StepVisual_ComplexTriangulatedSurfaceSet::StepVisual_ComplexTriangulatedSurfaceSet ()
+{
+}
+
+//=======================================================================
+//function : Init
+//purpose  : 
+//=======================================================================
+
+void StepVisual_ComplexTriangulatedSurfaceSet::Init (const Handle(TCollection_HAsciiString)& theRepresentationItem_Name,
+                                                     const Handle(StepVisual_CoordinatesList)& theTessellatedSurfaceSet_Coordinates,
+                                                     const Standard_Integer theTessellatedSurfaceSet_Pnmax,
+                                                     const Handle(TColStd_HArray2OfReal)& theTessellatedSurfaceSet_Normals,
+                                                     const Handle(TColStd_HArray1OfInteger)& thePnindex,
+                                                     const Handle(TColStd_HArray2OfInteger)& theTriangleStrips,
+                                                     const Handle(TColStd_HArray2OfInteger)& theTriangleFans)
+{
+  StepVisual_TessellatedSurfaceSet::Init(theRepresentationItem_Name,
+                                         theTessellatedSurfaceSet_Coordinates,
+                                         theTessellatedSurfaceSet_Pnmax,
+                                         theTessellatedSurfaceSet_Normals);
+
+  myPnindex = thePnindex;
+
+  myTriangleStrips = theTriangleStrips;
+
+  myTriangleFans = theTriangleFans;
+}
+
+//=======================================================================
+//function : Pnindex
+//purpose  : 
+//=======================================================================
+
+Handle(TColStd_HArray1OfInteger) StepVisual_ComplexTriangulatedSurfaceSet::Pnindex () const
+{
+  return myPnindex;
+}
+
+//=======================================================================
+//function : SetPnindex
+//purpose  : 
+//=======================================================================
+
+void StepVisual_ComplexTriangulatedSurfaceSet::SetPnindex(const Handle(TColStd_HArray1OfInteger)& thePnindex)
+{
+  myPnindex = thePnindex;
+}
+
+
+//=======================================================================
+//function : NbPnindex
+//purpose  : 
+//=======================================================================
+
+Standard_Integer StepVisual_ComplexTriangulatedSurfaceSet::NbPnindex() const
+{
+  if (myPnindex.IsNull())
+  {
+    return 0;
+  }
+  return myPnindex->Length();
+}
+
+
+//=======================================================================
+//function : PnindexValue
+//purpose  : 
+//=======================================================================
+
+Standard_Integer StepVisual_ComplexTriangulatedSurfaceSet::PnindexValue(const Standard_Integer theNum) const
+{
+  return myPnindex->Value(theNum);
+}
+
+//=======================================================================
+//function : TriangleStrips
+//purpose  : 
+//=======================================================================
+
+Handle(TColStd_HArray2OfInteger) StepVisual_ComplexTriangulatedSurfaceSet::TriangleStrips () const
+{
+  return myTriangleStrips;
+}
+
+//=======================================================================
+//function : SetTriangleStrips
+//purpose  : 
+//=======================================================================
+
+void StepVisual_ComplexTriangulatedSurfaceSet::SetTriangleStrips(const Handle(TColStd_HArray2OfInteger)& theTriangleStrips)
+{
+  myTriangleStrips = theTriangleStrips;
+}
+
+//=======================================================================
+//function : NbTriangleStrips
+//purpose  : 
+//=======================================================================
+
+Standard_Integer StepVisual_ComplexTriangulatedSurfaceSet::NbTriangleStrips() const
+{
+  if (myTriangleStrips.IsNull())
+  {
+    return 0;
+  }
+  return myTriangleStrips->ColLength();
+}
+
+//=======================================================================
+//function : TriangleFans
+//purpose  : 
+//=======================================================================
+
+Handle(TColStd_HArray2OfInteger) StepVisual_ComplexTriangulatedSurfaceSet::TriangleFans () const
+{
+  return myTriangleFans;
+}
+
+//=======================================================================
+//function : SetTriangleFans
+//purpose  : 
+//=======================================================================
+
+void StepVisual_ComplexTriangulatedSurfaceSet::SetTriangleFans(const Handle(TColStd_HArray2OfInteger)& theTriangleFans)
+{
+  myTriangleFans = theTriangleFans;
+}
+
+//=======================================================================
+//function : NbTriangleFans
+//purpose  : 
+//=======================================================================
+
+Standard_Integer StepVisual_ComplexTriangulatedSurfaceSet::NbTriangleFans() const
+{
+  if (myTriangleFans.IsNull())
+  {
+    return 0;
+  }
+  return myTriangleFans->ColLength();
+}