mirror of
https://git.dev.opencascade.org/repos/occt.git
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5647b46a34
Reorganizing structure to have Module/TK/Package/FILES structure. New structure reflect the structure inside IDE. Migrate FILES, PACKAGES, EXTRLIB to CMake version to handle changes on updates. No changes were done to installation layout, all installation result keep as before. The migration was done using python script, see PR, which refactor automatically the structure. Updated doc generation to have valid path to modules, toolkits and packages. In case of PR into new version, IR-790 can be used as a target for the previous version.
134 lines
4.5 KiB
C++
134 lines
4.5 KiB
C++
// 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 <StlAPI_Writer.hxx>
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#include <Bnd_Box.hxx>
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#include <Message.hxx>
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#include <OSD_OpenFile.hxx>
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#include <RWStl.hxx>
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#include <BRep_Tool.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopExp_Explorer.hxx>
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#include <Poly_Triangulation.hxx>
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//=================================================================================================
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StlAPI_Writer::StlAPI_Writer()
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: myASCIIMode(Standard_True)
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{
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//
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}
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//=================================================================================================
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Standard_Boolean StlAPI_Writer::Write(const TopoDS_Shape& theShape,
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const Standard_CString theFileName,
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const Message_ProgressRange& theProgress)
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{
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Standard_Integer aNbNodes = 0;
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Standard_Integer aNbTriangles = 0;
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// calculate total number of the nodes and triangles
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for (TopExp_Explorer anExpSF(theShape, TopAbs_FACE); anExpSF.More(); anExpSF.Next())
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{
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TopLoc_Location aLoc;
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Handle(Poly_Triangulation) aTriangulation =
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BRep_Tool::Triangulation(TopoDS::Face(anExpSF.Current()), aLoc);
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if (!aTriangulation.IsNull())
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{
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aNbNodes += aTriangulation->NbNodes();
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aNbTriangles += aTriangulation->NbTriangles();
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}
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}
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if (aNbTriangles == 0)
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{
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// No triangulation on the shape
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return Standard_False;
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}
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// create temporary triangulation
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Handle(Poly_Triangulation) aMesh = new Poly_Triangulation(aNbNodes, aNbTriangles, Standard_False);
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// count faces missing triangulation
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Standard_Integer aNbFacesNoTri = 0;
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// fill temporary triangulation
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Standard_Integer aNodeOffset = 0;
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Standard_Integer aTriangleOffet = 0;
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for (TopExp_Explorer anExpSF(theShape, TopAbs_FACE); anExpSF.More(); anExpSF.Next())
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{
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const TopoDS_Shape& aFace = anExpSF.Current();
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TopLoc_Location aLoc;
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Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation(TopoDS::Face(aFace), aLoc);
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if (aTriangulation.IsNull())
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{
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++aNbFacesNoTri;
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continue;
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}
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// copy nodes
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gp_Trsf aTrsf = aLoc.Transformation();
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for (Standard_Integer aNodeIter = 1; aNodeIter <= aTriangulation->NbNodes(); ++aNodeIter)
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{
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gp_Pnt aPnt = aTriangulation->Node(aNodeIter);
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aPnt.Transform(aTrsf);
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aMesh->SetNode(aNodeIter + aNodeOffset, aPnt);
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}
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// copy triangles
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const TopAbs_Orientation anOrientation = anExpSF.Current().Orientation();
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for (Standard_Integer aTriIter = 1; aTriIter <= aTriangulation->NbTriangles(); ++aTriIter)
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{
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Poly_Triangle aTri = aTriangulation->Triangle(aTriIter);
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Standard_Integer anId[3];
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aTri.Get(anId[0], anId[1], anId[2]);
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if (anOrientation == TopAbs_REVERSED)
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{
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// Swap 1, 2.
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Standard_Integer aTmpIdx = anId[1];
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anId[1] = anId[2];
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anId[2] = aTmpIdx;
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}
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// Update nodes according to the offset.
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anId[0] += aNodeOffset;
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anId[1] += aNodeOffset;
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anId[2] += aNodeOffset;
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aTri.Set(anId[0], anId[1], anId[2]);
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aMesh->SetTriangle(aTriIter + aTriangleOffet, aTri);
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}
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aNodeOffset += aTriangulation->NbNodes();
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aTriangleOffet += aTriangulation->NbTriangles();
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}
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OSD_Path aPath(theFileName);
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Standard_Boolean isDone = (myASCIIMode ? RWStl::WriteAscii(aMesh, aPath, theProgress)
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: RWStl::WriteBinary(aMesh, aPath, theProgress));
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if (isDone && (aNbFacesNoTri > 0))
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{
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// Print warning with number of faces missing triangulation
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TCollection_AsciiString aWarningMsg =
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TCollection_AsciiString("Warning: ") + TCollection_AsciiString(aNbFacesNoTri)
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+ TCollection_AsciiString((aNbFacesNoTri == 1) ? " face has" : " faces have")
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+ TCollection_AsciiString(" been skipped due to null triangulation");
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Message::SendWarning(aWarningMsg);
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}
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return isDone;
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}
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