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https://git.dev.opencascade.org/repos/occt.git
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58e14d59e7
Various improvements in point-solid classifier: 1) Refactoring. 2) BndBoxTree is extracted into separate class. 3) UB-tree calculation is cashed to improve point-solid classification speed. 4) Ray / curve intersection improved by trimmed parameters and correct order. 5) Fixes in logic. 6) Calculation caching at the classifier level. 3D-claasifier now takes into the account the vertex/edges tolerances. If the given point lays inside the tolerance area of vertex or edge of the solid it's classified as TopAbs_ON. The behavior of IntCurvesFace_Intersector::Perform was changed. Now it may use optional null-tolerance to classify 2d-point relatively to the given face. UBTreeFiller is used to speedup intersection process between edges/vertices and the point. The test case 'boolean gdml_private ZH2' extensively uses the SolidClassifier. After this fix it returns the correct classification statuses, which leads to incorrect result shape (reported by checkshape). Yet the result shape without this fix also seems to be incorrect (one of the isolines goes out of boundary of the face). Thats why it's marked with 'TODO'. Corrections in test cases. Test case is added.
153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
// Copyright (c) 1994-1999 Matra Datavision
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// Copyright (c) 1999-2016 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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#ifndef _BRepClass3d_BndBoxTree_HeaderFile
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#define _BRepClass3d_BndBoxTree_HeaderFile
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#include <NCollection_Sequence.hxx>
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#include <NCollection_UBTreeFiller.hxx>
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#include <NCollection_UBTree.hxx>
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#include <TopTools_IndexedMapOfShape.hxx>
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#include <BRepBndLib.hxx>
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#include <TopoDS_Edge.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <Geom_Line.hxx>
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#include <Bnd_Box.hxx>
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#include <gp_Lin.hxx>
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#include <GeomAdaptor_Curve.hxx>
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#include <Precision.hxx>
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// Typedef to reduce code complexity.
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typedef NCollection_UBTree <Standard_Integer, Bnd_Box> BRepClass3d_BndBoxTree;
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// Class representing tree selector for point object.
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class BRepClass3d_BndBoxTreeSelectorPoint : public BRepClass3d_BndBoxTree::Selector
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{
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public:
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BRepClass3d_BndBoxTreeSelectorPoint(const TopTools_IndexedMapOfShape& theMapOfShape)
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: BRepClass3d_BndBoxTreeSelectorPoint::Selector(), myMapOfShape (theMapOfShape)
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{}
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Standard_Boolean Reject (const Bnd_Box& theBox) const
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{
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return (theBox.IsOut (myP));
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}
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Standard_Boolean Accept (const Standard_Integer& theObj);
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// Sets current point for boxes-point collisions.
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void SetCurrentPoint (const gp_Pnt& theP)
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{
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myP = theP;
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}
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private:
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BRepClass3d_BndBoxTreeSelectorPoint(const BRepClass3d_BndBoxTreeSelectorPoint& );
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BRepClass3d_BndBoxTreeSelectorPoint& operator=(const BRepClass3d_BndBoxTreeSelectorPoint& );
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private:
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const TopTools_IndexedMapOfShape& myMapOfShape; //shapes (vertices + edges)
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gp_Pnt myP;
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};
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// Class representing tree selector for line object.
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class BRepClass3d_BndBoxTreeSelectorLine : public BRepClass3d_BndBoxTree::Selector
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{
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public:
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struct EdgeParam
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{
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TopoDS_Edge myE;
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Standard_Real myParam; //par on myE
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Standard_Real myLParam; //par on line
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};
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struct VertParam
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{
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TopoDS_Vertex myV;
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Standard_Real myLParam; //par on line
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};
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public:
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BRepClass3d_BndBoxTreeSelectorLine(const TopTools_IndexedMapOfShape& theMapOfShape)
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: BRepClass3d_BndBoxTreeSelectorLine::Selector(), myMapOfShape (theMapOfShape)
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{}
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Standard_Boolean Reject (const Bnd_Box& theBox) const
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{
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return (theBox.IsOut (myL));
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}
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Standard_Boolean Accept (const Standard_Integer& theObj);
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//Sets current line for boxes-line collisions
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void SetCurrentLine (const gp_Lin& theL,
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const Standard_Real theMaxParam)
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{
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myL = theL;
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myLC.Load(new Geom_Line(theL), -Precision::PConfusion(), theMaxParam);
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}
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void GetEdgeParam(const Standard_Integer i,
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TopoDS_Edge& theOutE,
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Standard_Real &theOutParam,
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Standard_Real &outLParam ) const
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{
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const EdgeParam& EP = myEP.Value(i);
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theOutE = EP.myE;
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theOutParam = EP.myParam;
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outLParam = EP.myLParam;
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}
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void GetVertParam(const Standard_Integer i,
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TopoDS_Vertex& theOutV,
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Standard_Real &outLParam ) const
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{
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const VertParam& VP = myVP.Value(i);
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theOutV = VP.myV;
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outLParam = VP.myLParam;
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}
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Standard_Integer GetNbEdgeParam() const
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{
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return myEP.Length();
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}
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Standard_Integer GetNbVertParam() const
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{
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return myVP.Length();
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}
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void ClearResults()
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{
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myEP.Clear();
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myVP.Clear();
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}
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private:
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BRepClass3d_BndBoxTreeSelectorLine(const BRepClass3d_BndBoxTreeSelectorLine& );
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BRepClass3d_BndBoxTreeSelectorLine& operator=(const BRepClass3d_BndBoxTreeSelectorLine& );
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private:
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const TopTools_IndexedMapOfShape& myMapOfShape; //shapes (vertices + edges)
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gp_Lin myL;
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NCollection_Sequence<EdgeParam> myEP; //output result (edge vs line)
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NCollection_Sequence<VertParam> myVP; //output result (vertex vs line)
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GeomAdaptor_Curve myLC;
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};
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#endif
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