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8013367c92
New topology-preserving offset algorithm has been added. It allows to construct offset shape of build solid. test cases have been added. Documentation has been updated to be up to date. Minor corrections. Grid is renamed for simplification purposes. Old constructors are restored with Standard_DEPRECATED macros.
147 lines
5.3 KiB
C++
147 lines
5.3 KiB
C++
// Created on: 1996-02-13
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// Created by: Yves FRICAUD
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// Copyright (c) 1996-1999 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 <BRepOffset_MakeOffset.hxx>
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#include <BRepOffsetAPI_MakeThickSolid.hxx>
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#include <Standard_ConstructionError.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Shape.hxx>
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#include <TopTools_ListIteratorOfListOfShape.hxx>
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//=======================================================================
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//function : BRepOffsetAPI_MakeThickSolid
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//purpose :
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//=======================================================================
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BRepOffsetAPI_MakeThickSolid::BRepOffsetAPI_MakeThickSolid()
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{
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// Build only solids.
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mySimpleOffsetShape.SetBuildSolidFlag(Standard_True);
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}
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//=======================================================================
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//function : BRepOffsetAPI_MakeThickSolid
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//purpose :
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//=======================================================================
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BRepOffsetAPI_MakeThickSolid::BRepOffsetAPI_MakeThickSolid(const TopoDS_Shape& S,
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const TopTools_ListOfShape& ClosingFaces,
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const Standard_Real Offset,
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const Standard_Real Tol,
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const BRepOffset_Mode Mode,
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const Standard_Boolean Intersection,
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const Standard_Boolean SelfInter,
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const GeomAbs_JoinType Join,
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const Standard_Boolean RemoveIntEdges)
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{
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// Build only solids.
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mySimpleOffsetShape.SetBuildSolidFlag(Standard_True);
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MakeThickSolidByJoin(S, ClosingFaces, Offset, Tol,
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Mode, Intersection, SelfInter, Join, RemoveIntEdges);
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}
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//=======================================================================
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//function : MakeThickSolidByJoin
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeThickSolid::MakeThickSolidByJoin
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(const TopoDS_Shape& S,
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const TopTools_ListOfShape& ClosingFaces,
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const Standard_Real Offset,
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const Standard_Real Tol,
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const BRepOffset_Mode Mode,
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const Standard_Boolean Intersection,
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const Standard_Boolean SelfInter,
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const GeomAbs_JoinType Join,
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const Standard_Boolean RemoveIntEdges)
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{
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NotDone();
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myLastUsedAlgo = OffsetAlgo_JOIN;
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myOffsetShape.Initialize (S,Offset,Tol,Mode,Intersection,SelfInter,
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Join, Standard_False, RemoveIntEdges);
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TopTools_ListIteratorOfListOfShape it(ClosingFaces);
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for (; it.More(); it.Next())
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myOffsetShape.AddFace(TopoDS::Face(it.Value()));
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myOffsetShape.MakeThickSolid();
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if (!myOffsetShape.IsDone())
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return;
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myShape = myOffsetShape.Shape();
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Done();
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}
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//=======================================================================
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//function : MakeThickSolidBySimple
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeThickSolid::MakeThickSolidBySimple(const TopoDS_Shape& theS,
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const Standard_Real theOffsetValue)
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{
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NotDone();
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myLastUsedAlgo = OffsetAlgo_SIMPLE;
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mySimpleOffsetShape.Initialize(theS, theOffsetValue);
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mySimpleOffsetShape.Perform();
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if (!mySimpleOffsetShape.IsDone())
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return;
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myShape = mySimpleOffsetShape.GetResultShape();
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Done();
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}
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//=======================================================================
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//function : Build
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeThickSolid::Build()
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{
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}
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//=======================================================================
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//function : Modified
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//purpose :
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//=======================================================================
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const TopTools_ListOfShape& BRepOffsetAPI_MakeThickSolid::Modified (const TopoDS_Shape& F)
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{
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myGenerated.Clear();
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if (myLastUsedAlgo == OffsetAlgo_JOIN && myOffsetShape.OffsetFacesFromShapes().HasImage(F))
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{
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if (myOffsetShape.ClosingFaces().Contains(F))
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{
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myOffsetShape.OffsetFacesFromShapes().LastImage (F, myGenerated);
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// Reverse generated shapes in case of small solids.
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// Useful only for faces without influence on others.
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TopTools_ListIteratorOfListOfShape it(myGenerated);
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for (; it.More(); it.Next())
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it.Value().Reverse();
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}
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}
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else if (myLastUsedAlgo == OffsetAlgo_SIMPLE)
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{
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TopoDS_Shape aModShape = mySimpleOffsetShape.Modified(F);
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if (!aModShape.IsNull())
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myGenerated.Append(aModShape);
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}
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return myGenerated;
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}
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