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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
374 lines
11 KiB
C++
374 lines
11 KiB
C++
// Created on: 1995-09-18
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// Created by: Bruno DUMORTIER
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// Copyright (c) 1995-1999 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 <BRepOffsetAPI_MakeOffset.ixx>
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#include <BRepBuilderAPI_MakeFace.hxx>
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#include <BRep_Builder.hxx>
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#include <BRep_Tool.hxx>
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#include <BRepAlgo_FaceRestrictor.hxx>
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#include <Extrema_ExtPS.hxx>
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#include <BRepAdaptor_Surface.hxx>
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#include <BRepFill_OffsetWire.hxx>
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#include <BRepFill_ListIteratorOfListOfOffsetWire.hxx>
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#include <BRepTopAdaptor_FClass2d.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Pnt.hxx>
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#include <Precision.hxx>
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#include <TopTools_ListIteratorOfListOfShape.hxx>
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#include <TopExp_Explorer.hxx>
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#include <TopExp.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopoDS_Compound.hxx>
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#include <TopoDS_Wire.hxx>
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#include <StdFail_NotDone.hxx>
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//=======================================================================
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//function : BRepOffsetAPI_MakeOffset
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//purpose :
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//=======================================================================
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BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset()
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:myIsInitialized( Standard_False)
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{
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}
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//=======================================================================
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//function : BRepOffsetAPI_MakeOffset
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//purpose :
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//=======================================================================
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BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset(const TopoDS_Face& Spine,
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const GeomAbs_JoinType Join)
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{
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Init(Spine, Join);
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeOffset::Init(const TopoDS_Face& Spine,
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const GeomAbs_JoinType Join)
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{
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myFace = Spine;
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myIsInitialized = Standard_True;
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myJoin = Join;
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TopExp_Explorer exp;
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for (exp.Init(myFace,TopAbs_WIRE); exp.More();exp.Next()) {
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myWires.Append(exp.Current());
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}
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}
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//=======================================================================
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//function : BRepOffsetAPI_MakeOffset
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//purpose :
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//=======================================================================
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BRepOffsetAPI_MakeOffset::BRepOffsetAPI_MakeOffset(const TopoDS_Wire& Spine,
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const GeomAbs_JoinType Join)
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{
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myWires.Append(Spine);
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myIsInitialized = Standard_True;
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myJoin = Join;
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeOffset::Init(const GeomAbs_JoinType Join)
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{
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myJoin = Join;
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}
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//=======================================================================
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//function : BRepOffsetAPI_MakeOffset
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeOffset::AddWire(const TopoDS_Wire& Spine)
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{
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myIsInitialized = Standard_True;
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myWires.Append(Spine);
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}
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//=======================================================================
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//function : BuildDomain
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//purpose :
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//=======================================================================
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static void BuildDomains(TopoDS_Face& myFace,
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TopTools_ListOfShape& WorkWires,
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BRepFill_ListOfOffsetWire& myAlgos,
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GeomAbs_JoinType myJoin,
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Standard_Boolean isPositive)
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{
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BRepAlgo_FaceRestrictor FR;
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TopoDS_Vertex VF,VL;
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TopTools_ListOfShape LOW;
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BRep_Builder B;
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if (myFace.IsNull()) {
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myFace = BRepBuilderAPI_MakeFace(TopoDS::Wire(WorkWires.First()),Standard_True);
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if (myFace.IsNull())
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StdFail_NotDone::Raise ("BRepOffsetAPI_MakeOffset : the wire is not planar");
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}
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// Modified by Sergey KHROMOV - Thu Apr 26 16:04:43 2001 Begin
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TopExp_Explorer anExp(myFace, TopAbs_WIRE);
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TopoDS_Shape aWire1 = WorkWires.First();
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TopoDS_Shape aWire2;
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if (anExp.More()) {
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aWire2 = anExp.Current();
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if ((aWire1.Orientation() == aWire2.Orientation() && isPositive) ||
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(aWire1.Orientation() == TopAbs::Complement(aWire2.Orientation()) && !isPositive)) {
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TopTools_ListOfShape LWires;
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TopTools_ListIteratorOfListOfShape itl;
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for (itl.Initialize(WorkWires); itl.More(); itl.Next()) {
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const TopoDS_Shape& W = itl.Value();
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LWires.Append(W.Reversed());
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}
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WorkWires = LWires;
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}
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}
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// Modified by Sergey KHROMOV - Thu Apr 26 16:04:44 2001 End
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FR.Init(myFace,Standard_True);
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//====================================================
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// Construction of faces limited by closed wires.
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//====================================================
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TopTools_ListIteratorOfListOfShape itl(WorkWires);
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for (; itl.More(); itl.Next()) {
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TopoDS_Wire& W = TopoDS::Wire(itl.Value());
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if (W.Closed()){
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FR.Add(W);
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continue;
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}
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TopExp::Vertices (W,VF,VL);
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if (VF.IsSame(VL)) {
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FR.Add(W);
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}
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else {
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LOW.Append(W);
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}
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}
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FR.Perform();
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if (!FR.IsDone()) {
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StdFail_NotDone::Raise ("BRepOffsetAPI_MakeOffset : Build Domains");
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}
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TopTools_ListOfShape Faces;
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for (; FR.More(); FR.Next()) {
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Faces.Append(FR.Current());
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}
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//===========================================
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// No closed wire => only one domain
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//===========================================
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if (Faces.IsEmpty()) {
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TopoDS_Shape aLocalShape = myFace.EmptyCopied();
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TopoDS_Face F = TopoDS::Face(aLocalShape);
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// TopoDS_Face F = TopoDS::Face(myFace.EmptyCopied());
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TopTools_ListIteratorOfListOfShape itW(LOW);
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for ( ; itW.More(); itW.Next()) {
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B.Add(F,itW.Value());
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}
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BRepFill_OffsetWire Algo(F, myJoin);
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myAlgos.Append(Algo);
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return;
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}
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//====================================================
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// Classification of open wires.
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//====================================================
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// for (TopTools_ListIteratorOfListOfShape itF(Faces); itF.More(); itF.Next()) {
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TopTools_ListIteratorOfListOfShape itF;
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for (itF.Initialize(Faces) ; itF.More(); itF.Next()) {
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TopoDS_Face& F = TopoDS::Face(itF.Value());
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BRepAdaptor_Surface S(F,0);
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Standard_Real Tol = BRep_Tool::Tolerance(F);
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BRepTopAdaptor_FClass2d CL(F,Precision::Confusion());
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TopTools_ListIteratorOfListOfShape itW(LOW);
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while (itW.More()) {
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TopoDS_Wire& W = TopoDS::Wire(itW.Value());
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//=======================================================
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// Choice of a point on the wire. + projection on the face.
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//=======================================================
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TopExp_Explorer exp(W,TopAbs_VERTEX);
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TopoDS_Vertex V = TopoDS::Vertex(exp.Current());
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gp_Pnt2d PV;
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gp_Pnt P3d = BRep_Tool::Pnt(V);
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Extrema_ExtPS ExtPS (P3d,S,Tol,Tol);
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Standard_Real Dist2Min = Precision::Infinite();
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Standard_Real Found = Standard_False;
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for (Standard_Integer ie = 1; ie <= ExtPS.NbExt(); ie++) {
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Standard_Real X,Y;
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if (ExtPS.SquareDistance(ie) < Dist2Min) {
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Dist2Min = ExtPS.SquareDistance(ie);
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Found = Standard_True;
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ExtPS.Point(ie).Parameter(X,Y);
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PV.SetCoord(X,Y);
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}
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}
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if ( Found && (CL.Perform(PV) == TopAbs_IN)) {
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// The face that contains a wire is found and it is removed from the list
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B.Add(F,W);
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LOW.Remove(itW);
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}
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else {
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itW.Next();
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}
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}
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}
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//========================================
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// Creation of algorithms on each domain.
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//========================================
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for (itF.Initialize(Faces); itF.More(); itF.Next()) {
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BRepFill_OffsetWire Algo(TopoDS::Face(itF.Value()), myJoin);
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myAlgos.Append(Algo);
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}
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}
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//=======================================================================
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//function : Perform
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//purpose :
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//=======================================================================
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void BRepOffsetAPI_MakeOffset::Perform( const Standard_Real Offset,
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const Standard_Real Alt)
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{
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StdFail_NotDone_Raise_if ( !myIsInitialized,
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"BRepOffsetAPI_MakeOffset : Perform without Init");
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try
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{
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Standard_Integer i = 1;
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BRepFill_ListIteratorOfListOfOffsetWire itOW;
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TopoDS_Compound Res;
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BRep_Builder B;
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B.MakeCompound (Res);
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myLastIsLeft = (Offset <= 0);
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if( Offset <= 0. )
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{
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if( myLeft.IsEmpty() )
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{
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// Modified by Sergey KHROMOV - Fri Apr 27 14:35:26 2001 Begin
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BuildDomains(myFace,myWires,myLeft,myJoin, Standard_False);
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// Modified by Sergey KHROMOV - Fri Apr 27 14:35:26 2001 End
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}
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for (itOW.Initialize(myLeft); itOW.More(); itOW.Next())
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{
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BRepFill_OffsetWire& Algo = itOW.Value();
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Algo.Perform(Abs(Offset),Alt);
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if (Algo.IsDone() && !Algo.Shape().IsNull())
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{
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B.Add(Res,Algo.Shape());
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if (i == 1)
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myShape = Algo.Shape();
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i++;
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}
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}
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}
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else
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{
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if (myRight.IsEmpty())
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{
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// Modified by Sergey KHROMOV - Fri Apr 27 14:35:28 2001 Begin
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BuildDomains(myFace,myWires,myRight,myJoin, Standard_True);
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// Modified by Sergey KHROMOV - Fri Apr 27 14:35:35 2001 End
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}
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for(itOW.Initialize(myRight); itOW.More(); itOW.Next())
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{
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BRepFill_OffsetWire& Algo = itOW.Value();
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Algo.Perform(Offset,Alt);
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if (Algo.IsDone() && !Algo.Shape().IsNull())
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{
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B.Add(Res,Algo.Shape());
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if (i == 1)
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myShape = Algo.Shape();
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i++;
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}
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}
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}
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if( i > 2 )
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myShape = Res;
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if(myShape.IsNull())
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NotDone();
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else
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Done();
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}
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catch(...) //Every exception was caught.
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{
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cout<<"An exception was caught in BRepOffsetAPI_MakeOffset::Perform : ";
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Standard_ConstructionError::Caught()->Print(cout);
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cout<<endl;
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NotDone();
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myShape.Nullify();
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}
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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_MakeOffset::Build()
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{
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Done();
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}
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//=======================================================================
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//function : ShapesFromShape
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//purpose :
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//=======================================================================
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const TopTools_ListOfShape& BRepOffsetAPI_MakeOffset::Generated
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(const TopoDS_Shape& S)
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{
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myGenerated.Clear();
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BRepFill_ListIteratorOfListOfOffsetWire itOW;
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BRepFill_ListOfOffsetWire* Algos;
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Algos= &myLeft;
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if (!myLastIsLeft) {
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Algos = &myRight;
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}
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for (itOW.Initialize(*Algos); itOW.More(); itOW.Next()) {
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BRepFill_OffsetWire& OW = itOW.Value();
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TopTools_ListOfShape L;
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L = OW.GeneratedShapes(S.Oriented(TopAbs_FORWARD));
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myGenerated.Append(L);
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L = OW.GeneratedShapes(S.Oriented(TopAbs_REVERSED));
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myGenerated.Append(L);
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}
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return myGenerated;
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}
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