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netgen/libsrc/occ/Partition_Spliter.cxx
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#ifdef OCCGEOMETRY
// GEOM PARTITION : partition algorithm
//
// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
//
//
//
// File : Partition_Spliter.cxx
// Author : Benedicte MARTIN
// Module : GEOM
// $Header: /cvs/netgen/netgen/libsrc/occ/Partition_Spliter.cxx,v 1.7 2008/03/31 14:20:28 wabro Exp $
//using namespace std;
#include <climits>
#include "Partition_Inter2d.hxx"
#include "Partition_Inter3d.hxx"
#include "Partition_Loop2d.hxx"
#include "Partition_Loop3d.hxx"
#include "Partition_Spliter.ixx"
#include "utilities.h"
#include <Precision.hxx>
#include <TopAbs_Orientation.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
#include <TopTools_DataMapOfShapeListOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_MapIteratorOfMapOfShape.hxx>
#include <TopTools_SequenceOfShape.hxx>
#include <Geom2d_Curve.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Surface.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Vec.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS_Shell.hxx>
#include <TopoDS_Solid.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepBndLib.hxx>
#include <BRepClass3d_SolidClassifier.hxx>
#include <BRepLib.hxx>
#include <BRep_Tool.hxx>
#include <Extrema_ExtPC.hxx>
#include <GeomAdaptor_Curve.hxx>
#include <TopOpeBRepTool_CurveTool.hxx>
#ifdef DEB
//# define PART_PERF
#endif
#ifdef PART_PERF
# include <OSD_Chronometer.hxx>
#endif
//=======================================================================
//function : isClosed
//purpose : check id a shape is closed, ie is a solid or a closed shell
//=======================================================================
static Standard_Boolean isClosed(const TopoDS_Shape& theShape)
{
Standard_Boolean isClosed = (theShape.ShapeType() == TopAbs_SOLID);
if (!isClosed && theShape.ShapeType() == TopAbs_SHELL) {
TopTools_IndexedDataMapOfShapeListOfShape MEF;
TopExp::MapShapesAndAncestors(theShape, TopAbs_EDGE, TopAbs_FACE, MEF);
for (Standard_Integer i=1; isClosed && i<=MEF.Extent(); ++i)
isClosed = ( MEF(i).Extent() != 1 );
}
return isClosed;
}
//=======================================================================
//function : Partition_Spliter
//purpose : constructor
//=======================================================================
Partition_Spliter::Partition_Spliter()
{
myAsDes = new BRepAlgo_AsDes;
Clear();
}
//=======================================================================
//function : AddTool
//purpose : add cutting tool that will _NOT_ be in result
//=======================================================================
void Partition_Spliter::AddTool(const TopoDS_Shape& S)
{
if (S.ShapeType() < TopAbs_SOLID) { // compound or compsolid
TopoDS_Iterator it (S);
for (; it.More(); it.Next())
{
AddTool( it.Value());
myFaceShapeMap.Bind( it.Value(), S ); // to know compound by shape
}
return;
}
for (TopExp_Explorer exp(S,TopAbs_FACE); exp.More(); exp.Next())
{
myMapTools.Add(exp.Current());
myFaceShapeMap.Bind( exp.Current(), S );
}
if (isClosed( S ))
myClosedShapes.Add( S );
}
//=======================================================================
//function : AddShape
//purpose : add object Shape to be splited
//=======================================================================
void Partition_Spliter::AddShape(const TopoDS_Shape& S)
{
if (S.ShapeType() < TopAbs_SOLID) { // compound or compsolid
TopoDS_Iterator it (S);
for (; it.More(); it.Next())
{
AddShape( it.Value());
myFaceShapeMap.Bind( it.Value(), S ); // to know compound by shape
}
return;
}
TopExp_Explorer exp(S,TopAbs_FACE);
if (!exp.More()) { // do not split edges and vertices
//myBuilder.Add( myShape, S );
return;
}
Standard_Integer nbFacesBefore = myMapFaces.Extent(); // not to add twice the same S
for (; exp.More(); exp.Next()) {
const TopoDS_Shape & aFace = exp.Current();
if ( ! myFaceShapeMap.IsBound( aFace )) // keep shape of tool face added as object
myFaceShapeMap.Bind( aFace, S );
if (myMapFaces.Add( aFace ))
myImagesFaces.SetRoot( aFace );
}
if (nbFacesBefore == myMapFaces.Extent())
return;
// solids must be processed before all
if (S.ShapeType() == TopAbs_SOLID)
myListShapes.Prepend(S);
else
myListShapes.Append(S);
if (isClosed( S ))
myClosedShapes.Add( S );
}
//=======================================================================
//function : Shape
//purpose : return resulting compound
//=======================================================================
TopoDS_Shape Partition_Spliter::Shape() const
{
return myShape;
}
//=======================================================================
//function : Clear
//purpose : clear fields
//=======================================================================
void Partition_Spliter::Clear()
{
myDoneStep = TopAbs_SHAPE;
myListShapes.Clear();
myMapFaces.Clear();
myMapTools.Clear();
myEqualEdges.Clear();
myNewSection.Clear();
myClosedShapes.Clear();
mySharedFaces.Clear();
myWrappingSolid.Clear();
myFaceShapeMap.Clear();
myInternalFaces.Clear();
myIntNotClFaces.Clear();
myAsDes->Clear();
myImagesFaces.Clear();
myImagesEdges.Clear();
myImageShape.Clear();
// myInter3d = Partition_Inter3d(myAsDes);
Partition_Inter3d hinter3d (myAsDes);
myInter3d = hinter3d;
myAddedFacesMap.Clear();
}
//=======================================================================
//function : Compute
//purpose : produce a result
//=======================================================================
void Partition_Spliter::Compute(const TopAbs_ShapeEnum Limit)
{
if ((Limit != TopAbs_SHAPE && myDoneStep == Limit) ||
(Limit == TopAbs_SHAPE && myDoneStep == TopAbs_SOLID))
return;
myBuilder.MakeCompound( myShape );
TopTools_MapIteratorOfMapOfShape it;
TopTools_ListIteratorOfListOfShape itl;
TopExp_Explorer exp;
#ifdef PART_PERF
OSD_Chronometer aCron;
#endif
if (myDoneStep > TopAbs_VERTEX) {
TopTools_ListOfShape aListFaces;
aListFaces = myImagesFaces.Roots();
for (it.Initialize(myMapTools); it.More(); it.Next())
aListFaces.Append(it.Key());
#ifdef PART_PERF
aCron.Start();
#endif
//-----------------------------------------------
// Intersection between faces
//-----------------------------------------------
// result is in myAsDes as a map Face - list of new edges;
// special care is done for section edges, same domain faces and vertices:
// data about them is inside myInter3d
myInter3d.CompletPart3d(aListFaces, myFaceShapeMap);
#ifdef PART_PERF
MESSAGE("+++ CompletPart3d()");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
//-----------------------------------------------
// Intersection of edges
//-----------------------------------------------
// add tool faces which must be reconstructed to myMapFaces too
FindToolsToReconstruct();
#ifdef PART_PERF
MESSAGE("+++ FindToolsToReconstruct()");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
// add existing vertices to edges of object faces in myAsDes
TopTools_MapOfShape DoneEM;
for ( it.Initialize(myMapFaces); it.More(); it.Next()) {
const TopoDS_Shape& F = it.Key();
TopoDS_Face FForward = TopoDS::Face(F.Oriented(TopAbs_FORWARD));
for (exp.Init(FForward,TopAbs_EDGE); exp.More(); exp.Next()) {
const TopoDS_Edge& E = TopoDS::Edge( exp.Current() );
myAsDes->Add(FForward,E);
if (DoneEM.Add(E)) {
TopoDS_Iterator itV(E);
for (; itV.More(); itV.Next()) {
const TopoDS_Vertex& V = TopoDS::Vertex( itV.Value());
myAsDes->Add(E, myInter3d.ReplaceSameDomainV( V, E ));
}
}
}
}
// intersect edges that are descendants of a face in myAsDes
TopTools_MapOfShape& Modif = myInter3d.TouchedFaces();
for ( it.Initialize(Modif); it.More(); it.Next()) {
const TopoDS_Face& F = TopoDS::Face(it.Key());
Partition_Inter2d::CompletPart2d (myAsDes, F, myInter3d.NewEdges());
}
// now myAsDes contains also new vertices made at edge intersection as
// descendant of edges both new and old
myDoneStep = TopAbs_VERTEX;
#ifdef PART_PERF
MESSAGE("+++ CompletPart2d()");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
} // if (myDoneStep > TopAbs_VERTEX)
if (Limit == TopAbs_VERTEX) {
// add new vertices to myShape
for ( it.Initialize( myInter3d.NewEdges() ); it.More(); it.Next()) {
if (! myAsDes->HasDescendant( it.Key() ))
continue;
itl.Initialize( myAsDes->Descendant( it.Key() ));
for (; itl.More(); itl.Next())
myBuilder.Add ( myShape, itl.Value() );
}
return;
}
if (myDoneStep > TopAbs_EDGE) {
//-----------------------------------------------
//-----------------------------------------------
// ------- Reconstruction of all the edges.------
//-----------------------------------------------
//-----------------------------------------------
// ==============
// cut new edges
// ==============
TopTools_ListOfShape LSE; // all edge splits
for ( it.Initialize(myInter3d.NewEdges()); it.More(); it.Next()) {
TopoDS_Vertex V1,V2;
TopoDS_Edge EE = TopoDS::Edge(it.Key());
TopTools_ListOfShape aListV, aListF;
aListV = myAsDes->Descendant(EE); // intersection vertices
aListF = myAsDes->Ascendant(EE); // intersected faces
if (aListV.IsEmpty())
continue; // new edge does not intersect any other edge
// Add end vertices to new edges only if
// one face is Tool and the other is Shape
Standard_Boolean isTool1 = ! myMapFaces.Contains( aListF.First() );
Standard_Boolean isTool2 = ! myMapFaces.Contains( aListF.Last() );
if (isTool1 || isTool2)
{
TopExp::Vertices(EE,V1,V2);
Standard_Real Tol = Max (BRep_Tool::Tolerance( V1 ),
BRep_Tool::Tolerance( V2 ));
gp_Pnt P1 = BRep_Tool::Pnt(V1);
gp_Pnt P2 = BRep_Tool::Pnt(V2);
Standard_Boolean AddV1 = Standard_True;
Standard_Boolean AddV2 = Standard_True;
// add only if there is no intersection at end vertex
for (itl.Initialize(aListV); itl.More(); itl.Next()) {
const TopoDS_Vertex& Ve = TopoDS::Vertex(itl.Value()) ;
Standard_Real Tol2 = Max ( Tol, BRep_Tool::Tolerance( Ve ));
Tol2 *= Tol2;
gp_Pnt P = BRep_Tool::Pnt(Ve);
if (AddV1 && P.SquareDistance(P1) <= Tol2)
AddV1 = Standard_False;
if (AddV2 && P.SquareDistance(P2) <= Tol2)
AddV2 = Standard_False;
}
if (AddV1) {
aListV.Append(V1);
myAsDes->Add(EE,V1);
}
if (AddV2) {
aListV.Append(V2);
myAsDes->Add(EE,V2);
}
}
// cut new edges
Standard_Integer NbV=aListV.Extent() ;
if (NbV>1 || (NbV==1 && V1.IsSame(V2)) ) {
TopTools_ListOfShape LNE;
MakeEdges (EE,aListV, LNE);
myImagesEdges.Bind(EE,LNE);
LSE.Append( LNE );
}
}
// ==============
// cut old edges
// ==============
for ( it.Initialize(myMapFaces); it.More(); it.Next()) {
for (exp.Init( it.Key(), TopAbs_EDGE); exp.More(); exp.Next()) {
const TopoDS_Edge& EE = TopoDS::Edge( exp.Current() );
if ( myImagesEdges.HasImage( EE ))
continue;
TopTools_ListOfShape LNE;
const TopTools_ListOfShape& aListVV = myAsDes->Descendant(EE);
MakeEdges (EE, aListVV, LNE);
myImagesEdges.Bind(EE,LNE);
LSE.Append( LNE );
}
}
#ifdef PART_PERF
MESSAGE("+++ Cut Edges");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
// process same domain section edges
MergeEqualEdges( LSE );
myDoneStep = TopAbs_EDGE;
#ifdef PART_PERF
MESSAGE("+++ MergeEqualEdges()");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
} // if (myDoneStep > TopAbs_EDGE)
if (Limit == TopAbs_EDGE) {
// add splits of old edges
TopTools_ListIteratorOfListOfShape itNE;
for (itl.Initialize( myListShapes );itl.More();itl.Next()) {
if (myMapTools.Contains( itl.Value() ))
continue; // skip tool faces
for ( exp.Init( itl.Value(), TopAbs_EDGE ); exp.More(); exp.Next()) {
itNE.Initialize( myImagesEdges.Image( exp.Current() ));
for ( ; itNE.More(); itNE.Next())
myBuilder.Add ( myShape, itNE.Value() );
}
}
// add splits of new edges
for ( it.Initialize( myInter3d.NewEdges() ); it.More(); it.Next()) {
itNE.Initialize( myImagesEdges.Image( it.Key() ));
for (; itNE.More(); itNE.Next())
myBuilder.Add ( myShape, itNE.Value() );
}
return;
}
//-----------------------------------------------
// split faces
//-----------------------------------------------
if (myDoneStep > TopAbs_FACE) {
for (itl.Initialize(myListShapes);itl.More();itl.Next()) {
TopoDS_Shape FacesComp = MakeFaces ( itl.Value());
// there is a cunning here: myImagesFaces keeps faces made by Loop2d
// but some of them may be replaced with splits of same domain face
// and myImageShape keeps ultimate result
myImageShape.Bind( itl.Value(), FacesComp );
}
myDoneStep = TopAbs_FACE;
#ifdef PART_PERF
MESSAGE("+++ MakeFaces()");
aCron.Show( cout );
aCron.Reset();
aCron.Start();
#endif
}
if (Limit == TopAbs_WIRE ||
Limit == TopAbs_FACE) {
for (itl.Initialize(myListShapes);itl.More();itl.Next()) {
if ( myMapTools.Contains( itl.Value() ))
continue; // no result needed for a tool face
const TopoDS_Shape& FacesComp = myImageShape.Image( itl.Value() ).First();
for ( exp.Init( FacesComp, Limit); exp.More(); exp.Next())
myBuilder.Add ( myShape, exp.Current());
}
return;
}
//-----------------------------------------------
// split and add solids and shells
//-----------------------------------------------
Standard_Boolean makeSolids = (Limit == TopAbs_SHAPE ||
Limit < TopAbs_SHELL);
for (itl.Initialize(myListShapes);itl.More();itl.Next())
{
const TopoDS_Shape & S = itl.Value();
if (S.ShapeType() > TopAbs_SHELL)
continue;
TopTools_ListOfShape NSL; // new shape list
MakeShells (S , NSL);
if (makeSolids && S.ShapeType() == TopAbs_SOLID )
MakeSolids( S, NSL );
// store new shells or solids
TopTools_ListIteratorOfListOfShape itNSL (NSL);
for ( ; itNSL.More(); itNSL.Next())
myBuilder.Add (myShape, itNSL.Value());
}
#ifdef PART_PERF
MESSAGE("+++ MakeShells()");
aCron.Show( cout );
#endif
//-----------------------------------------------
// add split faces
//-----------------------------------------------
for (itl.Initialize(myListShapes);itl.More();itl.Next())
{
const TopoDS_Shape & S = itl.Value();
if (S.ShapeType() != TopAbs_FACE ||
myMapTools.Contains( S ))
continue;
TopoDS_Iterator itS( myImageShape.Image(S).First() );
for (; itS.More(); itS.Next())
if (! myAddedFacesMap.Contains( itS.Value() ))
myBuilder.Add (myShape, itS.Value());
}
myDoneStep = makeSolids ? TopAbs_SOLID : TopAbs_SHELL;
}
//=======================================================================
//function : MakeSolids
//purpose : make solids out of Shells
//=======================================================================
void Partition_Spliter::MakeSolids(const TopoDS_Shape & theSolid,
TopTools_ListOfShape & theShellList)
{
// for a solid wrapping other shells or solids without intersection,
// it is necessary to find shells making holes in it
TopTools_ListOfShape aNewSolids; // result
TopTools_ListOfShape aHoleShells;
TopoDS_Shape anInfinitePointShape;
Standard_Boolean isWrapping = myWrappingSolid.Contains( theSolid );
if (!isWrapping && !theShellList.IsEmpty())
{
// check if theSolid initially has internal shells
TopoDS_Iterator aShellExp (theSolid);
aShellExp.Next();
isWrapping = aShellExp.More();
}
TopTools_ListIteratorOfListOfShape aShellIt(theShellList);
for ( ; aShellIt.More(); aShellIt.Next())
{
const TopoDS_Shape & aShell = aShellIt.Value();
// check if a shell is a hole
if (isWrapping && IsInside (anInfinitePointShape, aShell))
aHoleShells.Append( aShell );
else
{
// make a solid from a shell
TopoDS_Solid Solid;
myBuilder.MakeSolid( Solid );
myBuilder.Add (Solid, aShell);
aNewSolids.Append (Solid);
}
}
// find an outer shell most close to each hole shell
TopTools_DataMapOfShapeShape aInOutMap;
for (aShellIt.Initialize( aHoleShells ); aShellIt.More(); aShellIt.Next())
{
const TopoDS_Shape & aHole = aShellIt.Value();
TopTools_ListIteratorOfListOfShape aSolisIt (aNewSolids);
for ( ; aSolisIt.More(); aSolisIt.Next())
{
const TopoDS_Shape & aSolid = aSolisIt.Value();
if (! IsInside( aHole, aSolid ))
continue;
if ( aInOutMap.IsBound (aHole))
{
const TopoDS_Shape & aSolid2 = aInOutMap( aHole );
if ( IsInside( aSolid, aSolid2 ))
{
aInOutMap.UnBind( aHole );
aInOutMap.Bind ( aHole, aSolid );
}
}
else
aInOutMap.Bind ( aHole, aSolid );
}
// add aHole to a solid
if (aInOutMap.IsBound( aHole ))
myBuilder.Add ( aInOutMap( aHole ), aHole );
}
theShellList.Clear();
theShellList.Append( aNewSolids );
}
//=======================================================================
//function : FindFacesInside
//purpose : return compound of faces of other shapes that are
// inside <theShape>.
// <theShape> is an object shape.
// <CheckClosed> makes avoid faces that do not form a
// closed shell
// <All> makes return already added faces
//=======================================================================
TopoDS_Shape Partition_Spliter::FindFacesInside(const TopoDS_Shape& theShape,
const Standard_Boolean CheckClosed,
const Standard_Boolean All)
{
// ================================================
// check if internal faces have been already found
// ================================================
TopExp_Explorer expl;
if (myInternalFaces.IsBound( theShape ))
{
TopoDS_Shape aIntFComp = myInternalFaces.Find ( theShape );
TopoDS_Shape aIntRemFComp = myIntNotClFaces.Find ( theShape );
expl.Init( aIntRemFComp, TopAbs_FACE);
if (CheckClosed || !expl.More())
return aIntFComp;
TopoDS_Compound C;
myBuilder.MakeCompound( C );
// add removed faces
for (; expl.More(); expl.Next())
myBuilder.Add( C, expl.Current() );
// add good internal faces
for (expl.Init( aIntFComp, TopAbs_FACE); expl.More(); expl.Next())
myBuilder.Add( C, expl.Current() );
return C;
}
// ===================================
// get data for internal faces search
// ===================================
// compound of split faces of theShape
const TopoDS_Shape& CSF = myImageShape.Image(theShape).First();
TopTools_MapOfShape MSE, MFP;
TopTools_DataMapOfShapeListOfShape DMSEFP;
TopTools_MapIteratorOfMapOfShape itm;
TopTools_ListOfShape EmptyL;
// MSE filling: map of new section edges of CSF
for (expl.Init(CSF,TopAbs_EDGE); expl.More(); expl.Next()) {
const TopoDS_Shape & resE = expl.Current() ;
if (myNewSection.Contains( resE )) // only new edges
MSE.Add(resE);
}
// DMEF: map edge of CSF - faces of CSF
TopTools_IndexedDataMapOfShapeListOfShape DMEF;
TopExp::MapShapesAndAncestors(CSF, TopAbs_EDGE, TopAbs_FACE, DMEF);
// Fill
// 1. MFP - a map of faces to process: map of resulting faces except
// those of theShape; we`ll add to C those of them which are inside CSF
// 2. DMSEFP - edge of MSE => faces of MFP
TopTools_ListIteratorOfListOfShape itl;
for (itl.Initialize(myListShapes);itl.More();itl.Next()) {
const TopoDS_Shape& aShape = itl.Value();
if ( theShape.IsSame( aShape )) continue;
// fill maps
// iterate on split faces of aShape
TopoDS_Iterator itF ( myImageShape.Image(aShape).First() );
for ( ; itF.More(); itF.Next()) {
const TopoDS_Shape& sf = itF.Value();
MFP.Add(sf);
// iterate on edges of split faces of aShape,
// add to DMSEFP edges that are new
for (expl.Init( sf, TopAbs_EDGE ); expl.More(); expl.Next()) {
TopoDS_Shape se = expl.Current();
if ( MSE.Contains(se)) {// section edge
if (!DMSEFP.IsBound(se))
DMSEFP.Bind(se,EmptyL);
DMSEFP(se).Append(sf);
}
}
}
}
// add tool faces having section edges on faces of theShape to MFP and DMSEFP;
// such tool faces need not to be reconstructed and so they are not in myListShapes
for (itm.Initialize(myMapTools); itm.More(); itm.Next())
{
const TopoDS_Shape & aToolFace = itm.Key();
if (myMapFaces.Contains( aToolFace ))
continue;
MFP.Add(aToolFace);
for (expl.Init( aToolFace, TopAbs_EDGE ); expl.More(); expl.Next()) {
TopoDS_Shape se = expl.Current();
if ( MSE.Contains( se )) {// section edge
if (!DMSEFP.IsBound( se ))
DMSEFP.Bind( se, EmptyL );
DMSEFP( se ).Append( aToolFace );
}
}
}
// ===========================
// find faces inside theShape
// ===========================
Standard_Boolean skipAlreadyAdded = Standard_False;
Standard_Boolean GoodOri, inside;
Standard_Real dot;
TopTools_ListOfShape KeepFaces;
TopTools_DataMapIteratorOfDataMapOfShapeListOfShape Mapit;
// iterate on section edges, check faces of other shapes
// sharing section edges and put internal faces to KeepFaces
for (Mapit.Initialize(DMSEFP); Mapit.More() ; Mapit.Next() ) {
// a new edge of theShape
const TopoDS_Edge& E = TopoDS::Edge (Mapit.Key());
// an original edge of which E is a split
const TopoDS_Edge& OrigE = TopoDS::Edge ( myImagesEdges.Root( E ));
// does OrigE itself splits a face
Standard_Boolean isSectionE = myInter3d.IsSectionEdge ( OrigE );
// split faces of other shapes sharing E
TopTools_ListOfShape& LSF = DMSEFP.ChangeFind(E);
itl.Initialize( LSF );
while (itl.More()) {
// a split faces of other shape
TopoDS_Face aFace1 = TopoDS::Face(itl.Value());
// remove aFace1 form DMSEFP and MFP
LSF.Remove( itl ); // == itl.Next();
if (!MFP.Remove( aFace1 ))
continue; // was not is MFP ( i.e already checked)
// check if aFace1 was already added to 2 shells
if (!All &&
myAddedFacesMap.Contains( aFace1 ) &&
myAddedFacesMap.Contains( aFace1.Reversed() )) {
skipAlreadyAdded = Standard_True;
continue;
}
// find another face which originates from the same face as aFace1:
// usually aFace2 is internal if aFace1 is not and vice versa
TopoDS_Shape anOrigFace = aFace1;
if (myImagesFaces.IsImage(aFace1))
anOrigFace = myImagesFaces.Root(aFace1);
TopoDS_Shape aFace2;
if ( !isSectionE ) {
while (itl.More()) {
aFace2 = itl.Value();
if (!MFP.Contains( aFace2 )) {
LSF.Remove( itl );
continue;
}
if (anOrigFace.IsSame( myImagesFaces.Root( aFace2 )))
break;
itl.Next();
}
if (itl.More()) { // aFace2 found, remove it from maps
LSF.Remove( itl );
MFP.Remove(aFace2);
}
else
aFace2.Nullify();
itl.Initialize( LSF );
}
// check that anOrigFace is not same domain with CSF faces it intersects
const TopTools_ListOfShape& FL = DMEF.FindFromKey(E); //faces of CSF sharing E
const TopoDS_Shape& origF1 = myImagesFaces.Root(FL.First());
const TopoDS_Shape& origF2 = myImagesFaces.Root(FL.Last());
Standard_Boolean sameDom1 = anOrigFace.IsSame( origF1 );
Standard_Boolean sameDom2 = anOrigFace.IsSame( origF2 );
if (!(sameDom1 || sameDom2) && myInter3d.HasSameDomainF( anOrigFace )) {
sameDom1 = myInter3d.IsSameDomainF( anOrigFace, origF1);
if (origF1 == origF2)
sameDom2 = sameDom1;
else
myInter3d.IsSameDomainF( anOrigFace, origF2);
}
if (sameDom1 && sameDom2)
continue;
if ((sameDom1 || sameDom2)) {
inside = Partition_Loop3d::IsInside (E,
TopoDS::Face(FL.First()),
TopoDS::Face(FL.Last()),
1, dot, GoodOri);
if (inside || (dot + Precision::Angular() >= 1.0))
continue; // E is convex between origF1 and origF2 or they are tangent
}
// keep one of found faces
//face of CSF sharing E
const TopoDS_Shape& aShapeFace = sameDom1 ? FL.Last() : FL.First();
// analyse aFace1 state
inside = Partition_Loop3d::IsInside (E, TopoDS::Face(aShapeFace), aFace1,
1, dot, GoodOri);
if (inside && isSectionE)
{
// aFace1 must be tested with both adjacent faces of CSF
const TopoDS_Shape& aShapeFace2 = sameDom1 ? FL.First() : FL.Last();
if (aShapeFace2 != aShapeFace)
inside = Partition_Loop3d::IsInside (E, TopoDS::Face(aShapeFace2), aFace1,
1, dot, GoodOri);
}
// store internal face
if (inside)
KeepFaces.Append(aFace1);
else if (!aFace2.IsNull())
{
if (dot + Precision::Angular() >= 1.0)
{
// aFace2 state is not clear, it will be analysed alone,
// put it back to the maps
MFP.Add( aFace2 );
LSF.Append( aFace2 );
}
else
KeepFaces.Append(aFace2);
}
}
}
// ===================================================
// add not distributed faces connected with KeepFaces
// ===================================================
// ultimate list of internal faces
TopTools_ListOfShape KeptFaces;
// add to MFP unsplit tool faces as well, they may be connected with
// tool faces interfering with theShape
for ( itm.Initialize(myMapTools); itm.More(); itm.Next() ) {
const TopoDS_Shape& aToolFace = itm.Key();
if (!myImageShape.HasImage(aToolFace))
MFP.Add (aToolFace);
}
if (MFP.IsEmpty())
KeptFaces.Append (KeepFaces);
while (!KeepFaces.IsEmpty())
{
// KeepEdges : map of edges of faces kept last time
TopTools_IndexedMapOfShape KeepEdges;
for ( itl.Initialize(KeepFaces); itl.More(); itl.Next() ) {
TopExp::MapShapes( itl.Value(), TopAbs_EDGE, KeepEdges);
KeptFaces.Append( itl.Value() );
}
KeepFaces.Clear();
// keep faces connected with already kept faces by KeepEdges
for ( itm.Initialize(MFP); itm.More(); itm.Next() ) {
const TopoDS_Shape& FP = itm.Key();
for (expl.Init(FP,TopAbs_EDGE); expl.More(); expl.Next()) {
const TopoDS_Shape& se = expl.Current();
if (!MSE.Contains(se) && KeepEdges.Contains(se) ) {
KeepFaces.Append(FP);
MFP.Remove(FP);
break;
}
}
}
}
// ===============================================================
// here MFP contains faces outer of theShape and those of shapes
// which do not interfere with theShape at all and between which
// there may be those wrapped by theShape and whose faces may be
// needed to be returned as well
// ===============================================================
Standard_Boolean isSolid = (theShape.ShapeType() == TopAbs_SOLID);
if (All || isSolid) // All is for sub-result removal
{
// loop on not used faces; checked faces will be removed from MFP
// during the loop
for ( itm.Initialize( MFP ); itm.More(); itm.Next() ) {
const TopoDS_Shape & aFace = itm.Key();
// a shape which aFace originates from
TopoDS_Shape anOrigShape = GetOriginalShape( aFace );
// find out if all split faces of anOrigShape are not in MFP
// and by the way remove them from MFP
Standard_Boolean isAllOut = Standard_True;
TopoDS_Shape aSplitFaces = anOrigShape;
if (myImageShape.HasImage(anOrigShape))
aSplitFaces = myImageShape.Image(anOrigShape).First();
TopTools_ListOfShape aSplitFaceL; // faces candidate to be kept
for (expl.Init( aSplitFaces, TopAbs_FACE ); expl.More(); expl.Next())
{
const TopoDS_Shape & aSpFace = expl.Current();
// a tool face which became object has image but the whole tool shape has not
if (myImageShape.HasImage( aSpFace ))
{
TopExp_Explorer exF (myImageShape.Image( aSpFace ).First(), TopAbs_FACE );
for ( ; exF.More(); exF.Next() )
{
aSplitFaceL.Append( exF.Current() );
if ( ! MFP.Remove( exF.Current() ) && isAllOut )
// a shared face might be removed from MFP during a prev loop
isAllOut = mySharedFaces.Contains( exF.Current() );
}
}
else
{
aSplitFaceL.Append( aSpFace );
if ( ! MFP.Remove( aSpFace ) && isAllOut)
// a shared face might be removed from MFP during a prev loop
isAllOut = mySharedFaces.Contains( aSpFace );
}
}
itm.Initialize( MFP ); // iterate remaining faces
if ( !isAllOut )
continue;
// classify anOrigShape against theShape
if (IsInside (anOrigShape, theShape))
{
if (isSolid && myClosedShapes.Contains( anOrigShape ))
// to make a special care at solid reconstruction
myWrappingSolid.Add ( theShape );
// keep faces of an internal shape anOrigShape
KeptFaces.Append( aSplitFaceL );
}
}
}
// ====================================================
// check if kept faces form a shell without free edges
// ====================================================
DMEF.Clear(); // edge - kept faces
MFP.Clear(); // reuse it for wrong faces
if (CheckClosed) {
for (itl.Initialize(KeptFaces); itl.More(); itl.Next() )
TopExp::MapShapesAndAncestors(itl.Value(), TopAbs_EDGE, TopAbs_FACE, DMEF);
Standard_Integer i, nb = DMEF.Extent();
Standard_Boolean isClosed = Standard_False;
while (!isClosed) {
isClosed = Standard_True;
for (i=1; isClosed && i<=nb; ++i) {
const TopoDS_Shape& E = DMEF.FindKey( i );
if (! BRep_Tool::Degenerated( TopoDS::Edge( E )) &&
! MSE.Contains( E ))
isClosed = ( DMEF(i).Extent() != 1 );
}
if (!isClosed) {
const TopoDS_Shape& F = DMEF.FindFromIndex( i-1 ).First(); // bad face
MFP.Add( F );
// remove bad face from DMEF
for (expl.Init( F, TopAbs_EDGE); expl.More(); expl.Next()) {
const TopoDS_Shape& E = expl.Current();
TopTools_ListOfShape& FL = DMEF.ChangeFromKey( E );
for (itl.Initialize( FL ); itl.More(); itl.Next() ) {
if ( F.IsSame( itl.Value() )) {
FL.Remove( itl );
break;
}
}
}
}
}
}
// ==============
// make a result
// ==============
TopoDS_Compound C;
// compound of removed internal faces
TopoDS_Compound CNotCl;
myBuilder.MakeCompound(C);
myBuilder.MakeCompound(CNotCl);
// add to compounds
for (itl.Initialize(KeptFaces); itl.More(); itl.Next() )
{
TopoDS_Shape & aIntFace = itl.Value();
if (! MFP.Contains( aIntFace ))
myBuilder.Add( C, aIntFace);
else
myBuilder.Add( CNotCl, aIntFace);
}
if (!skipAlreadyAdded && CheckClosed)
{
myInternalFaces.Bind( theShape, C );
myIntNotClFaces.Bind( theShape, CNotCl );
}
return C;
}
//=======================================================================
//function : MakeShell
//purpose : split S into compound of shells
//=======================================================================
void Partition_Spliter::MakeShells(const TopoDS_Shape& S,
TopTools_ListOfShape& NS)
{
Partition_Loop3d ShellMaker;
// get compound of split faces of S
const TopoDS_Shape& FacesComp = myImageShape.Image(S).First();
ShellMaker.AddConstFaces( FacesComp );
// add split faces inside S
if (myClosedShapes.Contains( S )) {
TopoDS_Shape InternalFacesComp = FindFacesInside(S, Standard_True);
ShellMaker.AddSectionFaces( InternalFacesComp );
}
NS = ShellMaker.MakeShells( myAddedFacesMap );
// Add faces added to new shell to myAddedFacesMap:
// avoid rebuilding twice common part of 2 solids.
TopTools_ListIteratorOfListOfShape itS(NS);
while ( itS.More()) {
TopExp_Explorer expF (itS.Value(), TopAbs_FACE);
for (; expF.More(); expF.Next())
myAddedFacesMap.Add (expF.Current());
itS.Next();
}
}
//=======================================================================
//function : findEqual
//purpose : compare edges of EL1 against edges of EL2,
// Result is in EMM binding EL1 edges to list of equal edges.
// Edges are considered equal only if they have same vertices.
// <addSame>==True makes consider same edges as equal
// Put in <AllEqMap> all equal edges
//=======================================================================
static void findEqual (const TopTools_ListOfShape& EL1,
const TopTools_ListOfShape& EL2,
const Standard_Boolean addSame,
TopTools_DataMapOfShapeListOfShape& EEM,
TopTools_MapOfShape& AllEqMap)
{
// map vertices to edges for EL2
TopTools_DataMapOfShapeListOfShape VEM;
TopTools_ListIteratorOfListOfShape itE1, itE2(EL2);
TopoDS_Iterator itV;
TopTools_ListOfShape emptyL;
for (; itE2.More(); itE2.Next()) {
for (itV.Initialize( itE2.Value() ); itV.More(); itV.Next()) {
const TopoDS_Shape& V = itV.Value();
if (! VEM.IsBound( V ) )
VEM.Bind( V, emptyL);
VEM( V ).Append( itE2.Value());
}
}
gp_Vec D1, D2;
gp_Pnt P;
Standard_Real f,l,u,tol;
Handle(Geom_Curve) C1, C2;
Extrema_ExtPC Extrema;
TopoDS_Vertex V1, V2, V3, V4;
AllEqMap.Clear();
for (itE1.Initialize(EL1); itE1.More(); itE1.Next()) {
const TopoDS_Edge& E1 = TopoDS::Edge( itE1.Value());
if (BRep_Tool::Degenerated( E1 ) || AllEqMap.Contains (E1))
continue;
TopExp::Vertices( E1, V1, V2 );
if (VEM.IsBound(V1))
itE2.Initialize( VEM(V1) );
for (; itE2.More(); itE2.Next()) {
const TopoDS_Edge& E2 = TopoDS::Edge( itE2.Value());
if (BRep_Tool::Degenerated( E2 ) || AllEqMap.Contains (E2))
continue;
if (E1.IsSame(E2)) {
if (!addSame)
continue;
}
else {
TopExp::Vertices( E2, V3, V4);
if (!V2.IsSame(V4) && !V2.IsSame(V3))
continue;
// E1 and E2 have same vertices
// check D1 at end points.
C2 = BRep_Tool::Curve( E2, f,l);
C1 = BRep_Tool::Curve( E1, f,l);
u = BRep_Tool::Parameter(V1,E1);
C1->D1(u, P, D1);
u = BRep_Tool::Parameter(V1.IsSame(V3) ? V3 : V4, E2);
C2->D1(u, P, D2);
D1.Normalize(); D2.Normalize();
if (Abs(D1*D2) + Precision::Angular() < 1.0)
continue;
if (! V1.IsSame(V2)) {
u = BRep_Tool::Parameter(V2,E1);
C1->D1(u, P, D1);
u = BRep_Tool::Parameter(V2.IsSame(V3) ? V3 : V4, E2);
C2->D1(u, P, D2);
D1.Normalize(); D2.Normalize();
if (Abs(D1*D2) + Precision::Angular() < 1.0)
continue;
}
// check distance at a couple of internal points
tol = Max(BRep_Tool::Tolerance(E1),
BRep_Tool::Tolerance(E2));
GeomAdaptor_Curve AC1(C1);
Extrema.Initialize(AC1,f,l);
Standard_Boolean ok = Standard_True, hasMin = Standard_False;
BRep_Tool::Range( E2, f, l);
Standard_Integer i=1, nbi=3;
for (; i<nbi && ok; ++i) {
Extrema.Perform( C2->Value( f+(l-f)*i/nbi ));
Standard_Integer j=1, nbj=Extrema.NbExt();
for (; j<=nbj && ok; ++j) {
if (Extrema.IsMin(j)) {
hasMin = Standard_True;
// ok = Extrema.Value(j) <= tol; // V6.3
ok = Extrema.SquareDistance(j) <= tol; // V6.5
}
}
}
if ( !hasMin || !ok)
continue;
}
// bind E2 to E1 in EEM
if (!EEM.IsBound(E1)) {
EEM.Bind (E1, emptyL);
AllEqMap.Add (E1);
}
EEM(E1).Append(E2);
AllEqMap.Add (E2);
}
}
}
//=======================================================================
//function : MakeFaces
//purpose : split faces of S, return compound of new faces
//=======================================================================
TopoDS_Shape Partition_Spliter::MakeFaces (const TopoDS_Shape& S)
{
TopoDS_Compound C;
myBuilder.MakeCompound(C);
TopTools_ListIteratorOfListOfShape itl, itNE;
TopExp_Explorer exp(S,TopAbs_FACE);
for (; exp.More(); exp.Next()) {
const TopoDS_Face& F = TopoDS::Face(exp.Current());
TopTools_ListOfShape LNF;
if (myImagesFaces.HasImage( F )) {
myImagesFaces.LastImage( F, LNF );
TopAbs_Orientation oriF = F.Orientation();
for ( itl.Initialize( LNF ); itl.More(); itl.Next())
itl.Value().Orientation( oriF );
}
else {
Partition_Loop2d loops;
loops.Init(F);
TopTools_IndexedMapOfShape EM;
TopExp::MapShapes( F, TopAbs_EDGE, EM);
TopTools_MapOfShape AddedEqualM, EqualSeamM;
Standard_Boolean needRebuild = Standard_False;
// add splits to loops
// LE: old edges + new unsplit edges
const TopTools_ListOfShape& LE = myAsDes->Descendant(F);
for (itl.Initialize(LE); itl.More(); itl.Next()) {
const TopoDS_Edge& E = TopoDS::Edge( itl.Value() );
Standard_Boolean isSectionE = myInter3d.IsSectionEdge(E);
Standard_Boolean isNewE = !EM.Contains( E );
// LSE: list of split edges
TopTools_ListOfShape LSE;
myImagesEdges.LastImage(E,LSE); // splits of E or E itself
for (itNE.Initialize(LSE); itNE.More(); itNE.Next()) {
TopoDS_Edge NE = TopoDS::Edge( itNE.Value() );
Standard_Boolean isSameE = NE.IsSame ( E );
if ( isNewE || isSectionE || !isSameE) {
if (AddedEqualM.Contains( NE )) {
// a seam must be twice in a loop
if (!BRep_Tool::IsClosed( E, F ) || !EqualSeamM.Add( NE ))
continue;
}
if (isNewE) {
if (isSectionE) {
if ( ! myInter3d.IsSplitOn( NE, E, F) )
continue;
}
else {
TopoDS_Vertex V1,V2;
TopExp::Vertices(NE,V1,V2);
const TopTools_ListOfShape& EL1 = myAsDes->Ascendant(V1);
const TopTools_ListOfShape& EL2 = myAsDes->Ascendant(V2);
if ( EL1.Extent() < 2 && EL2.Extent() < 2 )
continue;
}
}
else {
NE.Orientation( E.Orientation());
if (!isSameE) {
// orient NE because it may be a split of other edge
Standard_Real f,l,u;
Handle(Geom_Curve) C3d = BRep_Tool::Curve( E,f,l );
Handle(Geom_Curve) NC3d = BRep_Tool::Curve( NE,f,l);
if ( C3d != NC3d) {
gp_Vec D1, ND1; gp_Pnt P;
TopoDS_Vertex V = TopExp::FirstVertex(NE);
u = BRep_Tool::Parameter(V,NE);
NC3d->D1 (u, P, ND1);
u = BRep_Tool::Parameter(V,E);
C3d ->D1 (u, P, D1);
if (ND1.Dot(D1) < 0)
NE.Reverse();
}
}
}
if (myEqualEdges.Contains( NE ))
AddedEqualM.Add( NE );
needRebuild = Standard_True;
}
if (isNewE || isSectionE)
myNewSection.Add( NE );
if (isNewE)
loops.AddSectionEdge(NE);
else
loops.AddConstEdge(NE);
}
}
//-------------------
// Build the faces.
//-------------------
if (needRebuild) {
loops.Perform();
loops.WiresToFaces(myImagesEdges);
LNF = loops.NewFaces();
myImagesFaces.Bind(F,LNF);
// replace the result faces that have already been built
// during same domain faces reconstruction done earlier
if (myInter3d.HasSameDomainF( F ))
{
// build map edge to same domain faces: EFM
TopTools_IndexedDataMapOfShapeListOfShape EFM;
TopTools_MapOfShape SDFM; // avoid doubling
itl.Initialize( myInter3d.SameDomain( F ));
for (; itl.More(); itl.Next()) {
if ( !myImagesFaces.HasImage( itl.Value() ))
continue;
// loop on splits of a SD face
TopTools_ListIteratorOfListOfShape itNF;
itNF.Initialize (myImagesFaces.Image( itl.Value() ));
for ( ; itNF.More(); itNF.Next()) {
TopoDS_Shape SDF = itNF.Value();
if (myImagesFaces.HasImage( SDF )) // already replaced
SDF = myImagesFaces.Image( SDF ).First();
if (SDFM.Add (SDF))
TopExp::MapShapesAndAncestors(SDF, TopAbs_EDGE, TopAbs_FACE, EFM);
}
}
// do replace faces in the LNF
TopTools_ListOfShape LOF;
if ( !EFM.IsEmpty() )
itl.Initialize( LNF );
while (itl.More()) {
const TopoDS_Shape& NF = itl.Value();
TopExp_Explorer expE ( NF, TopAbs_EDGE );
const TopoDS_Edge& E = TopoDS::Edge (expE.Current());
if (EFM.Contains( E )) {
const TopTools_ListOfShape& SDFL = EFM.FindFromKey( E );
TopoDS_Shape SDF = SDFL.First();
Standard_Boolean GoodOri;
Standard_Real dot;
Partition_Loop3d::IsInside (E, TopoDS::Face(NF), TopoDS::Face(SDF),
1, dot, GoodOri);
if (dot < 0)
{
// NF and SDF are on different side of E
if (SDFL.Extent() == 1) {
itl.Next();
continue;
}
else
SDF = SDFL.Last(); // next face must be on the same side
}
gp_Vec V1 = Partition_Loop3d::Normal( E, TopoDS::Face( NF ));
gp_Vec V2 = Partition_Loop3d::Normal( E, TopoDS::Face( SDF ));
if (V1*V2 < 0)
SDF.Reverse();
if (!myImagesFaces.HasImage( NF ))
myImagesFaces.Bind( NF, SDF );
// mySharedFaces is used in FindFacesInside()
mySharedFaces.Add( SDF );
LOF.Prepend ( SDF );
LNF.Remove (itl);
}
else
itl.Next();
}
LNF.Append (LOF);
}
} // if (needRebuild)
else {
LNF.Append( F );
myImagesFaces.Bind(F,LNF);
}
} // if (myImagesFaces.HasImage( F ))
// fill the resulting compound
for (itl.Initialize(LNF); itl.More(); itl.Next())
myBuilder.Add ( C, itl.Value());
} // loop on faces of S
return C;
}
//=======================================================================
//function : Tri
//purpose :
//=======================================================================
static void Tri(const TopoDS_Edge& E,
TopTools_SequenceOfShape& Seq,
const Partition_Inter3d & theInter3d)
{
Standard_Boolean Invert = Standard_True;
Standard_Real U1,U2;
TopoDS_Vertex V1,V2;
while (Invert) {
Invert = Standard_False;
for ( Standard_Integer i = 1; i < Seq.Length(); i++) {
V1 = TopoDS::Vertex(Seq.Value(i));
V2 = TopoDS::Vertex(Seq.Value(i+1));
V1.Orientation(TopAbs_INTERNAL);
V2.Orientation(TopAbs_INTERNAL);
U1 = BRep_Tool::Parameter(V1,E);
U2 = BRep_Tool::Parameter(V2,E);
if (IsEqual(U1,U2)) {
if (theInter3d.ReplaceSameDomainV( V1, E ).IsSame( V1 ))
Seq.Remove(i+1); // remove V2
else
Seq.Remove(i);
i--;
continue;
}
if (U2 < U1) {
Seq.Exchange(i,i+1);
Invert = Standard_True;
}
}
}
}
//=======================================================================
//function : MakeEdges
//purpose : cut E by vertices VOnE, return list of new edges NE
//=======================================================================
void Partition_Spliter::MakeEdges (const TopoDS_Edge& E,
const TopTools_ListOfShape& VOnE,
TopTools_ListOfShape& NE ) const
{
TopoDS_Edge WE = E;
WE.Orientation(TopAbs_FORWARD);
Standard_Real U1,U2, f, l;
TopoDS_Vertex V1,V2,VF,VL;
BRep_Tool::Range(WE,f,l);
TopExp::Vertices(WE,VF,VL);
if (VOnE.Extent() < 3) { // do not rebuild not cut edge
if (( VF.IsSame( VOnE.First() ) && VL.IsSame( VOnE.Last() )) ||
VL.IsSame( VOnE.First() ) && VF.IsSame( VOnE.Last() ) ) {
NE.Append( E );
return;
}
}
TopTools_SequenceOfShape SV;
TopTools_ListIteratorOfListOfShape itv(VOnE);
TopTools_MapOfOrientedShape VM( VOnE.Extent() );
for (; itv.More(); itv.Next())
if ( VM.Add( itv.Value() ))
SV.Append(itv.Value());
Tri( WE, SV, myInter3d );
if (SV.Length() < 3) { // do not rebuild not cut edge
if (( VF.IsSame( SV.First() ) && VL.IsSame( SV.Last() )) ||
VL.IsSame( SV.First() ) && VF.IsSame( SV.Last() ) ) {
NE.Append( E );
return;
}
}
Standard_Integer iVer, NbVer = SV.Length();
//----------------------------------------------------------------
// Construction of the new edges.
//----------------------------------------------------------------
if (VF.IsSame(VL)) { // closed edge
if (NbVer==1)
SV.Append( SV.First() );
else if (!SV.First().IsSame(SV.Last())) {
Standard_Boolean isFirst=0;
Standard_Real minDU = 1.e10;
TopoDS_Vertex endV = Partition_Inter2d::FindEndVertex(VOnE, f,l, E, isFirst,minDU);
if (endV.IsSame(SV.First()))
SV.Append(endV);
else if (endV.IsSame(SV.Last()))
SV.Prepend(endV);
else
MESSAGE ("END VERTEX IS IN SEQUENCE MIDDLE");
}
NbVer = SV.Length();
}
for (iVer=1; iVer < NbVer; iVer++) {
V1 = TopoDS::Vertex(SV(iVer));
V2 = TopoDS::Vertex(SV(iVer+1));
TopoDS_Shape NewEdge = WE.EmptyCopied();
V1.Orientation(TopAbs_FORWARD);
myBuilder.Add (NewEdge,V1);
V2.Orientation(TopAbs_REVERSED);
myBuilder.Add (NewEdge,V2);
if (iVer==1)
U1 = f;
else {
V1.Orientation(TopAbs_INTERNAL);
U1=BRep_Tool::Parameter(V1,WE);
}
if (iVer+1 == NbVer)
U2 = l;
else {
V2.Orientation(TopAbs_INTERNAL);
U2=BRep_Tool::Parameter(V2,WE);
}
if (Abs(U1-U2) <= Precision::PConfusion()) {
MESSAGE( "MakeEdges(), EQUAL PARAMETERS OF DIFFERENT VERTICES");
continue;
}
TopoDS_Edge EE=TopoDS::Edge(NewEdge);
myBuilder.Range (EE,U1,U2);
TopoDS_Edge NEdge = TopoDS::Edge(NewEdge);
myBuilder.SameParameter(NEdge,Standard_False);
Standard_Real tol = 1.0e-2;
Standard_Boolean flag = BRep_Tool::SameParameter(NEdge);
if (!flag) {
BRepLib::SameParameter(NEdge,tol);
}
NE.Append(NEdge.Oriented(E.Orientation()));
}
}
//=======================================================================
//function : MergeEqualEdges
//purpose : find equal edges, choose ones to keep and make
// them have pcurves on all faces they are shared by
//=======================================================================
void Partition_Spliter::MergeEqualEdges (const TopTools_ListOfShape& LSE)
{
// find equal edges
// map: edge - equal edges
TopTools_DataMapOfShapeListOfShape EEM( LSE.Extent() );
findEqual (LSE, LSE, 0, EEM, myEqualEdges);
TopTools_ListOfShape EEL; // list of equal edges
TopTools_DataMapIteratorOfDataMapOfShapeListOfShape itM (EEM);
for ( ; itM.More(); itM.Next()) {
EEL = itM.Value();
EEL.Append( itM.Key() );
// choose an edge to keep, section edges have priority
TopoDS_Edge EKeep;
TopTools_ListIteratorOfListOfShape itEE (EEL);
for (; itEE.More(); itEE.Next()) {
EKeep = TopoDS::Edge( itEE.Value() );
const TopoDS_Edge& EKeepOrig = TopoDS::Edge( myImagesEdges.Root( EKeep ));
if (myInter3d.IsSectionEdge( EKeepOrig ))
break;
}
// update edge images and build pcurves
Standard_Real f,l, tol;
for (itEE.Initialize (EEL); itEE.More(); itEE.Next()) {
const TopoDS_Edge& E = TopoDS::Edge( itEE.Value() );
if ( E.IsSame( EKeep ))
continue;
// 1. build pcurves of the kept edge on faces where replaced edges exist
const TopoDS_Edge& EReplOrig = TopoDS::Edge( myImagesEdges.Root( E ));
TopTools_ListOfShape FL;
FL = myAsDes->Ascendant( EReplOrig );
Standard_Integer iFace, iFirstSectionFace = FL.Extent() + 1;
// add faces where the replaced edge is a section edge
if (myInter3d.IsSectionEdge( EReplOrig )) {
TopTools_ListIteratorOfListOfShape seIt;
seIt.Initialize( myInter3d.SectionEdgeFaces ( EReplOrig ));
for ( ; seIt.More(); seIt.Next())
FL.Append( seIt.Value() );
}
// loop on faces
TopTools_ListIteratorOfListOfShape itF (FL);
for ( iFace = 1 ; itF.More(); itF.Next(), ++iFace ) {
const TopoDS_Face& F = TopoDS::Face( itF.Value());
Handle(Geom2d_Curve) pc = BRep_Tool::CurveOnSurface( EKeep, F, f,l);
if (pc.IsNull()) {
Handle(Geom_Curve) C3d = BRep_Tool::Curve( EKeep, f, l);
C3d = new Geom_TrimmedCurve( C3d, f,l);
pc = TopOpeBRepTool_CurveTool::MakePCurveOnFace (F,C3d,tol);
if (pc.IsNull()) {
MESSAGE (" CANNOT BUILD PCURVE ");
}
myBuilder.UpdateEdge( EKeep, pc, F, tol);
}
if (iFace >= iFirstSectionFace ||
!BRep_Tool::IsClosed( EReplOrig, F ))
continue;
// build the second pcurve for a seam
TopoDS_Vertex V = TopExp::FirstVertex( EKeep );
Standard_Real Ukeep = BRep_Tool::Parameter( V, EKeep );
Standard_Real Urepl = BRep_Tool::Parameter( V, E );
TopoDS_Edge EReplRev = E;
EReplRev.Reverse();
Handle(Geom2d_Curve) pcRepl1 = BRep_Tool::CurveOnSurface( E, F, f,l);
Handle(Geom2d_Curve) pcRepl2 = BRep_Tool::CurveOnSurface( EReplRev, F, f,l);
gp_Pnt2d p1r, p2r, pk;
p1r = pcRepl1->Value( Urepl );
p2r = pcRepl2->Value( Urepl );
pk = pc->Value( Ukeep );
// suppose that pk is equal to either p1r or p2r
Standard_Boolean isUPeriod =
( Abs( p1r.X() - p2r.X() ) > Abs( p1r.Y() - p2r.Y() ));
Standard_Boolean is1Equal;
if (isUPeriod)
is1Equal = ( Abs( p1r.X() - pk.X() ) < Abs( p2r.X() - pk.X() ));
else
is1Equal = ( Abs( p1r.Y() - pk.Y() ) < Abs( p2r.Y() - pk.Y() ));
Handle(Geom2d_Curve) pc2 = Handle(Geom2d_Curve)::DownCast
( pc->Translated( pk, is1Equal ? p2r : p1r ) );
if (E.Orientation() == TopAbs_REVERSED)
is1Equal = !is1Equal;
if (is1Equal)
myBuilder.UpdateEdge( EKeep, pc, pc2, F, tol);
else
myBuilder.UpdateEdge( EKeep, pc2, pc, F, tol);
} // loop on a Faces where a replaced edge exists
// 2. update edge images according to replacement
if (myImagesEdges.HasImage( E ))
myImagesEdges.Remove( E );
myImagesEdges.Bind( E, EKeep );
} // loop on a list of equal edges EEL
} // loop on a map of equal edges EEM
}
//=======================================================================
//function : KeepShapesInside
//purpose : remove shapes that are outside of S from result
//=======================================================================
void Partition_Spliter::KeepShapesInside (const TopoDS_Shape& S)
{
TopoDS_Iterator it;
if (S.ShapeType() < TopAbs_SOLID) { // compound or compsolid
for (it.Initialize( S ); it.More(); it.Next())
KeepShapesInside( it.Value());
return;
}
Standard_Boolean isTool = Standard_False;
if (!myImageShape.HasImage( S )) {
isTool = CheckTool( S );
if (!isTool) return;
}
// build map of internal faces
TopTools_IndexedMapOfShape MIF;
TopoDS_Shape IntFacesComp = FindFacesInside( S, Standard_False, Standard_True);
TopExp::MapShapes( IntFacesComp, TopAbs_FACE, MIF );
TopoDS_Compound C;
myBuilder.MakeCompound(C);
TopAbs_ShapeEnum anInternalShapeType = TopAbs_SHAPE;
if (!MIF.IsEmpty())
{
// leave in the result only those shapes having a face in MIF
for (it.Initialize( myShape ); it.More(); it.Next()) {
const TopoDS_Shape & aResShape = it.Value();
TopExp_Explorer expResF( aResShape, TopAbs_FACE );
for (; expResF.More(); expResF.Next()) {
if ( MIF.Contains( expResF.Current())) {
myBuilder.Add( C, aResShape );
if (aResShape.ShapeType() < anInternalShapeType)
anInternalShapeType = aResShape.ShapeType();
break;
}
}
}
}
// may be S was not split by internal faces then it is missing
// in myShape, add it
if (!isTool &&
(anInternalShapeType > TopAbs_SOLID || S.ShapeType() > TopAbs_SOLID))
{
TopTools_IndexedMapOfShape MSF; // map of split faces of S
TopExp::MapShapes( myImageShape.Image(S).First(), TopAbs_FACE, MSF);
// find a shape having all faces in MSF
for (it.Initialize( myShape ); it.More(); it.Next()) {
TopExp_Explorer expResF( it.Value(), TopAbs_FACE );
for (; expResF.More(); expResF.Next()) {
if (! MSF.Contains( expResF.Current()))
break;
}
if (! expResF.More()) {
myBuilder.Add( C, it.Value() );
break;
}
}
}
myShape = C;
}
//=======================================================================
//function : RemoveShapesInside
//purpose : remove shapes that are inside S from result
//=======================================================================
void Partition_Spliter::RemoveShapesInside (const TopoDS_Shape& S)
{
TopoDS_Iterator it;
if (S.ShapeType() < TopAbs_SOLID) { // compound or compsolid
for (it.Initialize( S ); it.More(); it.Next())
RemoveShapesInside( it.Value());
return;
}
Standard_Boolean isTool = Standard_False;
if (!myImageShape.HasImage( S )) {
isTool = CheckTool( S );
if (!isTool) return;
}
TopoDS_Shape IntFacesComp = FindFacesInside( S, Standard_False, Standard_True);
TopTools_IndexedMapOfShape MIF; // map of internal faces
TopExp::MapShapes( IntFacesComp, TopAbs_FACE, MIF);
if (MIF.IsEmpty()) return;
// add to MIF split faces of S
if (myImageShape.HasImage(S))
TopExp::MapShapes( myImageShape.Image(S).First(), TopAbs_FACE, MIF);
// leave in the result only those shapes not having all face in MIF
TopoDS_Compound C;
myBuilder.MakeCompound(C);
// RMF : faces of removed shapes that encounter once
TopTools_MapOfShape RFM;
for (it.Initialize( myShape ); it.More(); it.Next()) {
TopExp_Explorer expResF( it.Value(), TopAbs_FACE );
for (; expResF.More(); expResF.Next())
if (!MIF.Contains( expResF.Current()))
break;
if (expResF.More())
// add shape to result
myBuilder.Add( C, it.Value() );
else
// add faces of a removed shape to RFM
for (expResF.ReInit(); expResF.More(); expResF.Next()) {
const TopoDS_Shape& F = expResF.Current();
if ( ! RFM.Remove ( F ))
RFM.Add( F );
}
}
if (!isTool) {
// rebuild S, it must remain in the result
Standard_Boolean isClosed = Standard_False;
switch (S.ShapeType()) {
case TopAbs_SOLID :
isClosed = Standard_True; break;
case TopAbs_SHELL: {
TopTools_IndexedDataMapOfShapeListOfShape MEF;
TopExp::MapShapesAndAncestors(S, TopAbs_EDGE, TopAbs_FACE, MEF);
Standard_Integer i;
for (i=1; isClosed && i<=MEF.Extent(); ++i)
isClosed = ( MEF(i).Extent() != 1 );
break;
}
default:
isClosed = Standard_False;
}
if (isClosed) {
// add to a new shape external faces of removed shapes, ie those in RFM
TopoDS_Shell Shell;
myBuilder.MakeShell( Shell );
// exclude redundant internal face with edges encountered only once
TopTools_IndexedDataMapOfShapeListOfShape MEF;
TopTools_MapIteratorOfMapOfShape itF (RFM);
for ( ; itF.More(); itF.Next())
TopExp::MapShapesAndAncestors(itF.Key(), TopAbs_EDGE, TopAbs_FACE, MEF);
// add only faces forming a closed shell
for (itF.Reset() ; itF.More(); itF.Next())
{
TopExp_Explorer expE (itF.Key(), TopAbs_EDGE);
for (; expE.More(); expE.Next())
if (MEF.FindFromKey(expE.Current()).Extent() == 1)
break;
if (!expE.More())
myBuilder.Add( Shell, itF.Key());
}
if (S.ShapeType() == TopAbs_SOLID) {
TopoDS_Solid Solid;
myBuilder.MakeSolid( Solid );
myBuilder.Add (Solid, Shell);
myBuilder.Add (C, Solid);
}
else
myBuilder.Add (C, Shell);
}
else {
if (myImageShape.HasImage( S )) {
for (it.Initialize( myImageShape.Image(S).First()); it.More(); it.Next())
myBuilder.Add (C, it.Value());
}
}
}
myShape = C;
}
//=======================================================================
//function : CheckTool
//purpose : Return True if <S> is a tool shape. Prepare tool
// faces of <S> for the search of internal faces.
//=======================================================================
Standard_Boolean Partition_Spliter::CheckTool(const TopoDS_Shape& S)
{
// suppose S has not an image
Standard_Boolean isTool = Standard_False;
TopoDS_Compound C;
myBuilder.MakeCompound( C );
TopExp_Explorer expF( S, TopAbs_FACE);
for (; expF.More(); expF.Next()) {
const TopoDS_Face& F = TopoDS::Face( expF.Current() );
if (myMapTools.Contains( F ))
isTool = Standard_True;
else
continue;
if (myImagesFaces.HasImage( F )) {
// F has been reconstructed
TopAbs_Orientation Fori = F.Orientation();
TopTools_ListOfShape LNF;
myImagesFaces.LastImage( F, LNF);
TopTools_ListIteratorOfListOfShape itF (LNF);
for ( ; itF.More(); itF.Next())
myBuilder.Add( C, itF.Value().Oriented(Fori) );
continue;
}
Standard_Boolean hasSectionE = myInter3d.HasSectionEdge( F );
Standard_Boolean hasNewE = myAsDes->HasDescendant( F );
if (!hasSectionE && !hasNewE)
{
// F intersects nothing
myBuilder.Add( C, F );
continue;
}
// make an image for F
TopoDS_Face NF = F;
NF.Orientation(TopAbs_FORWARD);
NF = TopoDS::Face( NF.EmptyCopied() ); // make a copy
TopoDS_Wire NW;
myBuilder.MakeWire( NW );
// add edges, as less as possible
TopTools_ListOfShape NEL;
TopTools_ListIteratorOfListOfShape itNE;
if (hasSectionE) {
// add section edges
TopExp_Explorer expE;
for ( ; expE.More(); expE.Next()) {
if (! myImagesEdges.HasImage( expE.Current() ))
continue;
myImagesEdges.LastImage( expE.Current(), NEL );
for ( itNE.Initialize( NEL ); itNE.More(); itNE.Next())
myBuilder.Add ( NW, itNE.Value());
}
}
if (hasNewE) {
// add new edges
NEL = myAsDes->Descendant( F );
for ( itNE.Initialize( NEL ); itNE.More(); itNE.Next()) {
TopTools_ListOfShape SEL; // splits
myImagesEdges.LastImage( itNE.Value(), SEL );
TopTools_ListIteratorOfListOfShape itSE (SEL);
for ( ; itSE.More(); itSE.Next())
myBuilder.Add ( NW, itSE.Value());
}
}
myBuilder.Add( NF, NW );
myBuilder.Add (C, NF);
NF.Orientation( F.Orientation() ); // NF is most probably invalid
myImagesFaces.Bind (F, NF);
}
if (isTool)
myImageShape.Bind (S, C);
return isTool;
}
//=======================================================================
//function : IsInside
//purpose : Return True if the first vertex of S1 inside S2.
// If S1.IsNull(), check infinite point against S2.
//=======================================================================
Standard_Boolean Partition_Spliter::IsInside (const TopoDS_Shape& theS1,
const TopoDS_Shape& theS2)
{
BRepClass3d_SolidClassifier aClassifier( theS2 );
TopExp_Explorer expl( theS1, TopAbs_VERTEX );
if (!expl.More())
aClassifier.PerformInfinitePoint( ::RealSmall());
else
{
const TopoDS_Vertex & aVertex = TopoDS::Vertex( expl.Current() );
aClassifier.Perform (BRep_Tool::Pnt( aVertex ),
BRep_Tool::Tolerance( aVertex ));
}
return ( aClassifier.State() == TopAbs_IN );
}
//=======================================================================
//function : GetOriginalShape
//purpose : Return the shape aShape originates from. aShape
// should be a face or more complex result shape
//=======================================================================
TopoDS_Shape Partition_Spliter::GetOriginalShape(const TopoDS_Shape& theShape) const
{
TopoDS_Shape anOrigShape;
TopExp_Explorer expl( theShape, TopAbs_FACE);
if (expl.More())
{
TopoDS_Shape aFace = expl.Current();
if (myImagesFaces.IsImage( aFace ))
aFace = myImagesFaces.Root( aFace );
anOrigShape = myFaceShapeMap.Find( aFace );
}
return anOrigShape;
}
//=======================================================================
//function : FindToolsToReconstruct
//purpose : find and store as objects tools which interfere
// with solids or are inside solids without
// an interference
//=======================================================================
void Partition_Spliter::FindToolsToReconstruct()
{
if (myMapTools.IsEmpty())
return;
Standard_Integer nbFoundTools = 0;
// build edge - face map in order to detect interference with section edges
TopTools_IndexedDataMapOfShapeListOfShape EFM;
TopTools_MapIteratorOfMapOfShape aMapIt;
for (aMapIt.Initialize(myMapTools); aMapIt.More(); aMapIt.Next())
TopExp::MapShapesAndAncestors( aMapIt.Key(), TopAbs_EDGE, TopAbs_FACE, EFM);
for (aMapIt.Initialize(myMapFaces); aMapIt.More(); aMapIt.Next())
TopExp::MapShapesAndAncestors( aMapIt.Key(), TopAbs_EDGE, TopAbs_FACE, EFM);
TopTools_MapOfShape aCurrentSolids, aCheckedShapes;
// faces cut by new edges
TopTools_MapOfShape & aSectionFaces = myInter3d.TouchedFaces();
// keep solids interfering with each other in aCurrentSolids map
// and add tool faces intersecting solids as object shapes
TopTools_ListIteratorOfListOfShape itS, itF, itCF, itE;
for (itS.Initialize( myListShapes ); itS.More(); itS.Next()) {
TopExp_Explorer expSo (itS.Value(), TopAbs_SOLID);
for (; expSo.More(); expSo.Next()) {
// check if a solid has been already processed
const TopoDS_Shape & aSo = expSo.Current();
if (!aCheckedShapes.Add( aSo ))
continue;
aCurrentSolids.Add( aSo );
// faces to check
TopTools_ListOfShape aFacesToCheck;
TopExp_Explorer exp( aSo, TopAbs_FACE );
for ( ; exp.More(); exp.Next())
aFacesToCheck.Append ( exp.Current());
// add other shapes interefering with a solid.
// iterate faces to check while appending new ones
for (itCF.Initialize (aFacesToCheck) ; itCF.More(); itCF.Next())
{
const TopoDS_Shape& aCheckFace = itCF.Value();
// if (!aCheckedShapes.Add( aCheckFace ))
// continue;
// find faces interfering with aCheckFace
TopTools_ListOfShape anIntFaces;
// ** 1. faces intersecting aCheckFace with creation of new edges on it
if ( myAsDes->HasDescendant( aCheckFace ))
{
// new edges on aCheckFace
const TopTools_ListOfShape& NEL = myAsDes->Descendant( aCheckFace );
for (itE.Initialize( NEL); itE.More(); itE.Next())
{
const TopoDS_Shape & aNewEdge = itE.Value();
if (!aCheckedShapes.Add( aNewEdge ))
continue;
// faces interfering by aNewEdge
itF.Initialize (myAsDes->Ascendant( aNewEdge ));
for (; itF.More(); itF.Next())
if (aCheckFace != itF.Value())
anIntFaces.Append( itF.Value() );
// ** 2. faces having section edge aNewEdge on aFacesToCheck
if (EFM.Contains( aNewEdge))
{
itF.Initialize ( EFM.FindFromKey (itE.Value()));
for (; itF.More(); itF.Next())
if (aCheckFace != itF.Value())
anIntFaces.Append( itF.Value() );
}
}
}
// ** 3. faces cut by edges of aCheckFace
TopExp_Explorer expE (aCheckFace, TopAbs_EDGE);
for ( ; expE.More(); expE.Next())
{
const TopoDS_Shape & aCheckEdge = expE.Current();
if (aCheckedShapes.Add( aCheckEdge ) &&
myInter3d.IsSectionEdge( TopoDS::Edge( aCheckEdge )))
{
itF.Initialize( myInter3d.SectionEdgeFaces( TopoDS::Edge( aCheckEdge )));
for (; itF.More(); itF.Next())
if (aCheckFace != itF.Value())
anIntFaces.Append( itF.Value() );
}
}
// process faces interfering with aCheckFace and shapes they
// belong to
for (itF.Initialize (anIntFaces); itF.More(); itF.Next())
{
const TopoDS_Shape & F = itF.Value();
if (! aCheckedShapes.Add( F ))
continue;
Standard_Boolean isTool = myMapTools.Contains( F );
if (isTool &&
myFaceShapeMap( aCheckFace ).ShapeType() == TopAbs_SOLID )
{
// a tool interfering with a solid
if (aSectionFaces.Contains( F ))
AddShape( F );
++ nbFoundTools;
if (nbFoundTools == myMapTools.Extent())
return;
}
const TopoDS_Shape & S = myFaceShapeMap( F );
if (aCheckedShapes.Add( S ))
{
// a new shape interefering with aCurrentSolids is found
if (!isTool && S.ShapeType() == TopAbs_SOLID)
aCurrentSolids.Add ( S );
// add faces to aFacesToCheck list
for ( exp.Init( S, TopAbs_FACE ); exp.More(); exp.Next())
aFacesToCheck.Append ( exp.Current() );
}
}
} // loop on aFacesToCheck
// Here aCurrentSolids contains all solids interfering with each other.
// aCheckedShapes contains all faces belonging to shapes included
// in or interfering with aCurrentSolids or previously checked solids.
// Test if tool faces that do not interefere with other shapes are
// wrapped by any of aCurrentSolids
TopTools_MapIteratorOfMapOfShape aSolidIt (aCurrentSolids);
for ( ; aSolidIt.More(); aSolidIt.Next())
{
const TopoDS_Shape & aSolid = aSolidIt.Key();
TopTools_MapOfShape aCheckedTools( myMapTools.Extent() );
TopTools_MapIteratorOfMapOfShape aToolIt (myMapTools);
for ( ; aToolIt.More(); aToolIt.Next())
{
const TopoDS_Shape & aToolFace = aToolIt.Key();
if (aCheckedShapes.Contains( aToolFace ) || // already found
aCheckedTools.Contains( aToolFace )) // checked against aSolid
continue;
const TopoDS_Shape & aToolShape = myFaceShapeMap( aToolFace );
TopExp_Explorer aToolFaceIt( aToolShape, TopAbs_FACE );
Standard_Boolean isInside = IsInside( aToolShape, aSolid );
for ( ; aToolFaceIt.More(); aToolFaceIt.Next() )
{
const TopoDS_Shape & aTool = aToolFaceIt.Current();
aCheckedTools.Add( aTool );
if (isInside)
{
if (aSectionFaces.Contains( aTool ))
AddShape( aTool );
++ nbFoundTools;
if (nbFoundTools == myMapTools.Extent())
return;
aCheckedShapes.Add( aTool );
}
}
}
}
} // loop on solid shapes
}
}
#endif
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