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95fd864d90
geom/PARTITION/Partition_Inter3d.cxx
nri 95fd864d90 sources v1.2
2003-07-09 07:30:56 +00:00

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// 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_Inter3d.cxx
// Author : Benedicte MARTIN
// Module : GEOM
// $Header$
using namespace std;
#include "Partition_Inter3d.ixx"
#include "Partition_Inter2d.hxx"
#include "utilities.h"
#include <BRepOffset_Tool.hxx>
#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <BRepAlgo_AsDes.hxx>
#include <BRepAlgo_Image.hxx>
#include <BRepLib.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Compound.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
#include <TopOpeBRepTool_BoxSort.hxx>
#ifdef DEB
#include <DBRep.hxx>
#endif
#include <stdio.h>
#include <TopOpeBRepDS_HDataStructure.hxx>
#include <TopOpeBRep_DSFiller.hxx>
#include <TopOpeBRepTool_GeomTool.hxx>
#include <TopOpeBRepTool_OutCurveType.hxx>
#include <TopOpeBRepDS_BuildTool.hxx>
#include <TopOpeBRepBuild_Builder.hxx>
#include <TopOpeBRepDS_CurveExplorer.hxx>
#include <Geom2d_Curve.hxx>
#include <TopOpeBRepDS_PointIterator.hxx>
#include <TopOpeBRepDS_Transition.hxx>
#include <Geom_Curve.hxx>
#include <TopOpeBRepTool_CurveTool.hxx>
#include <TopOpeBRepDS_Interference.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
#include <BRepLib_MakeVertex.hxx>
#include <Precision.hxx>
#include <TColStd_MapOfInteger.hxx>
#include <BRepTools.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Geom_Surface.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom2dAPI_ProjectPointOnCurve.hxx>
#include <GeomAPI_ProjectPointOnCurve.hxx>
//=======================================================================
//function : Partition_Inter3d
//purpose :
//=======================================================================
Partition_Inter3d::Partition_Inter3d()
{
}
//=======================================================================
//function : Partition_Inter3d
//purpose :
//=======================================================================
Partition_Inter3d::Partition_Inter3d(const Handle(BRepAlgo_AsDes)& AsDes)
:myAsDes(AsDes)
{
mySectionEdgesAD = new BRepAlgo_AsDes;
}
//=======================================================================
//function : CompletPart3d
//purpose : FaceShapeMap is just to know the shape a face belongs to
//=======================================================================
void Partition_Inter3d::CompletPart3d(const TopTools_ListOfShape& SetOfFaces1,
const TopTools_DataMapOfShapeShape& FaceShapeMap)
{
if (myAsDes.IsNull())
myAsDes = new BRepAlgo_AsDes;
TopTools_ListIteratorOfListOfShape it;
//---------------------------------------------------------------
// Construction of bounding boxes.
//---------------------------------------------------------------
BRep_Builder B;
TopoDS_Compound CompOS;
B.MakeCompound(CompOS);
for (it.Initialize(SetOfFaces1); it.More(); it.Next())
B.Add(CompOS, it.Value());
TopOpeBRepTool_BoxSort BOS;
BOS.AddBoxesMakeCOB(CompOS,TopAbs_FACE);
for (it.Initialize(SetOfFaces1); it.More(); it.Next()) {
TopoDS_Face F1 = TopoDS::Face(it.Value());
// avoid intersecting faces of one shape
TopoDS_Shape S1;
if (FaceShapeMap.IsBound(F1)) S1 = FaceShapeMap.Find(F1);
// avoid intersecting faces sharing vertices, suppose they belong to
// shapes sharing same faces
TopTools_IndexedMapOfShape VM;
TopExp::MapShapes( F1, TopAbs_VERTEX, VM);
TColStd_ListIteratorOfListOfInteger itLI = BOS.Compare(F1);
for (; itLI.More(); itLI.Next()) {
TopoDS_Face F2 = TopoDS::Face(BOS.TouchedShape(itLI));
if (F1.IsSame(F2) || IsDone(F1,F2))
continue;
TopoDS_Shape S2;
if (FaceShapeMap.IsBound(F2)) S2 = FaceShapeMap.Find(F2);
if (!S1.IsNull() && S1.IsSame(S2))
continue; // descendants of one shape
TopExp_Explorer expV (F2, TopAbs_VERTEX);
for ( ; expV.More(); expV.Next())
if (VM.Contains( expV.Current() ))
break;
if (expV.More())
continue; // faces have a common edge
F1.Orientation(TopAbs_FORWARD);
F2.Orientation(TopAbs_FORWARD);
FacesPartition(F1,F2);
}
// mark as modified a face which has at least one new edge
if (!myAsDes->HasDescendant( F1 ))
continue;
TopTools_ListIteratorOfListOfShape itE (myAsDes->Descendant( F1 ));
for ( ; itE.More(); itE.Next()) {
if (myNewEdges.Contains( itE.Value())) {
myTouched.Add( F1 );
break;
}
}
}
}
//=======================================================================
//function : PutInBounds
//purpose :
//=======================================================================
static void PutInBounds (const TopoDS_Face& F,
const TopoDS_Edge& E,
Handle(Geom2d_Curve)& C2d)
{
Standard_Real umin,umax,vmin,vmax;
Standard_Real f,l;
BRep_Tool::Range(E,f,l);
TopLoc_Location L; // Recup S avec la location pour eviter la copie.
Handle (Geom_Surface) S = BRep_Tool::Surface(F,L);
if (S->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
S = (*(Handle_Geom_RectangularTrimmedSurface*)&S)->BasisSurface();
}
//---------------
// Recadre en U.
//---------------
if (!S->IsUPeriodic() && !S->IsVPeriodic()) return;
BRepTools::UVBounds(F,umin,umax,vmin,vmax);
if (S->IsUPeriodic()) {
Standard_Real period = S->UPeriod();
Standard_Real eps = period*1.e-6;
gp_Pnt2d Pf = C2d->Value(f);
gp_Pnt2d Pl = C2d->Value(l);
gp_Pnt2d Pm = C2d->Value(0.34*f + 0.66*l);
Standard_Real minC = Min(Pf.X(),Pl.X()); minC = Min(minC,Pm.X());
Standard_Real maxC = Max(Pf.X(),Pl.X()); maxC = Max(maxC,Pm.X());
Standard_Real du = 0.;
if (minC< umin - eps) {
du = (int((umin - minC)/period) + 1)*period;
}
if (minC > umax + eps) {
du = -(int((minC - umax)/period) + 1)*period;
}
if (du != 0) {
gp_Vec2d T1(du,0.);
C2d->Translate(T1);
minC += du; maxC += du;
}
// Ajuste au mieux la courbe dans le domaine.
if (maxC > umax +100*eps) {
Standard_Real d1 = maxC - umax;
Standard_Real d2 = umin - minC + period;
if (d2 < d1) du =-period;
if ( du != 0.) {
gp_Vec2d T2(du,0.);
C2d->Translate(T2);
}
}
}
//------------------
// Recadre en V.
//------------------
if (S->IsVPeriodic()) {
Standard_Real period = S->VPeriod();
Standard_Real eps = period*1.e-6;
gp_Pnt2d Pf = C2d->Value(f);
gp_Pnt2d Pl = C2d->Value(l);
gp_Pnt2d Pm = C2d->Value(0.34*f + 0.66*l);
Standard_Real minC = Min(Pf.Y(),Pl.Y()); minC = Min(minC,Pm.Y());
Standard_Real maxC = Max(Pf.Y(),Pl.Y()); maxC = Max(maxC,Pm.Y());
Standard_Real dv = 0.;
if (minC< vmin - eps) {
dv = (int((vmin - minC)/period) + 1)*period;
}
if (minC > vmax + eps) {
dv = -(int((minC - vmax)/period) + 1)*period;
}
if (dv != 0) {
gp_Vec2d T1(0.,dv);
C2d->Translate(T1);
minC += dv; maxC += dv;
}
// Ajuste au mieux la courbe dans le domaine.
if (maxC > vmax +100*eps) {
Standard_Real d1 = maxC - vmax;
Standard_Real d2 = vmin - minC + period;
if (d2 < d1) dv =-period;
if ( dv != 0.) {
gp_Vec2d T2(0.,dv);
C2d->Translate(T2);
}
}
}
}
//=======================================================================
//function : Inter3D
//purpose :
//=======================================================================
void Partition_Inter3d::Inter3D(const TopoDS_Face& F1,
const TopoDS_Face& F2,
TopTools_ListOfShape& L)
{
BRep_Builder B;
// fill the data Structure
Handle(TopOpeBRepDS_HDataStructure) DatStr = new TopOpeBRepDS_HDataStructure();
TopOpeBRep_DSFiller DSFiller;
DSFiller.Insert(F1,F2,DatStr);
// define the GeomTool used by the DSFiller :
// compute BSpline of degree 1 on intersection curves.
Standard_Real tol3dAPPROX = 1e-7;
Standard_Real tol2dAPPROX = 1e-7;
TopOpeBRepTool_GeomTool GT2 (TopOpeBRepTool_APPROX);
GT2.SetTolerances(tol3dAPPROX,tol2dAPPROX);
TopOpeBRepDS_BuildTool BT(GT2);
// Perform Section
TopOpeBRepBuild_Builder TopB(BT);
TopB.Perform(DatStr);
// ===============
// Store new edges
// ===============
L.Clear();
TopOpeBRepDS_CurveExplorer cex(DatStr->DS());
for (; cex.More(); cex.Next()) {
const TopOpeBRepDS_Curve& CDS = cex.Curve();
Standard_Integer ic = cex.Index();
Handle(Geom2d_Curve) pc1 = CDS.Curve1();
Handle(Geom2d_Curve) pc2 = CDS.Curve2();
TopTools_ListIteratorOfListOfShape itLE = TopB.NewEdges(ic);
while (itLE.More()) {
TopoDS_Edge E = TopoDS::Edge(itLE.Value());
// Standard_Real f,l;
// BRep_Tool::Range(E,f,l);
PutInBounds (F1,E,pc1);
PutInBounds (F2,E,pc2);
B.UpdateEdge (E,pc1,F1,0.);
B.UpdateEdge (E,pc2,F2,0.);
L.Append (E);
itLE.Next();
if (itLE.More()) {
pc1 = Handle(Geom2d_Curve)::DownCast(pc1->Copy());
pc2 = Handle(Geom2d_Curve)::DownCast(pc2->Copy());
}
}
}
// ===================================================
// Store section edges, same domain faces and verives
// ===================================================
TopTools_ListOfShape empty, LSP, LSE;
if ( DatStr->HasSameDomain( F1 )) { // same domain faces
if (!mySameDomainFM.IsBound(F1))
mySameDomainFM.Bind(F1,empty);
if (!mySameDomainFM.IsBound(F2))
mySameDomainFM.Bind(F2,empty);
mySameDomainFM(F1).Append(F2);
mySameDomainFM(F2).Append(F1);
}
const TopOpeBRepDS_DataStructure& DS = DatStr->DS();
Standard_Integer j,i,nes = DS.NbSectionEdges();
if (!nes) return;
TopoDS_Vertex V, sdeV1, sdeV2;
TopTools_MapOfShape MV;
// put vertices on section edges
for (i=1;i<=nes;i++) {
TopoDS_Edge se, sde, oe; // section, same domain, other edge
se = DS.SectionEdge(i);
if (! TopB.IsSplit(se,TopAbs_ON))
continue;
if (DatStr->HasSameDomain(se)) {
sde = TopoDS::Edge( DatStr->SameDomain(se).Value() );
TopExp::Vertices( sde, sdeV1, sdeV2);
}
TColStd_MapOfInteger MIV;
TopOpeBRepDS_PointIterator itP (DS.ShapeInterferences( se ));
itP.SupportKind( TopOpeBRepDS_EDGE );
for (; itP.More(); itP.Next()) {
oe = TopoDS::Edge( DS.Shape( itP.Support()));
if (itP.IsVertex()) {
if ( !MIV.Add( itP.Current() ))
continue;
V = TopoDS::Vertex( DS.Shape( itP.Current()));
if ( !sde.IsNull() && (V.IsSame(sdeV1) || V.IsSame(sdeV2)) )
oe = sde;
V = ReplaceSameDomainV( V , oe );
V.Orientation( TopAbs_INTERNAL);
B.UpdateVertex( V, itP.Parameter(), se, 0.);
}
else {
const TopOpeBRepDS_Point& DSP = DS.Point( itP.Current());
V = BRepLib_MakeVertex( DSP.Point() );
V.Orientation( TopAbs_INTERNAL);
B.UpdateVertex( V, itP.Parameter(), se, DSP.Tolerance());
// make V be on the other edge
TopOpeBRepDS_PointIterator itOP (DS.ShapeInterferences( oe ));
for (; itOP.More(); itOP.Next()) {
const TopOpeBRepDS_Point& ODSP = DS.Point( itOP.Current());
if ( DSP.IsEqual (ODSP)) {
B.UpdateVertex( V, itOP.Parameter(), TopoDS::Edge(oe), ODSP.Tolerance());
break;
}
}
}
TopoDS_Vertex addedV = Partition_Inter2d::AddVonE( V,se,oe,myAsDes);
if (!addedV.IsSame( V ))
mySameDomainVM.Bind (V, addedV);
MV.Add( addedV );
}
}
TopB.SplitSectionEdges();
TopTools_DataMapOfShapeShape SEM; // map split - section edge
TopTools_IndexedMapOfShape ME[2];
TopExp::MapShapes( F1, TopAbs_EDGE, ME[1]);
TopExp::MapShapes( F2, TopAbs_EDGE, ME[0]);
// add section edge to the face it intersects and find
// splits ON that do not have same domain pair
for (i=1;i<=nes;i++) {
const TopoDS_Edge& se = DS.SectionEdge(i);
if (! TopB.IsSplit(se,TopAbs_ON))
continue;
Standard_Integer ancRank = DS.AncestorRank(se);
if (ME[ancRank-1].Contains( se ))
continue; // se is an edge of face it intersects
const TopoDS_Face& F = (ancRank == 1) ? F2 : F1;
// add se to face but dont add twice
TopTools_ListIteratorOfListOfShape itE;
if (myAsDes->HasDescendant( F )) {
for (itE.Initialize( (myAsDes->Descendant( F )) ); itE.More(); itE.Next())
if (se.IsSame( itE.Value() ))
break;
}
if (!itE.More()) {
myAsDes->Add( F, se );
Standard_Real tol, f,l, umin=1e100, umax=-1e100;
Handle(Geom2d_Curve) pc = BRep_Tool::CurveOnSurface( se, F, f,l);
if (pc.IsNull()) {
TopTools_ListIteratorOfListOfShape it( TopB.Splits(se,TopAbs_ON) );
for ( ;it.More();it.Next()) {
const TopoDS_Edge& E = TopoDS::Edge ( it.Value());
BRep_Tool::Range(E, f, l);
umin = Min( umin, f);
umax = Max( umax, l);
}
Handle(Geom_Curve) C3d = BRep_Tool::Curve( se, f, l);
if (umin < umax) // sometimes umin == umax for closed edge
C3d = new Geom_TrimmedCurve( C3d, umin, umax);
pc = TopOpeBRepTool_CurveTool::MakePCurveOnFace (F,C3d,tol);
if (pc.IsNull()) {
MESSAGE (" CANT BUILD PCURVE ");
}
B.UpdateEdge( se, pc, F, tol);
}
}
// to detect splits that do not have same domain pair
TopTools_ListIteratorOfListOfShape it( TopB.Splits(se,TopAbs_ON) );
for ( ;it.More();it.Next()) {
const TopoDS_Edge& S = TopoDS::Edge ( it.Value());
if (SEM.IsBound( S ))
SEM.UnBind( S );
else
SEM.Bind( S, se);
}
}
// store vertices of ON splits and bind section edges to faces
for (i=1;i<=nes;i++) {
const TopoDS_Edge& se = DS.SectionEdge(i);
if (! TopB.IsSplit(se,TopAbs_ON))
continue;
Standard_Integer ancRank = DS.AncestorRank(se);
if (ME[ancRank-1].Contains( se ))
continue; // se is an edge of face it intersects
TopoDS_Face F = (ancRank == 1) ? F2 : F1;
// add vertices of splits
Standard_Boolean added = Standard_False;
TopTools_ListIteratorOfListOfShape it( TopB.Splits(se,TopAbs_ON) );
for ( ;it.More();it.Next()) {
const TopoDS_Edge& S = TopoDS::Edge ( it.Value());
if (!SEM.IsBound( S ))
continue;
added = Standard_True;
mySectionEdgesAD->Add( F, se );
TopoDS_Vertex VS[2];
TopExp::Vertices (S, VS[0], VS[1]);
for (j=0; j<2; ++j) {
if (mySameDomainVM.IsBound( VS[j] ))
VS[j] = TopoDS::Vertex( mySameDomainVM( VS[j] ));
if ( !MV.Contains( VS[j] )) {
// find equal vertex on se - point interference
gp_Pnt P1 = BRep_Tool::Pnt( VS[j] );
TopTools_ListIteratorOfListOfShape itV( myAsDes->Descendant(se) );
for (; itV.More(); itV.Next()) {
V = TopoDS::Vertex( itV.Value() );
gp_Pnt P2 = BRep_Tool::Pnt( V );
if (P1.IsEqual( P2, Precision::Confusion())) {
mySameDomainVM.Bind (VS[j], V);
VS[j] = V;
break;
}
}
if (!itV.More()) // no interferences with edges
myAsDes->Add( se, VS[j]);
}
mySectionEdgesAD->Add( F, VS[j]);
}
mySectionEdgesAD->Add( F, S );
}
if (!added)
mySectionEdgesAD->Add( F, se );
myNewEdges.Add( se );
}
}
//=======================================================================
//function : FacesPartition
//purpose :
//=======================================================================
void Partition_Inter3d::FacesPartition(const TopoDS_Face& F1,
const TopoDS_Face& F2)
//(const TopTools_DataMapOfShapeListOfShape& /*SetOfFaces2*/)
{
TopTools_ListOfShape LInt;
Inter3D (F1,F2,LInt);
StorePart3d (F1,F2,LInt);
}
//=======================================================================
//function : SetDone
//purpose :
//=======================================================================
void Partition_Inter3d::SetDone(const TopoDS_Face& F1,
const TopoDS_Face& F2)
{
if (!myDone.IsBound(F1)) {
TopTools_ListOfShape empty;
myDone.Bind(F1,empty);
}
myDone(F1).Append(F2);
if (!myDone.IsBound(F2)) {
TopTools_ListOfShape empty;
myDone.Bind(F2,empty);
}
myDone(F2).Append(F1);
}
//=======================================================================
//function : IsDone
//purpose :
//=======================================================================
Standard_Boolean Partition_Inter3d::IsDone(const TopoDS_Face& F1,
const TopoDS_Face& F2)
const
{
if (myDone.IsBound(F1)) {
TopTools_ListIteratorOfListOfShape it (myDone(F1));
for (; it.More(); it.Next()) {
if (it.Value().IsSame(F2)) return Standard_True;
}
}
return Standard_False;
}
//=======================================================================
//function : StorePart3d
//purpose :
//=======================================================================
void Partition_Inter3d::StorePart3d(const TopoDS_Face& F1,
const TopoDS_Face& F2,
const TopTools_ListOfShape& LInt)
{
if (!LInt.IsEmpty()) {
myAsDes->Add( F1,LInt);
myAsDes->Add( F2,LInt);
TopTools_ListIteratorOfListOfShape it(LInt);
for (; it.More(); it.Next()) {
TopoDS_Edge E = TopoDS::Edge(it.Value());
BRep_Builder B;
B.SameParameter(E,Standard_False);
BRepLib::SameParameter(E,1.0e-7);
myNewEdges.Add(E);
}
}
SetDone(F1,F2);
}
//=======================================================================
//function : TouchedFaces
//purpose :
//=======================================================================
TopTools_MapOfShape& Partition_Inter3d::TouchedFaces()
{
return myTouched;
}
//=======================================================================
//function : AsDes
//purpose :
//=======================================================================
Handle(BRepAlgo_AsDes) Partition_Inter3d::AsDes() const
{
return myAsDes;
}
//=======================================================================
//function : NewEdges
//purpose :
//=======================================================================
TopTools_MapOfShape& Partition_Inter3d::NewEdges()
{
return myNewEdges;
}
//=======================================================================
//function : Affiche
//purpose :
//=======================================================================
void Partition_Inter3d::Affiche(const TopTools_ListOfShape& SetOfFaces) const
{
#ifdef DEB
char PSection[1024];
char *section=PSection;
Standard_Integer i = 0;
Standard_Real j=1;
TopTools_ListOfShape aList;
TopTools_ListIteratorOfListOfShape it;
for (it.Initialize(SetOfFaces); it.More(); it.Next()) {
const TopoDS_Shape& OS = it.Value();
aList=myAsDes->Descendant(OS);
MESSAGE ( " the number of items stored in the list " << j << " : " << aList.Extent() )
j++;
TopTools_ListIteratorOfListOfShape itaList;
for (itaList.Initialize(aList); itaList.More(); itaList.Next()) {
const TopoDS_Shape& SS = itaList.Value();
i++;
sprintf(PSection,"section_%d",i);
DBRep::Set(section,SS);
}
}
#endif
}
//=======================================================================
//function : SameDomain
//purpose :
//=======================================================================
const TopTools_ListOfShape& Partition_Inter3d::SameDomain(const TopoDS_Face& F) const
{
if (mySameDomainFM.IsBound( F ))
return mySameDomainFM (F);
static TopTools_ListOfShape empty;
return empty;
}
//=======================================================================
//function : HasSameDomainF
//purpose : Return true if F has same domain faces
//=======================================================================
Standard_Boolean Partition_Inter3d::HasSameDomainF(const TopoDS_Shape& F) const
{
return mySameDomainFM.IsBound( F );
}
//=======================================================================
//function : IsSameDomain
//purpose : Return true if F1 and F2 are same domain faces
//=======================================================================
Standard_Boolean Partition_Inter3d::IsSameDomainF(const TopoDS_Shape& F1,
const TopoDS_Shape& F2) const
{
if (mySameDomainFM.IsBound( F1 )) {
TopTools_ListIteratorOfListOfShape it (mySameDomainFM( F1 ));
for (; it.More(); it.Next())
if (F2.IsSame( it.Value()))
return Standard_True;
}
return F1.IsSame( F2 );
}
//=======================================================================
//function : ReplaceSameDomainV
//purpose : return same domain vertex of V if it was replaced
// and make this vertex to be on E too, else return V
//=======================================================================
TopoDS_Vertex Partition_Inter3d::ReplaceSameDomainV(const TopoDS_Vertex& V,
const TopoDS_Edge& E) const
{
TopoDS_Vertex SDV = V;
if (mySameDomainVM.IsBound( V )) {
TopoDS_Vertex V1,V2;
TopExp::Vertices(E,V1,V2);
Standard_Boolean isClosed = V1.IsSame( V2 ) && V.IsSame(V1);
SDV = TopoDS::Vertex( mySameDomainVM(V) );
Standard_Real tol = BRep_Tool::Tolerance( V );
BRep_Builder B;
SDV.Orientation( V.Orientation());
if (isClosed) {
Standard_Real f, l;
BRep_Tool::Range (E, f, l);
Standard_Boolean isFirst = IsEqual( BRep_Tool::Parameter(V,E), f );
B.UpdateVertex(SDV, (isFirst ? f : l), E, tol);
SDV.Reverse();
B.UpdateVertex(SDV, (isFirst ? l : f), E, tol);
}
else
B.UpdateVertex (SDV, BRep_Tool::Parameter(V,E), E, tol);
}
return SDV;
}
//=======================================================================
//function : SectionEdgesAD
//purpose :
//=======================================================================
Handle(BRepAlgo_AsDes) Partition_Inter3d::SectionEdgesAD() const
{
return mySectionEdgesAD;
}
//=======================================================================
//function : IsSectionEdge
//purpose : return True if E is an edge of a face and it
// intersects an other face
//=======================================================================
Standard_Boolean
Partition_Inter3d::IsSectionEdge(const TopoDS_Edge& E) const
{
return mySectionEdgesAD->HasAscendant(E);
}
//=======================================================================
//function : HasSectionEdge
//purpose : return True if an edge of F intersects an other
// face or F is intersected by edge of an other face
//=======================================================================
Standard_Boolean
Partition_Inter3d::HasSectionEdge(const TopoDS_Face& F) const
{
return mySectionEdgesAD->HasDescendant(F);
}
//=======================================================================
//function : IsSplitOn
//purpose : return True if NewE is split of OldE on F
//=======================================================================
Standard_Boolean
Partition_Inter3d::IsSplitOn(const TopoDS_Edge& NewE,
const TopoDS_Edge& OldE,
const TopoDS_Face& F) const
{
if (! mySectionEdgesAD->HasDescendant(F))
return Standard_False;
TopTools_ListIteratorOfListOfShape itE ( mySectionEdgesAD->Descendant(F) );
for ( ; itE.More(); itE.Next()) {
if ( itE.Value().ShapeType() != TopAbs_EDGE ||
! OldE.IsSame ( itE.Value() ))
continue;
// an edge encountered, its vertices and a split come next
itE.Next();
if (!itE.More()) break;
const TopoDS_Shape& V3 = itE.Value();
if (V3.ShapeType() != TopAbs_VERTEX) continue;
itE.Next();
if (!itE.More()) break;
const TopoDS_Shape& V4 = itE.Value();
if (V4.ShapeType() != TopAbs_VERTEX) continue;
TopoDS_Vertex V1, V2;
TopExp::Vertices( OldE, V1, V2);
if ( V1.IsSame(V2) &&
(V1.IsSame(V3) || V1.IsSame(V4)) ) {
// closed old edge; use the split for the test
itE.Next();
if (!itE.More()) break;
const TopoDS_Edge& split = TopoDS::Edge( itE.Value() );
// check distance at middle point of NewE
Standard_Real f1,l1, f2,l2;
Handle(Geom2d_Curve) PC1 = BRep_Tool::CurveOnSurface( split, F ,f1,l1);
if (!PC1.IsNull()) {
Handle(Geom2d_Curve) PC2 = BRep_Tool::CurveOnSurface(NewE, F ,f2,l2);
gp_Pnt2d P = PC2->Value( 0.5*(f2+l2) );
Geom2dAPI_ProjectPointOnCurve proj (P, PC1, f1, l1);
if (proj.NbPoints() &&
proj.LowerDistance() <= Precision::Confusion())
return Standard_True;
}
else {
Handle(Geom_Curve) C1 = BRep_Tool::Curve( split ,f1,l1);
Handle(Geom_Curve) C2 = BRep_Tool::Curve( NewE ,f2,l2);
gp_Pnt P = C2->Value( 0.5*(f2+l2) );
GeomAPI_ProjectPointOnCurve proj (P, C1, f1, l1);
if (proj.NbPoints() &&
proj.LowerDistance() <= Precision::Confusion())
return Standard_True;
}
}
else {
Standard_Real u3 = BRep_Tool::Parameter( TopoDS::Vertex(V3), OldE);
Standard_Real u4 = BRep_Tool::Parameter( TopoDS::Vertex(V4), OldE);
Standard_Real f,l, u;
BRep_Tool::Range( NewE, f,l);
u = 0.5*(f+l);
f = Min(u3,u4);
l = Max(u3,u4);
if (u <= l && u >= f)
return Standard_True;
}
}
return Standard_False;
}
//=======================================================================
//function : SectionEdgeFaces
//purpose : return faces cut by section edge
//=======================================================================
const TopTools_ListOfShape&
Partition_Inter3d::SectionEdgeFaces(const TopoDS_Edge& SecE) const
{
return mySectionEdgesAD->Ascendant( SecE );
}
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