src/HYDROData/HYDROData_PolylineOperator.cxx

   1 // Copyright (C) 2014-2015  EDF-R&D
   2 // This library is free software; you can redistribute it and/or
   3 // modify it under the terms of the GNU Lesser General Public
   4 // License as published by the Free Software Foundation; either
   5 // version 2.1 of the License, or (at your option) any later version.
   6 //
   7 // This library is distributed in the hope that it will be useful,
   8 // but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  10 // Lesser General Public License for more details.
  11 //
  12 // You should have received a copy of the GNU Lesser General Public
  13 // License along with this library; if not, write to the Free Software
  14 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  15 //
  16 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  17 //
  18
  19 #include <HYDROData_PolylineOperator.h>
  20 #include <HYDROData_Document.h>
  21 #include <HYDROData_TopoCurve.h>
  22
  23 #include <CurveCreator_Utils.hxx>
  24
  25 #include <BRepAdaptor_Curve.hxx>
  26 #include <BRep_Builder.hxx>
  27 #include <BRep_Tool.hxx>
  28 #include <BRepBuilderAPI_MakeEdge2d.hxx>
  29 #include <BRepBuilderAPI_MakeEdge.hxx>
  30 #include <BRepBuilderAPI_MakeWire.hxx>
  31 #include <Extrema_ExtCC.hxx>
  32 #include <Extrema_ExtPC.hxx>
  33 #include <GeomAPI_Interpolate.hxx>
  34 #include <NCollection_Vector.hxx>
  35 #include <Precision.hxx>
  36 #include <ShapeAnalysis_TransferParametersProj.hxx>
  37 #include <ShapeBuild_Edge.hxx>
  38 #include <TColgp_Array1OfVec.hxx>
  39 #include <TColgp_HArray1OfPnt.hxx>
  40 #include <TColStd_HArray1OfBoolean.hxx>
  41 #include <TopoDS.hxx>
  42 #include <TopoDS_Edge.hxx>
  43 #include <TopoDS_Wire.hxx>
  44 #include <TopExp.hxx>
  45 #include <TopExp_Explorer.hxx>
  46 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
  47 #include <QString>
  48
  49 template<class T> void append( std::vector<T>& theList, const std::vector<T>& theList2 )
  50 {
  51   int aSize = theList.size();
  52   int aNewSize = aSize + theList2.size();
  53
  54   if( aSize==aNewSize )
  55     return;
  56
  57   theList.resize( aNewSize );
  58   for( int i=aSize, j=0; i<aNewSize; i++, j++ )
  59     theList[i] = theList2[j];
  60 }
  61
  62 bool HYDROData_PolylineOperator::Split( const Handle( HYDROData_Document )& theDoc,
  63                                         const Handle( HYDROData_PolylineXY )& thePolyline,
  64                                         const gp_Pnt2d& thePoint,
  65                                         double theTolerance ) const
  66 {
  67   if (thePolyline.IsNull())
  68   {
  69     return false;
  70   }
  71
  72   std::vector<gp_Pnt2d> aPointsList( 1 );
  73   aPointsList[0] = thePoint;
  74   std::vector<TopoDS_Wire> aCurves;
  75   GetWires(thePolyline, aCurves);
  76   bool isOK = true;
  77   for( int i=0, n=aCurves.size(); i<n; i++ )
  78   {
  79     std::vector<TopoDS_Shape> aCurvesList;
  80     Split(aCurves[i], thePoint, theTolerance, aCurvesList);
  81     bool isLocalOK = CreatePolylines( theDoc, thePolyline->GetName(), aCurvesList, true );
  82     isOK = isOK && isLocalOK;
  83   }
  84   return isOK;
  85 }
  86
  87 bool HYDROData_PolylineOperator::Split( const Handle( HYDROData_Document )& theDoc,
  88               const Handle( HYDROData_PolylineXY )& thePolyline,
  89               const Handle( HYDROData_PolylineXY )& theTool,
  90               double theTolerance ) const
  91 {
  92   if (thePolyline.IsNull() || theTool.IsNull())
  93   {
  94     return false;
  95   }
  96
  97   HYDROData_SequenceOfObjects aSeq;
  98   aSeq.Append( theTool );
  99   return split( theDoc, thePolyline, aSeq, theTolerance, -1 );
 100 }
 101
 102 bool HYDROData_PolylineOperator::Split( const Handle( HYDROData_Document )& theDoc,
 103                                         const HYDROData_SequenceOfObjects& thePolylines,
 104                                         double theTolerance )
 105 {
 106   int f = thePolylines.Lower(), l = thePolylines.Upper();
 107   for( int i=f; i<=l; i++ )
 108   {
 109     Handle( HYDROData_PolylineXY ) aPolyline = Handle( HYDROData_PolylineXY )::DownCast( thePolylines.Value( i ) );
 110     if( !split( theDoc, aPolyline, thePolylines, theTolerance, i ) )
 111       return false;
 112   }
 113   return true;
 114 }
 115
 116 bool HYDROData_PolylineOperator::Merge( const Handle( HYDROData_Document )& theDoc,
 117                                         const QString& theName,
 118                                         const HYDROData_SequenceOfObjects& thePolylines,
 119                                         bool isConnectByNewSegment,
 120                                         double theTolerance )
 121 {
 122   std::deque<HYDROData_TopoCurve> aMergedCurves;
 123   HYDROData_SequenceOfObjects::Iterator aPIt(thePolylines);
 124   for (; aPIt.More(); aPIt.Next())
 125   {
 126     Handle(HYDROData_PolylineXY) aPolyline =
 127       Handle(HYDROData_PolylineXY)::DownCast(aPIt.Value());
 128     std::vector<TopoDS_Wire> aWires;
 129     GetWires(aPolyline, aWires);
 130     for (std::vector<TopoDS_Wire>::const_iterator aWIt = aWires.begin(),
 131       aLastWIt = aWires.end(); aWIt != aLastWIt; ++aWIt)
 132     {
 133       const Standard_Boolean aResult = !isConnectByNewSegment ?
 134         HYDROData_TopoCurve::Merge(theTolerance, *aWIt, aMergedCurves) :
 135         HYDROData_TopoCurve::Connect(theTolerance, *aWIt, aMergedCurves);
 136       if (!aResult)
 137       {
 138         return false;
 139       }
 140     }
 141   }
 142
 143   TopoDS_Compound aWireSet;
 144   BRep_Builder aBuilder;
 145   aBuilder.MakeCompound(aWireSet);
 146   std::deque<HYDROData_TopoCurve>::iterator aCIt = aMergedCurves.begin();
 147   std::deque<HYDROData_TopoCurve>::iterator aLastCIt = aMergedCurves.end();
 148   for (; aCIt != aLastCIt; ++aCIt)
 149   {
 150     if (!aCIt->IsEmpty())
 151     {
 152       aBuilder.Add(aWireSet, aCIt->Wire());
 153     }
 154   }
 155
 156   std::vector<TopoDS_Shape> aPolylines(1);
 157   aPolylines[0] = aWireSet;
 158   CreatePolylines(theDoc, theName, aPolylines, false);
 159   return true;
 160 }
 161
 162 bool HYDROData_PolylineOperator::split( const Handle( HYDROData_Document )& theDoc,
 163                                         const Handle( HYDROData_PolylineXY )& thePolyline,
 164                                         const HYDROData_SequenceOfObjects& theTools,
 165                                         double theTolerance,
 166                                         int theIgnoreIndex ) const
 167 {
 168   if (thePolyline.IsNull())
 169   {
 170     return false;
 171   }
 172
 173   std::vector<TopoDS_Wire> aCurves;
 174   GetWires(thePolyline, aCurves);
 175   std::vector<TopoDS_Wire> aToolCurves;
 176   for( int i=theTools.Lower(), n=theTools.Upper(); i<=n; i++ )
 177     if( i!=theIgnoreIndex )
 178     {
 179       Handle( HYDROData_PolylineXY ) aToolPolyline =
 180         Handle( HYDROData_PolylineXY )::DownCast( theTools.Value( i ) );
 181       if (!aToolPolyline.IsNull())
 182       {
 183         std::vector<TopoDS_Wire> aTCurves;
 184         GetWires(aToolPolyline, aTCurves);
 185         append( aToolCurves, aTCurves);
 186       }
 187     }
 188
 189   if (aToolCurves.empty())
 190   {
 191     return false;
 192   }
 193
 194   const int aPSCount = aCurves.size();
 195   const int aTSCount = aToolCurves.size();
 196   std::vector<TopoDS_Shape> aResult;
 197   for (int aPSI = 0; aPSI < aPSCount; ++aPSI)
 198   {
 199     HYDROData_TopoCurve aCurve;
 200     if (!aCurve.Initialize(aCurves[aPSI]))
 201     {
 202       continue;
 203     }
 204
 205     std::deque<std::list<double> > aParams;
 206     for (int aTSI = 0; aTSI < aTSCount; ++aTSI)
 207     {
 208       aCurve.Intersect(aToolCurves[aTSI], aParams);
 209     }
 210
 211     std::deque<HYDROData_TopoCurve> aSplittedCurves;
 212     aCurve.Cut(aParams, aSplittedCurves);
 213     std::deque<HYDROData_TopoCurve>::const_iterator aCIt =
 214       aSplittedCurves.begin();
 215     std::deque<HYDROData_TopoCurve>::const_iterator aLastCIt =
 216       aSplittedCurves.end();
 217     for (; aCIt != aLastCIt; ++aCIt)
 218     {
 219       aResult.push_back(aCIt->Wire());
 220     }
 221   }
 222
 223   CreatePolylines(theDoc, thePolyline->GetName(), aResult, true);
 224   return true;
 225 }
 226
 227 void HYDROData_PolylineOperator::GetWires(
 228   const Handle( HYDROData_PolylineXY )& thePolyline,
 229   std::vector<TopoDS_Wire>& theWires)
 230 {
 231   TopoDS_Shape aShape = thePolyline->GetShape();
 232   if( aShape.ShapeType()==TopAbs_WIRE )
 233   {
 234     theWires.push_back( TopoDS::Wire( aShape ) );
 235   }
 236   else
 237   {
 238     TopExp_Explorer anExp( aShape, TopAbs_WIRE );
 239     for( ; anExp.More(); anExp.Next() )
 240     {
 241       theWires.push_back( TopoDS::Wire( anExp.Current() ) );
 242     }
 243   }
 244 }
 245
 246 void HYDROData_PolylineOperator::Split(
 247   const TopoDS_Wire& theWire,
 248   const gp_Pnt2d& thePoint,
 249   double theTolerance,
 250   std::vector<TopoDS_Shape>& theWires)
 251 {
 252   HYDROData_TopoCurve aCurve;
 253   if (!aCurve.Initialize(theWire))
 254   {
 255     theWires.push_back(theWire);
 256     return;
 257   }
 258
 259   const gp_XYZ aP(thePoint.X(), thePoint.Y(), 0);
 260   std::list<TopoDS_Edge>::const_iterator aEPos;
 261   double aParam;
 262   aCurve.Project(aP, aEPos, aParam);
 263   HYDROData_TopoCurve aCurve1, aCurve2;
 264   aCurve.Cut(aEPos, aParam, aCurve1, aCurve2);
 265   theWires.push_back(aCurve1.Wire());
 266   if (!aCurve2.IsEmpty())
 267   {
 268     theWires.push_back(aCurve2.Wire());
 269   }
 270 }
 271
 272 bool HYDROData_PolylineOperator::CreatePolylines( const Handle( HYDROData_Document )& theDoc,
 273                                                   const QString& theNamePrefix,
 274                                                   const std::vector<TopoDS_Shape>& theShapes,
 275                                                   bool isUseIndices )
 276 {
 277   if( theDoc.IsNull() )
 278     return false;
 279
 280   int n = theShapes.size();
 281   int anIndex = 1;
 282   for( int i=0; i<n; i++ )
 283   {
 284     Handle( HYDROData_PolylineXY ) aPolyline =
 285       Handle( HYDROData_PolylineXY )::DownCast( theDoc->CreateObject( KIND_POLYLINEXY ) );
 286     if( aPolyline.IsNull() )
 287       return false;
 288
 289     aPolyline->SetShape( theShapes[i] );
 290
 291     if( isUseIndices )
 292     {
 293       QString aNewName = theNamePrefix + "_" + QString::number( anIndex );
 294       if( theDoc->FindObjectByName( aNewName ).IsNull() )  // the object with such a name is not found
 295         aPolyline->SetName( aNewName );
 296       anIndex++;
 297     }
 298     else
 299     {
 300       aPolyline->SetName( theNamePrefix );
 301     }
 302   }
 303   return true;
 304 }
 305
 306 double HYDROData_PolylineOperator::ReduceDeflection(
 307   const double theDeflection,
 308   HYDROData_TopoCurve& theCurve,
 309   int& thePieceCount)
 310 {
 311   // Construct the approximating B-spline.
 312   std::list<gp_XYZ> aPs;
 313   if (!theCurve.ValuesInKnots(aPs))
 314   {
 315     return -1;
 316   }
 317
 318   Handle(TColgp_HArray1OfPnt) aPs2 = new TColgp_HArray1OfPnt(1, aPs.size());
 319   {
 320     std::list<gp_XYZ>::const_iterator aLastPIt = aPs.end();
 321     std::list<gp_XYZ>::const_iterator aPIt = aPs.begin();
 322     for (int aPN = 1; aPIt != aLastPIt; ++aPN, ++aPIt)
 323     {
 324       aPs2->SetValue(aPN, *aPIt);
 325     }
 326   }
 327   Handle(Geom_BSplineCurve) aBSpline2;
 328   const bool isClosed = theCurve.IsClosed();
 329   if (!CurveCreator_Utils::constructBSpline(aPs2, isClosed, aBSpline2))
 330   {
 331     return -1;
 332   }
 333
 334   // Calculate the piece deflections.
 335   std::deque<double> aSqDefls;
 336   double aMaxSqDefl = 0;
 337   std::list<TopoDS_Edge>& aEdges = theCurve.Edges();
 338   std::list<TopoDS_Edge>::const_iterator aLastEIt = aEdges.end();
 339   {
 340     std::list<TopoDS_Edge>::const_iterator aEIt = aEdges.begin();
 341     for (int aPrevKCount = 0; aEIt != aLastEIt; ++aEIt)
 342     {
 343       TopLoc_Location aLoc;
 344       double aParams[2];
 345       Handle(Geom_BSplineCurve) aBSpline = Handle(Geom_BSplineCurve)::DownCast(
 346         BRep_Tool::Curve(*aEIt, aLoc, aParams[0], aParams[1]));
 347       const int aKCount = aBSpline->NbKnots();
 348       for (int aKN = 1; aKN < aKCount; ++aKN)
 349       {
 350         const double aParam =
 351           (aBSpline->Knot(aKN) + aBSpline->Knot(aKN + 1)) * 0.5;
 352         const double aParam2 = (aBSpline2->Knot(aPrevKCount + aKN) +
 353           aBSpline2->Knot(aPrevKCount + aKN + 1)) * 0.5;
 354         const double aSqDefl = Abs(aBSpline->Value(aParam).
 355           SquareDistance(aBSpline2->Value(aParam2)));
 356         aSqDefls.push_back(aSqDefl);
 357         if (aMaxSqDefl < aSqDefl)
 358         {
 359           aMaxSqDefl = aSqDefl;
 360         }
 361       }
 362       aPrevKCount += aKCount - 1;
 363     }
 364   }
 365
 366   // Check whether the reducing is necessary.
 367   const double aMaxDefl = Sqrt(aMaxSqDefl);
 368   if (aMaxDefl <= theDeflection)
 369   {
 370     return aMaxDefl;
 371   }
 372
 373   // Reduce the deflections.
 374   const double aThresSqDefl =
 375     Max(aMaxSqDefl * 0.25, theDeflection * theDeflection);
 376   std::list<TopoDS_Edge>::iterator aEIt = aEdges.begin();
 377   std::deque<double>::const_iterator aSqDIt = aSqDefls.begin();
 378   thePieceCount = 0;
 379   for (; aEIt != aLastEIt; ++aEIt)
 380   {
 381     TopLoc_Location aLoc;
 382     double aParams[2];
 383     Handle(Geom_BSplineCurve) aBSpline = Handle(Geom_BSplineCurve)::DownCast(
 384       BRep_Tool::Curve(*aEIt, aLoc, aParams[0], aParams[1]));
 385     Handle(Geom_BSplineCurve) aBSpline2 =
 386       Handle(Geom_BSplineCurve)::DownCast(aBSpline->Copy());
 387     const int aKCount = aBSpline->NbKnots();
 388     for (int aKN = 1; aKN < aKCount; ++aSqDIt, ++aKN)
 389     {
 390       if (*aSqDIt > aThresSqDefl)
 391       {
 392         aBSpline2->InsertKnot(
 393           (aBSpline->Knot(aKN) + aBSpline->Knot(aKN + 1)) * 0.5);
 394       }
 395     }
 396     TopoDS_Edge aEdge;
 397     BRep_Builder().MakeEdge(aEdge, aBSpline2, Precision::Confusion());
 398     BRep_Builder().Add(aEdge, TopExp::FirstVertex(*aEIt));
 399     BRep_Builder().Add(aEdge, TopExp::LastVertex(*aEIt));
 400     thePieceCount += aBSpline2->NbKnots() - 1;
 401     *aEIt = aEdge;
 402   }
 403   return aMaxDefl;
 404 }