src/HYDROCurveCreator/CurveCreator_Utils.cxx

   1 // Copyright (C) 2013  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "CurveCreator_Utils.h"
  21 #include "CurveCreator.hxx"
  22 #include "CurveCreator_UtilsICurve.hxx"
  23
  24 #include <GEOMUtils.hxx>
  25
  26 #include <gp_Pln.hxx>
  27
  28 #include <TopoDS.hxx>
  29 #include <TopoDS_Vertex.hxx>
  30 #include <TopoDS_Wire.hxx>
  31 #include <TopoDS_Edge.hxx>
  32 #include <TopoDS_Compound.hxx>
  33
  34 #include <AIS_ListOfInteractive.hxx>
  35 #include <AIS_ListIteratorOfListOfInteractive.hxx>
  36 #include <AIS_Shape.hxx>
  37 #include <AIS_Point.hxx>
  38 #include <AIS_Line.hxx>
  39 #include <AIS_Trihedron.hxx>
  40
  41 #include <Geom_Point.hxx>
  42 #include <Geom_BSplineCurve.hxx>
  43 #include <Geom_Line.hxx>
  44
  45 #include <TopExp_Explorer.hxx>
  46 #include <GeomAPI_ProjectPointOnCurve.hxx>
  47 #include <SelectMgr_EntityOwner.hxx>
  48
  49 #include <BRep_Tool.hxx>
  50 #include <BRep_Builder.hxx>
  51 #include <BRepBuilderAPI_MakeVertex.hxx>
  52 #include <BRepBuilderAPI_MakeEdge.hxx>
  53 #include <BRepBuilderAPI_MakeWire.hxx>
  54
  55 #include <TColgp_HArray1OfPnt.hxx>
  56 #include <GeomAPI_Interpolate.hxx>
  57
  58 #include <ProjLib.hxx>
  59 #include <ElSLib.hxx>
  60
  61 #include "CurveCreator_ICurve.hxx"
  62
  63 const double LOCAL_SELECTION_TOLERANCE = 0.0001;
  64 const int    SCENE_PIXEL_TOLERANCE = 10;
  65
  66 //=======================================================================
  67 // function : ConvertClickToPoint()
  68 // purpose  : Returns the point clicked in 3D view
  69 //=======================================================================
  70 void CurveCreator_Utils::ConvertPointToClick( const gp_Pnt& thePoint,
  71                                               Handle(V3d_View) theView,
  72                                               int& x, int& y )
  73 {
  74   theView->Convert(thePoint.X(), thePoint.Y(), thePoint.Z(), x, y );
  75 }
  76
  77
  78 //=======================================================================
  79 // function : ConvertClickToPoint()
  80 // purpose  : Returns the point clicked in 3D view
  81 //=======================================================================
  82 gp_Pnt CurveCreator_Utils::ConvertClickToPoint( int x, int y, Handle(V3d_View) aView )
  83 {
  84   return GEOMUtils::ConvertClickToPoint( x, y, aView );
  85 }
  86
  87 void CurveCreator_Utils::constructShape( const CurveCreator_ICurve* theCurve,
  88                                          TopoDS_Shape& theShape )
  89 {
  90   BRep_Builder aBuilder;
  91   TopoDS_Compound aComp;
  92   aBuilder.MakeCompound( aComp );
  93   for( int iSection = 0 ; iSection < theCurve->getNbSections() ; iSection++ )
  94   {
  95     int theISection = iSection;
  96
  97     CurveCreator::SectionType aSectType = theCurve->getSectionType( theISection );
  98     int aPointSize = theCurve->getNbPoints( theISection );
  99     bool aSectIsClosed = theCurve->isClosed( theISection );
 100     bool isPolyline = aSectType == CurveCreator::Polyline;
 101     int iPoint = 0;
 102     gp_Pnt aPrevPoint, aPoint;
 103     if ( aPointSize == 1 ) {
 104       CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 105       TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 106       aBuilder.Add( aComp, aVertex );
 107     }
 108     else if ( aPointSize > 1 ) {
 109       Handle(TColgp_HArray1OfPnt) aHCurvePoints = new TColgp_HArray1OfPnt (1, aPointSize);
 110       int aHIndex = 1;
 111
 112       TopoDS_Edge aPointEdge;
 113       TopoDS_Vertex aVertex;
 114       CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 115       aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 116       aBuilder.Add( aComp, aVertex );
 117       aHCurvePoints->SetValue(aHIndex++, aPoint);
 118       aPrevPoint = aPoint;
 119       iPoint++;
 120       for( ; iPoint < aPointSize; iPoint++ ) {
 121         CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 122         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 123         aBuilder.Add( aComp, aVertex );
 124         aHCurvePoints->SetValue(aHIndex++, aPoint);
 125         if ( isPolyline ) {
 126           aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 127           aBuilder.Add( aComp, aPointEdge );
 128         }
 129         aPrevPoint = aPoint;
 130       }
 131       if( aSectIsClosed && ( aPointSize > 2 ) ) {
 132         CurveCreator_UtilsICurve::getPoint( theCurve, theISection, 0, aPoint );
 133         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 134         aBuilder.Add( aComp, aVertex );
 135         if ( isPolyline ) {
 136           aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 137           aBuilder.Add( aComp, aPointEdge );
 138         }
 139       }
 140       if( !isPolyline ) {
 141         // compute BSpline
 142         Handle(Geom_BSplineCurve) aBSplineCurve;
 143         GeomAPI_Interpolate aGBC(aHCurvePoints, aSectIsClosed, gp::Resolution());
 144         aGBC.Perform();
 145         if ( aGBC.IsDone() )
 146           aBSplineCurve = aGBC.Curve();
 147         TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSplineCurve ).Edge();
 148         TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();
 149         aBuilder.Add( aComp, aWire );
 150       }
 151     }
 152   }
 153   theShape = aComp;
 154 }
 155
 156 class ComparePnt
 157 {
 158 public:
 159   ComparePnt( const gp_Pnt& thePoint ) : myPoint( thePoint) {};
 160   ~ComparePnt() {}
 161
 162   bool operator < ( const ComparePnt& theOtherPoint ) const
 163   {
 164     bool isLess = myPoint.X() < theOtherPoint.myPoint.X();
 165     if ( !isLess && myPoint.X() == theOtherPoint.myPoint.X() ) {
 166       isLess = myPoint.Y() < theOtherPoint.myPoint.Y();
 167       if ( !isLess && myPoint.Y() == theOtherPoint.myPoint.Y() )
 168         isLess = myPoint.Z() < theOtherPoint.myPoint.Z();
 169     }
 170     return isLess;
 171   }
 172 private:
 173   gp_Pnt myPoint;
 174 };
 175
 176 std::list<float> CurveCreator_Utils::getSelectedPoints( Handle(AIS_InteractiveContext) theContext )
 177 {
 178   std::list<float> aSelectedPoints;
 179
 180   gp_Pnt aPnt;
 181   std::map<ComparePnt, int> aPntMap;
 182
 183   for ( theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected() ) {
 184     TopoDS_Vertex aVertex;
 185     TopoDS_Shape aShape = theContext->SelectedShape();
 186     if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
 187       aVertex = TopoDS::Vertex( theContext->SelectedShape() );
 188
 189     if ( aVertex.IsNull() )
 190       continue;
 191     aPnt = BRep_Tool::Pnt( aVertex );
 192     if ( aPntMap.find( aPnt ) != aPntMap.end() )
 193       continue;
 194     aPntMap[aPnt] = 0;
 195     aSelectedPoints.push_back( aPnt.X() );
 196     aSelectedPoints.push_back( aPnt.Y() );
 197     aSelectedPoints.push_back( aPnt.Z() );
 198   }
 199
 200   return aSelectedPoints;
 201 }
 202 //=======================================================================
 203 // function : setLocalPointContext
 204 // purpose  : Open/close the viewer local context
 205 //=======================================================================
 206 //#define USE_GLOBAL_SELECTION
 207 void CurveCreator_Utils::setLocalPointContext(
 208                                               Handle(AIS_InteractiveContext) theContext,
 209                                               const bool theOpen )
 210 {
 211 #ifdef USE_GLOBAL_SELECTION
 212   return;
 213 #endif
 214   if ( !theContext )
 215     return;
 216
 217   if ( theOpen ) {
 218     // Open local context if there is no one
 219     if ( !theContext->HasOpenedContext() ) {
 220       theContext->ClearCurrents( false );
 221       theContext->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
 222     }
 223     AIS_ListOfInteractive aList;
 224     theContext->DisplayedObjects( aList );
 225     int aLSize = 0;
 226     for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
 227       aLSize++;
 228
 229     for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
 230     {
 231       Handle(AIS_InteractiveObject) anAIS = it.Value();
 232       if ( !anAIS.IsNull() )
 233       {
 234         if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
 235         {
 236           theContext->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
 237           //theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_WIRE ) );
 238           theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_VERTEX ) );
 239         }
 240         else if ( anAIS->DynamicType() != STANDARD_TYPE(AIS_Trihedron) )
 241         {
 242           theContext->Load( anAIS, -1/*selection mode*/, false/*allow decomposition*/ );
 243           theContext->Activate( anAIS, TopAbs_VERTEX );
 244         }
 245       }
 246       continue;
 247     }
 248   }
 249   else {
 250     if ( theContext->HasOpenedContext() )
 251       theContext->CloseAllContexts();
 252   }
 253 }
 254
 255 bool CurveCreator_Utils::getNeighbourPoints( Handle(AIS_InteractiveContext) theContext,
 256                                              Handle(V3d_View) theView,
 257                                              const int theX, const int theY,
 258                                              gp_Pnt& thePoint, gp_Pnt& thePoint1,
 259                                              gp_Pnt& thePoint2 )
 260 {
 261   bool isFoundPoint = false;
 262   if ( theContext.IsNull() )
 263     return isFoundPoint;
 264
 265   for ( theContext->InitSelected(); theContext->MoreSelected() && !isFoundPoint;
 266         theContext->NextSelected() ) {
 267     TopoDS_Shape aTShape = theContext->SelectedShape();
 268     if ( !aTShape.IsNull() && aTShape.ShapeType() == TopAbs_VERTEX )
 269       continue;
 270     else {
 271       Handle(SelectMgr_EntityOwner) anOwner = theContext->SelectedOwner();
 272       if ( anOwner.IsNull() )
 273         continue;
 274       const TopLoc_Location& aLocation = anOwner->Location();
 275       Handle(AIS_InteractiveObject) anAIS =
 276                         Handle(AIS_InteractiveObject)::DownCast( anOwner->Selectable() );
 277       isFoundPoint = CurveCreator_Utils::pointOnObject( theView, anAIS, theX, theY, thePoint,
 278                                                         thePoint1, thePoint2 );
 279     }
 280   }
 281   return isFoundPoint;
 282 }
 283
 284 bool CurveCreator_Utils::pointOnObject( Handle(V3d_View) theView,
 285                                         Handle(AIS_InteractiveObject) theObject,
 286                                         const int theX, const int theY,
 287                                         gp_Pnt& thePoint,
 288                                         gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
 289 {
 290   bool isFound = false;
 291
 292   if ( theObject.IsNull() || theView.IsNull() )
 293     return isFound;
 294
 295   gp_Pnt aPoint;
 296   Standard_Real aParameter;
 297   gp_Pnt aPnt1, aPnt2;
 298   Handle(AIS_Line) aLine = Handle(AIS_Line)::DownCast( theObject );
 299   if ( !aLine.IsNull() ) {
 300     const Handle(Geom_Line) aGLine = aLine->Line();
 301     isFound = hasProjectPointOnCurve( theView, theX, theY, aGLine, aParameter );
 302     if ( isFound ) {
 303       aPoint = aGLine->Value( aParameter );
 304
 305       Handle(Geom_Point) aPStart;
 306       Handle(Geom_Point) aPEnd;
 307       aLine->Points( aPStart, aPEnd );
 308       aPnt1 = aPStart->Pnt();
 309       aPnt2 = aPEnd->Pnt();
 310
 311       // in case of Geom line a projection is performed to the infinite line,
 312       // so it is necessary to bound it by the line size
 313       Bnd_Box aLineBox;
 314       aLineBox.Set( aPnt1, gp_Vec( aPnt1, aPnt2 ) );
 315       isFound = !aLineBox.IsOut( aPoint );
 316     }
 317   }
 318   else {
 319     Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
 320     if ( !aShape.IsNull() ) {
 321       const TopoDS_Wire& aWire = TopoDS::Wire( aShape->Shape() );
 322       if ( !aWire.IsNull() ) {
 323         TopExp_Explorer anExp( aWire, TopAbs_EDGE );
 324         for ( ; anExp.More(); anExp.Next())
 325         {
 326           const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
 327           if ( !anEdge.IsNull() ) {
 328             Standard_Real aFirst, aLast;
 329             Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
 330
 331             if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
 332               Handle(Geom_BSplineCurve) aBSplineCurve = Handle(Geom_BSplineCurve)::DownCast( aCurve );
 333               if ( !aBSplineCurve.IsNull() ) {
 334                 isFound = hasProjectPointOnCurve( theView, theX, theY, aCurve, aParameter );
 335                 if ( isFound ) {
 336                   aPoint = aBSplineCurve->Value( aParameter );
 337                   Standard_Integer anI1, anI2;
 338                   aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
 339
 340                   aPnt1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
 341                   aPnt2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
 342                 }
 343               }
 344             }
 345           }
 346         }
 347       }
 348     }
 349   }
 350   if ( isFound ) {
 351     thePoint = aPoint;
 352     thePoint1 = aPnt1;
 353     thePoint2 = aPnt2;
 354   }
 355   return isFound;
 356 }
 357
 358 bool CurveCreator_Utils::hasProjectPointOnCurve( Handle(V3d_View) theView,
 359                                                  const int theX, const int theY,
 360                                                  const Handle(Geom_Curve)& theCurve,
 361                                                  Standard_Real& theParameter )
 362 {
 363   bool isFound = false;
 364   if ( theView.IsNull() )
 365     return isFound;
 366
 367   gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, theView );
 368
 369   GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
 370   Standard_Integer aNbPoint = aProj.NbPoints();
 371   if (aNbPoint > 0) {
 372     for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
 373       gp_Pnt aNewPoint = aProj.Point( j );
 374       theParameter = aProj.Parameter( j );
 375
 376       int aX, anY;
 377       CurveCreator_Utils::ConvertPointToClick( aNewPoint, theView, aX, anY );
 378
 379       int aXDelta = abs( aX - theX );
 380       int anYDelta = abs( anY - theY );
 381       isFound = aXDelta < SCENE_PIXEL_TOLERANCE && anYDelta < SCENE_PIXEL_TOLERANCE;
 382     }
 383   }
 384   return isFound;
 385 }