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_Line.hxx>
  38 #include <AIS_Trihedron.hxx>
  39 #include <AIS_LocalContext.hxx>
  40
  41 #include <Geom_Point.hxx>
  42 #include <Geom_BSplineCurve.hxx>
  43 #include <Geom_Line.hxx>
  44
  45 #include <TopExp.hxx>
  46 #include <TopExp_Explorer.hxx>
  47 #include <GeomAPI_ProjectPointOnCurve.hxx>
  48 #include <SelectMgr_EntityOwner.hxx>
  49 #include <SelectMgr_Selection.hxx>
  50 #include <Select3D_SensitivePoint.hxx>
  51
  52 #include <BRep_Tool.hxx>
  53 #include <BRep_Builder.hxx>
  54 #include <BRepBuilderAPI_MakeVertex.hxx>
  55 #include <BRepBuilderAPI_MakeEdge.hxx>
  56 #include <BRepBuilderAPI_MakeWire.hxx>
  57
  58 #include <TColgp_HArray1OfPnt.hxx>
  59 #include <GeomAPI_Interpolate.hxx>
  60
  61 #include <ProjLib.hxx>
  62 #include <ElSLib.hxx>
  63
  64 #include <math.h>
  65
  66 #include "CurveCreator_ICurve.hxx"
  67
  68 const double LOCAL_SELECTION_TOLERANCE = 0.0001;
  69 const int    SCENE_PIXEL_PROJECTION_TOLERANCE = 10;
  70 const int    SCENE_PIXEL_POINT_TOLERANCE = 5;
  71
  72 //=======================================================================
  73 // function : ConvertClickToPoint()
  74 // purpose  : Returns the point clicked in 3D view
  75 //=======================================================================
  76 void CurveCreator_Utils::ConvertPointToClick( const gp_Pnt& thePoint,
  77                                               Handle(V3d_View) theView,
  78                                               int& x, int& y )
  79 {
  80   theView->Convert(thePoint.X(), thePoint.Y(), thePoint.Z(), x, y );
  81 }
  82
  83
  84 //=======================================================================
  85 // function : ConvertClickToPoint()
  86 // purpose  : Returns the point clicked in 3D view
  87 //=======================================================================
  88 gp_Pnt CurveCreator_Utils::ConvertClickToPoint( int x, int y, Handle(V3d_View) aView )
  89 {
  90   return GEOMUtils::ConvertClickToPoint( x, y, aView );
  91 }
  92
  93 void CurveCreator_Utils::constructShape( const CurveCreator_ICurve* theCurve,
  94                                          TopoDS_Shape& theShape )
  95 {
  96   BRep_Builder aBuilder;
  97   TopoDS_Compound aComp;
  98   aBuilder.MakeCompound( aComp );
  99   for( int iSection = 0 ; iSection < theCurve->getNbSections() ; iSection++ )
 100   {
 101     int theISection = iSection;
 102
 103     CurveCreator::SectionType aSectType = theCurve->getSectionType( theISection );
 104     int aPointSize = theCurve->getNbPoints( theISection );
 105     bool aSectIsClosed = theCurve->isClosed( theISection );
 106     bool isPolyline = aSectType == CurveCreator::Polyline;
 107     int iPoint = 0;
 108     gp_Pnt aPrevPoint, aPoint;
 109     if ( aPointSize == 1 ) {
 110       CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 111       TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 112       aBuilder.Add( aComp, aVertex );
 113     }
 114     else if ( aPointSize > 1 ) {
 115       Handle(TColgp_HArray1OfPnt) aHCurvePoints = new TColgp_HArray1OfPnt (1, aPointSize);
 116       int aHIndex = 1;
 117
 118       TopoDS_Edge aPointEdge;
 119       TopoDS_Vertex aVertex;
 120       CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 121       aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 122       aBuilder.Add( aComp, aVertex );
 123       aHCurvePoints->SetValue(aHIndex++, aPoint);
 124       aPrevPoint = aPoint;
 125       iPoint++;
 126       for( ; iPoint < aPointSize; iPoint++ ) {
 127         CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 128         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 129         aBuilder.Add( aComp, aVertex );
 130         aHCurvePoints->SetValue(aHIndex++, aPoint);
 131         if ( isPolyline ) {
 132           aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 133           aBuilder.Add( aComp, aPointEdge );
 134         }
 135         aPrevPoint = aPoint;
 136       }
 137       if( aSectIsClosed && ( aPointSize > 2 ) ) {
 138         CurveCreator_UtilsICurve::getPoint( theCurve, theISection, 0, aPoint );
 139         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 140         aBuilder.Add( aComp, aVertex );
 141         if ( isPolyline ) {
 142           aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 143           aBuilder.Add( aComp, aPointEdge );
 144         }
 145       }
 146       if( !isPolyline ) {
 147         // compute BSpline
 148         Handle(Geom_BSplineCurve) aBSplineCurve;
 149         GeomAPI_Interpolate aGBC(aHCurvePoints, aSectIsClosed, gp::Resolution());
 150         aGBC.Perform();
 151         if ( aGBC.IsDone() )
 152           aBSplineCurve = aGBC.Curve();
 153         TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSplineCurve ).Edge();
 154         TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();
 155         aBuilder.Add( aComp, aWire );
 156       }
 157     }
 158   }
 159   theShape = aComp;
 160 }
 161
 162 class ComparePnt
 163 {
 164 public:
 165   ComparePnt( const gp_Pnt& thePoint ) : myPoint( thePoint) {};
 166   ~ComparePnt() {}
 167
 168   bool operator < ( const ComparePnt& theOtherPoint ) const
 169   {
 170     bool isLess = myPoint.X() < theOtherPoint.myPoint.X();
 171     if ( !isLess && myPoint.X() == theOtherPoint.myPoint.X() ) {
 172       isLess = myPoint.Y() < theOtherPoint.myPoint.Y();
 173       if ( !isLess && myPoint.Y() == theOtherPoint.myPoint.Y() )
 174         isLess = myPoint.Z() < theOtherPoint.myPoint.Z();
 175     }
 176     return isLess;
 177   }
 178 private:
 179   gp_Pnt myPoint;
 180 };
 181
 182 void CurveCreator_Utils::getSelectedPoints( Handle(AIS_InteractiveContext) theContext,
 183                                             const CurveCreator_ICurve* theCurve,
 184                                             CurveCreator_ICurve::SectionToPointList& thePoints )
 185 {
 186   thePoints.clear();
 187
 188   std::list<float> aSelectedPoints;
 189   gp_Pnt aPnt;
 190   std::map<ComparePnt, int> aPntMap;
 191
 192   CurveCreator_ICurve::SectionToPointList aPoints;
 193   for ( theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected() ) {
 194     TopoDS_Vertex aVertex;
 195     TopoDS_Shape aShape = theContext->SelectedShape();
 196     if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
 197       aVertex = TopoDS::Vertex( theContext->SelectedShape() );
 198
 199     if ( aVertex.IsNull() )
 200       continue;
 201     aPnt = BRep_Tool::Pnt( aVertex );
 202     if ( aPntMap.find( aPnt ) != aPntMap.end() )
 203       continue;
 204     aPntMap[aPnt] = 0;
 205
 206     CurveCreator_UtilsICurve::findSectionsToPoints( theCurve, aPnt.X(), aPnt.Y(), aPoints );
 207     CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints.begin(),
 208                                                             aLast = aPoints.end();
 209     for ( ; anIt != aLast; anIt++ )
 210       thePoints.push_back( *anIt );
 211   }
 212 }
 213
 214 void CurveCreator_Utils::setSelectedPoints( Handle(AIS_InteractiveContext) theContext,
 215                                             const CurveCreator_ICurve* theCurve,
 216                                             const CurveCreator_ICurve::SectionToPointList& thePoints )
 217 {
 218   if ( !theCurve )
 219     return;
 220
 221   Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
 222   if ( anAIS.IsNull() )
 223     return;
 224   Handle(AIS_Shape) anAISShape = Handle(AIS_Shape)::DownCast( anAIS );
 225   if ( anAISShape.IsNull() )
 226     return;
 227
 228   //ASL: we convert list of point indices to list of points coordinates
 229   int aSize = thePoints.size();
 230   std::vector<gp_Pnt> aPntsToSelect( aSize );
 231
 232   CurveCreator_ICurve::SectionToPointList::const_iterator
 233                      aPIt = thePoints.begin(), aPLast = thePoints.end();
 234   CurveCreator_ICurve::SectionToPoint aSToPoint;
 235   for( int i=0; aPIt != aPLast; aPIt++, i++ )
 236   {
 237     gp_Pnt aPntToSelect;
 238     CurveCreator_UtilsICurve::getPoint( theCurve, aPIt->first, aPIt->second, aPntToSelect );
 239     aPntsToSelect[i] = aPntToSelect;
 240   }
 241
 242   theContext->ClearSelected( Standard_False );
 243   //ASL: we switch off automatic highlight to improve performance of selection
 244   theContext->SetAutomaticHilight( Standard_False );
 245
 246   Handle_SelectMgr_Selection aSelection = anAISShape->Selection( AIS_Shape::SelectionMode( TopAbs_VERTEX ) );
 247   for( aSelection->Init(); aSelection->More(); aSelection->Next() )
 248   {
 249     Handle_SelectBasics_SensitiveEntity aSenEntity = aSelection->Sensitive();
 250     Handle_Select3D_SensitivePoint aSenPnt = Handle_Select3D_SensitivePoint::DownCast( aSenEntity );
 251
 252     gp_Pnt anOwnerPnt = aSenPnt->Point();
 253     Handle_SelectMgr_EntityOwner anOwner = Handle_SelectMgr_EntityOwner::DownCast( aSenPnt->OwnerId() );
 254
 255
 256     CurveCreator_ICurve::SectionToPointList::const_iterator anIt = thePoints.begin(),
 257                                                                    aLast = thePoints.end();
 258     bool isFound = false;
 259     for( int i=0; i<aSize; i++ )
 260     {
 261       bool isIntersect = fabs( aPntsToSelect[i].X() - anOwnerPnt.X() ) < LOCAL_SELECTION_TOLERANCE &&
 262                          fabs( aPntsToSelect[i].Y() - anOwnerPnt.Y() ) < LOCAL_SELECTION_TOLERANCE;
 263       if( isIntersect )
 264       {
 265         theContext->AddOrRemoveSelected( anOwner, Standard_False );
 266         break;
 267       }
 268     }
 269   }
 270
 271   //ASL: we switch on again automatic highlight (otherwise selection will not be shown)
 272   //     and call HilightPicked to draw selected owners
 273   theContext->SetAutomaticHilight( Standard_True );
 274   theContext->LocalContext()->HilightPicked( Standard_True );
 275 }
 276
 277 //=======================================================================
 278 // function : setLocalPointContext
 279 // purpose  : Open/close the viewer local context
 280 //=======================================================================
 281 void CurveCreator_Utils::setLocalPointContext( const CurveCreator_ICurve* theCurve,
 282                                                Handle(AIS_InteractiveContext) theContext,
 283                                                const bool theOpen )
 284 {
 285   if ( !theContext )
 286     return;
 287
 288   if ( theOpen ) {
 289     // Open local context if there is no one
 290     if ( !theContext->HasOpenedContext() ) {
 291       theContext->ClearCurrents( false );
 292       theContext->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
 293     }
 294     // load the curve AIS object to the local context with the point selection
 295     Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
 296     if ( !anAIS.IsNull() )
 297     {
 298       if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
 299       {
 300         theContext->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
 301         theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_VERTEX ) );
 302       }
 303     }
 304   }
 305   else {
 306     if ( theContext->HasOpenedContext() )
 307       theContext->CloseAllContexts();
 308   }
 309 }
 310
 311 bool CurveCreator_Utils::pointOnObject( Handle(V3d_View) theView,
 312                                         Handle(AIS_InteractiveObject) theObject,
 313                                         const int theX, const int theY,
 314                                         gp_Pnt& thePoint,
 315                                         gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
 316 {
 317   bool isFullFound = false;
 318
 319   if ( theObject.IsNull() || theView.IsNull() )
 320     return isFullFound;
 321   Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
 322   if ( aShape.IsNull() )
 323     return isFullFound;
 324   const TopoDS_Compound& aCompound = TopoDS::Compound( aShape->Shape() );
 325   if ( aCompound.IsNull() )
 326     return isFullFound;
 327
 328   gp_Pnt aCurPoint, aCurPoint1, aCurPoint2;
 329   gp_Pnt aFoundPoint, aFoundPnt1, aFoundPnt2;
 330   Standard_Real aParameter;
 331   bool isFound = false;
 332   int aDelta, aMinDelta = 2*SCENE_PIXEL_PROJECTION_TOLERANCE*SCENE_PIXEL_PROJECTION_TOLERANCE;
 333   TopExp_Explorer anExp( aCompound, TopAbs_EDGE );
 334   for ( ; anExp.More(); anExp.Next())
 335   {
 336     const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
 337     if ( anEdge.IsNull() )
 338       continue;
 339     Standard_Real aFirst, aLast;
 340     Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
 341     if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
 342       Handle(Geom_BSplineCurve) aBSplineCurve =
 343                           Handle(Geom_BSplineCurve)::DownCast( aCurve );
 344       if ( !aBSplineCurve.IsNull() ) {
 345         isFound = hasProjectPointOnCurve( theView, theX, theY, aBSplineCurve,
 346                                           aParameter, aDelta );
 347         if ( isFound ) {
 348           aCurPoint = aBSplineCurve->Value( aParameter );
 349           Standard_Integer anI1, anI2;
 350           aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
 351           aCurPoint1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
 352           aCurPoint2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
 353         }
 354       }
 355     }
 356     else { // a curve built on a polyline edge
 357       Handle(Geom_Line) aGLine = Handle(Geom_Line)::DownCast( aCurve );
 358       if ( aGLine.IsNull() )
 359         continue;
 360       isFound = hasProjectPointOnCurve( theView, theX, theY, aGLine, aParameter,
 361                                         aDelta );
 362       if ( isFound ) {
 363         aCurPoint = aGLine->Value( aParameter );
 364         TopoDS_Vertex V1, V2;
 365         TopExp::Vertices( anEdge, V1, V2, Standard_True );
 366         if ( V1.IsNull() || V2.IsNull() )
 367           continue;
 368         aCurPoint1 = BRep_Tool::Pnt(V1);
 369         aCurPoint2 = BRep_Tool::Pnt(V2);
 370
 371         // check that the projected point is on the bounded curve
 372         gp_Vec aVec1( aCurPoint1, aCurPoint );
 373         gp_Vec aVec2( aCurPoint2, aCurPoint );
 374         isFound = fabs( aVec1.Angle( aVec2 ) - M_PI ) < LOCAL_SELECTION_TOLERANCE;
 375       }
 376     }
 377     if ( isFound && aMinDelta >= aDelta ) {
 378       aMinDelta = aDelta;
 379
 380       isFullFound = true;
 381       aFoundPnt1 = aCurPoint1;
 382       aFoundPnt2 = aCurPoint2;
 383       aFoundPoint = aCurPoint;
 384     }
 385   }
 386   if ( isFullFound ) {
 387     int aX, anY, aX1, anY1, aX2, anY2;
 388     int aDelta;
 389     CurveCreator_Utils::ConvertPointToClick( aFoundPoint, theView, aX, anY );
 390     CurveCreator_Utils::ConvertPointToClick( aFoundPnt1, theView, aX1, anY1 );
 391     CurveCreator_Utils::ConvertPointToClick( aFoundPnt2, theView, aX2, anY2 );
 392
 393     isFullFound = !isEqualPixels( aX, anY, aX1, anY1, SCENE_PIXEL_POINT_TOLERANCE, aDelta ) &&
 394                   !isEqualPixels( aX, anY, aX2, anY2, SCENE_PIXEL_POINT_TOLERANCE, aDelta );
 395     if ( isFullFound ) {
 396       thePoint = aFoundPoint;
 397       thePoint1 = aFoundPnt1;
 398       thePoint2 = aFoundPnt2;
 399     }
 400   }
 401   return isFullFound;
 402 }
 403
 404 bool CurveCreator_Utils::hasProjectPointOnCurve( Handle(V3d_View) theView,
 405                                                  const int theX, const int theY,
 406                                                  const Handle(Geom_Curve)& theCurve,
 407                                                  Standard_Real& theParameter,
 408                                                  int& theDelta )
 409 {
 410   bool isFound = false;
 411   if ( theView.IsNull() )
 412     return isFound;
 413
 414   gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, theView );
 415
 416   GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
 417   Standard_Integer aNbPoint = aProj.NbPoints();
 418   if (aNbPoint > 0) {
 419     for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
 420       gp_Pnt aNewPoint = aProj.Point( j );
 421       theParameter = aProj.Parameter( j );
 422
 423       int aX, anY;
 424       CurveCreator_Utils::ConvertPointToClick( aNewPoint, theView, aX, anY );
 425
 426       isFound = isEqualPixels( aX, anY, theX, theY, SCENE_PIXEL_PROJECTION_TOLERANCE, theDelta );
 427     }
 428   }
 429   return isFound;
 430 }
 431
 432 bool CurveCreator_Utils::isEqualPixels( const int theX, const int theY, const int theOtherX,
 433                                         const int theOtherY, const double theTolerance, int& theDelta )
 434 {
 435   int aXDelta = abs( theX - theOtherX );
 436   int anYDelta = abs( theY - theOtherY );
 437
 438   theDelta = aXDelta*aXDelta + anYDelta*anYDelta;
 439
 440   return aXDelta < theTolerance && anYDelta < theTolerance;
 441 }