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     if ( aPointSize == 0 )
 106       continue;
 107
 108     bool aSectIsClosed = theCurve->isClosed( theISection );
 109     bool isPolyline = aSectType == CurveCreator::Polyline;
 110
 111     int iPoint = 0;
 112     gp_Pnt aPrevPoint, aPoint;
 113     // filters the curve points to skip equal points
 114     std::vector<gp_Pnt> aPoints;
 115     CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 116     aPoints.push_back( aPoint );
 117     aPrevPoint = aPoint;
 118     iPoint++;
 119     for( ; iPoint < aPointSize; iPoint++ ) {
 120       CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
 121       if ( !isEqualPoints( aPrevPoint, aPoint ) )
 122         aPoints.push_back( aPoint );
 123       aPrevPoint = aPoint;
 124     }
 125     int aNbPoints = aPoints.size();
 126
 127     if ( aNbPoints == 1 ) {
 128       aPoint = aPoints.front();
 129       TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 130       aBuilder.Add( aComp, aVertex );
 131     }
 132     else if ( aNbPoints > 1 ) {
 133       Handle(TColgp_HArray1OfPnt) aHCurvePoints = new TColgp_HArray1OfPnt (1, aNbPoints);
 134
 135       TopoDS_Edge aPointEdge;
 136       TopoDS_Vertex aVertex;
 137
 138       std::vector<gp_Pnt>::const_iterator aPointIt = aPoints.begin(), aPointLast = aPoints.end();
 139       aPoint = *aPointIt;
 140
 141       int aHIndex = 1;
 142       aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 143       aBuilder.Add( aComp, aVertex );
 144       aHCurvePoints->SetValue(aHIndex++, aPoint);
 145       aPrevPoint = aPoint;
 146       aPointIt++;
 147       for( ; aPointIt != aPointLast; aPointIt++ ) {
 148         aPoint = *aPointIt;
 149         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 150         aBuilder.Add( aComp, aVertex );
 151         aHCurvePoints->SetValue(aHIndex++, aPoint);
 152         if ( isPolyline ) {
 153           TopoDS_Edge aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 154           aBuilder.Add( aComp, aPointEdge );
 155         }
 156         aPrevPoint = aPoint;
 157       }
 158       if( aSectIsClosed && ( aNbPoints > 2 ) ) {
 159         aPoint = aPoints.front();
 160         aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
 161         aBuilder.Add( aComp, aVertex );
 162         if ( isPolyline ) {
 163           aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
 164           aBuilder.Add( aComp, aPointEdge );
 165         }
 166       }
 167       if( !isPolyline ) {
 168         // compute BSpline
 169         Handle(Geom_BSplineCurve) aBSplineCurve;
 170         GeomAPI_Interpolate aGBC(aHCurvePoints, aSectIsClosed, gp::Resolution());
 171         aGBC.Perform();
 172         if ( aGBC.IsDone() )
 173           aBSplineCurve = aGBC.Curve();
 174         TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSplineCurve ).Edge();
 175         TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();
 176         aBuilder.Add( aComp, aWire );
 177       }
 178     }
 179   }
 180   theShape = aComp;
 181 }
 182
 183 class CompareSectionToPoint
 184 {
 185 public:
 186   CompareSectionToPoint( const int theISection = -1, const int theIPoint = -1 )
 187     : mySectionId( theISection ), myPointId( theIPoint ) {};
 188   ~CompareSectionToPoint() {}
 189
 190   bool operator < ( const CompareSectionToPoint& theOther ) const
 191   {
 192     bool isLess = mySectionId < theOther.mySectionId;
 193     if ( !isLess && mySectionId == theOther.mySectionId )
 194       isLess = myPointId < theOther.myPointId;
 195     return isLess;
 196   }
 197
 198 private:
 199   int mySectionId;
 200   int myPointId;
 201 };
 202
 203
 204 void CurveCreator_Utils::getSelectedPoints( Handle(AIS_InteractiveContext) theContext,
 205                                             const CurveCreator_ICurve* theCurve,
 206                                             CurveCreator_ICurve::SectionToPointList& thePoints )
 207 {
 208   thePoints.clear();
 209
 210   std::list<float> aSelectedPoints;
 211   gp_Pnt aPnt;
 212   std::map<CompareSectionToPoint, int> aPointsMap;
 213
 214   CurveCreator_ICurve::SectionToPointList aPoints;
 215   for ( theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected() ) {
 216     TopoDS_Vertex aVertex;
 217     TopoDS_Shape aShape = theContext->SelectedShape();
 218     if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
 219       aVertex = TopoDS::Vertex( theContext->SelectedShape() );
 220
 221     if ( aVertex.IsNull() )
 222       continue;
 223     aPnt = BRep_Tool::Pnt( aVertex );
 224
 225     CurveCreator_UtilsICurve::findSectionsToPoints( theCurve, aPnt.X(), aPnt.Y(), aPoints );
 226     CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints.begin(),
 227                                                             aLast = aPoints.end();
 228     CompareSectionToPoint aPoint;
 229     for ( ; anIt != aLast; anIt++ ) {
 230       aPoint = CompareSectionToPoint( (*anIt).first, (*anIt).second );
 231       if ( aPointsMap.find( aPoint ) != aPointsMap.end() )
 232         continue;
 233       aPointsMap[aPoint] = 0;
 234
 235       thePoints.push_back( *anIt );
 236     }
 237   }
 238 }
 239
 240 void CurveCreator_Utils::setSelectedPoints( Handle(AIS_InteractiveContext) theContext,
 241                                             const CurveCreator_ICurve* theCurve,
 242                                             const CurveCreator_ICurve::SectionToPointList& thePoints )
 243 {
 244   if ( !theCurve )
 245     return;
 246
 247   Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
 248   if ( anAIS.IsNull() )
 249     return;
 250   Handle(AIS_Shape) anAISShape = Handle(AIS_Shape)::DownCast( anAIS );
 251   if ( anAISShape.IsNull() )
 252     return;
 253
 254   //ASL: we convert list of point indices to list of points coordinates
 255   int aSize = thePoints.size();
 256   std::vector<gp_Pnt> aPntsToSelect( aSize );
 257
 258   CurveCreator_ICurve::SectionToPointList::const_iterator
 259                      aPIt = thePoints.begin(), aPLast = thePoints.end();
 260   CurveCreator_ICurve::SectionToPoint aSToPoint;
 261   for( int i=0; aPIt != aPLast; aPIt++, i++ )
 262   {
 263     gp_Pnt aPntToSelect;
 264     CurveCreator_UtilsICurve::getPoint( theCurve, aPIt->first, aPIt->second, aPntToSelect );
 265     aPntsToSelect[i] = aPntToSelect;
 266   }
 267
 268   theContext->ClearSelected( Standard_False );
 269   //ASL: we switch off automatic highlight to improve performance of selection
 270   theContext->SetAutomaticHilight( Standard_False );
 271
 272   Handle_SelectMgr_Selection aSelection = anAISShape->Selection( AIS_Shape::SelectionMode( TopAbs_VERTEX ) );
 273   for( aSelection->Init(); aSelection->More(); aSelection->Next() )
 274   {
 275     Handle_SelectBasics_SensitiveEntity aSenEntity = aSelection->Sensitive();
 276     Handle_Select3D_SensitivePoint aSenPnt = Handle_Select3D_SensitivePoint::DownCast( aSenEntity );
 277
 278     gp_Pnt anOwnerPnt = aSenPnt->Point();
 279     Handle_SelectMgr_EntityOwner anOwner = Handle_SelectMgr_EntityOwner::DownCast( aSenPnt->OwnerId() );
 280
 281
 282     CurveCreator_ICurve::SectionToPointList::const_iterator anIt = thePoints.begin(),
 283                                                                    aLast = thePoints.end();
 284     bool isFound = false;
 285     for( int i=0; i<aSize; i++ )
 286     {
 287       bool isIntersect = fabs( aPntsToSelect[i].X() - anOwnerPnt.X() ) < LOCAL_SELECTION_TOLERANCE &&
 288                          fabs( aPntsToSelect[i].Y() - anOwnerPnt.Y() ) < LOCAL_SELECTION_TOLERANCE;
 289       if( isIntersect )
 290       {
 291         theContext->AddOrRemoveSelected( anOwner, Standard_False );
 292         break;
 293       }
 294     }
 295   }
 296
 297   //ASL: we switch on again automatic highlight (otherwise selection will not be shown)
 298   //     and call HilightPicked to draw selected owners
 299   theContext->SetAutomaticHilight( Standard_True );
 300   theContext->LocalContext()->HilightPicked( Standard_True );
 301 }
 302
 303 //=======================================================================
 304 // function : setLocalPointContext
 305 // purpose  : Open/close the viewer local context
 306 //=======================================================================
 307 void CurveCreator_Utils::setLocalPointContext( const CurveCreator_ICurve* theCurve,
 308                                                Handle(AIS_InteractiveContext) theContext,
 309                                                const bool theOpen )
 310 {
 311   if ( !theContext )
 312     return;
 313
 314   if ( theOpen ) {
 315     // Open local context if there is no one
 316     if ( !theContext->HasOpenedContext() ) {
 317       theContext->ClearCurrents( false );
 318       theContext->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
 319     }
 320     // load the curve AIS object to the local context with the point selection
 321     Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
 322     if ( !anAIS.IsNull() )
 323     {
 324       if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
 325       {
 326         theContext->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
 327         theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_VERTEX ) );
 328       }
 329     }
 330   }
 331   else {
 332     if ( theContext->HasOpenedContext() )
 333       theContext->CloseAllContexts();
 334   }
 335 }
 336
 337 bool CurveCreator_Utils::pointOnObject( Handle(V3d_View) theView,
 338                                         Handle(AIS_InteractiveObject) theObject,
 339                                         const int theX, const int theY,
 340                                         gp_Pnt& thePoint,
 341                                         gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
 342 {
 343   bool isFullFound = false;
 344
 345   if ( theObject.IsNull() || theView.IsNull() )
 346     return isFullFound;
 347   Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
 348   if ( aShape.IsNull() )
 349     return isFullFound;
 350   const TopoDS_Compound& aCompound = TopoDS::Compound( aShape->Shape() );
 351   if ( aCompound.IsNull() )
 352     return isFullFound;
 353
 354   gp_Pnt aCurPoint, aCurPoint1, aCurPoint2;
 355   gp_Pnt aFoundPoint, aFoundPnt1, aFoundPnt2;
 356   Standard_Real aParameter;
 357   bool isFound = false;
 358   int aDelta, aMinDelta = 2*SCENE_PIXEL_PROJECTION_TOLERANCE*SCENE_PIXEL_PROJECTION_TOLERANCE;
 359   TopExp_Explorer anExp( aCompound, TopAbs_EDGE );
 360   for ( ; anExp.More(); anExp.Next())
 361   {
 362     const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
 363     if ( anEdge.IsNull() )
 364       continue;
 365     Standard_Real aFirst, aLast;
 366     Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
 367     if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
 368       Handle(Geom_BSplineCurve) aBSplineCurve =
 369                           Handle(Geom_BSplineCurve)::DownCast( aCurve );
 370       if ( !aBSplineCurve.IsNull() ) {
 371         isFound = hasProjectPointOnCurve( theView, theX, theY, aBSplineCurve,
 372                                           aParameter, aDelta );
 373         if ( isFound ) {
 374           aCurPoint = aBSplineCurve->Value( aParameter );
 375           Standard_Integer anI1, anI2;
 376           aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
 377           aCurPoint1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
 378           aCurPoint2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
 379         }
 380       }
 381     }
 382     else { // a curve built on a polyline edge
 383       Handle(Geom_Line) aGLine = Handle(Geom_Line)::DownCast( aCurve );
 384       if ( aGLine.IsNull() )
 385         continue;
 386       isFound = hasProjectPointOnCurve( theView, theX, theY, aGLine, aParameter,
 387                                         aDelta );
 388       if ( isFound ) {
 389         aCurPoint = aGLine->Value( aParameter );
 390         TopoDS_Vertex V1, V2;
 391         TopExp::Vertices( anEdge, V1, V2, Standard_True );
 392         if ( V1.IsNull() || V2.IsNull() )
 393           continue;
 394         aCurPoint1 = BRep_Tool::Pnt(V1);
 395         aCurPoint2 = BRep_Tool::Pnt(V2);
 396
 397         // check that the projected point is on the bounded curve
 398         gp_Vec aVec1( aCurPoint1, aCurPoint );
 399         gp_Vec aVec2( aCurPoint2, aCurPoint );
 400         isFound = fabs( aVec1.Angle( aVec2 ) - M_PI ) < LOCAL_SELECTION_TOLERANCE;
 401       }
 402     }
 403     if ( isFound && aMinDelta >= aDelta ) {
 404       aMinDelta = aDelta;
 405
 406       isFullFound = true;
 407       aFoundPnt1 = aCurPoint1;
 408       aFoundPnt2 = aCurPoint2;
 409       aFoundPoint = aCurPoint;
 410     }
 411   }
 412   if ( isFullFound ) {
 413     int aX, anY, aX1, anY1, aX2, anY2;
 414     int aDelta;
 415     CurveCreator_Utils::ConvertPointToClick( aFoundPoint, theView, aX, anY );
 416     CurveCreator_Utils::ConvertPointToClick( aFoundPnt1, theView, aX1, anY1 );
 417     CurveCreator_Utils::ConvertPointToClick( aFoundPnt2, theView, aX2, anY2 );
 418
 419     isFullFound = !isEqualPixels( aX, anY, aX1, anY1, SCENE_PIXEL_POINT_TOLERANCE, aDelta ) &&
 420                   !isEqualPixels( aX, anY, aX2, anY2, SCENE_PIXEL_POINT_TOLERANCE, aDelta );
 421     if ( isFullFound ) {
 422       thePoint = aFoundPoint;
 423       thePoint1 = aFoundPnt1;
 424       thePoint2 = aFoundPnt2;
 425     }
 426   }
 427   return isFullFound;
 428 }
 429
 430 bool CurveCreator_Utils::hasProjectPointOnCurve( Handle(V3d_View) theView,
 431                                                  const int theX, const int theY,
 432                                                  const Handle(Geom_Curve)& theCurve,
 433                                                  Standard_Real& theParameter,
 434                                                  int& theDelta )
 435 {
 436   bool isFound = false;
 437   if ( theView.IsNull() )
 438     return isFound;
 439
 440   gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, theView );
 441
 442   GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
 443   Standard_Integer aNbPoint = aProj.NbPoints();
 444   if (aNbPoint > 0) {
 445     for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
 446       gp_Pnt aNewPoint = aProj.Point( j );
 447       theParameter = aProj.Parameter( j );
 448
 449       int aX, anY;
 450       CurveCreator_Utils::ConvertPointToClick( aNewPoint, theView, aX, anY );
 451
 452       isFound = isEqualPixels( aX, anY, theX, theY, SCENE_PIXEL_PROJECTION_TOLERANCE, theDelta );
 453     }
 454   }
 455   return isFound;
 456 }
 457
 458 bool CurveCreator_Utils::isEqualPixels( const int theX, const int theY, const int theOtherX,
 459                                         const int theOtherY, const double theTolerance, int& theDelta )
 460 {
 461   int aXDelta = abs( theX - theOtherX );
 462   int anYDelta = abs( theY - theOtherY );
 463
 464   theDelta = aXDelta*aXDelta + anYDelta*anYDelta;
 465
 466   return aXDelta < theTolerance && anYDelta < theTolerance;
 467 }
 468
 469 bool CurveCreator_Utils::isEqualPoints( const gp_Pnt& thePoint, const gp_Pnt& theOtherPoint )
 470 {
 471   return theOtherPoint.IsEqual( thePoint, LOCAL_SELECTION_TOLERANCE );
 472 }