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