+ // the 3D point, that is a projection of the pixels to the XYZ view plane
+ //return GEOMUtils::ConvertClickToPoint( x, y, aView );
+
+ // we need the projection to the XOY plane
+ // 1. find a point in the plane of the eye and the normal to the plane
+ Standard_Real X, Y, Z;
+ Quantity_Parameter Vx, Vy, Vz;
+ aView->ConvertWithProj( x, y, X, Y, Z, Vx, Vy, Vz );
+
+ // 2. build a ray from the point by the normal to the XOY plane and intersect it
+ // The ray equation is the following : p(x,y,z) = p0(x,y,z) + t*V(x,y,z)
+ // X,Y,Z - defines p0(x,y,z), Vx,Vy,Vz - defines V(x,y,z)
+ // p(x,y,z) - is a searched point, t - should to be calculated by the condition of XOY plane
+ // The system of equations is the following:
+ // p(x) = p0(x)+t*V(x)
+ // p(y) = p0(y)+t*V(y)
+ // p(z) = p0(z)+t*V(z)
+ // p(z) = 0
+
+ Standard_Real aXp, aYp, aZp;
+ //It is not possible to use Precision::Confusion(), because it is e-0.8, but V is sometimes e-6
+ Standard_Real aPrec = LOCAL_SELECTION_TOLERANCE;
+ if ( fabs( Vz ) > aPrec ) {
+ Standard_Real aT = -Z/Vz;
+ aXp = X + aT*Vx;
+ aYp = Y + aT*Vy;
+ aZp = Z + aT*Vz;
+ }
+ else { // Vz = 0 - the eyed plane is orthogonal to Z plane - XOZ, or YOZ
+ aXp = aYp = aZp = 0;
+ if ( fabs( Vy ) < aPrec ) // Vy = 0 - the YOZ plane
+ aYp = Y;
+ else if ( fabs( Vx ) < aPrec ) // Vx = 0 - the XOZ plane
+ aXp = X;
+ }
+ /*std::cout << "ConvertClickToPoint: " << std::endl
+ << "XYZ1 = (" << X << ", " << Y << ", " << Z << "); " << std::endl
+ << "Vxyz = (" << Vx << ", " << Vy << ", " << Vz << "); " << std::endl
+ << "Resp = (" << aXp << ", " << aYp << ", " << aZp << "); " << std::endl;*/
+
+ gp_Pnt ResultPoint( aXp, aYp, aZp );
+ return ResultPoint;
+}
+
+void CurveCreator_Utils::constructShape( const CurveCreator_ICurve* theCurve,
+ TopoDS_Shape& theShape )
+{
+ BRep_Builder aBuilder;
+ TopoDS_Compound aComp;
+ aBuilder.MakeCompound( aComp );
+ for( int iSection = 0 ; iSection < theCurve->getNbSections() ; iSection++ )
+ {
+ int theISection = iSection;
+
+ CurveCreator::SectionType aSectType = theCurve->getSectionType( theISection );
+ int aPointSize = theCurve->getNbPoints( theISection );
+ if ( aPointSize == 0 )
+ continue;
+
+ bool aSectIsClosed = theCurve->isClosed( theISection );
+ bool isPolyline = aSectType == CurveCreator::Polyline;
+
+ int iPoint = 0;
+ gp_Pnt aPrevPoint, aPoint;
+ // filters the curve points to skip equal points
+ std::vector<gp_Pnt> aPoints;
+ CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
+ aPoints.push_back( aPoint );
+ aPrevPoint = aPoint;
+ iPoint++;
+ for( ; iPoint < aPointSize; iPoint++ ) {
+ CurveCreator_UtilsICurve::getPoint( theCurve, theISection, iPoint, aPoint );
+ if ( !isEqualPoints( aPrevPoint, aPoint ) )
+ aPoints.push_back( aPoint );
+ aPrevPoint = aPoint;
+ }
+ int aNbPoints = aPoints.size();
+
+ if ( aNbPoints == 1 ) {
+ aPoint = aPoints.front();
+ TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
+ aBuilder.Add( aComp, aVertex );
+ }
+ else if ( aNbPoints > 1 ) {
+ Handle(TColgp_HArray1OfPnt) aHCurvePoints = new TColgp_HArray1OfPnt(1, aNbPoints);
+ TColgp_Array1OfVec aTangents(1, aNbPoints);
+ Handle(TColStd_HArray1OfBoolean) aTangentFlags = new TColStd_HArray1OfBoolean(1, aNbPoints);
+ gp_Vec aNullVec(0, 0, 0);
+
+ TopoDS_Edge aPointEdge;
+ TopoDS_Vertex aVertex;
+
+ std::vector<gp_Pnt>::const_iterator aPointIt = aPoints.begin(), aPointLast = aPoints.end();
+ aPoint = *aPointIt;
+
+ int aHIndex = 1;
+ aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
+ aBuilder.Add( aComp, aVertex );
+ if ( !isPolyline ) {
+ aHCurvePoints->SetValue( aHIndex, aPoint );
+ aTangents.SetValue( aHIndex, aNullVec );
+ aTangentFlags->SetValue( aHIndex, Standard_False );
+ aHIndex++;
+ }
+
+ aPrevPoint = aPoint;
+ aPointIt++;
+ for( ; aPointIt != aPointLast; aPointIt++ ) {
+ aPoint = *aPointIt;
+ aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
+ aBuilder.Add( aComp, aVertex );
+ if ( isPolyline ) {
+ TopoDS_Edge aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
+ aBuilder.Add( aComp, aPointEdge );
+ }
+ else {
+ aHCurvePoints->SetValue( aHIndex, aPoint );
+ aTangents.SetValue( aHIndex, aNullVec );
+ aTangentFlags->SetValue( aHIndex, Standard_False );
+ aHIndex++;
+ }
+ aPrevPoint = aPoint;
+ }
+ if( aSectIsClosed && ( aNbPoints > 2 ) ) {
+ aPoint = aPoints.front();
+ aVertex = BRepBuilderAPI_MakeVertex( aPoint ).Vertex();
+ aBuilder.Add( aComp, aVertex );
+ if ( isPolyline ) {
+ aPointEdge = BRepBuilderAPI_MakeEdge( aPrevPoint, aPoint ).Edge();
+ aBuilder.Add( aComp, aPointEdge );
+ }
+ }
+ if( !isPolyline ) {
+ // compute BSpline
+ Handle(Geom_BSplineCurve) aBSplineCurve;
+ GeomAPI_Interpolate aGBC(aHCurvePoints, aSectIsClosed, gp::Resolution());
+ // correct the spline degree to be as 3 for non-periodic spline if number of points
+ // less than 3. It is need to have a knot in each spline point. This knots are used
+ // to found a neighbour points when a new point is inserted between two existing.
+ if (!aSectIsClosed ) {
+ if (aHCurvePoints->Length() == 3)
+ aGBC.Load(aTangents, aTangentFlags);
+ }
+
+ aGBC.Perform();
+ if ( aGBC.IsDone() )
+ aBSplineCurve = aGBC.Curve();
+ TopoDS_Edge anEdge = BRepBuilderAPI_MakeEdge( aBSplineCurve ).Edge();
+ TopoDS_Wire aWire = BRepBuilderAPI_MakeWire( anEdge ).Wire();
+ aBuilder.Add( aComp, aWire );
+ }
+ }
+ }
+ theShape = aComp;
+}
+
+class CompareSectionToPoint
+{
+public:
+ CompareSectionToPoint( const int theISection = -1, const int theIPoint = -1 )
+ : mySectionId( theISection ), myPointId( theIPoint ) {};
+ ~CompareSectionToPoint() {}
+
+ bool operator < ( const CompareSectionToPoint& theOther ) const
+ {
+ bool isLess = mySectionId < theOther.mySectionId;
+ if ( !isLess && mySectionId == theOther.mySectionId )
+ isLess = myPointId < theOther.myPointId;
+ return isLess;
+ }
+
+private:
+ int mySectionId;
+ int myPointId;
+};
+
+
+void CurveCreator_Utils::getSelectedPoints( Handle(AIS_InteractiveContext) theContext,
+ const CurveCreator_ICurve* theCurve,
+ CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+ thePoints.clear();
+
+ std::list<float> aSelectedPoints;
+ gp_Pnt aPnt;
+ std::map<CompareSectionToPoint, int> aPointsMap;
+
+ CurveCreator_ICurve::SectionToPointList aPoints;
+ for ( theContext->InitSelected(); theContext->MoreSelected(); theContext->NextSelected() ) {
+ TopoDS_Vertex aVertex;
+ TopoDS_Shape aShape = theContext->SelectedShape();
+ if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
+ aVertex = TopoDS::Vertex( theContext->SelectedShape() );
+
+ if ( aVertex.IsNull() )
+ continue;
+ aPnt = BRep_Tool::Pnt( aVertex );
+
+ CurveCreator_UtilsICurve::findSectionsToPoints( theCurve, aPnt.X(), aPnt.Y(), aPoints );
+ CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints.begin(),
+ aLast = aPoints.end();
+ CompareSectionToPoint aPoint;
+ for ( ; anIt != aLast; anIt++ ) {
+ aPoint = CompareSectionToPoint( (*anIt).first, (*anIt).second );
+ if ( aPointsMap.find( aPoint ) != aPointsMap.end() )
+ continue;
+ aPointsMap[aPoint] = 0;
+
+ thePoints.push_back( *anIt );
+ }
+ }
+}
+
+void CurveCreator_Utils::setSelectedPoints( Handle(AIS_InteractiveContext) theContext,
+ const CurveCreator_ICurve* theCurve,
+ const CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+ if ( !theCurve )
+ return;
+
+ Handle(AIS_InteractiveObject) anAIS = theCurve->getAISObject();
+ if ( anAIS.IsNull() )
+ return;
+ Handle(AIS_Shape) anAISShape = Handle(AIS_Shape)::DownCast( anAIS );
+ if ( anAISShape.IsNull() )
+ return;
+
+ //ASL: we convert list of point indices to list of points coordinates
+ int aSize = thePoints.size();
+ std::vector<gp_Pnt> aPntsToSelect( aSize );
+
+ CurveCreator_ICurve::SectionToPointList::const_iterator
+ aPIt = thePoints.begin(), aPLast = thePoints.end();
+ CurveCreator_ICurve::SectionToPoint aSToPoint;
+ for( int i=0; aPIt != aPLast; aPIt++, i++ )
+ {
+ gp_Pnt aPntToSelect;
+ CurveCreator_UtilsICurve::getPoint( theCurve, aPIt->first, aPIt->second, aPntToSelect );
+ aPntsToSelect[i] = aPntToSelect;
+ }
+
+ theContext->ClearSelected( Standard_False );
+ //ASL: we switch off automatic highlight to improve performance of selection
+ theContext->SetAutomaticHilight( Standard_False );
+
+ Handle_SelectMgr_Selection aSelection = anAISShape->Selection( AIS_Shape::SelectionMode( TopAbs_VERTEX ) );
+ for( aSelection->Init(); aSelection->More(); aSelection->Next() )
+ {
+ Handle_SelectBasics_SensitiveEntity aSenEntity = aSelection->Sensitive();
+ Handle_Select3D_SensitivePoint aSenPnt = Handle_Select3D_SensitivePoint::DownCast( aSenEntity );
+
+ gp_Pnt anOwnerPnt = aSenPnt->Point();
+ Handle_SelectMgr_EntityOwner anOwner = Handle_SelectMgr_EntityOwner::DownCast( aSenPnt->OwnerId() );
+
+
+ CurveCreator_ICurve::SectionToPointList::const_iterator anIt = thePoints.begin(),
+ aLast = thePoints.end();
+ bool isFound = false;
+ for( int i=0; i<aSize; i++ )
+ {
+ bool isIntersect = fabs( aPntsToSelect[i].X() - anOwnerPnt.X() ) < LOCAL_SELECTION_TOLERANCE &&
+ fabs( aPntsToSelect[i].Y() - anOwnerPnt.Y() ) < LOCAL_SELECTION_TOLERANCE;
+ if( isIntersect )
+ {
+ theContext->AddOrRemoveSelected( anOwner, Standard_False );
+ break;
+ }
+ }
+ }
+
+ //ASL: we switch on again automatic highlight (otherwise selection will not be shown)
+ // and call HilightPicked to draw selected owners
+ theContext->SetAutomaticHilight( Standard_True );
+ theContext->LocalContext()->HilightPicked( Standard_True );