//! Constructor.
BRepMesh_DelaunayDeflectionControlMeshAlgo()
: myMaxSqDeflection(-1.),
+ mySqMinSize(-1.),
myIsAllDegenerated(Standard_False),
myCircles(NULL)
{
Handle(NCollection_IncAllocator) aTmpAlloc =
new NCollection_IncAllocator(IMeshData::MEMORY_BLOCK_SIZE_HUGE);
+ mySqMinSize = this->getParameters().MinSize * this->getParameters().MinSize;
myCouplesMap = new IMeshData::MapOfOrientedEdges(3 * this->getStructure()->ElementsOfDomain().Extent(), aTmpAlloc);
myControlNodes = new IMeshData::ListOfPnt2d(aTmpAlloc);
myCircles = &theMesher.Circles();
-
+
const Standard_Integer aIterationsNb = 11;
Standard_Boolean isInserted = Standard_True;
Message_ProgressScope aPS(theRange, "Iteration", aIterationsNb);
if (!usePoint (aMidPnt2d, LineDeviation (theNodesInfo[i].Point,
theNodesInfo[j].Point)))
{
- if (!checkLinkEndsForAngularDeviation(theNodesInfo[i],
- theNodesInfo[j],
- aMidPnt2d))
+ if (!rejectSplitLinksForMinSize (theNodesInfo[i],
+ theNodesInfo[j],
+ aMidPnt2d))
{
- myControlNodes->Append(aMidPnt2d);
+ if (!checkLinkEndsForAngularDeviation (theNodesInfo[i],
+ theNodesInfo[j],
+ aMidPnt2d))
+ {
+ myControlNodes->Append(aMidPnt2d);
+ }
}
}
}
}
}
+ //! Checks that two links produced as the result of a split of
+ //! the given link by the middle point fit MinSize requirement.
+ Standard_Boolean rejectSplitLinksForMinSize (const TriangleNodeInfo& theNodeInfo1,
+ const TriangleNodeInfo& theNodeInfo2,
+ const gp_XY& theMidPoint)
+ {
+ const gp_Pnt aPnt = getPoint3d (theMidPoint);
+ return ((theNodeInfo1.Point - aPnt.XYZ()).SquareModulus() < mySqMinSize ||
+ (theNodeInfo2.Point - aPnt.XYZ()).SquareModulus() < mySqMinSize);
+ }
+
//! Checks the given point (located between the given nodes)
//! for specified angular deviation.
Standard_Boolean checkLinkEndsForAngularDeviation(const TriangleNodeInfo& theNodeInfo1,
const TriangleNodeInfo& theNodeInfo2,
- const gp_XY& /*theMidPoint*/)
+ const gp_XY& /*theMidPoint*/)
{
gp_Dir aNorm1, aNorm2;
const Handle(Geom_Surface)& aSurf =
{
Standard_Real anAngle = aNorm1.Angle(aNorm2);
if (anAngle > this->getParameters().AngleInterior)
+ {
return Standard_False;
+ }
}
#if 0
else if (GeomLib::NormEstim(aSurf, theMidPoint, Precision::Confusion(), aNorm1) != 0)
return Standard_True;
}
+ //! Returns 3d point corresponding to the given one in 2d space.
+ gp_Pnt getPoint3d (const gp_XY& thePnt2d)
+ {
+ gp_Pnt aPnt;
+ this->getDFace()->GetSurface()->D0(thePnt2d.X(), thePnt2d.Y(), aPnt);
+ return aPnt;
+ }
+
//! Computes deflection of the given point and caches it for
//! insertion in case if it overflows deflection.
//! @return True if point has been cached for insertion.
const gp_XY& thePnt2d,
const DeflectionFunctor& theDeflectionFunctor)
{
- gp_Pnt aPnt;
- this->getDFace()->GetSurface()->D0(thePnt2d.X(), thePnt2d.Y(), aPnt);
+ const gp_Pnt aPnt = getPoint3d (thePnt2d);
if (!checkDeflectionOfPointAndUpdateCache(thePnt2d, aPnt, theDeflectionFunctor.SquareDeviation(aPnt)))
{
myControlNodes->Append(thePnt2d);
return rejectByMinSize(thePnt2d, thePnt3d);
}
- //! Checks the given node for
+ //! Checks distance between the given node and nodes of triangles
+ //! shot by it for MinSize criteria.
+ //! This check is expected to roughly estimate and prevent
+ //! generation of triangles with sides smaller than MinSize.
Standard_Boolean rejectByMinSize(
const gp_XY& thePnt2d,
const gp_Pnt& thePnt3d)
{
- const Standard_Real aSqMinSize =
- this->getParameters().MinSize * this->getParameters().MinSize;
-
IMeshData::MapOfInteger aUsedNodes;
IMeshData::ListOfInteger& aCirclesList =
const_cast<BRepMesh_CircleTool&>(*myCircles).Select(
const BRepMesh_Vertex& aVertex = this->getStructure()->GetNode(aNodes[i]);
const gp_Pnt& aPoint = this->getNodesMap()->Value(aVertex.Location3d());
- if (thePnt3d.SquareDistance(aPoint) < aSqMinSize)
+ if (thePnt3d.SquareDistance(aPoint) < mySqMinSize)
{
return Standard_True;
}
private:
Standard_Real myMaxSqDeflection;
+ Standard_Real mySqMinSize;
Standard_Boolean myIsAllDegenerated;
Handle(IMeshData::MapOfOrientedEdges) myCouplesMap;
Handle(IMeshData::ListOfPnt2d) myControlNodes;
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