#include "SMESH_subMesh.hxx"
#include "SMESH_subMeshEventListener.hxx"
-#include "utilities.h"
-
#include <BRepAdaptor_Curve2d.hxx>
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
struct _Simplex
{
const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
- _Simplex(const SMDS_MeshNode* nPrev=0, const SMDS_MeshNode* nNext=0)
- : _nPrev(nPrev), _nNext(nNext) {}
+ const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
+ _Simplex(const SMDS_MeshNode* nPrev=0,
+ const SMDS_MeshNode* nNext=0,
+ const SMDS_MeshNode* nOpp=0)
+ : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ* pntTgt) const
{
const double M[3][3] =
//vector<const SMDS_MeshNode*> _nodesAround;
vector<_Simplex> _simplices; // for quality check
+ enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR };
+
bool Smooth(int& badNb,
Handle(Geom_Surface)& surface,
SMESH_MesherHelper& helper,
const double refSign,
- bool isCentroidal,
+ SmoothType how,
bool set3D);
+
+ gp_XY computeAngularPos(vector<gp_XY>& uv,
+ const gp_XY& uvToFix,
+ const double refSign );
};
//--------------------------------------------------------------------------------
/*!
int srcInd = f->GetNodeIndex( node );
const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
+ const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
std::swap( nPrev, nNext );
- simplices.push_back( _Simplex( nPrev, nNext ));
+ simplices.push_back( _Simplex( nPrev, nNext, nOpp ));
}
if ( toSort )
sm->getDependsOnIterator(/*includeSelf=*/false, /*complexShapeFirst=*/false);
while ( subIt->more() )
{
- SMESH_subMesh* sub = subIt->next();
+ SMESH_subMesh* sub = subIt->next();
SMESHDS_SubMesh* subDS = sub->GetSubMeshDS();
if ( subDS->NbNodes() == 0 || !n2eMap.count( subDS->GetNodes()->next() ))
continue;
vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
{
dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
+ const bool sortSimplices = isConcaveFace;
for ( unsigned i = 0; i < smoothNodes.size(); ++i )
{
const SMDS_MeshNode* n = smoothNodes[i];
nodesToSmooth[ i ]._node = n;
// src nodes must be replaced by tgt nodes to have tgt nodes in _simplices
- getSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, NULL, isConcaveFace );
+ getSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, NULL, sortSimplices );
// fix up incorrect uv of nodes on the FACE
helper.GetNodeUV( F, n, 0, &isOkUV);
dumpMove( n );
bool shrinked = true;
int badNb, shriStep=0, smooStep=0;
+ _SmoothNode::SmoothType smoothType
+ = isConcaveFace ? _SmoothNode::CENTROIDAL : _SmoothNode::LAPLACIAN;
while ( shrinked )
{
// Move boundary nodes (actually just set new UV)
dumpFunctionEnd();
// Move nodes on EDGE's
+ // (XYZ is set as soon as a needed length reached in SetNewLength2d())
set< _Shrinker1D* >::iterator shr = eShri1D.begin();
for ( ; shr != eShri1D.end(); ++shr )
(*shr)->Compute( /*set3D=*/false, helper );
for ( unsigned i = 0; i < nodesToSmooth.size(); ++i )
{
moved |= nodesToSmooth[i].Smooth( badNb,surface,helper,refSign,
- /*isCentroidal=*/isConcaveFace,
- /*set3D=*/isConcaveFace);
+ smoothType, /*set3D=*/isConcaveFace);
}
if ( badNb < oldBadNb )
nbNoImpSteps = 0;
if ( badNb > 0 )
return error(SMESH_Comment("Can't shrink 2D mesh on face ") << f2sd->first );
}
+
// No wrongly shaped faces remain; final smooth. Set node XYZ.
- // First, find out a needed quality of smoothing (high for quadrangles only)
- bool highQuality;
+ bool isStructuredFixed = false;
+ if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
+ isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
+ if ( !isStructuredFixed )
{
- const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
- if ( hasTria != hasQuad ) {
- highQuality = hasQuad;
- }
- else {
- set<int> nbNodesSet;
- SMDS_ElemIteratorPtr fIt = smDS->GetElements();
- while ( fIt->more() && nbNodesSet.size() < 2 )
- nbNodesSet.insert( fIt->next()->NbCornerNodes() );
- highQuality = ( *nbNodesSet.begin() == 4 );
+ if ( isConcaveFace )
+ fixBadFaces( F, helper ); // fix narrow faces by swapping diagonals
+ for ( int st = /*highQuality ? 10 :*/ 3; st; --st )
+ {
+ dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
+ for ( unsigned i = 0; i < nodesToSmooth.size(); ++i )
+ {
+ nodesToSmooth[i].Smooth( badNb,surface,helper,refSign,
+ smoothType,/*set3D=*/st==1 );
+ }
+ dumpFunctionEnd();
}
}
- if ( !highQuality && isConcaveFace )
- fixBadFaces( F, helper ); // fix narrow faces by swaping diagonals
- for ( int st = highQuality ? 10 : 3; st; --st )
- {
- dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
- for ( unsigned i = 0; i < nodesToSmooth.size(); ++i )
- nodesToSmooth[i].Smooth( badNb,surface,helper,refSign,
- /*isCentroidal=*/isConcaveFace,/*set3D=*/st==1 );
- dumpFunctionEnd();
- }
// Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
double uvLen = uvDir.Magnitude();
uvDir /= uvLen;
edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0);
+ edge._len = uvLen;
// IMPORTANT to have src nodes NOT yet REPLACED by tgt nodes in shrinked faces
vector<const SMDS_MeshElement*> faces;
}
multimap< double, const SMDS_MeshNode* >::iterator p2n = proj2node.begin(), p2nEnd;
- const double minProj = p2n->first;
+ const double minProj = p2n->first;
const double projThreshold = 1.1 * uvLen;
if ( minProj > projThreshold )
{
double proj = uvDirN * uvDir * kSafe;
if ( proj < stepSize && proj > minStepSize )
stepSize = proj;
+ else if ( proj < minStepSize )
+ stepSize = minStepSize;
}
}
gp_Pnt2d newUV;
- if ( stepSize == uvLen )
+ if ( uvLen - stepSize < _len / 20. )
{
newUV = tgtUV;
_pos.clear();
{
TopoDS_Edge E = TopoDS::Edge( _sWOL );
const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
+ SMDS_EdgePosition* tgtPos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
const double u2 = helper.GetNodeU( E, n2, tgtNode );
const double uSrc = _pos[0].Coord( U_SRC );
const double lenTgt = _pos[0].Coord( LEN_TGT );
double newU = _pos[0].Coord( U_TGT );
- if ( lenTgt < 0.99 * fabs( uSrc-u2 ))
+ if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
{
_pos.clear();
}
else
{
- newU = 0.1 * uSrc + 0.9 * u2;
+ newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
}
- SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
- pos->SetUParameter( newU );
+ tgtPos->SetUParameter( newU );
#ifdef __myDEBUG
gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
Handle(Geom_Surface)& surface,
SMESH_MesherHelper& helper,
const double refSign,
- bool isCentroidal,
+ SmoothType how,
bool set3D)
{
const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
// compute new UV for the node
gp_XY newPos (0,0);
- if ( isCentroidal && _simplices.size() > 3 )
+/* if ( how == ANGULAR && _simplices.size() == 4 )
+ {
+ vector<gp_XY> corners; corners.reserve(4);
+ for ( size_t i = 0; i < _simplices.size(); ++i )
+ if ( _simplices[i]._nOpp )
+ corners.push_back( helper.GetNodeUV( face, _simplices[i]._nOpp, _node ));
+ if ( corners.size() == 4 )
+ {
+ newPos = helper.calcTFI
+ ( 0.5, 0.5,
+ corners[0], corners[1], corners[2], corners[3],
+ uv[1], uv[2], uv[3], uv[0] );
+ }
+ // vector<gp_XY> p( _simplices.size() * 2 + 1 );
+ // p.clear();
+ // for ( size_t i = 0; i < _simplices.size(); ++i )
+ // {
+ // p.push_back( uv[i] );
+ // if ( _simplices[i]._nOpp )
+ // p.push_back( helper.GetNodeUV( face, _simplices[i]._nOpp, _node ));
+ // }
+ // newPos = computeAngularPos( p, helper.GetNodeUV( face, _node ), refSign );
+ }
+ else*/ if ( how == CENTROIDAL && _simplices.size() > 3 )
{
// average centers of diagonals wieghted with their reciprocal lengths
if ( _simplices.size() == 4 )
newPos += w * ( uv[i]+uv[i2] );
}
}
- newPos /= 2 * sumWeight;
+ newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
}
}
else
{
// Laplacian smooth
- isCentroidal = false;
+ //isCentroidal = false;
for ( size_t i = 0; i < _simplices.size(); ++i )
newPos += uv[i];
newPos /= _simplices.size();
return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
}
+//================================================================================
+/*!
+ * \brief Computes new UV using angle based smoothing technic
+ */
+//================================================================================
+
+gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
+ const gp_XY& uvToFix,
+ const double refSign)
+{
+ uv.push_back( uv.front() );
+
+ vector< gp_XY > edgeDir( uv.size() );
+ vector< double > edgeSize( uv.size() );
+ for ( size_t i = 1; i < edgeDir.size(); ++i )
+ {
+ edgeDir[i-1] = uv[i] - uv[i-1];
+ edgeSize[i-1] = edgeDir[i-1].Modulus();
+ if ( edgeSize[i-1] < numeric_limits<double>::min() )
+ edgeDir[i-1].SetX( 100 );
+ else
+ edgeDir[i-1] /= edgeSize[i-1] * refSign;
+ }
+ edgeDir.back() = edgeDir.front();
+ edgeSize.back() = edgeSize.front();
+
+ gp_XY newPos(0,0);
+ int nbEdges = 0;
+ double sumSize = 0;
+ for ( size_t i = 1; i < edgeDir.size(); ++i )
+ {
+ if ( edgeDir[i-1].X() > 1. ) continue;
+ int i1 = i-1;
+ while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
+ if ( i == edgeDir.size() ) break;
+ gp_XY p = uv[i];
+ gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
+ gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
+ gp_XY bisec = norm1 + norm2;
+ double bisecSize = bisec.Modulus();
+ if ( bisecSize < numeric_limits<double>::min() )
+ {
+ bisec = -edgeDir[i1] + edgeDir[i];
+ bisecSize = bisec.Modulus();
+ }
+ bisec /= bisecSize;
+
+ gp_XY dirToN = uvToFix - p;
+ double distToN = dirToN.Modulus();
+ if ( bisec * dirToN < 0 )
+ distToN = -distToN;
+
+ newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
+ ++nbEdges;
+ sumSize += edgeSize[i1] + edgeSize[i];
+ }
+ newPos /= /*nbEdges * */sumSize;
+ return newPos;
+}
+
//================================================================================
/*!
* \brief Delete _SolidData
