X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=src%2FStdMeshers%2FStdMeshers_ViscousLayers.cxx;h=88b8cbb00ba485dba9ba995b7f883fbbda2ddda1;hp=8212b0a8b4d4f407e847ce6376be88d99f9a0162;hb=e956f25bc69faa3afab283214854e7668b5c0622;hpb=c150e1e4c40479c83b47cfb732f240c5df3b5d62 diff --git a/src/StdMeshers/StdMeshers_ViscousLayers.cxx b/src/StdMeshers/StdMeshers_ViscousLayers.cxx index 8212b0a8b..88b8cbb00 100644 --- a/src/StdMeshers/StdMeshers_ViscousLayers.cxx +++ b/src/StdMeshers/StdMeshers_ViscousLayers.cxx @@ -2926,15 +2926,6 @@ bool _ViscousBuilder::findShapesToSmooth( _SolidData& data ) // define allowed thickness computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen - data._maxThickness = 0; - data._minThickness = 1e100; - list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin(); - for ( ; hyp != data._hyps.end(); ++hyp ) - { - data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() ); - data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() ); - } - //const double tgtThick = /*Min( 0.5 * data._geomSize, */data._maxThickness; // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's // boundary inclined to the shape at a sharp angle @@ -4363,7 +4354,7 @@ void _ViscousBuilder::computeGeomSize( _SolidData& data ) _EdgesOnShape& eos = data._edgesOnShape[ iS ]; if ( eos._edges.empty() ) continue; - // get neighbor faces intersection with which should not be considered since + // get neighbor faces, intersection with which should not be considered since // collisions are avoided by means of smoothing set< TGeomID > neighborFaces; if ( eos._hyp.ToSmooth() ) @@ -4393,6 +4384,78 @@ void _ViscousBuilder::computeGeomSize( _SolidData& data ) } } } + + data._maxThickness = 0; + data._minThickness = 1e100; + list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin(); + for ( ; hyp != data._hyps.end(); ++hyp ) + { + data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() ); + data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() ); + } + + // Limit inflation step size by geometry size found by intersecting + // normals of _LayerEdge's with mesh faces + if ( data._stepSize > 0.3 * data._geomSize ) + limitStepSize( data, 0.3 * data._geomSize ); + + if ( data._stepSize > data._minThickness ) + limitStepSize( data, data._minThickness ); + + + // ------------------------------------------------------------------------- + // Detect _LayerEdge which can't intersect with opposite or neighbor layer, + // so no need in detecting intersection at each inflation step + // ------------------------------------------------------------------------- + + int nbSteps = data._maxThickness / data._stepSize; + if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 ) + return; + + vector< const SMDS_MeshElement* > closeFaces; + int nbDetected = 0; + + for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS ) + { + _EdgesOnShape& eos = data._edgesOnShape[ iS ]; + if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE ) + continue; + + for ( size_t i = 0; i < eos.size(); ++i ) + { + SMESH_NodeXYZ p( eos[i]->_nodes[0] ); + double radius = data._maxThickness + 2 * eos[i]->_maxLen; + closeFaces.clear(); + searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces ); + + bool toIgnore = true; + for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF ) + if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID || + data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() )))) + { + // check if a _LayerEdge will inflate in a direction opposite to a direction + // toward a close face + bool allBehind = true; + for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN ) + { + SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN )); + allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize ); + } + toIgnore = allBehind; + } + + + if ( toIgnore ) // no need to detect intersection + { + eos[i]->Set( _LayerEdge::INTERSECTED ); + ++nbDetected; + } + } + } + + debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected ); + + return; } //================================================================================ @@ -4405,14 +4468,7 @@ bool _ViscousBuilder::inflate(_SolidData& data) { SMESH_MesherHelper helper( *_mesh ); - // Limit inflation step size by geometry size found by itersecting - // normals of _LayerEdge's with mesh faces - if ( data._stepSize > 0.3 * data._geomSize ) - limitStepSize( data, 0.3 * data._geomSize ); - const double tgtThick = data._maxThickness; - if ( data._stepSize > data._minThickness ) - limitStepSize( data, data._minThickness ); if ( data._stepSize < 1. ) data._epsilon = data._stepSize * 1e-7; @@ -4530,6 +4586,7 @@ bool _ViscousBuilder::inflate(_SolidData& data) break; } #endif + // new step size limitStepSize( data, 0.25 * distToIntersection ); if ( data._stepSizeNodes[0] ) @@ -4851,7 +4908,8 @@ bool _ViscousBuilder::smoothAndCheck(_SolidData& data, _LayerEdge* edge = eos._edges[i]; if ( edge->_nodes.size() < 2 ) continue; SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back(); - gp_XYZ prevXYZ = edge->PrevCheckPos( &eos ); + SMESH_TNodeXYZ prevXYZ = edge->_nodes[0]; + //gp_XYZ prevXYZ = edge->PrevCheckPos( &eos ); //const gp_XYZ& prevXYZ = edge->PrevPos(); for ( size_t j = 0; j < edge->_simplices.size(); ++j ) if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol )) @@ -5654,17 +5712,16 @@ bool _Smoother1D::smoothAnalyticEdge( _SolidData& data, if ( iFrom >= iTo ) continue; _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0]; _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1]; - gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos ); - gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos ); - double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ]; - double param1 = _leParams[ iTo ]; - const gp_XY rangeUV = uv1 - uv0; + gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos ); + gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos ); + double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ]; + double param1 = _leParams[ iTo ]; + gp_XY rangeUV = uv1 - uv0; for ( size_t i = iFrom; i < iTo; ++i ) { if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue; double param = ( _leParams[i] - param0 ) / ( param1 - param0 ); gp_XY newUV = uv0 + param * rangeUV; - _eos[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 ); gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() ); SMDS_MeshNode* tgtNode = const_cast( _eos[i]->_nodes.back() ); @@ -5674,6 +5731,28 @@ bool _Smoother1D::smoothAnalyticEdge( _SolidData& data, SMDS_FacePosition* pos = static_cast( tgtNode->GetPosition() ); pos->SetUParameter( newUV.X() ); pos->SetVParameter( newUV.Y() ); + + gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 ); + + if ( !_eos[i]->Is( _LayerEdge::SMOOTHED )) + { + _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237) + if ( _eos[i]->_pos.size() > 2 ) + { + // modify previous positions to make _LayerEdge less sharply bent + vector& uvVec = _eos[i]->_pos; + const gp_XYZ uvShift = newUV0 - uvVec.back(); + const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus(); + int iPrev = uvVec.size() - 2; + while ( iPrev > 0 ) + { + double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2; + uvVec[ iPrev ] += uvShift * r; + --iPrev; + } + } + } + _eos[i]->_pos.back() = newUV0; } } } @@ -5764,6 +5843,8 @@ bool _Smoother1D::smoothAnalyticEdge( _SolidData& data, SMDS_FacePosition* pos = static_cast( tgtNode->GetPosition() ); pos->SetUParameter( newUV.X() ); pos->SetVParameter( newUV.Y() ); + + _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237) } } return true; @@ -5836,8 +5917,9 @@ bool _Smoother1D::smoothComplexEdge( _SolidData& data, // project tgt nodes of extreme _LayerEdge's to the offset segments // ----------------------------------------------------------------- - if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED )) _iSeg[0] = 0; - if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED )) _iSeg[1] = _offPoints.size()-2; + const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED; + if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0; + if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2; gp_Pnt pExtreme[2], pProj[2]; for ( int is2nd = 0; is2nd < 2; ++is2nd ) @@ -5893,10 +5975,14 @@ bool _Smoother1D::smoothComplexEdge( _SolidData& data, gp_Vec vDiv1( pExtreme[1], pProj[1] ); double d0 = vDiv0.Magnitude(); double d1 = vDiv1.Magnitude(); - if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0; - else e[0]->_len -= d0; - if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1; - else e[1]->_len -= d1; + if ( e[0]->Is( _LayerEdge::BLOCKED )) { + if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0; + else e[0]->_len -= d0; + } + if ( e[1]->Is( _LayerEdge::BLOCKED )) { + if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1; + else e[1]->_len -= d1; + } // --------------------------------------------------------------------------------- // compute normalized length of the offset segments located between the projections @@ -6011,8 +6097,8 @@ void _Smoother1D::prepare(_SolidData& data) // divide E to have offset segments with low deflection BRepAdaptor_Curve c3dAdaptor( E ); - const double curDeflect = 0.1; //0.3; // 0.01; // Curvature deflection - const double angDeflect = 0.1; //0.2; // 0.09; // Angular deflection + const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2]*sin(p1p2,p1pM) + const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2) GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect); if ( discret.NbPoints() <= 2 ) { @@ -6022,14 +6108,39 @@ void _Smoother1D::prepare(_SolidData& data) const double u0 = c3dAdaptor.FirstParameter(); gp_Pnt p; gp_Vec tangent; - _offPoints.resize( discret.NbPoints() ); - for ( size_t i = 0; i < _offPoints.size(); i++ ) + if ( discret.NbPoints() >= (int) _eos.size() + 2 ) { - double u = discret.Parameter( i+1 ); - c3dAdaptor.D1( u, p, tangent ); - _offPoints[i]._xyz = p.XYZ(); - _offPoints[i]._edgeDir = tangent.XYZ(); - _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen; + _offPoints.resize( discret.NbPoints() ); + for ( size_t i = 0; i < _offPoints.size(); i++ ) + { + double u = discret.Parameter( i+1 ); + c3dAdaptor.D1( u, p, tangent ); + _offPoints[i]._xyz = p.XYZ(); + _offPoints[i]._edgeDir = tangent.XYZ(); + _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen; + } + } + else + { + std::vector< double > params( _eos.size() + 2 ); + + params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] ); + params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] ); + for ( size_t i = 0; i < _eos.size(); i++ ) + params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] ); + + if ( params[1] > params[ _eos.size() ] ) + std::reverse( params.begin() + 1, params.end() - 1 ); + + _offPoints.resize( _eos.size() + 2 ); + for ( size_t i = 0; i < _offPoints.size(); i++ ) + { + const double u = params[i]; + c3dAdaptor.D1( u, p, tangent ); + _offPoints[i]._xyz = p.XYZ(); + _offPoints[i]._edgeDir = tangent.XYZ(); + _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen; + } } // set _2edges @@ -6069,8 +6180,14 @@ void _Smoother1D::prepare(_SolidData& data) int iLBO = _offPoints.size() - 2; // last but one - _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] ); - _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] ); + if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL )) + _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] ); + else + _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] ); + if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL )) + _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] ); + else + _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] ); _leOnV[ 0 ]._len = 0; _leOnV[ 1 ]._len = 0; _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor; @@ -6104,7 +6221,7 @@ void _Smoother1D::prepare(_SolidData& data) //================================================================================ /*! - * \brief set _normal of _leOnV[is2nd] to be normal to the EDGE + * \brief return _normal of _leOnV[is2nd] normal to the EDGE */ //================================================================================ @@ -6115,6 +6232,9 @@ gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal, gp_XYZ norm = edgeDir ^ cross; double size = norm.Modulus(); + // if ( size == 0 ) // MULTI_NORMAL _LayerEdge + // return gp_XYZ( 1e-100, 1e-100, 1e-100 ); + return norm / size; } @@ -6834,8 +6954,8 @@ bool _ViscousBuilder::updateNormals( _SolidData& data, // compute new _normals for ( size_t i = 0; i < intEdgesDist.size(); ++i ) { - _LayerEdge* edge2 = intEdgesDist[i].first; - double distWgt = edge1->_len / intEdgesDist[i].second; + _LayerEdge* edge2 = intEdgesDist[i].first; + double distWgt = edge1->_len / intEdgesDist[i].second; // if ( edge1->Is( _LayerEdge::BLOCKED ) && // edge2->Is( _LayerEdge::BLOCKED )) continue; if ( edge2->Is( _LayerEdge::MARKED )) continue; @@ -6876,9 +6996,14 @@ bool _ViscousBuilder::updateNormals( _SolidData& data, e2neIt->second._maxLen = 0.7 * minIntDist / edge1->_lenFactor; if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 ) e2neIt->second._normal += dir2; + e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first; e2neIt->second._normal += distWgt * newNormal; - e2neIt->second._cosin = edge2->_cosin; + if ( Precision::IsInfinite( zeroEdge._maxLen )) + { + e2neIt->second._cosin = edge2->_cosin; + e2neIt->second._maxLen = 1.3 * minIntDist / edge1->_lenFactor; + } if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 ) e2neIt->second._normal += dir1; } @@ -9710,8 +9835,20 @@ bool _ViscousBuilder::refine(_SolidData& data) } else if ( eos._isRegularSWOL ) // usual SWOL { - for ( size_t j = 1; j < edge._pos.size(); ++j ) - segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus(); + if ( edge.Is( _LayerEdge::SMOOTHED )) + { + SMESH_NodeXYZ p0( edge._nodes[0] ); + for ( size_t j = 1; j < edge._pos.size(); ++j ) + { + gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ(); + segLen[j] = ( pj - p0 ) * edge._normal; + } + } + else + { + for ( size_t j = 1; j < edge._pos.size(); ++j ) + segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus(); + } } else if ( !surface.IsNull() ) // SWOL surface with singularities {