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22362: EDF SMESH: Quadrangle (mapping) algorithm: enforced vertices

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fix recursive case of computeQuadPref()
This commit is contained in:
eap 2014-01-20 16:39:00 +00:00
parent f55c997d2e
commit e12cb3f8c3
2 changed files with 94 additions and 75 deletions
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159
src/StdMeshers/StdMeshers_Quadrangle_2D.cxx
View File

@ -1450,9 +1450,9 @@ bool StdMeshers_Quadrangle_2D::setNormalizedGrid (FaceQuadStruct::Ptr quad)
//purpose : auxilary function for computeQuadPref
//=======================================================================
static void shiftQuad(FaceQuadStruct::Ptr& quad, const int num)
void StdMeshers_Quadrangle_2D::shiftQuad(FaceQuadStruct::Ptr& quad, const int num )
{
quad->shift( num, /*ori=*/true );
quad->shift( num, /*ori=*/true, /*keepGrid=*/myQuadList.size() > 1 );
}
//================================================================================
@ -1460,10 +1460,12 @@ static void shiftQuad(FaceQuadStruct::Ptr& quad, const int num)
* \brief Rotate sides of a quad by given nb of quartes
* \param nb - number of rotation quartes
* \param ori - to keep orientation of sides as in an unit quad or not
* \param keepGrid - if \c true Side::grid is not changed, Side::from and Side::to
* are altered instead
*/
//================================================================================
void FaceQuadStruct::shift( size_t nb, bool ori )
void FaceQuadStruct::shift( size_t nb, bool ori, bool keepGrid )
{
if ( nb == 0 ) return;
@ -1477,7 +1479,7 @@ void FaceQuadStruct::shift( size_t nb, bool ori )
bool wasForward = (i < QUAD_TOP_SIDE);
bool newForward = (id < QUAD_TOP_SIDE);
if ( wasForward != newForward )
side[ i ].Reverse();
side[ i ].Reverse( keepGrid );
}
newSides[ id ] = side[ i ];
sidePtrs[ i ] = & side[ i ];
@ -1580,11 +1582,11 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
{
// rotate the quad to have nt > nb [and nr > nl]
if ( nb > nt )
quad->shift( nr > nl ? 1 : 2, true );
shiftQuad ( quad, nr > nl ? 1 : 2 );
else if ( nr > nl )
quad->shift( nb == nt ? 1 : 0, true );
shiftQuad( quad, nb == nt ? 1 : 0 );
else if ( nl > nr )
quad->shift( 3, true );
shiftQuad( quad, 3 );
}
nb = quad->side[0].NbPoints();
@ -1625,24 +1627,27 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
// 0------------0
// 0 bottom 1
const vector<UVPtStruct>& uv_eb_vec = quad->side[0].GetUVPtStruct(true,0);
const vector<UVPtStruct>& uv_er_vec = quad->side[1].GetUVPtStruct(false,1);
const vector<UVPtStruct>& uv_et_vec = quad->side[2].GetUVPtStruct(true,1);
const vector<UVPtStruct>& uv_el_vec = quad->side[3].GetUVPtStruct(false,0);
const int bfrom = quad->side[0].from;
const int rfrom = quad->side[1].from;
const int tfrom = quad->side[2].from;
const int lfrom = quad->side[3].from;
if (uv_eb_vec.size() < nb + bfrom ||
uv_er_vec.size() < nr + rfrom ||
uv_et_vec.size() < nt + tfrom ||
uv_el_vec.size() < nl + lfrom)
{
const vector<UVPtStruct>& uv_eb_vec = quad->side[0].GetUVPtStruct(true,0);
const vector<UVPtStruct>& uv_er_vec = quad->side[1].GetUVPtStruct(false,1);
const vector<UVPtStruct>& uv_et_vec = quad->side[2].GetUVPtStruct(true,1);
const vector<UVPtStruct>& uv_el_vec = quad->side[3].GetUVPtStruct(false,0);
if (uv_eb_vec.empty() ||
uv_er_vec.empty() ||
uv_et_vec.empty() ||
uv_el_vec.empty())
return error(COMPERR_BAD_INPUT_MESH);
const UVPtStruct * uv_eb = & uv_eb_vec[0] + bfrom;
const UVPtStruct * uv_er = & uv_er_vec[0] + rfrom;
const UVPtStruct * uv_et = & uv_et_vec[0] + tfrom;
const UVPtStruct * uv_el = & uv_el_vec[0] + lfrom;
}
FaceQuadStruct::SideIterator uv_eb, uv_er, uv_et, uv_el;
uv_eb.Init( quad->side[0] );
uv_er.Init( quad->side[1] );
uv_et.Init( quad->side[2] );
uv_el.Init( quad->side[3] );
gp_UV a0,a1,a2,a3, p0,p1,p2,p3, uv;
double x,y;
@ -1654,7 +1659,7 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
if ( !myForcedPnts.empty() )
{
if ( dv != 0 && dh != 0 )
if ( dv != 0 && dh != 0 ) // here myQuadList.size() == 1
{
const int dmin = Min( dv, dh );
@ -1688,10 +1693,11 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
x = uv_et[ dmin ].normParam;
p0 = quad->side[0].grid->Value2d( x ).XY();
p2 = uv_et[ dmin ].UV();
for ( int i = 1; i < nl; ++i )
double y0 = uv_er[ dmin ].normParam;
for ( int i = 1; i < nl-1; ++i )
{
y = uv_er[ i + dmin ].normParam;
p1 = uv_er[ i + dmin ].UV();
y = y0 + i / ( nl-1. ) * ( 1. - y0 );
p1 = quad->side[1].grid->Value2d( y ).XY();
p3 = quad->side[3].grid->Value2d( y ).XY();
uv = calcUV( x,y, a0,a1,a2,a3, p0,p1,p2,p3 );
pointsLCt[ i ].u = uv.X();
@ -1709,11 +1715,9 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
p1 = uv_er[ dmin ].UV();
p3 = quad->side[3].grid->Value2d( y ).XY();
double x0 = uv_et[ dmin ].normParam;
double xn = uv_et[ dmin+nb-1 ].normParam;
double kx = ( 1. - x0 ) / ( xn - x0 );
for ( int i = 1; i < nb-1; ++i )
{
x = x0 + ( uv_et[ i + dmin ].normParam - x0 ) * kx;
x = x0 + i / ( nb-1. ) * ( 1. - x0 );
p2 = quad->side[2].grid->Value2d( x ).XY();
p0 = quad->side[0].grid->Value2d( x ).XY();
uv = calcUV( x,y, a0,a1,a2,a3, p0,p1,p2,p3 );
@ -1764,7 +1768,12 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
} // if ( dv != 0 && dh != 0 )
// Case dv == 0
const int db = quad->side[0].IsReversed() ? -1 : +1;
const int dr = quad->side[1].IsReversed() ? -1 : +1;
const int dt = quad->side[2].IsReversed() ? -1 : +1;
const int dl = quad->side[3].IsReversed() ? -1 : +1;
// Case dv == 0, here possibly myQuadList.size() > 1
//
// lw nb lw = dh/2
// +------------+
@ -1778,15 +1787,18 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
// +------------+
const int lw = dh/2; // lateral width
const double lL = quad->side[3].Length();
const double lLwL = quad->side[2].Length( tfrom, tfrom + lw );
const double yCbL = lLwL / ( lLwL + lL );
const double lR = quad->side[1].Length();
const double lLwR = quad->side[2].Length( tfrom + lw + nb-1,
tfrom + lw + nb-1 + lw );
const double yCbR = lLwR / ( lLwR + lR );
double yCbL, yCbR;
{
double lL = quad->side[3].Length();
double lLwL = quad->side[2].Length( tfrom,
tfrom + ( lw ) * dt );
yCbL = lLwL / ( lLwL + lL );
double lR = quad->side[1].Length();
double lLwR = quad->side[2].Length( tfrom + ( lw + nb-1 ) * dt,
tfrom + ( lw + nb-1 + lw ) * dt);
yCbR = lLwR / ( lLwR + lR );
}
// Make sides separating domains Cb and L and R
StdMeshers_FaceSidePtr sideLCb, sideRCb;
UVPtStruct pTBL, pTBR; // points where 3 domains meat
@ -1809,8 +1821,10 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
x = quad->side[2].Param( i2 );
y = yCbR * i / lw;
p1 = quad->side[1].Value2d( y );
p0 = quad->side[0].Value2d( x );
p2 = uv_et[ i2 ].UV();
p3 = quad->side[3].Value2d( y );
uv = calcUV( x,y, a0,a1,a2,a3, p0,p1,p2,p3 );
pointsRCb[ i ].u = uv.X();
pointsRCb[ i ].v = uv.Y();
@ -1891,7 +1905,7 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
qL->side[1] = sideLCt;
qL->side[2] = quad->side[2];
qL->side[3] = quad->side[3];
qL->side[2].to = lw + 1 + tfrom;
qL->side[2].to = ( lw + 1 ) * dt + tfrom;
// Make R quad
FaceQuadStruct* qR = new FaceQuadStruct( quad->face, "R" );
myQuadList.push_back( FaceQuadStruct::Ptr( qR ));
@ -1899,16 +1913,17 @@ bool StdMeshers_Quadrangle_2D::computeQuadPref (SMESH_Mesh & aMesh,
qR->side[0] = sideRCb;
qR->side[0].from = lw;
qR->side[0].to = -1;
qR->side[0].di = -1;
qR->side[1] = quad->side[1];
qR->side[2] = quad->side[2];
qR->side[2].from = lw + nb-1 + tfrom;
qR->side[2].from = ( lw + nb-1 ) * dt + tfrom;
qR->side[3] = sideRCt;
// Make Ct from the main quad
FaceQuadStruct::Ptr qCt = quad;
qCt->side[0] = sideCbCt;
qCt->side[1] = sideRCt;
qCt->side[2].from = lw + tfrom;
qCt->side[2].to = lw + nb + tfrom;
qCt->side[2].from = ( lw ) * dt + tfrom;
qCt->side[2].to = ( lw + nb ) * dt + tfrom;
qCt->side[3] = sideLCt;
qCt->uv_grid.clear();
qCt->name = "Ct";
@ -4117,7 +4132,7 @@ int StdMeshers_Quadrangle_2D::getCorners(const TopoDS_Face& theFace,
//================================================================================
FaceQuadStruct::Side::Side(StdMeshers_FaceSidePtr theGrid)
: grid(theGrid), nbNodeOut(0), from(0), to(theGrid ? theGrid->NbPoints() : 0 )
: grid(theGrid), nbNodeOut(0), from(0), to(theGrid ? theGrid->NbPoints() : 0 ), di(1)
{
}
@ -4300,25 +4315,25 @@ bool StdMeshers_Quadrangle_2D::addEnforcedNodes()
for ( int dj = 0; dj < 2; ++dj )
{
double dist2 = ( myForcedPnts[ iFP ].uv - quad->UVPt( i+di,j+dj ).UV() ).SquareModulus();
ijByDist.insert( make_pair( dist2, make_pair( i+di,j+dj )));
ijByDist.insert( make_pair( dist2, make_pair( di,dj )));
}
// try all nodes starting from the closest one
set< FaceQuadStruct::Ptr > changedQuads;
multimap< double, pair< int, int > >::iterator d2ij = ijByDist.begin();
for ( ; !isNodeEnforced && d2ij != ijByDist.end(); ++d2ij )
{
i = d2ij->second.first;
j = d2ij->second.second;
int di = d2ij->second.first;
int dj = d2ij->second.second;
// check if a node is at a side
int iSide = -1;
if ( j == 0 )
if ( dj== 0 && j == 0 )
iSide = QUAD_BOTTOM_SIDE;
else if ( j+1 == quad->jSize )
else if ( dj == 1 && j+2 == quad->jSize )
iSide = QUAD_TOP_SIDE;
else if ( i == 0 )
else if ( di == 0 && i == 0 )
iSide = QUAD_LEFT_SIDE;
else if ( i+1 == quad->iSize )
else if ( di == 1 && i+2 == quad->iSize )
iSide = QUAD_RIGHT_SIDE;
if ( iSide > -1 ) // ----- node is at a side
@ -4367,18 +4382,20 @@ bool StdMeshers_Quadrangle_2D::addEnforcedNodes()
}
else // ------------------ node is inside the quad
{
i += di;
j += dj;
// make a new side passing through IJ node and split the quad
int indForced, iNewSide;
if ( quad->iSize < quad->jSize ) // split vertically
{
quad->updateUV( myForcedPnts[ iFP ].uv, i, j, /*isVert=*/true );
indForced = i;
indForced = j;
iNewSide = splitQuad( quad, i, 0 );
}
else
{
quad->updateUV( myForcedPnts[ iFP ].uv, i, j, /*isVert=*/false );
indForced = j;
indForced = i;
iNewSide = splitQuad( quad, 0, j );
}
FaceQuadStruct::Ptr newQuad = myQuadList.back();
@ -4702,7 +4719,11 @@ void StdMeshers_Quadrangle_2D::updateSideUV( FaceQuadStruct::Side& side,
// update UV of the side
vector<UVPtStruct>& sidePoints = (vector<UVPtStruct>&) side.GetUVPtStruct();
for ( int i = iFrom; i < iTo; ++i )
sidePoints[ i ] = tmpQuad->UVPt( 1, i-iFrom );
{
const uvPtStruct& uvPt = tmpQuad->UVPt( 1, i-iFrom );
sidePoints[ i ].u = uvPt.u;
sidePoints[ i ].v = uvPt.v;
}
}
//================================================================================
@ -4996,6 +5017,7 @@ FaceQuadStruct::Side& FaceQuadStruct::Side::operator=(const Side& otherSide)
grid = otherSide.grid;
from = otherSide.from;
to = otherSide.to;
di = otherSide.di;
forced_nodes = otherSide.forced_nodes;
contacts = otherSide.contacts;
nbNodeOut = otherSide.nbNodeOut;
@ -5021,7 +5043,7 @@ FaceQuadStruct::Side& FaceQuadStruct::Side::operator=(const Side& otherSide)
int FaceQuadStruct::Side::ToSideIndex( int quadNodeIndex ) const
{
return ( from > to ) ? ( from - quadNodeIndex ) : ( quadNodeIndex + from );
return from + di * quadNodeIndex;
}
//================================================================================
@ -5032,7 +5054,7 @@ int FaceQuadStruct::Side::ToSideIndex( int quadNodeIndex ) const
int FaceQuadStruct::Side::ToQuadIndex( int sideNodeIndex ) const
{
return ( from > to ) ? ( from - sideNodeIndex ) : ( sideNodeIndex - from );
return ( sideNodeIndex - from ) * di;
}
//================================================================================
@ -5041,25 +5063,18 @@ int FaceQuadStruct::Side::ToQuadIndex( int sideNodeIndex ) const
*/
//================================================================================
bool FaceQuadStruct::Side::Reverse()
bool FaceQuadStruct::Side::Reverse(bool keepGrid)
{
if ( grid )
{
// if ( nbNodeOut == 0 )
// {
// if ( from > to )
// {
// from++;
// to++;
// }
// else
// {
// from--;
// to--;
// }
// std::swap( from, to );
// }
// else
if ( keepGrid )
{
from -= di;
to -= di;
std::swap( from, to );
di *= -1;
}
else
{
grid->Reverse();
}
@ -5126,8 +5141,8 @@ void FaceQuadStruct::Side::AddContact( int ip, Side* side, int iop )
double FaceQuadStruct::Side::Param( int i ) const
{
const vector<UVPtStruct>& points = GetUVPtStruct();
return (( points[ from + i ].normParam - points[ from ].normParam ) /
( points[ to - 1 ].normParam - points[ from ].normParam ));
return (( points[ from + i * di ].normParam - points[ from ].normParam ) /
( points[ to - 1 * di ].normParam - points[ from ].normParam ));
}
//================================================================================
@ -5140,7 +5155,7 @@ gp_XY FaceQuadStruct::Side::Value2d( double x ) const
{
const vector<UVPtStruct>& points = GetUVPtStruct();
double u = ( points[ from ].normParam +
x * ( points[ to-1 ].normParam - points[ from ].normParam ));
x * ( points[ to-di ].normParam - points[ from ].normParam ));
return grid->Value2d( u ).XY();
}

8
src/StdMeshers/StdMeshers_Quadrangle_2D.hxx
View File

@ -58,6 +58,7 @@ struct FaceQuadStruct
};
StdMeshers_FaceSidePtr grid;
int from, to; // indices of grid points used by the quad
int di; // +1 or -1 depending on IsReversed()
std::set<int> forced_nodes; // indices of forced grid points
std::vector<Contact> contacts; // contacts with sides of other quads
int nbNodeOut; // nb of missing nodes on an opposite shorter side
@ -71,7 +72,7 @@ struct FaceQuadStruct
int ToQuadIndex( int sideNodeIndex ) const;
bool IsForced( int nodeIndex ) const;
bool IsReversed() const { return nbNodeOut ? false : to < from; }
bool Reverse();
bool Reverse(bool keepGrid);
int NbPoints() const { return Abs( to - from ); }
double Param( int nodeIndex ) const;
double Length( int from=-1, int to=-1) const;
@ -105,6 +106,7 @@ struct FaceQuadStruct
bool More() const { return uvPtr != uvEnd; }
void Next() { uvPtr += dPtr; ++counter; }
UVPtStruct& UVPt() const { return (UVPtStruct&) *uvPtr; }
UVPtStruct& operator[](int i) { return (UVPtStruct&) uvPtr[ i*dPtr]; }
int Count() const { return counter; }
};
@ -117,7 +119,7 @@ struct FaceQuadStruct
FaceQuadStruct ( const TopoDS_Face& F = TopoDS_Face(), const std::string& nm="main" );
UVPtStruct& UVPt( int i, int j ) { return uv_grid[ i + j * iSize ]; }
void shift ( size_t nb, bool keepUnitOri );
void shift ( size_t nb, bool keepUnitOri, bool keepGrid=false );
int & nbNodeOut( int iSide ) { return side[ iSide ].nbNodeOut; }
bool findCell ( const gp_XY& uv, int & i, int & j );
bool isNear ( const gp_XY& uv, int & i, int & j, int nbLoops=1 );
@ -212,6 +214,8 @@ protected:
int splitQuad(FaceQuadStruct::Ptr quad, int i, int j);
void shiftQuad(FaceQuadStruct::Ptr& quad, const int num );
typedef std::map< StdMeshers_FaceSidePtr, std::vector< FaceQuadStruct::Ptr > > TQuadsBySide;
void updateSideUV( FaceQuadStruct::Side& side,
int iForced,