#include <GCPnts_AbscissaPoint.hxx>
#include <GCPnts_UniformAbscissa.hxx>
#include <TColStd_ListIteratorOfListOfInteger.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
+#include <TopTools_ListOfShape.hxx>
#include <string>
-#include <algorithm>
//=============================================================================
/*!
isOk = false;
if (_maxElementArea > 0)
{
- _edgeLength = 2 * sqrt(_maxElementArea); // triangles : minorant
+// _edgeLength = 2 * sqrt(_maxElementArea); // triangles : minorant
+ _edgeLength = 2 * sqrt(_maxElementArea/sqrt(3.0));
isOk = true;
}
else
Z nutysu = 1; // 1: il existe un fonction areteideale_()
// Z nutysu=0; // 0: on utilise aretmx
R aretmx = _edgeLength; // longueur max aretes future triangulation
- //SCRUTE(aretmx);
nblf = NumberOfWires(F);
- //SCRUTE(nblf);
nudslf = new Z[1 + nblf];
nudslf[0] = 0;
int iw = 1;
int nbpnt = 0;
- const TopoDS_Wire OW1 = BRepTools::OuterWire(F);
- nbpnt += NumberOfPoints(aMesh, OW1);
+ myOuterWire = BRepTools::OuterWire(F);
+ nbpnt += NumberOfPoints(aMesh, myOuterWire);
+ if ( nbpnt < 3 ) // ex: a circle with 2 segments
+ return false;
nudslf[iw++] = nbpnt;
- //SCRUTE(nbpnt);
for (TopExp_Explorer exp(F, TopAbs_WIRE); exp.More(); exp.Next())
{
const TopoDS_Wire & W = TopoDS::Wire(exp.Current());
- if (!OW1.IsSame(W))
+ if (!myOuterWire.IsSame(W))
{
nbpnt += NumberOfPoints(aMesh, W);
nudslf[iw++] = nbpnt;
- //SCRUTE(nbpnt);
}
}
+ // avoid passing same uv points for a vertex common to 2 wires
+ TopTools_IndexedDataMapOfShapeListOfShape VWMap;
+ if ( iw - 1 > 1 ) // nbofWires > 1
+ TopExp::MapShapesAndAncestors( F , TopAbs_VERTEX, TopAbs_WIRE, VWMap );
+
uvslf = new R2[nudslf[nblf]];
- //SCRUTE(nudslf[nblf]);
int m = 0;
- map<int, const SMDS_MeshNode*> mefistoToDS; // correspondence mefisto index--> points IDNodes
- TopoDS_Wire OW = BRepTools::OuterWire(F);
- LoadPoints(aMesh, F, OW, uvslf, m, mefistoToDS);
- //SCRUTE(m);
+ double scalex, scaley;
+ ComputeScaleOnFace(aMesh, F, scalex, scaley);
+
+ map<int, const SMDS_MeshNode*> mefistoToDS; // correspondence mefisto index--> points IDNodes
+ if ( !LoadPoints(aMesh, F, myOuterWire, uvslf, m,
+ mefistoToDS, scalex, scaley, VWMap))
+ return false;
for (TopExp_Explorer exp(F, TopAbs_WIRE); exp.More(); exp.Next())
{
const TopoDS_Wire & W = TopoDS::Wire(exp.Current());
- if (!OW.IsSame(W))
+ if (!myOuterWire.IsSame(W))
{
- LoadPoints(aMesh, F, W, uvslf, m, mefistoToDS);
- //SCRUTE(m);
+ if (! LoadPoints(aMesh, F, W, uvslf, m,
+ mefistoToDS, scalex, scaley, VWMap ))
+ return false;
}
}
-// SCRUTE(nudslf[nblf]);
-// for (int i=0; i<=nblf; i++)
-// {
-// MESSAGE(" -+- " <<i<< " "<< nudslf[i]);
-// }
-// for (int i=0; i<nudslf[nblf]; i++)
-// {
-// MESSAGE(" -+- " <<i<< " "<< uvslf[i]);
-// }
-// SCRUTE(nutysu);
-// SCRUTE(aretmx);
-// SCRUTE(nblf);
-
- MESSAGE("MEFISTO triangulation ...");
+
uvst = NULL;
nust = NULL;
aptrte(nutysu, aretmx,
{
MESSAGE("... End Triangulation Generated Triangle Number " << nbt);
MESSAGE(" Node Number " << nbst);
- //SCRUTE(nbst);
- //SCRUTE(nbt);
StoreResult(aMesh, nbst, uvst, nbt, nust, F,
- faceIsForward, mefistoToDS);
+ faceIsForward, mefistoToDS, scalex, scaley);
isOk = true;
}
else
return isOk;
}
+//=======================================================================
+//function : fixOverlappedLinkUV
+//purpose : prevent failure due to overlapped adjacent links
+//=======================================================================
+
+static bool fixOverlappedLinkUV( R2& uv0, const R2& uv1, const R2& uv2 )
+{
+ gp_XY v1( uv0.x - uv1.x, uv0.y - uv1.y );
+ gp_XY v2( uv2.x - uv1.x, uv2.y - uv1.y );
+
+ double tol2 = DBL_MIN * DBL_MIN;
+ double sqMod1 = v1.SquareModulus();
+ if ( sqMod1 <= tol2 ) return false;
+ double sqMod2 = v2.SquareModulus();
+ if ( sqMod2 <= tol2 ) return false;
+
+ double dot = v1*v2;
+
+ // check sinus >= 1.e-3
+ const double minSin = 1.e-3;
+ if ( dot > 0 && 1 - dot * dot / ( sqMod1 * sqMod2 ) < minSin * minSin ) {
+ MESSAGE(" ___ FIX UV ____" << uv0.x << " " << uv0.y);
+ v1.SetCoord( -v1.Y(), v1.X() );
+ double delta = sqrt( sqMod1 ) * minSin;
+ if ( v1.X() < 0 )
+ uv0.x -= delta;
+ else
+ uv0.x += delta;
+ if ( v1.Y() < 0 )
+ uv0.y -= delta;
+ else
+ uv0.y += delta;
+// MESSAGE(" -> " << uv0.x << " " << uv0.y << " ");
+// MESSAGE("v1( " << v1.X() << " " << v1.Y() << " ) " <<
+// "v2( " << v2.X() << " " << v2.Y() << " ) ");
+// MESSAGE("SIN: " << sqrt(1 - dot * dot / (sqMod1 * sqMod2)));
+// v1.SetCoord( uv0.x - uv1.x, uv0.y - uv1.y );
+// v2.SetCoord( uv2.x - uv1.x, uv2.y - uv1.y );
+// gp_XY v3( uv2.x - uv0.x, uv2.y - uv0.y );
+// sqMod1 = v1.SquareModulus();
+// sqMod2 = v2.SquareModulus();
+// dot = v1*v2;
+// double sin = sqrt(1 - dot * dot / (sqMod1 * sqMod2));
+// MESSAGE("NEW SIN: " << sin);
+ return true;
+ }
+ return false;
+}
+
+//=======================================================================
+//function : fixCommonVertexUV
+//purpose :
+//=======================================================================
+
+static bool fixCommonVertexUV (gp_Pnt2d & theUV,
+ const TopoDS_Vertex& theV,
+ const TopoDS_Wire& theW,
+ const TopoDS_Wire& theOW,
+ const TopoDS_Face& theF,
+ const TopTools_IndexedDataMapOfShapeListOfShape & theVWMap,
+ SMESH_Mesh & theMesh)
+{
+ if( theW.IsSame( theOW ) ||
+ !theVWMap.Contains( theV )) return false;
+
+ // check if there is another wire sharing theV
+ const TopTools_ListOfShape& WList = theVWMap.FindFromKey( theV );
+ TopTools_ListIteratorOfListOfShape aWIt;
+ for ( aWIt.Initialize( WList ); aWIt.More(); aWIt.Next() )
+ if ( !theW.IsSame( aWIt.Value() ))
+ break;
+ if ( !aWIt.More() ) return false;
+
+ TopTools_ListOfShape EList;
+ list< double > UList;
+
+ // find edges of theW sharing theV
+ // and find 2d normal to them at theV
+ gp_Vec2d N(0.,0.);
+ TopoDS_Iterator itE( theW );
+ for ( ; itE.More(); itE.Next() )
+ {
+ const TopoDS_Edge& E = TopoDS::Edge( itE.Value() );
+ TopoDS_Iterator itV( E );
+ for ( ; itV.More(); itV.Next() )
+ {
+ const TopoDS_Vertex & V = TopoDS::Vertex( itV.Value() );
+ if ( !V.IsSame( theV ))
+ continue;
+ EList.Append( E );
+ Standard_Real u = BRep_Tool::Parameter( V, E );
+ UList.push_back( u );
+ double f, l;
+ Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, theF, f, l);
+ gp_Vec2d d1;
+ gp_Pnt2d p;
+ C2d->D1( u, p, d1 );
+ gp_Vec2d n( d1.Y(), -d1.X() );
+ if ( E.Orientation() == TopAbs_REVERSED )
+ n.Reverse();
+ N += n.Normalized();
+ }
+ }
+
+ // define step size by which to move theUV
+
+ gp_Pnt2d nextUV; // uv of next node on edge, most distant of the four
+ double maxDist = -DBL_MAX;
+ TopTools_ListIteratorOfListOfShape aEIt (EList);
+ list< double >::iterator aUIt = UList.begin();
+ for ( ; aEIt.More(); aEIt.Next(), aUIt++ )
+ {
+ const TopoDS_Edge& E = TopoDS::Edge( aEIt.Value() );
+ double f, l;
+ Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, theF, f, l);
+
+ double umin = DBL_MAX, umax = -DBL_MAX;
+ SMDS_NodeIteratorPtr nIt = theMesh.GetSubMesh(E)->GetSubMeshDS()->GetNodes();
+ if ( !nIt->more() ) // no nodes on edge, only on vertices
+ {
+ umin = l;
+ umax = f;
+ }
+ else
+ {
+ while ( nIt->more() ) {
+ const SMDS_MeshNode* node = nIt->next();
+ const SMDS_EdgePosition* epos =
+ static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
+ double u = epos->GetUParameter();
+ if ( u < umin )
+ umin = u;
+ if ( u > umax )
+ umax = u;
+ }
+ }
+ bool isFirstCommon = ( *aUIt == f );
+ gp_Pnt2d uv = C2d->Value( isFirstCommon ? umin : umax );
+ double dist = theUV.SquareDistance( uv );
+ if ( dist > maxDist ) {
+ maxDist = dist;
+ nextUV = uv;
+ }
+ }
+ R2 uv0, uv1, uv2;
+ uv0.x = theUV.X(); uv0.y = theUV.Y();
+ uv1.x = nextUV.X(); uv1.y = nextUV.Y();
+ uv2.x = uv0.x; uv2.y = uv0.y;
+ if ( fixOverlappedLinkUV( uv0, uv1, uv2 ))
+ {
+ double step = theUV.Distance( gp_Pnt2d( uv0.x, uv0.y ));
+
+ // move theUV along the normal by the step
+
+ N *= step;
+
+ MESSAGE("--fixCommonVertexUV move(" << theUV.X() << " " << theUV.Y()
+ << ") by (" << N.X() << " " << N.Y() << ")"
+ << endl << "--- MAX DIST " << maxDist);
+
+ theUV.SetXY( theUV.XY() + N.XY() );
+
+ return true;
+ }
+ return false;
+}
+
//=============================================================================
/*!
*
*/
//=============================================================================
-void StdMeshers_MEFISTO_2D::LoadPoints(SMESH_Mesh & aMesh,
- const TopoDS_Face & FF,
- const TopoDS_Wire & WW, R2 * uvslf, int &m,
- map<int, const SMDS_MeshNode*>&mefistoToDS)
+bool StdMeshers_MEFISTO_2D::LoadPoints(SMESH_Mesh & aMesh,
+ const TopoDS_Face & FF,
+ const TopoDS_Wire & WW,
+ R2 * uvslf,
+ int & m,
+ map<int, const SMDS_MeshNode*>&mefistoToDS,
+ double scalex,
+ double scaley,
+ const TopTools_IndexedDataMapOfShapeListOfShape& VWMap)
{
- MESSAGE("StdMeshers_MEFISTO_2D::LoadPoints");
-
- SMDS_Mesh * meshDS = aMesh.GetMeshDS();
-
- double scalex;
- double scaley;
- TopoDS_Face F = TopoDS::Face(FF.Oriented(TopAbs_FORWARD));
- ComputeScaleOnFace(aMesh, F, scalex, scaley);
-
- TopoDS_Wire W = TopoDS::Wire(WW.Oriented(TopAbs_FORWARD));
- BRepTools_WireExplorer wexp(W, F);
- for (wexp.Init(W, F); wexp.More(); wexp.Next())
- {
- const TopoDS_Edge & E = wexp.Current();
-
- // --- IDNodes of first and last Vertex
-
- TopoDS_Vertex VFirst, VLast;
- TopExp::Vertices(E, VFirst, VLast); // corresponds to f and l
-
- ASSERT(!VFirst.IsNull());
- SMDS_NodeIteratorPtr lid=
- aMesh.GetSubMesh(VFirst)->GetSubMeshDS()->GetNodes();
- const SMDS_MeshNode* idFirst = lid->next();
-
- ASSERT(!VLast.IsNull());
- lid=aMesh.GetSubMesh(VLast)->GetSubMeshDS()->GetNodes();
- const SMDS_MeshNode* idLast = lid->next();
-
- // --- edge internal IDNodes (relies on good order storage, not checked)
-
- int nbPoints = aMesh.GetSubMesh(E)->GetSubMeshDS()->NbNodes();
- //SCRUTE(nbPoints);
-
- double f, l;
- Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
-
- SMDS_NodeIteratorPtr ite= aMesh.GetSubMesh(E)->GetSubMeshDS()->GetNodes();
-
- bool isForward = (E.Orientation() == TopAbs_FORWARD);
- map<double, const SMDS_MeshNode*> params;
-
- while(ite->more())
- {
- const SMDS_MeshNode * node = ite->next();
- const SMDS_EdgePosition* epos =
- static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
- double param = epos->GetUParameter();
- params[param] = node;
- }
- // --- load 2D values into MEFISTO structure,
- // add IDNodes in mefistoToDS map
-
- if (E.Orientation() == TopAbs_FORWARD)
- {
- gp_Pnt2d p = C2d->Value(f); // first point = Vertex Forward
- uvslf[m].x = scalex * p.X();
- uvslf[m].y = scaley * p.Y();
- mefistoToDS[m + 1] = idFirst;
- //MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
- //MESSAGE("__ f "<<f<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
- m++;
- map<double, const SMDS_MeshNode*>::iterator itp = params.begin();
- for (int i = 1; i <= nbPoints; i++) // nbPoints internal
- {
- double param = (*itp).first;
- gp_Pnt2d p = C2d->Value(param);
- uvslf[m].x = scalex * p.X();
- uvslf[m].y = scaley * p.Y();
- mefistoToDS[m + 1] = (*itp).second;
-// MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
-// MESSAGE("__ "<<i<<" "<<param<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
- m++;
- itp++;
- }
- }
- else
- {
- gp_Pnt2d p = C2d->Value(l); // last point = Vertex Reversed
- uvslf[m].x = scalex * p.X();
- uvslf[m].y = scaley * p.Y();
- mefistoToDS[m + 1] = idLast;
-// MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
-// MESSAGE("__ l "<<l<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
- m++;
- map<double, const SMDS_MeshNode*>::reverse_iterator itp = params.rbegin();
- for (int i = nbPoints; i >= 1; i--)
- {
- double param = (*itp).first;
- gp_Pnt2d p = C2d->Value(param);
- uvslf[m].x = scalex * p.X();
- uvslf[m].y = scaley * p.Y();
- mefistoToDS[m + 1] = (*itp).second;
-// MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
-// MESSAGE("__ "<<i<<" "<<param<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
- m++;
- itp++;
- }
- }
- }
+// MESSAGE("StdMeshers_MEFISTO_2D::LoadPoints");
+
+ SMDS_Mesh * meshDS = aMesh.GetMeshDS();
+
+ TopoDS_Face F = TopoDS::Face(FF.Oriented(TopAbs_FORWARD));
+
+ int mInit = m, mFirst, iEdge;
+ gp_XY scale( scalex, scaley );
+
+ TopoDS_Wire W = TopoDS::Wire(WW.Oriented(TopAbs_FORWARD));
+ BRepTools_WireExplorer wexp(W, F);
+ for (wexp.Init(W, F), iEdge = 0; wexp.More(); wexp.Next(), iEdge++)
+ {
+ const TopoDS_Edge & E = wexp.Current();
+
+ // --- IDNodes of first and last Vertex
+
+ TopoDS_Vertex VFirst, VLast;
+ TopExp::Vertices(E, VFirst, VLast); // corresponds to f and l
+
+ ASSERT(!VFirst.IsNull());
+ SMDS_NodeIteratorPtr lid=
+ aMesh.GetSubMesh(VFirst)->GetSubMeshDS()->GetNodes();
+ if ( !lid->more() ) {
+ MESSAGE (" NO NODE BUILT ON VERTEX ");
+ return false;
+ }
+ const SMDS_MeshNode* idFirst = lid->next();
+
+ ASSERT(!VLast.IsNull());
+ lid=aMesh.GetSubMesh(VLast)->GetSubMeshDS()->GetNodes();
+ if ( !lid->more() ) {
+ MESSAGE (" NO NODE BUILT ON VERTEX ");
+ return false;
+ }
+ const SMDS_MeshNode* idLast = lid->next();
+
+ // --- edge internal IDNodes (relies on good order storage, not checked)
+
+ int nbPoints = aMesh.GetSubMesh(E)->GetSubMeshDS()->NbNodes();
+
+ double f, l;
+ Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
+
+ SMDS_NodeIteratorPtr ite= aMesh.GetSubMesh(E)->GetSubMeshDS()->GetNodes();
+
+ bool isForward = (E.Orientation() == TopAbs_FORWARD);
+ map<double, const SMDS_MeshNode*> params;
+
+ while(ite->more())
+ {
+ const SMDS_MeshNode * node = ite->next();
+ const SMDS_EdgePosition* epos =
+ static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
+ double param = epos->GetUParameter();
+ params[param] = node;
+ }
+ if ( nbPoints != params.size())
+ {
+ MESSAGE( "BAD NODE ON EDGE POSITIONS" );
+ return false;
+ }
+
+ mFirst = m;
+
+ // --- load 2D values into MEFISTO structure,
+ // add IDNodes in mefistoToDS map
+ if (E.Orientation() == TopAbs_FORWARD)
+ {
+ gp_Pnt2d p = C2d->Value(f).XY().Multiplied( scale ); // first point = Vertex Forward
+ if ( fixCommonVertexUV( p, VFirst, W, myOuterWire, F, VWMap, aMesh ))
+ myNodesOnCommonV.push_back( idFirst );
+ uvslf[m].x = p.X();
+ uvslf[m].y = p.Y();
+ mefistoToDS[m + 1] = idFirst;
+ //MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
+ //MESSAGE("__ f "<<f<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
+ m++;
+ map<double, const SMDS_MeshNode*>::iterator itp = params.begin();
+ for (int i = 1; i <= nbPoints; i++) // nbPoints internal
+ {
+ double param = (*itp).first;
+ gp_Pnt2d p = C2d->Value(param).XY().Multiplied( scale );
+ uvslf[m].x = p.X();
+ uvslf[m].y = p.Y();
+ mefistoToDS[m + 1] = (*itp).second;
+ //MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
+ //MESSAGE("__ "<<i<<" "<<param<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
+ m++;
+ itp++;
+ }
+ }
+ else
+ {
+ gp_Pnt2d p = C2d->Value(l).XY().Multiplied( scale ); // last point = Vertex Reversed
+ if ( fixCommonVertexUV( p, VLast, W, myOuterWire, F, VWMap, aMesh ))
+ myNodesOnCommonV.push_back( idLast );
+ uvslf[m].x = p.X();
+ uvslf[m].y = p.Y();
+ mefistoToDS[m + 1] = idLast;
+ //MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
+ //MESSAGE("__ l "<<l<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
+ m++;
+ map<double, const SMDS_MeshNode*>::reverse_iterator itp = params.rbegin();
+ for (int i = nbPoints; i >= 1; i--)
+ {
+ double param = (*itp).first;
+ gp_Pnt2d p = C2d->Value(param).XY().Multiplied( scale );
+ uvslf[m].x = p.X();
+ uvslf[m].y = p.Y();
+ mefistoToDS[m + 1] = (*itp).second;
+ //MESSAGE(" "<<m<<" "<<mefistoToDS[m+1]);
+ //MESSAGE("__ "<<i<<" "<<param<<" "<<uvslf[m].x <<" "<<uvslf[m].y);
+ m++;
+ itp++;
+ }
+ }
+ // prevent failure on overlapped adjacent links
+ if ( iEdge > 0 )
+ fixOverlappedLinkUV (uvslf[ mFirst - 1],
+ uvslf[ mFirst ],
+ uvslf[ mFirst + 1 ]);
+
+ } // for wexp
+
+ fixOverlappedLinkUV (uvslf[ m - 1],
+ uvslf[ mInit ],
+ uvslf[ mInit + 1 ]);
+
+ return true;
}
//=============================================================================
*/
//=============================================================================
-// **** a mettre dans SMESH_Algo ou SMESH_2D_Algo
-
void StdMeshers_MEFISTO_2D::ComputeScaleOnFace(SMESH_Mesh & aMesh,
const TopoDS_Face & aFace, double &scalex, double &scaley)
{
- //MESSAGE("StdMeshers_MEFISTO_2D::ComputeScaleOnFace");
- TopoDS_Face F = TopoDS::Face(aFace.Oriented(TopAbs_FORWARD));
- TopoDS_Wire W = BRepTools::OuterWire(F);
-
- BRepTools_WireExplorer wexp(W, F);
-
- double xmin = 1.e300; // min & max of face 2D parametric coord.
- double xmax = -1.e300;
- double ymin = 1.e300;
- double ymax = -1.e300;
- int nbp = 50;
- scalex = 1;
- scaley = 1;
- for (wexp.Init(W, F); wexp.More(); wexp.Next())
- {
- const TopoDS_Edge & E = wexp.Current();
- double f, l;
- Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
- for (int i = 0; i <= nbp; i++)
- {
- double param = f + (double (i) / double (nbp))*(l - f);
- gp_Pnt2d p = C2d->Value(param);
- if (p.X() < xmin)
- xmin = p.X();
- if (p.X() > xmax)
- xmax = p.X();
- if (p.Y() < ymin)
- ymin = p.Y();
- if (p.Y() > ymax)
- ymax = p.Y();
-// MESSAGE(" "<< f<<" "<<l<<" "<<param<<" "<<xmin<<" "<<xmax<<" "<<ymin<<" "<<ymax);
- }
- }
-// SCRUTE(xmin);
-// SCRUTE(xmax);
-// SCRUTE(ymin);
-// SCRUTE(ymax);
- double xmoy = (xmax + xmin) / 2.;
- double ymoy = (ymax + ymin) / 2.;
-
- Handle(Geom_Surface) S = BRep_Tool::Surface(F); // 3D surface
-
- double length_x = 0;
- double length_y = 0;
- gp_Pnt PX0 = S->Value(xmin, ymoy);
- gp_Pnt PY0 = S->Value(xmoy, ymin);
- for (int i = 1; i <= nbp; i++)
- {
- double x = xmin + (double (i) / double (nbp))*(xmax - xmin);
- gp_Pnt PX = S->Value(x, ymoy);
- double y = ymin + (double (i) / double (nbp))*(ymax - ymin);
- gp_Pnt PY = S->Value(xmoy, y);
- length_x += PX.Distance(PX0);
- length_y += PY.Distance(PY0);
- PX0.SetCoord(PX.X(), PX.Y(), PX.Z());
- PY0.SetCoord(PY.X(), PY.Y(), PY.Z());
- }
-// SCRUTE(length_x);
-// SCRUTE(length_y);
- scalex = length_x / (xmax - xmin);
- scaley = length_y / (ymax - ymin);
-// SCRUTE(scalex);
-// SCRUTE(scaley);
- ASSERT(scalex);
- ASSERT(scaley);
+ //MESSAGE("StdMeshers_MEFISTO_2D::ComputeScaleOnFace");
+ TopoDS_Face F = TopoDS::Face(aFace.Oriented(TopAbs_FORWARD));
+ TopoDS_Wire W = BRepTools::OuterWire(F);
+
+ double xmin = 1.e300; // min & max of face 2D parametric coord.
+ double xmax = -1.e300;
+ double ymin = 1.e300;
+ double ymax = -1.e300;
+ int nbp = 23;
+ scalex = 1;
+ scaley = 1;
+
+ TopExp_Explorer wexp(W, TopAbs_EDGE);
+ for ( ; wexp.More(); wexp.Next())
+ {
+ const TopoDS_Edge & E = TopoDS::Edge( wexp.Current() );
+ double f, l;
+ Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
+ if ( C2d.IsNull() ) continue;
+ double du = (l - f) / double (nbp);
+ for (int i = 0; i <= nbp; i++)
+ {
+ double param = f + double (i) * du;
+ gp_Pnt2d p = C2d->Value(param);
+ if (p.X() < xmin)
+ xmin = p.X();
+ if (p.X() > xmax)
+ xmax = p.X();
+ if (p.Y() < ymin)
+ ymin = p.Y();
+ if (p.Y() > ymax)
+ ymax = p.Y();
+ // MESSAGE(" "<< f<<" "<<l<<" "<<param<<" "<<xmin<<" "<<xmax<<" "<<ymin<<" "<<ymax);
+ }
+ }
+ // SCRUTE(xmin);
+ // SCRUTE(xmax);
+ // SCRUTE(ymin);
+ // SCRUTE(ymax);
+ double xmoy = (xmax + xmin) / 2.;
+ double ymoy = (ymax + ymin) / 2.;
+ double xsize = xmax - xmin;
+ double ysize = ymax - ymin;
+
+ Handle(Geom_Surface) S = BRep_Tool::Surface(F); // 3D surface
+
+ double length_x = 0;
+ double length_y = 0;
+ gp_Pnt PX0 = S->Value(xmin, ymoy);
+ gp_Pnt PY0 = S->Value(xmoy, ymin);
+ double dx = xsize / double (nbp);
+ double dy = ysize / double (nbp);
+ for (int i = 1; i <= nbp; i++)
+ {
+ double x = xmin + double (i) * dx;
+ gp_Pnt PX = S->Value(x, ymoy);
+ double y = ymin + double (i) * dy;
+ gp_Pnt PY = S->Value(xmoy, y);
+ length_x += PX.Distance(PX0);
+ length_y += PY.Distance(PY0);
+ PX0 = PX;
+ PY0 = PY;
+ }
+ scalex = length_x / xsize;
+ scaley = length_y / ysize;
+// SCRUTE(xsize);
+// SCRUTE(ysize);
+ double xyratio = xsize*scalex/(ysize*scaley);
+ const double maxratio = 1.e2;
+ //SCRUTE(xyratio);
+ if (xyratio > maxratio) {
+ SCRUTE( scaley );
+ scaley *= xyratio / maxratio;
+ SCRUTE( scaley );
+ }
+ else if (xyratio < 1./maxratio) {
+ SCRUTE( scalex );
+ scalex *= 1 / xyratio / maxratio;
+ SCRUTE( scalex );
+ }
+ ASSERT(scalex);
+ ASSERT(scaley);
}
//=============================================================================
//=============================================================================
void StdMeshers_MEFISTO_2D::StoreResult(SMESH_Mesh & aMesh,
- Z nbst, R2 * uvst, Z nbt, Z * nust,
- const TopoDS_Face & F, bool faceIsForward,
- map<int, const SMDS_MeshNode*>&mefistoToDS)
+ Z nbst, R2 * uvst, Z nbt, Z * nust,
+ const TopoDS_Face & F, bool faceIsForward,
+ map<int, const SMDS_MeshNode*>&mefistoToDS,
+ double scalex, double scaley)
{
- double scalex;
- double scaley;
- ComputeScaleOnFace(aMesh, F, scalex, scaley);
-
- SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
-
- Z n, m;
- Handle(Geom_Surface) S = BRep_Tool::Surface(F);
+ SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
+
+ Z n, m;
+ Handle(Geom_Surface) S = BRep_Tool::Surface(F);
+
+ for (n = 0; n < nbst; n++)
+ {
+ if (mefistoToDS.find(n + 1) == mefistoToDS.end())
+ {
+ double u = uvst[n][0] / scalex;
+ double v = uvst[n][1] / scaley;
+ gp_Pnt P = S->Value(u, v);
+
+ SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(node, F);
+
+ //MESSAGE(P.X()<<" "<<P.Y()<<" "<<P.Z());
+ mefistoToDS[n + 1] = node;
+ //MESSAGE("NEW: "<<n<<" "<<mefistoToDS[n+1]);
+ SMDS_FacePosition* fpos =
+ static_cast<SMDS_FacePosition*>(node->GetPosition().get());
+ fpos->SetUParameter(u);
+ fpos->SetVParameter(v);
+ }
+ }
+
+ m = 0;
+ int mt = 0;
+
+ //SCRUTE(faceIsForward);
+ for (n = 1; n <= nbt; n++)
+ {
+ int inode1 = nust[m++];
+ int inode2 = nust[m++];
+ int inode3 = nust[m++];
+
+ const SMDS_MeshNode *n1, *n2, *n3;
+ n1 = mefistoToDS[inode1];
+ n2 = mefistoToDS[inode2];
+ n3 = mefistoToDS[inode3];
+ //MESSAGE("-- "<<inode1<<" "<<inode2<<" "<<inode3);
+
+ // triangle points must be in trigonometric order if face is Forward
+ // else they must be put clockwise
+
+ bool triangleIsWellOriented = faceIsForward;
+
+ SMDS_MeshElement * elt;
+ if (triangleIsWellOriented)
+ elt = meshDS->AddFace(n1, n2, n3);
+ else
+ elt = meshDS->AddFace(n1, n3, n2);
+
+ meshDS->SetMeshElementOnShape(elt, F);
+ m++;
+ }
+
+ // remove bad elements build on vertices shared by wires
+
+ list<const SMDS_MeshNode*>::iterator itN = myNodesOnCommonV.begin();
+ for ( ; itN != myNodesOnCommonV.end(); itN++ )
+ {
+ const SMDS_MeshNode* node = *itN;
+ SMDS_ElemIteratorPtr invElemIt = node->GetInverseElementIterator();
+ while ( invElemIt->more() )
+ {
+ const SMDS_MeshElement* elem = invElemIt->next();
+ SMDS_ElemIteratorPtr itN = elem->nodesIterator();
+ int nbSame = 0;
+ while ( itN->more() )
+ if ( itN->next() == node)
+ nbSame++;
+ if (nbSame > 1) {
+ MESSAGE( "RM bad element " << elem->GetID());
+ meshDS->RemoveElement( elem );
+ }
+ }
+ }
- for (n = 0; n < nbst; n++)
- {
- double u = uvst[n][0] / scalex;
- double v = uvst[n][1] / scaley;
- gp_Pnt P = S->Value(u, v);
-
- if (mefistoToDS.find(n + 1) == mefistoToDS.end())
- {
- SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnFace(node, F);
-
- //MESSAGE(nodeId<<" "<<P.X()<<" "<<P.Y()<<" "<<P.Z());
- mefistoToDS[n + 1] = node;
- //MESSAGE(" "<<n<<" "<<mefistoToDS[n+1]);
- SMDS_FacePosition* fpos =
- static_cast<SMDS_FacePosition*>(node->GetPosition().get());
- fpos->SetUParameter(u);
- fpos->SetVParameter(v);
- }
- }
-
- m = 0;
- int mt = 0;
-
- //SCRUTE(faceIsForward);
- for (n = 1; n <= nbt; n++)
- {
- int inode1 = nust[m++];
- int inode2 = nust[m++];
- int inode3 = nust[m++];
-
- const SMDS_MeshNode *n1, *n2, *n3;
- n1 = mefistoToDS[inode1];
- n2 = mefistoToDS[inode2];
- n3 = mefistoToDS[inode3];
- //MESSAGE("-- "<<inode1<<" "<<inode2<<" "<<inode3<<" ++ "<<nodeId1<<" "<<nodeId2<<" "<<nodeId3);
-
- // triangle points must be in trigonometric order if face is Forward
- // else they must be put clockwise
-
- bool triangleIsWellOriented = faceIsForward;
-
- SMDS_MeshElement * elt;
- if (triangleIsWellOriented)
- elt = meshDS->AddFace(n1, n2, n3);
- else
- elt = meshDS->AddFace(n1, n3, n2);
-
- meshDS->SetMeshElementOnShape(elt, F);
- m++;
- }
}
//=============================================================================
double StdMeshers_MEFISTO_2D::ComputeEdgeElementLength(SMESH_Mesh & aMesh,
const TopoDS_Shape & aShape)
{
- MESSAGE("StdMeshers_MEFISTO_2D::ComputeEdgeElementLength");
+ //MESSAGE("StdMeshers_MEFISTO_2D::ComputeEdgeElementLength");
// **** a mettre dans SMESH_2D_Algo ?
const TopoDS_Face & FF = TopoDS::Face(aShape);
